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Note: This page contains sample records for the topic "hvac heating ventilation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

HVAC Technology Report: A Review of Heating, Ventilation and Air Conditioning Technology and Markets  

Science Conference Proceedings (OSTI)

For many of us, roughly 95 percent of our time is spent indoors. To enable humans to spend this much time inside, mechanical equipment is necessary to provide space conditioning to control the temperature (heating and cooling), ventilation, humidity, and indoor air quality. This report introduces the heating, ventilation, and air-conditioning (HVAC) industry to EPRI member utility employees. The document describes the most common technologies and applications and provides an overview of industry statisti...

2000-12-14T23:59:59.000Z

2

VENTILATION (HVAC) FAILURE (BUILDING WIDE)  

E-Print Network (OSTI)

VENTILATION (HVAC) FAILURE (BUILDING WIDE) A failure or shutdown of the ventilation system will be signaled by cessation of the audible background "rumbling" sound of the building's HVAC system. As building durations. NOTE: Due to unpredictable pressure differentials in and around the labs during an HVAC failure

Strynadka, Natalie

3

Proposal for the award of a contract for the design, supply, installation and commissioning of Heating, Ventilation and Air-Conditioning (HVAC) systems for the PS accelerator infrastructure  

E-Print Network (OSTI)

Proposal for the award of a contract for the design, supply, installation and commissioning of Heating, Ventilation and Air-Conditioning (HVAC) systems for the PS accelerator infrastructure

2012-01-01T23:59:59.000Z

4

Proposal for the award of a contract for dismantling, removal and packaging of the existing Heating, Ventilation and Air-Conditioning (HVAC) systems in the PS tunnel  

E-Print Network (OSTI)

Proposal for the award of a contract for dismantling, removal and packaging of the existing Heating, Ventilation and Air-Conditioning (HVAC) systems in the PS tunnel

2012-01-01T23:59:59.000Z

5

Classroom HVAC: Improving ventilation and saving energy -- field study plan  

E-Print Network (OSTI)

in this study. Classroom HVAC: Improving Ventilation andV8doc.sas.com/sashtml. Classroom HVAC: Improving VentilationBerkeley, CA 94720. Classroom HVAC: Improving Ventilation

Apte, Michael G.; Faulkner, David; Hodgson, Alfred T.; Sullivan, Douglas P.

2004-01-01T23:59:59.000Z

6

Ventilation, temperature, and HVAC characteristics in small and...  

NLE Websites -- All DOE Office Websites (Extended Search)

Ventilation, temperature, and HVAC characteristics in small and medium commercial buildings in California Title Ventilation, temperature, and HVAC characteristics in small and...

7

Proposal for the award of a contract for the design, supply, installation and commissioning of a Heating, Ventilation and Air-Conditioning (HVAC) system for the computer room of the CERN Control Centre  

E-Print Network (OSTI)

Proposal for the award of a contract for the design, supply, installation and commissioning of a Heating, Ventilation and Air-Conditioning (HVAC) system for the computer room of the CERN Control Centre

2012-01-01T23:59:59.000Z

8

Proposal for the award of a contract for the design, supply, installation and commissioning of a Heating Ventilation and Air Conditioning (HVAC) system for the HIE-ISOLDE infrastructure  

E-Print Network (OSTI)

Proposal for the award of a contract for the design, supply, installation and commissioning of a Heating Ventilation and Air Conditioning (HVAC) system for the HIE-ISOLDE infrastructure

2012-01-01T23:59:59.000Z

9

R and D opportunities for commercial HVAC (heating, air conditioning, and ventilation) equipment  

SciTech Connect

The overall objective of this project is to identify and characterize generic HVAC equipment research that will provide the best investment opportunities for DOE R and D funds. The prerequisites of a DOE research program include research efforts that are potentially significant in energy conservation impact and that are cost-effective, long-term, and high risk. These prerequisites form the basic guidelines for the R and D opportunities assessed. The assessment excludes the R and D areas that have potential or current private sector sponsors. Finally, R and D areas which are included in DOE programs generally are not addressed.

Chiu, S.A.; Zaloudek, F.R.

1987-03-01T23:59:59.000Z

10

Acoustical prediction methods for heating, ventilating, and air?conditioning (HVAC) systems  

Science Conference Proceedings (OSTI)

The goal of this project is to compare and contrast various aspects of acoustical prediction methods for heating

2005-01-01T23:59:59.000Z

11

International Energy Agency Building Energy Simulation Test and Diagnostic Method for Heating, Ventilating, and Air-Conditioning Equipment Models (HVAC BESTEST); Volume 1: Cases E100-E200  

DOE Green Energy (OSTI)

This report describes the Building Energy Simulation Test for Heating, Ventilating, and Air-Conditioning Equipment Models (HVAC BESTEST) project conducted by the Tool Evaluation and Improvement International Energy Agency (IEA) Experts Group. The group was composed of experts from the Solar Heating and Cooling (SHC) Programme, Task 22, Subtask A. The current test cases, E100-E200, represent the beginning of work on mechanical equipment test cases; additional cases that would expand the current test suite have been proposed for future development.

Neymark, J.; Judkoff, R.

2002-01-01T23:59:59.000Z

12

Ventilation, temperature, and HVAC characteristics in small and medium  

NLE Websites -- All DOE Office Websites (Extended Search)

Ventilation, temperature, and HVAC characteristics in small and medium Ventilation, temperature, and HVAC characteristics in small and medium commercial buildings in California Title Ventilation, temperature, and HVAC characteristics in small and medium commercial buildings in California Publication Type Journal Article Refereed Designation Refereed Year of Publication 2012 Authors Bennett, Deborah H., William J. Fisk, Michael G. Apte, X. Wu, Amber L. Trout, David Faulkner, and Douglas P. Sullivan Journal Indoor Air Volume 22 Issue 4 Pagination 309-20 Abstract This field study of 37 small and medium commercial buildings throughout California obtained information on ventilation rate, temperature, and heating, ventilating, and air-conditioning (HVAC) system characteristics. The study included seven retail establishments; five restaurants; eight offices; two each of gas stations, hair salons, healthcare facilities, grocery stores, dental offices, and fitness centers; and five other buildings. Fourteen (38%) of the buildings either could not or did not provide outdoor air through the HVAC system. The air exchange rate averaged 1.6 (s.d. = 1.7) exchanges per hour and was similar between buildings with and without outdoor air supplied through the HVAC system, indicating that some buildings have significant leakage or ventilation through open windows and doors. Not all buildings had sufficient air exchange to meet ASHRAE 62.1 Standards, including buildings used for fitness centers, hair salons, offices, and retail establishments. The majority of the time, buildings were within the ASHRAE temperature comfort range. Offices were frequently overcooled in the summer. All of the buildings had filters, but over half the buildings had a filter with a minimum efficiency reporting value rating of 4 or lower, which are not very effective for removing fine particles. PRACTICAL IMPLICATIONS: Most U.S. commercial buildings (96%) are small- to medium-sized, using nearly 18% of the country's energy, and sheltering a large population daily. Little is known about the ventilation systems in these buildings. This study found a wide variety of ventilation conditions, with many buildings failing to meet relevant ventilation standards. Regulators may want to consider implementing more complete building inspections at commissioning and point of sale.

13

Utilizing Passive Ventilation to Complement HVAC Systems in Enclosed Buildings  

E-Print Network (OSTI)

Utilizing Passive Ventilation to Complement HVAC Systems in Enclosed Buildings Tom Rogg REU Student to assist HVAC has the potential to significantly reduce life cycle cost and energy consumption and electrical system that will tie thermostats to controlled valves in the actual HVAC system. Based on results

Mountziaris, T. J.

14

New and Underutilized Heating, Ventilation, and Air Conditioning...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

8, 2013 - 2:56pm Addthis The following heating, ventilation, and air conditioning (HVAC) technologies are underutilized within the Federal sector. These technologies have been...

15

Nuclear Maintenance Applications Center: Heating, Ventilating, and Air Conditioning Specialist Guide  

Science Conference Proceedings (OSTI)

The people responsible for heating, ventilating, and air conditioning (HVAC) in the nuclear power industry are known by various titles--HVAC specialist, HVAC component engineer, HVAC system manager, and HVAC system engineer, to name a few. Although HVAC duties and responsibilities are often spread across several departments, such as maintenance, operations, engineering, and procurement, it is up to the HVAC specialist to ensure that HVAC system and component health and reliability are maintained. This re...

2011-11-28T23:59:59.000Z

16

Value impact analysis of Generic Issue 143, Availability of Heating, Ventilation, Air Conditioning (HVAC) and Chilled Water Systems  

Science Conference Proceedings (OSTI)

This study evaluates the values (benefits) and impacts (costs) associated with potential resolutions to Generic Issue 143, ``Availability of HVAC and Chilled Water Systems.`` The study identifies vulnerabilities related to failures of HVAC, chilled water, and room cooling systems; develops estimates of room heatup rates and safety-related equipment vulnerabilities following losses of HVAC/room cooler systems; develops estimates of the core damage frequencies and public risks associated with failures of these systems; develops three proposed resolution strategies to this generic issue; and performs a value/impact analysis of the proposed resolutions. Existing probabilistic risk assessments for four representative plants, including one plant from each vendor, form the basis for the core damage frequency and public risk calculations. Both internal and external events were considered. It was concluded that all three proposed resolution strategies exceed the $1,000/person-rem cost-effectiveness ratio. Additional evaluations were performed to develop ``generic`` insights on potential design-related and configuration-related vulnerabilities and potential high-frequency ({approximately}1E-04/RY) accident sequences that involve failures of HVAC/room cooling functions. It was concluded that, although high-frequency accident sequences may exist at some plants, these high-frequency sequences are plant-specific in nature or have been resolved through hardware and/or operational changes. The plant-specific Individual Plant Examinations are an effective vehicle for identification and resolution of these plant-specific anomalies and hardware configurations.

Daling, P.M.; Marler, J.E.; Vo, T.V.; Phan, H.; Friley, J.R. [Pacific Northwest Lab., Richland, WA (United States)

1993-11-01T23:59:59.000Z

17

Classroom HVAC: Improving ventilation and saving energy -- field study plan  

SciTech Connect

The primary goals of this research effort are to develop, evaluate, and demonstrate a very practical HVAC system for classrooms that consistently provides classrooms (CRs) with the quantity of ventilation in current minimum standards, while saving energy, and reducing HVAC-related noise levels. This research is motivated by the public benefits of energy efficiency, evidence that many CRs are under-ventilated, and public concerns about indoor environmental quality in CRs. This document provides a summary of the detailed plans developed for the field study that will take place in 2005 to evaluate the energy and IAQ performance of a new classroom HVAC technology. The field study will include measurements of HVAC energy use, ventilation rates, and IEQ conditions in 10 classrooms with the new HVAC technology and in six control classrooms with a standard HVAC system. Energy use and many IEQ parameters will be monitored continuously, while other IEQ measurements will be will be performed seasonally. Continuously monitored data will be remotely accessed via a LonWorks network. Instrument calibration plans that vary with the type of instrumentation used are established. Statistical tests will be employed to compare energy use and IEQ conditions with the new and standard HVAC systems. Strengths of this study plan include the collection of real time data for a full school year, the use of high quality instrumentation, the incorporation of many quality control measures, and the extensive collaborations with industry that limit costs to the sponsors.

Apte, Michael G.; Faulkner, David; Hodgson, Alfred T.; Sullivan, Douglas P.

2004-10-14T23:59:59.000Z

18

MODELING PARTICLE DEPOSITION ON HVAC HEAT EXCHANGERS  

E-Print Network (OSTI)

LBNL-49339 MODELING PARTICLE DEPOSITION ON HVAC HEAT EXCHANGERS J.A. Siegel1,3 * and W.W. Nazaroff2 Department of Energy under contract DE-AC03-76SF00098. #12;MODELING PARTICLE DEPOSITION ON HVAC HEAT, such as discontinuities in the fins, are hypothesized to be responsible for the discrepancy. INDEX TERMS HVAC, Fouling

19

Heating, Ventilation, and Air Conditioning Renovations | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Heating, Ventilation, and Air Conditioning Renovations Heating, Ventilation, and Air Conditioning Renovations Heating, Ventilation, and Air Conditioning Renovations October 16, 2013 - 4:49pm Addthis Renewable Energy Options for HVAC Renovations Geothermal Heat Pumps (GHP) Solar Water Heating (SWH) Biomass Passive Solar Heating Biomass Heating Solar Ventilation Air Preheating Federal building renovations that encompass the heating, ventilation, and air conditioning (HVAC) systems in a facility provide a range of renewable energy opportunities. The primary technology option for HVAC renovations is geothermal heat pumps (GHP). Other options include leveraging a solar water heating (SWH) system to offset heating load or using passive solar heating or a biomass-capable furnace or boiler. Some facilities may also take

20

Particulate Fouling of HVAC Heat Exchangers Jeffrey Alexander Siegel  

E-Print Network (OSTI)

Particulate Fouling of HVAC Heat Exchangers by Jeffrey Alexander Siegel B.S. (Swarthmore College.......................................................................................xv CHAPTER 1: PARTICULATE FOULING OF HVAC HEAT EXCHANGERS ....1 1.1 Introduction.......................................................................11 CHAPTER 2: MODELING PARTICLE DEPOSITION ON HVAC HEAT EXCHANGERS

Siegel, Jeffrey

Note: This page contains sample records for the topic "hvac heating ventilation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Modeling particle deposition on HVAC heat exchangers  

E-Print Network (OSTI)

DEPOSITION ON HVAC HEAT EXCHANGERS JA Siegel 1,3 * and WWof fin-and-tube heat exchangers by particle deposition leadsparticle deposition on heat exchanger surfaces. We present a

Siegel, J.A.; Nazaroff, W.W.

2002-01-01T23:59:59.000Z

22

HVAC Radial Air Bearing Heat Exchangers Research Project | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Radial Air Bearing Heat Exchangers Radial Air Bearing Heat Exchangers Research Project HVAC Radial Air Bearing Heat Exchangers Research Project The U.S. Department of Energy is currently conducting research into heating, ventilation, and air conditioning (HVAC) radial air bearing heat exchangers. Rotary air bearing heat exchanger technology simultaneously solves four long standing problems of conventional "fan-plus-finned-heat-sink" heat exchangers. Project Description This project seeks to design, fabricate, and test successive generations of prototype radial air bearing heat exchanger devices based on lessons learned and further insights into device optimization, computational fluid dynamic studies for parametric optimization and determination of scaling laws, and laboratory measurement of flow field and heat transfer

23

Fouling of HVAC fin and tube heat exchangers  

E-Print Network (OSTI)

air ? air ? part ? part FPI HVAC REFERENCES Anonymous, 1987,LBNL-47668 Fouling of HVAC Fin and Tube Heat ExchangersCIEE SPONSOR. FOULING OF HVAC FIN AND TUBE HEAT EXCHANGERS

Siegel, Jeffrey; Carey, Van P.

2001-01-01T23:59:59.000Z

24

HVAC Optimized Heat Exchangers Research Project | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Optimized Heat Exchangers Research Optimized Heat Exchangers Research Project HVAC Optimized Heat Exchangers Research Project The U.S. Department of Energy is currently conducting research into heating, ventilation, and air conditioning (HVAC) optimized heat exchangers. The information generated in this study will demonstrate performance improvements that can be achieved through optimization of refrigerant circuitry for non-uniform inlet air distribution. The tubing circuitry on fin-tube heat exchangers used in residential space-conditioning systems is typically designed assuming uniform airflow through the finned passageways. However, the air flow in installed systems is highly non-uniform, resulting in mismatched refrigerant-air heat transfer that reduces the capacity of the heat exchanger and efficiency of

25

Intelligent Control of Heating, Ventilating and Air Conditioning Systems  

Science Conference Proceedings (OSTI)

This paper proposed a simulation-optimization energy saving strategy for heating, ventilating and air conditioning (HVAC) systems' condenser water loop through intelligent control of single speed cooling towers' components. An analysis of system components ...

Patrick Low Kie; Lau Bee Theng

2009-07-01T23:59:59.000Z

26

Heating, Ventilation and Air Conditioning Efficiency  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Presented By: WALTER E. JOHNSTON, PE Presented By: WALTER E. JOHNSTON, PE CEM, CEA, CLEP, CDSM, CPE HVAC Systems The purpose of a Heating, Ventilation and Air Conditioning (HVAC) system is to provide and maintain a comfortable environment within a building for the occupants or for the process being conducted Many HVAC systems were not designed with energy efficiency as one of the design factors 3 Air Air is the major conductor of heat. Lack of heat = air conditioning OR 4 Btu - Amount of heat required to raise one pound of water 1 F = 0.252 KgCal 1 Pound of Water = About 1 Pint of Water ~ 1 Large Glass 1 Kitchen Match Basics of Air Conditioning = 1 Btu 5 = 6 Low Cost Cooling Unit 7 8 Typical Design Conditions 75 degrees F temperature 50% relative humidity 30 - 50 FPM air movement

27

International Energy Agency Building Energy Simulation Test and Diagnostic Method for Heating, Ventilating, and Air-Conditioning Equipment Models (HVAC BESTEST): Volume 2: Cases E300-E545.  

DOE Green Energy (OSTI)

This report documents an additional set of mechanical system test cases that are planned for inclusion in ANSI/ASHRAE STANDARD 140. The cases test a program's modeling capabilities on the working-fluid side of the coil, but in an hourly dynamic context over an expanded range of performance conditions. These cases help to scale the significance of disagreements that are less obvious in the steady-state cases. The report is Vol. 2 of HVAC BESTEST Volume 1. Volume 1 was limited to steady-state test cases that could be solved with analytical solutions. Volume 2 includes hourly dynamic effects, and other cases that cannot be solved analytically. NREL conducted this work in collaboration with the Tool Evaluation and Improvement Experts Group under the International Energy Agency (IEA) Solar Heating and Cooling Programme Task 22.

Neymark J.; Judkoff, R.

2004-12-01T23:59:59.000Z

28

Building Technologies Office: HVAC Optimized Heat Exchangers Research  

NLE Websites -- All DOE Office Websites (Extended Search)

Optimized Heat Optimized Heat Exchangers Research Project to someone by E-mail Share Building Technologies Office: HVAC Optimized Heat Exchangers Research Project on Facebook Tweet about Building Technologies Office: HVAC Optimized Heat Exchangers Research Project on Twitter Bookmark Building Technologies Office: HVAC Optimized Heat Exchangers Research Project on Google Bookmark Building Technologies Office: HVAC Optimized Heat Exchangers Research Project on Delicious Rank Building Technologies Office: HVAC Optimized Heat Exchangers Research Project on Digg Find More places to share Building Technologies Office: HVAC Optimized Heat Exchangers Research Project on AddThis.com... About Take Action to Save Energy Partner with DOE Activities Appliances Research Building Envelope Research

29

HVAC system study: a data-driven approach.  

E-Print Network (OSTI)

?? The energy consumed by heating, ventilating, and air conditioning (HVAC) systems has increased in the past two decades. Thus, improving efficiency of HVAC systems… (more)

Xu, Guanglin

2012-01-01T23:59:59.000Z

30

System-Level Monitoring and Diagnosis of Building HVAC System.  

E-Print Network (OSTI)

??Heating, ventilation, and air conditioning (HVAC) is an indoor environmental technology that is extensively instrumented for large-scale buildings. Among all subsystems of buildings, the HVAC… (more)

Wu, Siyu

2013-01-01T23:59:59.000Z

31

Fouling of HVAC fin and tube heat exchangers  

E-Print Network (OSTI)

Methods to Maintain Heat Exchanger Coil Cleanliness, ASHRAEof HVAC Fin and Tube Heat Exchangers Jeffrey Siegel and VanOF HVAC FIN AND TUBE HEAT EXCHANGERS Jeffrey Siegel 1,2 and

Siegel, Jeffrey; Carey, Van P.

2001-01-01T23:59:59.000Z

32

Deposition of biological aerosols on HVAC heat exchangers  

E-Print Network (OSTI)

Methods to Maintain Heat Exchanger Coil Cleanliness. ASHRAEEngineering Foundation on Heat Exchanger Fouling, UnitedAerosols on HVAC Heat Exchangers Jeffrey Siegel and Iain

Siegel, Jeffrey; Walker, Iain

2001-01-01T23:59:59.000Z

33

Deposition of biological aerosols on HVAC heat exchangers  

E-Print Network (OSTI)

Methods to Maintain Heat Exchanger Coil Cleanliness. ASHRAEEngineering Foundation on Heat Exchanger Fouling, Unitedof HVAC Fin and Tube Heat Exchangers, To be published in the

Siegel, Jeffrey; Walker, Iain

2001-01-01T23:59:59.000Z

34

Deposition of Biological Aerosols on HVAC Heat Exchangers  

E-Print Network (OSTI)

LBNL-47669 Deposition of Biological Aerosols on HVAC Heat Exchangers Jeffrey Siegel and Iain Walker of Biological Aerosols on HVAC Heat Exchangers Jeffrey A. Siegel Iain S. Walker, Ph.D. ASHRAE Student Member that are found in commercial and residential HVAC systems of 1 - 6 m/s (200 - 1200 ft/min), particle diameters

35

Facility HVAC System Conversion to Ground Source Heat Pump Geothermal...  

Open Energy Info (EERE)

ventilators will utilize the hot water to "temper" outdoor air ventilation. Although the heat pump modules can provide both heating and cooling, the space requires heating only....

36

Building Technologies Office: HVAC Radial Air Bearing Heat Exchanger  

NLE Websites -- All DOE Office Websites (Extended Search)

Radial Air Bearing Radial Air Bearing Heat Exchanger Research Project to someone by E-mail Share Building Technologies Office: HVAC Radial Air Bearing Heat Exchanger Research Project on Facebook Tweet about Building Technologies Office: HVAC Radial Air Bearing Heat Exchanger Research Project on Twitter Bookmark Building Technologies Office: HVAC Radial Air Bearing Heat Exchanger Research Project on Google Bookmark Building Technologies Office: HVAC Radial Air Bearing Heat Exchanger Research Project on Delicious Rank Building Technologies Office: HVAC Radial Air Bearing Heat Exchanger Research Project on Digg Find More places to share Building Technologies Office: HVAC Radial Air Bearing Heat Exchanger Research Project on AddThis.com... About Take Action to Save Energy Partner with DOE

37

Modeling and Identification for HVAC Systems.  

E-Print Network (OSTI)

??Heating, Ventilation and Air Conditioning (HVAC) systems consist of all the equipment that control the conditions and distribution of indoor air. Indoor air must be… (more)

Scotton, Francesco

2012-01-01T23:59:59.000Z

38

HVAC Testing, Adjusting, and Balancing Guideline  

Science Conference Proceedings (OSTI)

This report provides practical guidelines that can be used by power plant personnel to diagnose and troubleshoot heating, ventilating, and air conditioning (HVAC) system and component performance problems.

2001-10-24T23:59:59.000Z

39

Cooling and Dehumidification HVAC Technology for 1990s  

E-Print Network (OSTI)

Desiccant Cooling and Dehumidification HVAC Technology for 1990s HVAC: Heating, Ventilation Research Trusts SERI #12;Challenges Facing HVAC Industry in 1990's * Reduction of CFCs * Indoor air quality to solve the problems of the HVAC industry faced in1990's for space conditioning. SERI #12;l- = m mN a- mg

Oak Ridge National Laboratory

40

Decentralized nonlinear adaptive control of an HVAC system  

Science Conference Proceedings (OSTI)

This paper presents a new decentralized nonlinear adaptive controller (DNAC) for a heating, ventilating, and air conditioning (HVAC) system capable of maintaining comfortable conditions under varying thermal loads. In this scheme, an HVAC system is considered ...

Zhang Huaguang; Lilong Cai

2002-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "hvac heating ventilation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

A genetic rule weighting and selection process for fuzzy control of heating, ventilating and air conditioning systems  

Science Conference Proceedings (OSTI)

In this paper, we propose the use of weighted linguistic fuzzy rules in combination with a rule selection process to develop accurate fuzzy logic controllers dedicated to the intelligent control of heating, ventilating and air conditioning systems concerning ... Keywords: BEMS, building energy management system, FLC, fuzzy logic controller, Fuzzy logic controllers, GA, genetic algorithm, Genetic algorithms, HVAC systems, HVAC, heating, ventilating, and air conditioning, KB, knowledge base, PMV, predicted mean vote index for thermal comfort, Rule selection, Weighted fuzzy rules

Rafael Alcalá; Jorge Casillas; Oscar Cordón; Antonio González; Francisco Herrera

2005-04-01T23:59:59.000Z

42

Definition: HVAC | Open Energy Information  

Open Energy Info (EERE)

HVAC HVAC Jump to: navigation, search Dictionary.png HVAC An abbreviation for the heating, ventilation, and air-conditioning system; the system or systems that condition air in a building.[1] View on Wikipedia Wikipedia Definition HVAC is the technology of indoor and vehicular environmental comfort. HVAC system design is a subdiscipline of mechanical engineering, based on the principles of thermodynamics, fluid mechanics, and heat transfer. Refrigeration is sometimes added to the field's abbreviation as HVAC&R or HVACR, or ventilating is dropped as in HACR (such as the designation of HACR-rated circuit breakers). HVAC is important in the design of medium to large industrial and office buildings such as skyscrapers and in marine environments such as aquariums, where safe and

43

Algoritmi per la previsione del carico in applicazioni HVAC.  

E-Print Network (OSTI)

??Il lavoro si pone come obiettivo l’applicazione di metodi e algoritmi per la previsione del carico in sistemi HVAC (Heating, Ventilating and Air Conditioning). La… (more)

Simmini, Francesco

2010-01-01T23:59:59.000Z

44

The impact of filter loading on residential hvac performance.  

E-Print Network (OSTI)

??Buildings are the primary user of energy in the USA. Within homes, the heating, ventilation, and air condition (HVAC) system is the largest energy consumer.… (more)

Kruger, Abraham J.

2013-01-01T23:59:59.000Z

45

Co-simulation for performance prediction of integrated building and HVAC systems -An analysis of solution  

E-Print Network (OSTI)

Co-simulation for performance prediction of integrated building and HVAC systems - An analysis performance simulation of buildings and heating, ventilation and air- conditioning (HVAC) systems can help, heating, ventilation and air-conditioning (HVAC) systems are responsible for 10%-60% of the total building

46

Predicting particle deposition on HVAC heat exchangers  

E-Print Network (OSTI)

gas-side of finned tube heat- exchangers. Journal of Heatsurface interactions in heat exchanger fouling. Journal ofParticle Deposition on Heat Exchangers Epstein, N. , 1988.

Siegel, J A; Nazaroff, William W

2003-01-01T23:59:59.000Z

47

Integrated Heat Pump HVAC Systems for Near-Zero-Energy Homes - Business Case Assessment  

SciTech Connect

The long range strategic goal of the Department of Energy's Building Technologies (DOE/BT) Program is to create, by 2020, technologies and design approaches that enable the construction of net-zero energy homes at low incremental cost (DOE/BT 2005). A net zero energy home (NZEH) is a residential building with greatly reduced needs for energy through efficiency gains, with the balance of energy needs supplied by renewable technologies. While initially focused on new construction, these technologies and design approaches are intended to have application to buildings constructed before 2020 as well resulting in substantial reduction in energy use for all building types and ages. DOE/BT's Emerging Technologies (ET) team is working to support this strategic goal by identifying and developing advanced heating, ventilating, air-conditioning, and water heating (HVAC/WH) technology options applicable to NZEHs. Although the energy efficiency of heating, ventilating, and air-conditioning (HVAC) equipment has increased substantially in recent years, new approaches are needed to continue this trend. Dramatic efficiency improvements are necessary to enable progress toward the NZEH goals, and will require a radical rethinking of opportunities to improve system performance. The large reductions in HVAC energy consumption necessary to support the NZEH goals require a systems-oriented analysis approach that characterizes each element of energy consumption, identifies alternatives, and determines the most cost-effective combination of options. In particular, HVAC equipment must be developed that addresses the range of special needs of NZEH applications in the areas of reduced HVAC and water heating energy use, humidity control, ventilation, uniform comfort, and ease of zoning. In FY05 ORNL conducted an initial Stage 1 (Applied Research) scoping assessment of HVAC/WH systems options for future NZEHs to help DOE/BT identify and prioritize alternative approaches for further development. Eleven system concepts with central air distribution ducting and nine multi-zone systems were selected and their annual and peak demand performance estimated for five locations: Atlanta (mixed-humid), Houston (hot-humid), Phoenix (hot-dry), San Francisco (marine), and Chicago (cold). Performance was estimated by simulating the systems using the TRNSYS simulation engine (Solar Energy Laboratory et al. 2006) in two 1800-ft{sup 2} houses--a Building America (BA) benchmark house and a prototype NZEH taken from BEopt results at the take-off (or crossover) point (i.e., a house incorporating those design features such that further progress towards ZEH is through the addition of photovoltaic power sources, as determined by current BEopt analyses conducted by NREL). Results were summarized in a project report, 'HVAC Equipment Design options for Near-Zero-Energy Homes--A Stage 2 Scoping Assessment', ORNL/TM-2005/194 (Baxter 2005). The 2005 study report describes the HVAC options considered, the ranking criteria used, and the system rankings by priority. Table 1 summarizes the energy savings potential of the highest scoring options from the 2005 study for all five locations. All system options were scored by the ORNL building equipment research team and by William Goetzler of Navigant Consulting. These scores were reviewed by DOE/BT's Residential Integration program leaders and Building America team members. Based on these results, the two centrally ducted integrated heat pump (IHP) systems (air source and ground source versions) were selected for advancement to Stage 2 (Exploratory Development) business case assessments in FY06. This report describes results of these business case assessments. It is a compilation of three separate reports describing the initial business case study (Baxter 2006a), an update to evaluate the impact of an economizer cooling option (Baxter 2006b), and a second update to evaluate the impact of a winter humidification option (Baxter 2007). In addition it reports some corrections made subsequent to release of the first two reports to correct so

Baxter, Van D [ORNL

2007-05-01T23:59:59.000Z

48

A multi-sensor based occupancy estimation model for supporting demand driven HVAC operations  

Science Conference Proceedings (OSTI)

Heating, ventilation, and air conditioning (HVAC) is a major energy consumer in buildings, and implementing demand driven HVAC operations is a way to reduce HVAC related energy consumption. This relies on the availability of occupancy information, which ... Keywords: HVAC, building energy consumption, demand driven, non-intrusive sensor, occupancy estimation

Zheng Yang; Nan Li; Burcin Becerik-Gerber; Michael Orosz

2012-03-01T23:59:59.000Z

49

Tecniche di machine learning per la ricerca guasti in impianti HVAC.  

E-Print Network (OSTI)

??Il corretto funzionamento degli impianti di tipo HVAC (Heating Ventilating and Air Conditioning) di taglia medio/grande, risulta cruciale al fine di garantire un adeguato livello… (more)

Corso, Lorenzo

2012-01-01T23:59:59.000Z

50

Dynamic modeling and global optimal operation of multizone variable air volume HVAC systems.  

E-Print Network (OSTI)

??Energy conservation and indoor environment concerns have motivated extensive research on various aspects of control of Heating, Ventilating and Air-Conditioning (HVAC) and building systems. The… (more)

Zheng, Guo Rong

1997-01-01T23:59:59.000Z

51

HVAC Room Temperature Prediction Control Based on Neural Network Model  

Science Conference Proceedings (OSTI)

HVAC (Heating Ventilating &Air-conditioning) system is a nonlinear complex system with delay. It is very difficult to build a mathematical model of HVAC and implement model-based control. Since a BP (Back Propagation) neural network can fully approximate ... Keywords: BP neural network, predictive control, HVAC, least squares method

Shujiang Li, Shuang Ren, Xiangdong Wang

2013-01-01T23:59:59.000Z

52

Handover Performance of HVAC Duct Based Indoor Wireless Networks  

E-Print Network (OSTI)

Handover Performance of HVAC Duct Based Indoor Wireless Networks A. E. Xhafa, P. Sonthikorn, and O in indoor wireless net- works (IWN) that use heating, ventilation, and air conditioning (HVAC) ducts.e., new call blocking and handover dropping probabilities, of an IWN that uses HVAC ducts are up to 6

Stancil, Daniel D.

53

Monitoring-based HVAC Commissioning of an Existing Office  

E-Print Network (OSTI)

LBNL-5940E Monitoring-based HVAC Commissioning of an Existing Office Building for Energy Efficiency thereof or The Regents of the University of California. #12;1 Monitoring-based HVAC Commissioning@lbl.gov, Tel: 1-510-486-4921 Abstract The performance of Heating, Ventilation and Air Conditioning (HVAC

54

Department of Mechanical Engineering Spring 2012 HVAC Filter Sensor -Global  

E-Print Network (OSTI)

PENNSTATE Department of Mechanical Engineering Spring 2012 HVAC Filter Sensor - Global Overview The purpose of this project is to develop a heating, ventilation, and air conditioning (HVAC) monitoring a residential, forced flow, multi-zone HVAC filter needs to be replaced, and then alerts the users

Demirel, Melik C.

55

Fouling of HVAC Fin and Tube Heat Exchangers Jeffrey Siegel and Van P. Carey  

E-Print Network (OSTI)

LBNL-47668 Fouling of HVAC Fin and Tube Heat Exchangers Jeffrey Siegel and Van P. Carey CIEE ENDORSEMENT OF OR AGREEMENT WITH THESE FINDINGS, NOR THAT OF ANY CIEE SPONSOR. #12;FOULING OF HVAC in residential, commercial and industrial HVAC applications. Invariably, indoor and outdoor air contaminants foul

56

A multi-objective evolutionary algorithm for an effective tuning of fuzzy logic controllers in heating, ventilating and air conditioning systems  

Science Conference Proceedings (OSTI)

This paper focuses on the use of multi-objective evolutionary algorithms to develop smartly tuned fuzzy logic controllers dedicated to the control of heating, ventilating and air conditioning systems, energy performance, stability and indoor comfort ... Keywords: Fuzzy logic controllers, Genetic tuning, HVAC systems, Heating, ventilating, and air conditioning systems, Linguistic 2-tuples representation, Multi-objective evolutionary algorithms, Rule selection

María José Gacto; Rafael Alcalá; Francisco Herrera

2012-03-01T23:59:59.000Z

57

Analysis and modelling of membrane heat exchanger in HVAC energy recovery systems.  

E-Print Network (OSTI)

??The performance of membrane heat exchangers for HVAC total energy recovery systems was evaluated through experimentation and detailed system modelling. The operating principle of the… (more)

Nasif, Mohammad Shakir

2008-01-01T23:59:59.000Z

58

System dynamics based models for selecting HVAC systems for office buildings: a life cycle assessment from carbon emissions perspective.  

E-Print Network (OSTI)

??This study aims to explore the life cycle environmental impacts of typical heating ventilation and air condition (HVAC) systems including variable air volume (VAV) system,… (more)

Chen, S

2011-01-01T23:59:59.000Z

59

HVAC Improvements for Existing Houses  

NLE Websites -- All DOE Office Websites (Extended Search)

HVAC Improvements for Existing Houses HVAC Improvements for Existing Houses Speaker(s): Chryséis Bovagnet Date: September 5, 2002 - 12:00pm Location: Bldg. 90 Many older houses in the US are either not well designed from a thermal point of view or have HVAC (Heating Ventilation and Air Conditioning) systems in need of repairs or improvements. The building envelopes tend to have poor insulation and lots of leakage, and the HVAC systems are inefficient. The cooling/heating equipment is often located outside of the conditioned space (e.g. in attics or crawlspaces) with ducts that leak and have poor insulation, which cause energy loss and bad occupant comfort on peak days or in extreme climates. We developed a series of retrofits that will allow us to reduce the energy consumption of residential HVAC

60

RF propagation in an HVAC duct system: impulse response characteristics of the channel  

E-Print Network (OSTI)

RF propagation in an HVAC duct system: impulse response characteristics of the channel Pavel V, the heating, ventilation, and air conditioning (HVAC) duct system in buildings is a complex network of hollow at RF and microwave frequencies of com- mon interest. HVAC ducts can be used as a wireless communication

Stancil, Daniel D.

Note: This page contains sample records for the topic "hvac heating ventilation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Multi-carrier Signal Transmission through HVAC Ducts: Experimental Results for Channel Capacity  

E-Print Network (OSTI)

Multi-carrier Signal Transmission through HVAC Ducts: Experimental Results for Channel Capacity, for the first time, experimental results on channel capacity of heating, ventilation, and air-conditioning (HVAC through a building HVAC duct system demonstrate the ability to transmit with a spectral efficiency of 3

Stancil, Daniel D.

62

Seamless Handover in Buildings Using HVAC Ducts: A New System Architecture  

E-Print Network (OSTI)

Seamless Handover in Buildings Using HVAC Ducts: A New System Architecture Ariton E. Xhafa, Paisarn-- In this paper, we present an innovative solution to the handover problem in multi-story buildings using HVAC of the indoor wireless networks that use the heating, ventilation, and air conditioning (HVAC) ducts

Stancil, Daniel D.

63

Tile of the document: HVAC system component-based modeling and implementation  

E-Print Network (OSTI)

1 Abstract Tile of the document: HVAC system component-based modeling and implementation Karam the foundation for modeling components that are used in HVAC systems (heating, ventilation, and air conditioning such functionalities. #12;2 HVAC system component-based modeling and implementation By Karam H. Rajab Scholarly

Austin, Mark

64

Strategy Guideline: HVAC Equipment Sizing  

SciTech Connect

The heating, ventilation, and air conditioning (HVAC) system is arguably the most complex system installed in a house and is a substantial component of the total house energy use. A right-sized HVAC system will provide the desired occupant comfort and will run efficiently. This Strategy Guideline discusses the information needed to initially select the equipment for a properly designed HVAC system. Right-sizing of an HVAC system involves the selection of equipment and the design of the air distribution system to meet the accurate predicted heating and cooling loads of the house. Right-sizing the HVAC system begins with an accurate understanding of the heating and cooling loads on a space; however, a full HVAC design involves more than just the load estimate calculation - the load calculation is the first step of the iterative HVAC design procedure. This guide describes the equipment selection of a split system air conditioner and furnace for an example house in Chicago, IL as well as a heat pump system for an example house in Orlando, Florida. The required heating and cooling load information for the two example houses was developed in the Department of Energy Building America Strategy Guideline: Accurate Heating and Cooling Load Calculations.

Burdick, A.

2012-02-01T23:59:59.000Z

65

Occupancy based demand response HVAC control strategy  

Science Conference Proceedings (OSTI)

Heating, cooling and ventilation accounts for 30% energy usage and for 50% of the electricity usage in the United States. Currently, most modern buildings still condition rooms assuming maximum occupancy rather than actual usage. As a result, rooms are ... Keywords: HVAC, demand response, energy savings, occupancy, ventilation

Varick L. Erickson; Alberto E. Cerpa

2010-11-01T23:59:59.000Z

66

Initial Business Case Analysis of Two Integrated Heat Pump HVAC Systems for Near-Zero-Energy Homes  

SciTech Connect

The long range strategic goal of the Department of Energy's Building Technologies (DOE/BT) Program is to create, by 2020, technologies and design approaches that enable the construction of net-zero energy homes at low incremental cost (DOE/BT 2005). A net zero energy home (NZEH) is a residential building with greatly reduced needs for energy through efficiency gains, with the balance of energy needs supplied by renewable technologies. While initially focused on new construction, these technologies and design approaches are intended to have application to buildings constructed before 2020 as well resulting in substantial reduction in energy use for all building types and ages. DOE/BT's Emerging Technologies (ET) team is working to support this strategic goal by identifying and developing advanced heating, ventilating, air-conditioning, and water heating (HVAC/WH) technology options applicable to NZEHs. Although the energy efficiency of heating, ventilating, and air-conditioning (HVAC) equipment has increased substantially in recent years, new approaches are needed to continue this trend. Dramatic efficiency improvements are necessary to enable progress toward the NZEH goals, and will require a radical rethinking of opportunities to improve system performance. The large reductions in HVAC energy consumption necessary to support the NZEH goals require a systems-oriented analysis approach that characterizes each element of energy consumption, identifies alternatives, and determines the most cost-effective combination of options. In particular, HVAC equipment must be developed that addresses the range of special needs of NZEH applications in the areas of reduced HVAC and water heating energy use, humidity control, ventilation, uniform comfort, and ease of zoning. In FY05 ORNL conducted an initial Stage 1 (Applied Research) scoping assessment of HVAC/WH systems options for future NZEHs to help DOE/BT identify and prioritize alternative approaches for further development. Eleven system concepts with central air distribution ducting and nine multi-zone systems were selected and their annual and peak demand performance estimated for five locations: Atlanta (mixed-humid), Houston (hot-humid), Phoenix (hot-dry), San Francisco (marine), and Chicago (cold). Performance was estimated by simulating the systems using the TRNSYS simulation engine (Solar Energy Laboratory et al. 2006) in two 1800-ft{sup 2} houses--a Building America (BA) benchmark house and a prototype NZEH taken from BEopt results at the take-off (or crossover) point (i.e., a house incorporating those design features such that further progress towards ZEH is through the addition of photovoltaic power sources, as determined by current BEopt analyses conducted by NREL). Results were summarized in a project report, 'HVAC Equipment Design options for Near-Zero-Energy Homes--A Stage 2 Scoping Assessment,' ORNL/TM-2005/194 (Baxter 2005). The 2005 study report describes the HVAC options considered, the ranking criteria used, and the system rankings by priority. Table 1 summarizes the energy savings potential of the highest scoring options from the 2005 study for all five locations.

Baxter, Van D [ORNL

2006-11-01T23:59:59.000Z

67

Empirical Methodologies for Improving HVAC Efficiency  

NLE Websites -- All DOE Office Websites (Extended Search)

Empirical Methodologies for Improving HVAC Efficiency Empirical Methodologies for Improving HVAC Efficiency Speaker(s): Anil Aswani Date: September 21, 2012 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Michael Wetter This talk describes the use of empirical methodologies that we have developed for the purpose of improving heating, ventilation, and air-conditioning (HVAC) efficiency through better control algorithms and configuration. We show that semiparametric regression can both identify simplified models of thermal HVAC dynamics while also estimating time-varying heating loads using only real-time temperature measurements from thermostats. These models can be used with our learning-based model predictive control (LBMPC) method in order to improve the energy-efficiency of HVAC. Experiments on testbeds with different types of HVAC show the

68

Strategy Guideline: Transitioning HVAC Companies to Whole House Performance Contractors  

Science Conference Proceedings (OSTI)

This report describes the findings from research IBACOS conducted related to heating, ventilation, and air conditioning (HVAC) companies who have made the decision to transition to whole house performance contracting (WHPC).

Burdick, A.

2012-05-01T23:59:59.000Z

69

Temporal model-based diagnostics generation for HVAC control systems  

Science Conference Proceedings (OSTI)

Optimizing energy usage in buildings requires global models that integrate multiple factors contributing to energy, such as lighting, "Heating, Ventilating, and Air Conditioning" (HVAC), security, etc. Model transformation methods can then use these ...

Marion Behrens; Gregory Provan

2010-06-01T23:59:59.000Z

70

Sound quality descriptors for HVAC equipment from ARI Standards  

Science Conference Proceedings (OSTI)

The Air Conditioning and Refrigeration Institute (ARI) has several standards that provide methods to evaluate the sound quality of heating ventilating and air?conditioning (HVAC) equipment. These include Standard 270 Sound rating of outdoor unitary equipment

2003-01-01T23:59:59.000Z

71

Neural network based optimal control of HVAC&R systems.  

E-Print Network (OSTI)

??Heating, Ventilation, Air-Conditioning and Refrigeration (HVAC&R) systems have wide applications in providing a desired indoor environment for different types of buildings. It is well acknowledged… (more)

Ning, Min

2008-01-01T23:59:59.000Z

72

HVAC system modeling and optimization: a data-mining approach.  

E-Print Network (OSTI)

?? Heating, ventilating and air-conditioning (HVAC) system is complex non-linear system with multi-variables simultaneously contributing to the system process. It poses challenges for both system… (more)

Tang, Fan

2010-01-01T23:59:59.000Z

73

Preoperational test report, vent building ventilation system  

Science Conference Proceedings (OSTI)

This represents a preoperational test report for Vent Building Ventilation Systems, Project W-030. Project W-030 provides a ventilation upgrade for the four Aging Waste Facility tanks. The system provides Heating, Ventilation, and Air Conditioning (HVAC) for the W-030 Ventilation Building. The tests verify correct system operation and correct indications displayed by the central Monitor and Control System.

Clifton, F.T.

1997-11-04T23:59:59.000Z

74

Commercial Building HVAC: How it Affects People  

NLE Websites -- All DOE Office Websites (Extended Search)

Commercial Building HVAC: How it Affects People Commercial Building HVAC: How it Affects People Speaker(s): William Fisk Date: November 13, 2000 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: David Faulkner Commercial building heating, ventilating, and air conditioning (HVAC) systems are designed primarily to maintain a reasonable level of thermal comfort while limiting first costs and energy consumption. However, research conducted predominately within the last decade suggests that commercial building HVAC significantly influences human outcomes other than thermal comfort, including the health, satisfaction, and work performance of the building's occupants. This presentation will review the relationships of these outcomes with HVAC system type, filtration system efficiency, indoor air temperature, and outside air ventilation rate.

75

Ventilation and Solar Heat Storage System Offers Big Energy Savings  

Ventilation and Solar Heat Storage System Offers Big Energy Savings ... Heat is either reflected away from the building with radiant barriers, or heat is absorbed

76

IEEE TRANSACTIONS ON COMMUNICATIONS, VOL. 53, NO. 2, FEBRUARY 2005 335 On the Capacity Limits of HVAC Duct Channel for  

E-Print Network (OSTI)

of HVAC Duct Channel for High-Speed Internet Access Ariton E. Xhafa, Member, IEEE, Ozan K. Tonguz, Member and experimental channel-capacity estimates of heating, ventilation, and air condi- tioning (HVAC) ducts based suppressed. Our experimental results also show that even in the case of more complex HVAC duct networks (i

Stancil, Daniel D.

77

ETME 422 -REFRIGERATION & HVAC SYSTEMS FALL 2011 LEC -10:00 -10:50am M W F RH 312  

E-Print Network (OSTI)

10/31/2011 ETME 422 - REFRIGERATION & HVAC SYSTEMS FALL 2011 LEC - 10:00 - 10:50am M W F RH 312 Catalog Description ETME 422 PRINCIPLES OF HVAC I F 3 cr. LEC 3 PREREQUISITE: EMEC 320 or EGEN 324. -- Refrigeration and heating, ventilating and air-conditioning (HVAC) for comfort and industrial applications

Dyer, Bill

78

Residential HVAC Data, Assumptions and Methodology for End-Use Forecasting with EPRI-REEPS 2.1  

E-Print Network (OSTI)

LBL-34045 UC-1600 Residential HVAC Data, Assumptions and Methodology for End-Use Forecasting-uses include Heating, Ventilation and Air Conditioning (HVAC). Our analysis uses the modeling framework provided by the HVAC module in the Residential End-Use Energy Planning System (REEPS), which was developed

79

Predicting of fan speed for energy saving in HVAC system based on adaptive network based fuzzy inference system  

Science Conference Proceedings (OSTI)

In this paper, a HVAC (heating, ventilating and air-conditioning) system has two different zones was designed and fan motor speed to minimize energy consumption of the HVAC system was controlled by a conventional (proportional-integral-derivative) PID ... Keywords: ANFIS, Air flow control, Energy saving, Fan motor speed predicting, HVAC system, PID control, Temperature control

Servet Soyguder; Hasan Alli

2009-05-01T23:59:59.000Z

80

Applications of HVAC System Utilizing Building Thermal Mass in Japan  

NLE Websites -- All DOE Office Websites (Extended Search)

Applications of HVAC System Utilizing Building Thermal Mass in Japan Applications of HVAC System Utilizing Building Thermal Mass in Japan Speaker(s): Katsuhiro Miura Date: January 27, 2012 - 10:00am Location: 90-3122 Seminar Host/Point of Contact: Michael Wetter Buildings have a large thermal capacity and it affects much on building thermal load for the HVAC system. The thermal mass can be utilized also to control the thermal load by storing thermal energy before HVAC operation. There are two ways to store thermal energy. One is by operating the HVAC system and the other is by natural ventilation, mainly at night. The latter could be combined with daily HVAC operation as a hybrid ventilation. Thermal mass storage is useful to decrease the hourly peak load and the daily thermal load and can be used for both cooling and heating purpose.

Note: This page contains sample records for the topic "hvac heating ventilation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

HVAC Fans and Dampers Maintenance Guide  

Science Conference Proceedings (OSTI)

Heating, ventilation, and air conditioning (HVAC) systems serve an important function in nuclear power plants because these systems are responsible for maintaining many environmental conditions throughout the facility. Failure of these components can induce undesirable radiological conditions and stressful working conditions, and can compromise the life of qualified equipment. Some HVAC fan and damper failures are preventable by monitoring operating parameters and performing recommended maintenance activ...

1999-08-26T23:59:59.000Z

82

OPTIMIZED CONTROL STRATEGIES FOR A TYPICAL WATER LOOP HEAT PUMP SYSTEM.  

E-Print Network (OSTI)

??Water Loop Heat Pump (WLHP) System has been widely utilized in the Heating, Ventilating and Air Conditioning (HVAC) industry for several decades. There is no… (more)

Lian, Xu

2011-01-01T23:59:59.000Z

83

Indoor Air Quality Primer for HVAC System Design  

Science Conference Proceedings (OSTI)

Heating, ventilating, and air conditioning (HVAC) systems are major energy users in commercial and institutional buildings. Increased ventilation for acceptable indoor air quality (IAQ), besides increasing energy use, may result in unacceptably high indoor humidity, particularly in humid climates and/or applications requiring high ventilation rates. This report analyzes how increased ventilation affects the dehumidification capabilities of air conditioning systems in three applications -- offices, retail...

2002-02-21T23:59:59.000Z

84

Demonstration of Demand Control Ventilation Technology  

Science Conference Proceedings (OSTI)

Demand Control Ventilation (DCV) is one of the control strategies that can be used modulate the amount of ventilation air for space conditioning in commercial buildings. DCV modulates the amount of ventilation air introduced into the heating, ventilation and air conditioning (HVAC) system based on carbon dioxide levels sensed in the areas served. The carbon dioxide level is a proxy for the number of people within the space, from which the required quantity of ventilation air is determined. By using this ...

2011-12-30T23:59:59.000Z

85

HVAC System Design Strategies to Address Indoor Air Quality Standards  

Science Conference Proceedings (OSTI)

This report describes strategies that can be employed in the design and operation of heating, ventilating, and air conditioning (HVAC) systems to address the ASHRAE Standard 62 "Ventilation for Acceptable Indoor Air Quality" requirements. The report examines a wide variety of approaches to meeting the standard and their impact on energy consumption, occupant comfort, and other factors.

1999-12-09T23:59:59.000Z

86

Applying brain emotional learning algorithm for multivariable control of HVAC systems  

Science Conference Proceedings (OSTI)

In this paper, we apply a modified version of Brain Emotional Learning (BEL) controller for Heating, Ventilating and Air Conditioning (HVAC) control system whose multivariable, nonlinear and non-minimum phase nature makes the task difficult. The proposed ...

N. Sheikholeslami; D. Shahmirzadi; E. Semsar; C. Lucas; M. J. Yazdanpanah

2006-01-01T23:59:59.000Z

87

Application of computational intelligence in modeling and optimization of HVAC systems.  

E-Print Network (OSTI)

?? HVAC (Heating Ventilating and Air-Conditioning) system is multivariate, nonlinear, and shares time-varying characteristics. It poses challenges for both system modeling and performance optimization. Traditional… (more)

Li, Mingyang

2009-01-01T23:59:59.000Z

88

Heating, ventilation and air conditioning systems  

DOE Green Energy (OSTI)

A study is made of several outstanding issues concerning the commercial development of environmental control systems for electric vehicles (EVs). Engineering design constraints such as federal regulations and consumer requirements are first identified. Next, heating and cooling loads in a sample automobile are calculated using a computer model available from the literature. The heating and cooling loads are then used as a basis for estimating the electrical consumption that is to be expected for heat pumps installed in EVs. The heat pump performance is evaluated using an automobile heat pump computer model which has been developed recently at Oak Ridge National Laboratory (ORNL). The heat pump design used as input to the model consists of typical finned-tube heat exchangers and a hermetic compressor driven by a variable-speed brushless dc motor. The simulations suggest that to attain reasonable system efficiencies, the interior heat exchangers that are currently installed as automobile air conditioning will need to be enlarged. Regarding the thermal envelope of the automobile itself, calculations are made which show that considerable energy savings will result if steps are taken to reduce {open_quote}hot soak{close_quote} temperatures and if the outdoor air ventilation rate is well controlled. When these changes are made, heating and cooling should consume less than 10% of the total stored electrical energy for steady driving in most U.S. climates. However, this result depends strongly upon the type of driving: The fraction of total power for heating and cooling ({open_quote}range penalty{close_quote}) increases sharply for driving scenarios having low average propulsion power, such as stop-and-go driving.

Kyle, D.M. [Oak Ridge National Lab., TN (United States); Sullivan, R.A. [Dept. of Energy, Washington, DC (United States)

1993-02-01T23:59:59.000Z

89

Randomized Model Predictive Control for HVAC Systems  

Science Conference Proceedings (OSTI)

Heating, Ventilation and Air Conditioning (HVAC) systems play a fundamental role in maintaining acceptable thermal comfort and Indoor Air Quality (IAQ) levels, essentials for occupants well-being. Since performing this task implies high energy requirements, ... Keywords: Copulas, Learning, Randomized Model Predictive Control, Smart Buildings, Sustainable Control Systems

Alessandra Parisio, Damiano Varagnolo, Daniel Risberg, Giorgio Pattarello, Marco Molinari, Karl H. Johansson

2013-11-01T23:59:59.000Z

90

ZonePAC: Zonal Power Estimation and Control via HVAC Metering and Occupant Feedback  

Science Conference Proceedings (OSTI)

Heating Ventillation and Air Conditioning (HVAC) systems account for nearly 40% of primary energy consumption by commercial buildings. Yet, these systems by and large operate in an open-loop with the building occupants. While the monitoring and feedback ... Keywords: Energy Estimation, HVAC, Thermostat, User Interface, Variable Air Volume

Bharathan Balaji, Hidetoshi Teraoka, Rajesh Gupta, Yuvraj Agarwal

2013-11-01T23:59:59.000Z

91

Feasibility of retrofitting centralized HVAC systems for room-level zoning  

Science Conference Proceedings (OSTI)

Heating, ventilation, and cooling (HVAC) accounts for 38% of building energy usage, and over 15% of all US energy usage, making it one of the nation's largest energy consumers. Many attempts have been made to optimize the control of HVAC systems by minimizing ... Keywords: sensing,Building energy,wireless sensor networks

Tamim Sookoor; Brian Holben; Kamin Whitehouse

2012-06-01T23:59:59.000Z

92

An "ageing" operator and its use in the highly constrained topological optimization of HVAC system design  

Science Conference Proceedings (OSTI)

The synthesis of novel heating, ventilating, and air-conditioning (HVAC), system configurations is a mixed-integer, non-linear, highly constrained, multi-modal, optimization problem, with many of the constraints being subject to time-varying boundary ... Keywords: HVAC, evolutionary algorithms, system design, topological optimization

Jonathan Wight; Yi Zhang

2005-06-01T23:59:59.000Z

93

Co-design of control algorithm and embedded platform for building HVAC systems  

Science Conference Proceedings (OSTI)

The design of heating, ventilation and air conditioning (HVAC) systems is crucial for reducing energy consumption in buildings. As complex cyber-physical systems, HVAC systems involve three closely-related subsystems -- the control algorithm, the physical ... Keywords: building energy efficiency, co-design, platform-based design

Mehdi Maasoumy, Qi Zhu, Cheng Li, Forrest Meggers, Alberto Sangiovanni-Vincentelli

2013-04-01T23:59:59.000Z

94

COMPARATIVE STUDY AMONG HYBRID GROUND SOURCE HEAT PUMP SYSTEM, COMPLETE GROUND SOURCE HEAT PUMP AND CONVENTIONAL HVAC SYSTEM  

DOE Green Energy (OSTI)

In this paper, a hotel with hybrid geothermal heat pump system (HyGSHP) in the Pensacola is selected and simulated by the transient simulation software package TRNSYS [1]. To verify the simulation results, the validations are conducted by using the monthly average entering water temperature, monthly facility consumption data, and etc. And three types of HVAC systems are compared based on the same building model and HVAC system capacity. The results are presented to show the advantages and disadvantages of HyGSHP compared with the other two systems in terms of energy consumptions, life cycle cost analysis.

Jiang Zhu; Yong X. Tao

2011-11-01T23:59:59.000Z

95

Detection and diagnosis of faults and energy monitoring of HVAC systems with least-intrusive power analysis  

E-Print Network (OSTI)

Faults indicate degradation or sudden failure of equipment in a system. Widely existing in heating, ventilating, and air conditioning (HVAC) systems, faults always lead to inefficient energy consumption, undesirable indoor ...

Luo, Dong, 1966-

2001-01-01T23:59:59.000Z

96

Energy Performance and Economic Evaluations of the Geothermal Heat Pump System used in the KnowledgeWorks I and II Buildings, Blacksburg, Virginia.  

E-Print Network (OSTI)

??Heating, Ventilating and Air Conditioning Systems (HVAC) are not only one of the most energy consuming components in buildings but also contribute to green house… (more)

Charoenvisal, Kongkun

2008-01-01T23:59:59.000Z

97

MODELING AND SIMULATION OF HVAC FAULTS IN ENERGYPLUS  

E-Print Network (OSTI)

Methodology for Secondary HVAC Systems, Doctoral Thesis,2002, Particulate Fouling of HVAC Heat Exchangers, Doctoraland diagnosis strategy for HVAC systems involving sensor

Basarkar, Mangesh

2013-01-01T23:59:59.000Z

98

Advanced control strategies for heating, ventilation, air-conditioning, and refrigeration systems—An overview: Part I: Hard control  

SciTech Connect

A chronological overview of the advanced control strategies for heating, ventilation, air-conditioning, and refrigeration (HVAC&R) is presented in this article. The overview focuses on hard-computing or control techniques, such as proportional-integral-derivative, optimal, nonlinear, adaptive, and robust; soft-computing or control techniques, such as neural networks, fuzzy logic, genetic algorithms; and on the fusion or hybrid of hard- and soft-control techniques. Thus, it is to be noted that the terminology “hard” and “soft” computing/control has nothing to do with the “hardware” and “software” that is being generally used. Part I of a two-part series focuses on hard-control strategies, and Part II focuses on softand fusion-control in addition to some future directions in HVAC&R research. This overview is not intended to be an exhaustive survey on this topic, and any omission of other works is purely unintentional.

D. Subbaram Naidu; Craig G. Rieger

2011-02-01T23:59:59.000Z

99

Self-Correcting HVAC Controls Project Final Report  

SciTech Connect

This document represents the final project report for the Self-Correcting Heating, Ventilating and Air-Conditioning (HVAC) Controls Project jointly funded by Bonneville Power Administration (BPA) and the U.S. Department of Energy (DOE) Building Technologies Program (BTP). The project, initiated in October 2008, focused on exploratory initial development of self-correcting controls for selected HVAC components in air handlers. This report, along with the companion report documenting the algorithms developed, Self-Correcting HVAC Controls: Algorithms for Sensors and Dampers in Air-Handling Units (Fernandez et al. 2009), document the work performed and results of this project.

Fernandez, Nicholas; Brambley, Michael R.; Katipamula, Srinivas; Cho, Heejin; Goddard, James K.; Dinh, Liem H.

2010-01-04T23:59:59.000Z

100

Development of a Dedicated 100 Percent Ventilation Air Heat Pump  

Science Conference Proceedings (OSTI)

The concept of using dedicated 100 percent ventilation makeup air conditioning units to meet indoor air quality standards is attractive because of the inherent advantages. However, it is challenging to design and build direct expansion unitary equipment for this purpose. EPRI teamed with ClimateMaster to develop and test a prototype of a vapor compression heat pump to advance the state of the art in such equipment. The prototype unit provides deep dehumidification and cooling of ventilation air in the su...

2000-12-14T23:59:59.000Z

Note: This page contains sample records for the topic "hvac heating ventilation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

The Application of Ultraviolet Germicidal Technology in HVAC Systems  

E-Print Network (OSTI)

One of the most significant issues for today's HVAC (Heating, Ventilation, and Air Conditioning) engineer is Indoor Air Quality (IAQ). Many building owners, operators, and occupants complain of foul odors emanating from HVAC systems. The objectionable odor is the byproduct of the microbial growth (mold and fungus) that accumulates and develops on wet surfaces of HVAC units, causing foul odors to emanate from affected systems and degrading the IAQ and unit performance. This objectionable odor has been appropriately named the "Dirty Sock" syndrome. Less obvious to the building occupants, but of equal importance, are the physical effects the microbial organisms have on HVAC equipment. They restrict the airflow and limit the heat transfer capability, which increases the operating costs of the equipment. Fortunately, IAQ degradation, foul odor, and increased expenses can be eliminated with the installation of the ultraviolet 'C' band (W-C) lamps. The ultraviolet germicidal lamps are designed to kill odor causing mold and fungus that grow in wet evaporator sections of HVAC units. These lamps are installed inside HVAC systems and irradiate areas inhabited by the offending organisms, making it impossible for them to survive. The organisms disappear, the odors disappear, and most importantly, the IAQ complaints disappear. This guide will discuss the microbial growth and IAQ contaminant problems in the HVAC industry, the W-C lamp and other possible solutions, and the benefits of using the HVAC Duty W-C lamp.

Taylor, M. J.

2000-01-01T23:59:59.000Z

102

Fuzzy Control of HVAC Systems Optimized by Genetic Algorithms  

Science Conference Proceedings (OSTI)

This paper presents the use of genetic algorithms to develop smartly tuned fuzzy logic controllers dedicated to the control of heating, ventilating and air conditioning systems concerning energy performance and indoor comfort requirements. This problem ... Keywords: HVAC systems, fuzzy logic controllers, genetic tuning, multiple criteria

Rafael Alcalá; Jose M. Benítez; Jorge Casillas; Oscar Cordón; Raúl Pérez

2003-03-01T23:59:59.000Z

103

HVAC Sensors, Controls, and Human Feedback Interfaces  

NLE Websites -- All DOE Office Websites (Extended Search)

HVAC Sensors, HVAC Sensors, Controls, and Human Controls, and Human Feedback Interfaces Feedback Interfaces April 26, 2010 Dr. Amr Gado Emerson Climate Technologies Heating And...

104

Chapter 5: Lighting, HVAC, and Plumbing  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

: Lighting, : Lighting, HVAC, and Plumbing High-Performance Engineering Design Lighting System Design Mechanical System Design Central Plant Systems Plumbing and Water Use Building Control Systems Electrical Power Systems Metering LANL | Chapter 5 High-Performance Engineering Design Lighting, HVAC, and Plumbing By now, the building envelope serves multiple roles. It protects the occupants from changing weather condi- tions and it plays a key part in meeting the occupants' comfort needs. The heating, ventilating, air-conditioning, and lighting (HVAC&L) systems complement the archi- tectural design, govern the building's operation and maintenance costs, and shape the building's long-term environmental impact. The architectural design maximizes the potential for a high-performance building, but it is the

105

Simulation and Optimization of HVAC Systems  

E-Print Network (OSTI)

We developed a mathematical model of a simple Heating, Ventilation and Air Conditioning (HVAC) system and implemented the model using the VisSim simulation language. We used Fourier methods to approximate (and simplify) temperature and humidity data for the model. We created an objective function to be minimized which recorded the cost of running this HVAC system. We studied different methods for minimizing the cost function, including direct search methods using VisSim and completed preliminary studies of a Dynamic Programming programming approach to simplify the optimization problem. ii Contents 0 Executive Summary 1 1 Introduction 2 2 Evaluation of Simulation Packages 3 3 Simple Room Model for an HVAC System 5 3.1 Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.2 Room . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3.3 Splitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3.4 Mixer . . . ....

Ane Coughlin; George D. Ellington; Ellen Phifer; Brian Rieksts

1998-01-01T23:59:59.000Z

106

Ameren Illinois (Electric) - Custom, HVAC, and Motor Business Efficiency  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Ameren Illinois (Electric) - Custom, HVAC, and Motor Business Ameren Illinois (Electric) - Custom, HVAC, and Motor Business Efficiency Incentives Ameren Illinois (Electric) - Custom, HVAC, and Motor Business Efficiency Incentives < Back Eligibility Commercial Industrial Multi-Family Residential Nonprofit Savings Category Other Heating & Cooling Commercial Heating & Cooling Cooling Home Weatherization Construction Commercial Weatherization Design & Remodeling Manufacturing Sealing Your Home Ventilation Heat Pumps Heating Appliances & Electronics Commercial Lighting Lighting Water Heating Maximum Rebate $600,000/year/facility. Incentives $1-$200,000: paid at 100% Incentives $200,000-$600,000: paid at 50% Custom: 50% of incremental cost Retro-Commissioning: $200,000/year/facility; $100,000/project Leak Survey: $10,000

107

Reliability and Functional Availability of HVAC Systems  

E-Print Network (OSTI)

This paper presents a model to calculate the reliability and availability of heating, ventilation and air conditioning systems. The reliability is expressed in the terms of reliability, maintainability and decision capability. These terms are a function of the mean time between failure, mean time to repair and decision time. The availability is expressed as an operational and functional availability of the systems. These terms are a function of both the technical and human characteristics to maintain the systems in correct operational state. The result is based on a large amount data from operational organisations, the compulsory inspection of ventilation systems and momentary and continuous measurements made in HVAC-systems.

Myrefelt, S.

2004-01-01T23:59:59.000Z

108

LBNL REPORT NUMBER 53776; OCTOBER 2003 ASHRAE &Residential Ventilation  

E-Print Network (OSTI)

LBNL REPORT NUMBER 53776; OCTOBER 2003 ASHRAE &Residential Ventilation Max Sherman Energy Performance of Buildings Group IED/EETD Lawrence Berkeley Laboratory1 MHSherman@lbl.gov ASHRAE, the American of heating, ventilating, air-conditioning and refrigeration (HVAC&R). ASHRAE has recently released a new

109

Initial Business Case Analysis of Two Integrated Heat Pump HVAC Systems for Near-Zero-Energy Homes -- Update to Include Analyses of an Economizer Option and Alternative Winter Water Heating Control Option  

Science Conference Proceedings (OSTI)

The long range strategic goal of the Department of Energy's Building Technologies (DOE/BT) Program is to create, by 2020, technologies and design approaches that enable the construction of net-zero energy homes at low incremental cost (DOE/BT 2005). A net zero energy home (NZEH) is a residential building with greatly reduced needs for energy through efficiency gains, with the balance of energy needs supplied by renewable technologies. While initially focused on new construction, these technologies and design approaches are intended to have application to buildings constructed before 2020 as well resulting in substantial reduction in energy use for all building types and ages. DOE/BT's Emerging Technologies (ET) team is working to support this strategic goal by identifying and developing advanced heating, ventilating, air-conditioning, and water heating (HVAC/WH) technology options applicable to NZEHs. Although the energy efficiency of heating, ventilating, and air-conditioning (HVAC) equipment has increased substantially in recent years, new approaches are needed to continue this trend. Dramatic efficiency improvements are necessary to enable progress toward the NZEH goals, and will require a radical rethinking of opportunities to improve system performance. The large reductions in HVAC energy consumption necessary to support the NZEH goals require a systems-oriented analysis approach that characterizes each element of energy consumption, identifies alternatives, and determines the most cost-effective combination of options. In particular, HVAC equipment must be developed that addresses the range of special needs of NZEH applications in the areas of reduced HVAC and water heating energy use, humidity control, ventilation, uniform comfort, and ease of zoning. In FY05 ORNL conducted an initial Stage 1 (Applied Research) scoping assessment of HVAC/WH systems options for future NZEHs to help DOE/BT identify and prioritize alternative approaches for further development. Eleven system concepts with central air distribution ducting and nine multi-zone systems were selected and their annual and peak demand performance estimated for five locations: Atlanta (mixed-humid), Houston (hot-humid), Phoenix (hot-dry), San Francisco (marine), and Chicago (cold). Performance was estimated by simulating the systems using the TRNSYS simulation engine (Solar Energy Laboratory et al. 2006) in two 1800-ft{sup 2} houses--a Building America (BA) benchmark house and a prototype NZEH taken from BEopt results at the take-off (or crossover) point (i.e., a house incorporating those design features such that further progress towards ZEH is through the addition of photovoltaic power sources, as determined by current BEopt analyses conducted by NREL). Results were summarized in a project report, HVAC Equipment Design options for Near-Zero-Energy Homes--A Stage 2 Scoping Assessment, ORNL/TM-2005/194 (Baxter 2005). The 2005 study report describes the HVAC options considered, the ranking criteria used, and the system rankings by priority. In 2006, the two top-ranked options from the 2005 study, air-source and ground-source versions of an integrated heat pump (IHP) system, were subjected to an initial business case study. The IHPs were subjected to a more rigorous hourly-based assessment of their performance potential compared to a baseline suite of equipment of legally minimum efficiency that provided the same heating, cooling, water heating, demand dehumidification, and ventilation services as the IHPs. Results were summarized in a project report, Initial Business Case Analysis of Two Integrated Heat Pump HVAC Systems for Near-Zero-Energy Homes, ORNL/TM-2006/130 (Baxter 2006). The present report is an update to that document. Its primary purpose is to summarize results of an analysis of the potential of adding an outdoor air economizer operating mode to the IHPs to take advantage of free cooling (using outdoor air to cool the house) whenever possible. In addition it provides some additional detail for an alternative winter water heating/space heating (WH/S

Baxter, Van D [ORNL

2006-12-01T23:59:59.000Z

110

Controllability and invariance of monotone systems for robust ventilation automation in buildings  

E-Print Network (OSTI)

[2] and control [3] of Heating, Ventilating and Air Conditioning (HVAC) systems leads to an improved on these matters [4]. Various paths have already been explored for the control of HVAC systems in intelligent and energy saving [7], a model-predictive strategy [8], or a fuzzy logic controller [9]. The notion of Robust

111

Residential Heating, Ventilating, and Air Conditioning Research Workshop  

Science Conference Proceedings (OSTI)

The residential HVAC load contributes $23 billion to electric utility energy sales and significantly to peak demands. Participants at this 1986 workshop identified fifteen areas of research needed to improve HVAC components, systems, and applications.

1987-09-18T23:59:59.000Z

112

DOE Convening Report on Certification of Commercial HVAC and CRE Products  

NLE Websites -- All DOE Office Websites (Extended Search)

Convening Report on Certification of Commercial HVAC and CRE Products, October 2, 2012 Convening Report on Certification of Commercial HVAC and CRE Products, October 2, 2012 1 U.S. DEPARTMENT OF ENERGY CONVENING REPORT ON THE FEASIBILITY OF A NEGOTIATED RULEMAKING TO REVISE THE CERTIFICATION PROGRAM FOR COMMERCIAL HEATING, VENTILATING AIR CONDITIONING AND COMMERCIAL REFRIGERATION EQUIPMENT October 2, 2012 Alan W. Strasser, Esq., MA Convener

113

Multifamily Individual Heating and Ventilation Systems, Lawrence, Massachusetts (Fact Sheet)  

SciTech Connect

The conversion of an older Massachusetts building into condominiums illustrates a safe, durable, and cost-effective solution for heating and ventilation systems that can potentially benefit millions of multifamily buildings. Merrimack Valley Habitat for Humanity (MVHfH) partnered with U.S. Department of Energy Building America team Building Science Corporation (BSC) to provide high performance affordable housing for 10 families in the retrofit of an existing mass masonry building (a former convent). The original ventilation design for the project was provided by a local engineer and consisted of a single large heat recovery ventilator (HRV) located in a mechanical room in the basement with a centralized duct system providing supply air to the main living space and exhausting stale air from the single bathroom in each apartment. This design was deemed to be far too costly to install and operate for several reasons: the large central HRV was oversized and the specified flows to each apartment were much higher than the ASHRAE 62.2 rate; an extensive system of ductwork, smoke and fire dampers, and duct chases were specified; ductwork required a significant area of dropped ceilings; and the system lacked individual ventilation control in the apartments

Metzger, C.; Ueno, K.; Kerrigan, P.; Wytrykowska, H.; Van Straaten, R.

2013-11-01T23:59:59.000Z

114

Comparing maintenance costs of geothermal heat pump systems with other HVAC systems: Preventive maintenance actions and total maintenance costs  

SciTech Connect

Total annual heating, ventilating, and air-conditioning (HVAC) maintenance costs were determined for 20 schools in the Lincoln, Nebraska, Public School District. Each school examined provides cooling to over 70% of its total floor area and relies on one of the following heating and cooling systems to provide the majority of space conditioning: vertical-bore, geothermal heat pumps (GHPs), air-cooled chiller with gas-fired hot water boiler (ACC/GHWB), or water-cooled chiller with gas-fired steam boiler (WCC/GSB). A precursor to this study examined annual costs associated with repair, service, and corrective maintenance activities tracked in a work order database. This follow-up study examines costs associated with preventive maintenance (PM) activities conducted by the district. Annual PM costs were 5.87 {cents}/yr-ft{sup 2} (63.14 {cents}/yr-m{sup 2}) for ACC/GHWB schools, followed by 7.14 {cents}/yr-ft{sup 2} (76.86 {cents}/yr-m{sup 2}) for GHP, 9.82 {cents}/yr-ft{sup 2} (105.39 {cents}/yr-m{sup 2}) for WCC/ GSB, and 12.65 {cents}/yr-ft{sup 2} (136.30 {cents}/yr-m{sup 2}) for WCC/GHWB. The results of the two analyses are combined to produce an estimate of total annual maintenance costs, by system type, for the 20 schools. Total annual maintenance costs were 8.75 {cents}/yr-ft{sup 2} (94.20 {cents}/yr-m{sup 2}) for ACC/GHWB schools, followed by 9.27 {cents}/yr-ft{sup 2} (99.76 {cents}/yr-m{sup 2}) for GHP, 13.54 {cents}/yr-ft{sup 2} (145.49 {cents}/yr-m{sup 2}) for WCC/GSB, and 18.71 {cents}/yr-ft{sup 2} (201.61 {cents}/yr-m{sup 2}) for WCC/GHWB. It should be noted that these costs represent only the trends seen in the maintenance database of the Lincoln School District. Because of differences in the number of schools using each system type, varying equipment age, and the small total number of schools included in the study, the maintenance costs presented here may not be representative of the maintenance costs seen for similar equipment in other locations.

Martin, M.A.; Madgett, M.G.; Hughes, P.J.

2000-07-01T23:59:59.000Z

115

Direct Digital Control- A Tool for Energy Management of HVAC Systems  

E-Print Network (OSTI)

Direct digital control (DDC) applied to heating, ventilating, and air-conditioning (HVAC) systems corrects many of the deficiencies of conventional automatic temperature control systems. By applying new control sequences, DDC optimizes HVAC energy use. DDC can reduce HVAC operation and maintenance time and provide the environmental conditions needed to maximize production. DDC technology uses standalone, microprocessor based controllers. Controllers directly sense and process control variables (e.g. temperature, pressure) and provide a control signal to an actuator. Personal computers provide remote or local access to the digital controllers and give HVAC mechanics, energy managers, and facility engineers capabilities that conventional control systems do not offer. This paper discusses the most common deficiencies of conventionally controlled HVAC systems, advantages of DOC systems, and a case study retrofit from pneumatic control to digital control.

Swanson, K.

1993-03-01T23:59:59.000Z

116

A learning agent for heat-pump thermostat control  

Science Conference Proceedings (OSTI)

Heating, Ventilation and Air Conditioning (HVAC) systems are one of the biggest energy consumers around the world. With the efforts of moving to sustainable energy consumption, heat-pump based HVAC systems have gained popularity due to their high efficiency ... Keywords: control, energy savings, machine learning

Daniel Urieli, Peter Stone

2013-05-01T23:59:59.000Z

117

Screening analysis for EPACT-covered commercial HVAC and water-heating equipment  

SciTech Connect

EPCA requirements state that if the American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. (ASHRAE) amends efficiency levels prescribed in Standard 90.1-1989, then DOE must establish an amended uniform national manufacturing standard at the minimum level specified in amended Standard 90.1. However, DOE can establish higher efficiency levels if it can show through clear and convincing evidence that a higher efficiency level, that is technologically feasible and economically justified, would produce significant additional energy savings. On October 29, 1999, ASHRAE approved the amended Standard 90.1, which increases the minimum efficiency levels for some of the commercial heating, cooling, and water-heating equipment covered by EPCA 92. DOE asked Pacific Northwest National Laboratory (PNNL) to conduct a screening analysis to determine the energy-savings potential of the efficiency levels listed in Standard 90.1-1999. The analysis estimates the annual national energy consumption and the potential for energy savings that would result if the EPACT-covered products were required to meet these efficiency levels. The analysis also estimates additional energy-savings potential for the EPACT-covered products if they were to exceed the efficiency levels prescribed in Standard 90-1-1999. In addition, a simple life-cycle cost (LCC) analysis was performed for some alternative efficiency levels. This paper will describe the methodology, data assumptions, and results of the analysis. The magnitude of HVAC and SWH loads imposed on equipment depends on the building's physical and operational characteristics and prevailing climatic conditions. To address this variation in energy use, coil loads for 7 representative building types at 11 climate locations were estimated based on a whole-building simulation.

S Somasundaram; PR Armstrong; DB Belzer; SC Gaines; DL Hadley; S Katipumula; DL Smith; DW Winiarski

2000-05-25T23:59:59.000Z

118

Energy-Efficient Building HVAC Control Using Hybrid System LBMPC  

E-Print Network (OSTI)

Improving the energy-efficiency of heating, ventilation, and air-conditioning (HVAC) systems has the potential to realize large economic and societal benefits. This paper concerns the system identification of a hybrid system model of a building-wide HVAC system and its subsequent control using a hybrid system formulation of learning-based model predictive control (LBMPC). Here, the learning refers to model updates to the hybrid system model that incorporate the heating effects due to occupancy, solar effects, outside air temperature (OAT), and equipment, in addition to integrator dynamics inherently present in low-level control. Though we make significant modeling simplifications, our corresponding controller that uses this model is able to experimentally achieve a large reduction in energy usage without any degradations in occupant comfort. It is in this way that we justify the modeling simplifications that we have made. We conclude by presenting results from experiments on our building HVAC testbed, which s...

Aswani, Anil; Taneja, Jay; Krioukov, Andrew; Culler, David; Tomlin, Claire

2012-01-01T23:59:59.000Z

119

Initial Business Case Analysis of Two Integrated Heat Pump HVAC Systems for Near-Zero-Energy Homes - Update to Include Evaluation of Impact of Including a Humidifier Option  

SciTech Connect

The long range strategic goal of the Department of Energy's Building Technologies (DOE/BT) Program is to create, by 2020, technologies and design approaches that enable the construction of net-zero energy homes at low incremental cost (DOE/BT 2005). A net zero energy home (NZEH) is a residential building with greatly reduced needs for energy through efficiency gains, with the balance of energy needs supplied by renewable technologies. While initially focused on new construction, these technologies and design approaches are intended to have application to buildings constructed before 2020 as well resulting in substantial reduction in energy use for all building types and ages. DOE/BT's Emerging Technologies (ET) team is working to support this strategic goal by identifying and developing advanced heating, ventilating, air-conditioning, and water heating (HVAC/WH) technology options applicable to NZEHs. In FY05 ORNL conducted an initial Stage 1 (Applied Research) scoping assessment of HVAC/WH systems options for future NZEHs to help DOE/BT identify and prioritize alternative approaches for further development. Eleven system concepts with central air distribution ducting and nine multi-zone systems were selected and their annual and peak demand performance estimated for five locations: Atlanta (mixed-humid), Houston (hot-humid), Phoenix (hot-dry), San Francisco (marine), and Chicago (cold). Performance was estimated by simulating the systems using the TRNSYS simulation engine (Solar Energy Laboratory et al. 2006) in two 1800-ft{sup 2} houses--a Building America (BA) benchmark house and a prototype NZEH taken from BEopt results at the take-off (or crossover) point (i.e., a house incorporating those design features such that further progress towards ZEH is through the addition of photovoltaic power sources, as determined by current BEopt analyses conducted by NREL). Results were summarized in a project report, HVAC Equipment Design options for Near-Zero-Energy Homes--A Stage 2 Scoping Assessment, ORNL/TM-2005/194 (Baxter 2005). The 2005 study report describes the HVAC options considered, the ranking criteria used, and the system rankings by priority. In 2006, the two top-ranked options from the 2005 study, air-source and ground-source versions of a centrally ducted integrated heat pump (IHP) system, were subjected to an initial business case study. The IHPs were subjected to a more rigorous hourly-based assessment of their performance potential compared to a baseline suite of equipment of legally minimum efficiency that provided the same heating, cooling, water heating, demand dehumidification, and ventilation services as the IHPs. Results were summarized in a project report, Initial Business Case Analysis of Two Integrated Heat Pump HVAC Systems for Near-Zero-Energy Homes, ORNL/TM-2006/130 (Baxter 2006a). The present report is an update to that document which summarizes results of an analysis of the impact of adding a humidifier to the HVAC system to maintain minimum levels of space relative humidity (RH) in winter. The space RH in winter has direct impact on occupant comfort and on control of dust mites, many types of disease bacteria, and 'dry air' electric shocks. Chapter 8 in ASHRAE's 2005 Handbook of Fundamentals (HOF) suggests a 30% lower limit on RH for indoor temperatures in the range of {approx}68-69F based on comfort (ASHRAE 2005). Table 3 in chapter 9 of the same reference suggests a 30-55% RH range for winter as established by a Canadian study of exposure limits for residential indoor environments (EHD 1987). Harriman, et al (2001) note that for RH levels of 35% or higher, electrostatic shocks are minimized and that dust mites cannot live at RH levels below 40%. They also indicate that many disease bacteria life spans are minimized when space RH is held within a 30-60% range. From the foregoing it is reasonable to assume that a winter space RH range of 30-40% would be an acceptable compromise between comfort considerations and limitation of growth rates for dust mites and many bacteria. In addition it reports som

Baxter, Van D [ORNL

2007-02-01T23:59:59.000Z

120

Identification of chiller model in HVAC system using fuzzy inference rules with Zadeh's implication operator  

Science Conference Proceedings (OSTI)

In the heating, ventilating, and air-conditioning (HVAC) system, chiller is the central part and one of the primary energy consumers. For the purpose of saving energy, the identification of the chiller model is of great significance. In this paper, based ... Keywords: chiller, fuzzy inference system, implication operator, improved genetic algorithm

Yukui Zhang; Shiji Song; Cheng Wu; Kang Li

2010-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "hvac heating ventilation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

HVAC Water Heater Field Tests Research Project | Department of...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

HVAC Water Heater Field Tests Research Project HVAC Water Heater Field Tests Research Project The U.S. Department of Energy is currently conducting research into heating,...

122

Market assessment for active solar heating and cooling products. Category B: a survey of decision-makers in the HVAC marketplace. Final report  

DOE Green Energy (OSTI)

A comprehensive evaluation of the market for solar heating and cooling products for new and retrofit markets is reported. The emphasis is on the analysis of solar knowledge among HVAC decision makers and a comprehensive evaluation of their solar attitudes and behavior. The data from each of the following sectors are described and analyzed: residential consumers, organizational and manufacturing buildings, HVAC engineers and architects, builders/developers, and commercial/institutional segments. (MHR)

None

1980-09-01T23:59:59.000Z

123

Building Energy Software Tools Directory: HVAC Residential Load...  

NLE Websites -- All DOE Office Websites (Extended Search)

HVAC Residential Load Calcs HD for the iPad Carmel Software logo HVAC Residential Load Calcs HD is a comprehensive HVAC heating and cooling load calculation application for the...

124

Aero?acoustic predictions of automotive dashboard HVAC (heating, ventilating, and air?conditioning ducts).  

Science Conference Proceedings (OSTI)

The flow?induced noisegenerated by automotive climate control systems is today emerging as one of the main noisesources in a vehicle interior. Numerical simulation offers a good way to analyze these mechanisms and to identify the aerodynamic noisesources in an industrial context driven by permanent reduction in programs timing and development costs

Stephane Detry; Julien Manera; Yves Detandt; Diego d'Udekem

2010-01-01T23:59:59.000Z

125

Plutonium Finishing Plant (PFP) HVAC System Component Index  

SciTech Connect

This document lists safety class (SC) and safety significant (SS) components for the Heating Ventilation Air Conditioning (HVAC) and specifies the critical characteristics for Commercial Grade Items (CGI), as required by HNF-PRO-268 and HNF-PRO-18 19. These are the minimum specifications that the equipment must meet in order to properly perform its safety function. There may be several manufacturers or models that meet the critical characteristics for any one item. The Plutonium Finishing Plant (PFP) HVAC System includes sub-systems 25A through 25K. Specific system boundaries and justifications are contained in HNF-SD-CP-SDD-005, ''Definition and Means of Maintaining the Ventilation System Confinement Portion of the PFP Safety Envelope.'' The procurement requirements associated with the system necessitates procurement of some system equipment as Commercial Grade Items in accordance with HNF-PRO-268, ''Control of Purchased Items and Services.''

DIAZ, E.N.

2000-03-30T23:59:59.000Z

126

NREL's Advanced Thermal Conversion Laboratory at the Center for Buildings and Thermal Systems: On the Cutting-Edge of HVAC and CHP Technology (Revised)  

DOE Green Energy (OSTI)

This brochure describes how the unique testing capabilities of NREL's Advanced Thermal Conversion Laboratory at the Center For Buildings and Thermal Systems can help industry meet the challenge of developing the next generation of heating, ventilating, and air-conditioning (HVAC) and combined heat and power (CHP) equipment and concepts.

Not Available

2005-09-01T23:59:59.000Z

127

Transpired Solar Collector at NREL's Waste Handling Facility Uses Solar Energy to Heat Ventilation Air  

Energy.gov (U.S. Department of Energy (DOE))

Revised fact sheet describes the transpired solar collector that was installed on NREL's Waste handling Facility (WHF) in 1990 to preheat ventilation air. The electrically heated WHF was an ideal candidate for this technology - requiring a ventilation rate of 3,000 cubic feet per meter to maintain safe indoor conditions.

128

Grundfos HVAC OEM Efficient water hydraulics  

E-Print Network (OSTI)

Grundfos HVAC OEM Efficient water hydraulics for Heat Pumps Anders Mønsted GRUNDFOS Holding A/S Group Technical Key Account Manager HVAC OEM Project Management http://net.grundfos.com/doc/webnet/hv acoem/index.htmlOEM online #12;Introduction Grundfos Company Grundfos HVAC OEM Current Circulator Range

Oak Ridge National Laboratory

129

Definition and means of maintaining the ventilation system confinement portion of the PFP safety envelope  

Science Conference Proceedings (OSTI)

The Plutonium Finishing Plant Heating Ventilation and Cooling system provides for the confinement of radioactive releases to the environment and provides for the confinement of radioactive contamination within designated zones inside the facility. This document identifies the components and procedures necessary to ensure the HVAC system provides these functions. Appendices E through J provide a snapshot of non-safety class HVAC equipment and need not be updated when the remainder of the document and Appendices A through D are updated.

Dick, J.D.; Grover, G.A.; O`Brien, P.M., Fluor Daniel Hanford

1997-03-05T23:59:59.000Z

130

The influence of HVAC systems on secondary organic aerosol formation Michael S. Waring1  

E-Print Network (OSTI)

The influence of HVAC systems on secondary organic aerosol formation Michael S. Waring1 , Jeffrey A, ventilation, and air- conditioning (HVAC) system. This study models the influence of HVAC systems on SOA. The most influential HVAC parameters are the flow rates, particle filtration, and indoor temperature

Siegel, Jeffrey

131

Particle deposition in ventilation ducts  

SciTech Connect

Exposure to airborne particles is detrimental to human health and indoor exposures dominate total exposures for most people. The accidental or intentional release of aerosolized chemical and biological agents within or near a building can lead to exposures of building occupants to hazardous agents and costly building remediation. Particle deposition in heating, ventilation and air-conditioning (HVAC) systems may significantly influence exposures to particles indoors, diminish HVAC performance and lead to secondary pollutant release within buildings. This dissertation advances the understanding of particle behavior in HVAC systems and the fates of indoor particles by means of experiments and modeling. Laboratory experiments were conducted to quantify particle deposition rates in horizontal ventilation ducts using real HVAC materials. Particle deposition experiments were conducted in steel and internally insulated ducts at air speeds typically found in ventilation ducts, 2-9 m/s. Behaviors of monodisperse particles with diameters in the size range 1-16 {micro}m were investigated. Deposition rates were measured in straight ducts with a fully developed turbulent flow profile, straight ducts with a developing turbulent flow profile, in duct bends and at S-connector pieces located at duct junctions. In straight ducts with fully developed turbulence, experiments showed deposition rates to be highest at duct floors, intermediate at duct walls, and lowest at duct ceilings. Deposition rates to a given surface increased with an increase in particle size or air speed. Deposition was much higher in internally insulated ducts than in uninsulated steel ducts. In most cases, deposition in straight ducts with developing turbulence, in duct bends and at S-connectors at duct junctions was higher than in straight ducts with fully developed turbulence. Measured deposition rates were generally higher than predicted by published models. A model incorporating empirical equations based on the experimental measurements was applied to evaluate particle losses in supply and return duct runs. Model results suggest that duct losses are negligible for particle sizes less than 1 {micro}m and complete for particle sizes greater than 50 {micro}m. Deposition to insulated ducts, horizontal duct floors and bends are predicted to control losses in duct systems. When combined with models for HVAC filtration and deposition to indoor surfaces to predict the ultimate fates of particles within buildings, these results suggest that ventilation ducts play only a small role in determining indoor particle concentrations, especially when HVAC filtration is present. However, the measured and modeled particle deposition rates are expected to be important for ventilation system contamination.

Sippola, Mark R.

2002-09-01T23:59:59.000Z

132

Market assessment for active solar heating and cooling products. Category B: A survey of decision makers in the HVAC market place. Survey instruments  

DOE Green Energy (OSTI)

Telephone screener questionnaires and mail-out questionnaires for marketing surveys for solar heating and cooling equipment are presented. Questionnaires are included for the residential segment, industrial segment, HVAC professionals segment, builder/developer segment, and the commercial segment. No results are reported. (WHK)

Lilien, G. L.; Johnston, P. E.

1980-09-01T23:59:59.000Z

133

Buildings Energy Data Book: 5.3 Heating, Cooling, and Ventilation Equipment  

Buildings Energy Data Book (EERE)

3 3 Main Commercial Primary Energy Use of Heating and Cooling Equipment as of 1995 Heating Equipment | Cooling Equipment Packaged Heating Units 25% | Packaged Air Conditioning Units 54% Boilers 21% | Room Air Conditioning 5% Individual Space Heaters 2% | PTAC (2) 3% Furnaces 20% | Centrifugal Chillers 14% Heat Pumps 5% | Reciprocating Chillers 12% District Heat 7% | Rotary Screw Chillers 3% Unit Heater 18% | Absorption Chillers 2% PTHP & WLHP (1) 2% | Heat Pumps 7% 100% | 100% Note(s): Source(s): 1) PTHP = Packaged Terminal Heat Pump, WLHP = Water Loop Heat Pump. 2) PTAC = Packaged Terminal Air Conditioner BTS/A.D. Little, Energy Consumption Characteristics of Commercial Building HVAC Systems, Volume 1: Chillers, Refrigerant Compressors, and Heating Systems, Apr. 2001, Figure 5-5, p. 5-14 for cooling and Figure 5-10, p. 5-18 for heating

134

Radiative Heating Errors in Naturally Ventilated Air Temperature Measurements Made from Buoys*  

Science Conference Proceedings (OSTI)

Solar radiative heating errors in buoy-mounted, naturally ventilated air temperature sensors are examined. Data from sensors with multiplate radiation shields and collocated, fan-aspirated air temperature sensors from three buoy deployments ...

Steven P. Anderson; Mark F. Baumgartner

1998-02-01T23:59:59.000Z

135

Columbia Water & Light- Residential HVAC Rebate Program  

Energy.gov (U.S. Department of Energy (DOE))

Columbia Water & Light (CWL) provides an HVAC incentive for residential customers that are replacing an older heating and cooling system. Customers should submit the mechanical permit from a...

136

Review of Residential Ventilation Technologies.  

NLE Websites -- All DOE Office Websites (Extended Search)

Review of Residential Ventilation Technologies. Review of Residential Ventilation Technologies. Title Review of Residential Ventilation Technologies. Publication Type Journal Article LBNL Report Number LBNL-57730 Year of Publication 2007 Authors Russell, Marion L., Max H. Sherman, and Armin F. Rudd Journal HVAC&R Research Volume 13 Start Page Chapter Pagination 325-348 Abstract This paper reviews current and potential ventilation technologies for residential buildings in North America and a few in Europe. The major technologies reviewed include a variety of mechanical systems, natural ventilation, and passive ventilation. Key parameters that are related to each system include operating costs, installation costs, ventilation rates, heat recovery potential. It also examines related issues such as infiltration, duct systems, filtration options, noise, and construction issues. This report describes a wide variety of systems currently on the market that can be used to meet ASHRAE Standard 62.2. While these systems generally fall into the categories of supply, exhaust or balanced, the specifics of each system are driven by concerns that extend beyond those in the standard and are discussed. Some of these systems go beyond the current standard by providing additional features (such as air distribution or pressurization control). The market will decide the immediate value of such features, but ASHRAE may wish to consider modifications to the standard in the future.

137

Discussion of an Optimization Scheme for the Ground Source Heat Pump System of HVAC  

E-Print Network (OSTI)

With the implementation of the global sustainable development strategy, people pay more attention to renewable energy resources such as ground source heat pumps. The technology of ground source heat pump is widely applied to heat and cold. It is critical and important to know how to choose the terminal and make it workable. This paper makes a technical and economic comparison of various heating terminals (with the example of a north residential district which adopts ground source heat pump as the cold and heat source) and gets the optimum scheme.

Mu, W.; Wang, S.; Pan, S.; Shi, Y.

2006-01-01T23:59:59.000Z

138

An Evaluation of the HVAC Load Potential for Providing Load Balancing Service  

Science Conference Proceedings (OSTI)

This paper investigates the potential of providing aggregated intra-hour load balancing services using heating, ventilating, and air-conditioning (HVAC) systems. A direct-load control algorithm is presented. A temperature-priority-list method is used to dispatch the HVAC loads optimally to maintain consumer-desired indoor temperatures and load diversity. Realistic intra-hour load balancing signals were used to evaluate the operational characteristics of the HVAC load under different outdoor temperature profiles and different indoor temperature settings. The number of HVAC units needed is also investigated. Modeling results suggest that the number of HVACs needed to provide a {+-}1-MW load balancing service 24 hours a day varies significantly with baseline settings, high and low temperature settings, and the outdoor temperatures. The results demonstrate that the intra-hour load balancing service provided by HVAC loads meet the performance requirements and can become a major source of revenue for load-serving entities where the smart grid infrastructure enables direct load control over the HAVC loads.

Lu, Ning

2012-09-30T23:59:59.000Z

139

Quantitative Methods for Comparing Different HVAC Control Schemes  

E-Print Network (OSTI)

Experimentally comparing the energy usage and comfort characteristics of different controllers in heating, ventilation, and air-conditioning (HVAC) systems is difficult because variations in weather and occupancy conditions preclude the possibility of establishing equivalent experimental conditions across the order of hours, days, and weeks. This paper is concerned with defining quantitative metrics of energy usage and occupant comfort, which can be computed and compared in a rigorous manner that is capable of determining whether differences between controllers are statistically significant in the presence of such environmental fluctuations. Experimental case studies are presented that compare two alternative controllers (a schedule controller and a hybrid system learning-based model predictive controller) to the default controller in a building-wide HVAC system. Lastly, we discuss how our proposed methodology may also be able to quantify the efficiency of other building automation systems.

Aswani, Anil; Taneja, Jay; Krioukov, Andrew; Culler, David; Tomlin, Claire

2012-01-01T23:59:59.000Z

140

Dehumidification and cooling loads from ventilation air  

SciTech Connect

The importance of controlling humidity in buildings is cause for concern, in part, because of indoor air quality problems associated with excess moisture in air-conditioning systems. But more universally, the need for ventilation air has forced HVAC equipment (originally optimized for high efficiency in removing sensible heat loads) to remove high moisture loads. To assist cooling equipment and meet the challenge of larger ventilation loads, several technologies have succeeded in commercial buildings. Newer technologies such as subcool/reheat and heat pipe reheat show promise. These increase latent capacity of cooling-based systems by reducing their sensible capacity. Also, desiccant wheels have traditionally provided deeper-drying capacity by using thermal energy in place of electrical power to remove the latent load. Regardless of what mix of technologies is best for a particular application, there is a need for a more effective way of thinking about the cooling loads created by ventilation air. It is clear from the literature that all-too-frequently, HVAC systems do not perform well unless the ventilation air loads have been effectively addressed at the original design stage. This article proposes an engineering shorthand, an annual load index for ventilation air. This index will aid in the complex process of improving the ability of HVAC systems to deal efficiently with the amount of fresh air the industry has deemed useful for maintaining comfort in buildings. Examination of typical behavior of weather shows that latent loads usually exceed sensible loads in ventilation air by at least 3:1 and often as much as 8:1. A designer can use the engineering shorthand indexes presented to quickly assess the importance of this fact for a given system design. To size those components after they are selected, the designer can refer to Chapter 24 of the 1997 ASHRAE Handbook--Fundamentals, which includes separate values for peak moisture and peak temperature.

Harriman, L.G. III [Mason-Grant, Portsmouth, NH (United States); Plager, D. [Quantitative Decision Support, Portsmouth, NH (United States); Kosar, D. [Gas Research Inst., Chicago, IL (United States)

1997-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "hvac heating ventilation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Renovating Residential HVAC Systems HVAC Systems  

E-Print Network (OSTI)

- 1 - LBNL 57406 Renovating Residential HVAC Systems HVAC Systems J.A. McWilliams and I.S. Walker and Air Conditioning), and Stacy Hunt and Ananda Harzell (IBACOS). #12;- 3 - Renovating Residential HVAC Guideline for Residential HVAC Retrofits (http

142

Realt-Time Building Occupancy Sensing for Supporting Demand Driven HVAC Operations  

E-Print Network (OSTI)

Accurate knowledge of localised and real-time occupancy numbers can have compelling control applications for Heating, Ventilation and Air-conditioning (HVAC) systems. However, a precise and reliable measurement of occupancy still remains difficult. Existing technologies are plagued with a number of issues ranging from unreliable data, maintaining privacy and sensor drift. More effective control of HVAC systems may be possible using a smart sensing network for occupancy detection. A low-cost and non-intrusive sensor network is deployed in an open-plan office, combining information such as sound level and motion, to estimate occupancy numbers, while an infrared camera is implemented to establish ground truth occupancy levels. Symmetrical uncertainty analysis is used for feature selection, and selected multi-sensory features are fused using a neuralnetwork model, with occupancy estimation accuracy reaching up to 84.59%. The proposed system offers promising opportunities for reliable occupancy sensing, capable of supporting demand driven HVAC operations.

Ekwevugbe, T.; Brown, N.; Pakka, V.

2013-01-01T23:59:59.000Z

143

On the capacity limits of hvac duct channel for high-speed internet access  

E-Print Network (OSTI)

Abstract—In this paper, we report theoretical and experimental channel-capacity estimates of heating, ventilation, and air conditioning (HVAC) ducts based on multicarrier transmission that uses-ary quadrature amplitude modulation and measured channel responses at the 2.4-GHz industrial, scientific, and medical band. It is shown theoretically that data rates in excess of 1 Gb/s are possible over distances up to 500 m in straight ducts in which reflections have been suppressed. Our experimental results also show that even in the case of more complex HVAC duct networks (i.e., HVAC duct networks that include bends, tees, etc.) data rates over 2 Gb/s are possible. Our estimations in this case are valid for distances of up to 22 m, which was the maximum distance of our experimental setup. These experimental results, measured with a large-scale testbed set

Ariton E. Xhafa; Ozan K. Tonguz; Ahmet G. Cepni; Student Member; Daniel D. Stancil; Pavel V. Nikitin; Dagfin Brodtkorb

2005-01-01T23:59:59.000Z

144

Energy Renovations: Volume 14: HVAC - A Guide for Contractors to Share with Homeowners  

SciTech Connect

This report was prepared by PNNL for DOE's Building America program and is intended as a guide that energy performance contractors can share with homeowners to describe various energy-efficient options for heating, cooling, and ventilating existing homes. The report provides descriptions of many common and not-so-common HVAC systems, including their advantages and disadvantages, efficiency ranges and characteristics of high-performance models, typical costs, and climate considerations. The report also provides decision trees and tables of useful information for homeowners who are making decisions about adding, replacing, or upgrading existing HVAC equipment in their homes. Information regarding home energy performance assessments (audits) and combustion safety issues when replacing HVAC equipment are also provided.

Gilbride, Theresa L.; Baechler, Michael C.; Hefty, Marye G.; Hand, James R.; Love, Pat M.

2011-08-29T23:59:59.000Z

145

Can ASHRAE Standard 62-1989 Requirements be Satisfied while Maintaining Moisture Control using Stock HVAC Equipment in Hot, Humid Climates?  

E-Print Network (OSTI)

Outdoor air intake rates are studied to determine their impacts on moisture control in buildings, especially in hot, humid climates. Key impacts of outdoor air intake rates can be readily modeled and studied using computer simulations of building energy costs. Increased ventilation rates create real capital and operating costs for building owners and operators, with implications beyond energy costs relating to increased ventilation requirements. In hot, humid climates, increased ventilation rates increase latent loads more than sensible loads, requiring lower sensible heat ratios. Stock HVAC package units and split systems are not available with the requisite sensible heat ratios, and cannot maintain moisture control in small commercial buildings without costly modifications.

Turner, S. C.

1996-01-01T23:59:59.000Z

146

SURFACE INDUSTRIAL HVAC SYSTEM DESCRIPTION DOCUMENT  

SciTech Connect

The purpose of this system description document (SDD) is to establish requirements that drive the design of the surface industrial heating, ventilation, and air-conditioning (HVAC) system and its bases to allow the design effort to proceed to license application. This SDD will be revised at strategic points as the design matures. This SDD identifies the requirements and describes the system design, as it currently exists, with emphasis on attributes of the design provided to meet the requirements. This SDD is an engineering tool for design control; accordingly, the primary audience and users are design engineers. This SDD is part of an iterative design process. It leads the design process with regard to the flowdown of upper tier requirements onto the system. Knowledge of these requirements is essential to performing the design process. The SDD follows the design with regard to the description of the system. The description that provided in this SDD reflects the current results of the design process.

M.M. Ansari

2005-04-05T23:59:59.000Z

147

Carbon-dioxide-controlled ventilation study  

Science Conference Proceedings (OSTI)

The In-House Energy Management (IHEM) Program has been established by the U.S. Department of Energy to provide funds to federal laboratories to conduct research on energy-efficient technology. The Energy Sciences Department of Pacific Northwest Laboratory (PNL) was tasked by IHEM to research the energy savings potential associated with reducing outdoor-air ventilation of buildings. By monitoring carbon dioxide (CO{sub 2}) levels in a building, outdoor air provided by the heating, ventilating, and air-conditioning (HVAC) system can be reduced to the percentage required to maintain satisfactory CO{sub 2} levels rather than ventilating with a higher outdoor-air percentage based on an arbitrary minimum outdoor-air setting. During summer months, warm outdoor air brought into a building for ventilation must be cooled to meet the appropriate cooling supply-air temperature, and during winter months, cold outdoor air must be heated. By minimizing the amount of hot or cold outdoor air brought into the HVAC system, the supply air requires less cooling or heating, saving energy and money. Additionally, the CO{sub 2} levels in a building can be monitored to ensure that adequate outdoor air is supplied to a building to maintain air quality levels. The two main considerations prior to implementing CO{sub 2}-based ventilation control are its impact on energy consumption and the adequacy of indoor air quality (IAQ) and occupant comfort. To address these considerations, six portable CO{sub 2} monitors were placed in several Hanford Site buildings to estimate the adequacy of office/workspace ventilation. The monitors assessed the potential for reducing the flow of outdoor-air to the buildings. A candidate building was also identified to monitor various ventilation control strategies for use in developing a plan for implementing and assessing energy savings.

McMordie, K.L.; Carroll, D.M.

1994-05-01T23:59:59.000Z

148

Building Energy Software Tools Directory : HVAC Solution  

NLE Websites -- All DOE Office Websites (Extended Search)

HVAC Solution Back to Tool Screenshot for HVAC Solution. Screenshot for HVAC Solution. Screenshot for HVAC Solution...

149

Life Cycle cost Analysis of Waste Heat Operated Absorption Cooling Systems for Building HVAC Applications  

E-Print Network (OSTI)

In this paper, life cycle cost analysis (LCCA) of waste heat operated vapour absorption air conditioning system (VARS) incorporated in a building cogeneration system is presented and discussed. The life cycle cost analysis (LCCA) based on present worth cost (PWC) method, which covers the initial costs, operating costs, maintenance costs, replacement costs and salvage values is the useful tool to merit various cooling and power generation systems for building applications. A life cycle of 23 years was used to calculate the PWC of the system for annual operating hours of 8760 and the same is compared with the electric based vapour compression chiller (VCRS) of same capacity. The life cycle cost (LCC) of waste heat operated absorption chiller is estimated to be US $ 1.5 million which is about 71.5 % low compared to electric powered conventional vapour compression chiller. From the analysis it was found that the initial cost of VARS system was 125 % higher than that of VCRS, while the PWC of operating cost of VARS was 78.2 % lower compared to VCRS. The result shows that the waste heat operated VARS would be preferable from the view point of operating cost and green house gas emission reduction.

Saravanan, R.; Murugavel, V.

2010-01-01T23:59:59.000Z

150

Theoretical Minimum Energy Use of a Building HVAC System  

E-Print Network (OSTI)

This paper investigates the theoretical minimum energy use required by the HVAC system in a particular code compliant office building. This limit might be viewed as the "Carnot Efficiency" for HVAC system. It assumes that all ventilation and air conditioning in the building are provided using the minimum energy value that does not violate physical law.

Tanskyi, O.

2011-01-01T23:59:59.000Z

151

Screening Analysis for EPACT-Covered Commercial HVAC and Water-Heating Equipment  

SciTech Connect

The Energy Policy and Conservation Act (EPCA) as amended by the Energy Policy Act of 1992 (EPACT) establishes that the U.S. Department of Energy (DOE) regulate efficiency levels of certain categories of commercial heating, cooling, and water-heating equip-ment. EPACT establishes the initial minimum efficiency levels for products falling under these categories, based on ASHRAE/IES Standard 90.1-1989 requirements. EPCA states that, if ASHRAE amends Standard 90.1-1989 efficiency levels, then DOE must establish an amended uniform national manufacturing standard at the minimum level specified in the amended Standard 90.1 and that it can establish higher efficiency levels if they would result in significant additional energy savings. Standard 90.1-1999 increases minimum efficiency levels for some of the equipment categories covered by EPCA 92. DOE conducted a screening analysis to determine the energy-savings potential for EPACT-covered products meet and exceeding these levels. This paper describes the methodology, data assumptions, and results of the analysis.

Somasundaram, Sriram; Armstrong, Peter R.; Belzer, David B.; Gaines, Suzanne C.; Hadley, Donald L.; Katipumula, S.; Smith, David L.; Winiarski, David W.

2000-04-25T23:59:59.000Z

152

Commercial Building HVAC Energy Usage in Semi-Tropical Climates  

E-Print Network (OSTI)

The design of heating and cooling equipment in semi-tropical climates presents some design considerations and limitations not so prevalent in temperate climates. In some cases, the heating season may be non-existent for all practical purposes. Another consideration is the high ventilation loads due to cooling the moist air prevalent in semi-tropical climates. This paper describes a computer program which assesses all the pertinent variables which comprise the annual heating and cooling energy requirements for commercial buildings. It is then suggested that this computer program would be valuable in determining the changes one could expect in annual energy usage by varying certain building design parameters. Secondly, a small office building actually constructed in Central Florida in which the author designed the Heating and Cooling HVAC system is described. Tradeoffs are presented showing the effects of changes in these building design parameters.

Worbs, H. E.

1987-01-01T23:59:59.000Z

153

Application of Functional Link Neural Network to HVAC Thermal Dynamic System Identification  

E-Print Network (OSTI)

Abstract — Recent efforts to incorporate aspects of artificial intelligence into the design and operation of automatic control systems have focused attention on techniques such as fuzzy logic, artificial neural networks, and expert systems. The use of computers for direct digital control highlights the recent trend toward more effective and efficient heating, ventilating, and airconditioning (HVAC) control methodologies. Researchers in the HVAC field have stressed the importance of self learning in building control systems and have encouraged further studies in the integration of optimal control and other advanced techniques into the formulation of such systems. Artificial neural networks can also be used to emulate the plant dynamics, in order to estimate future plant outputs and obtain plant input/output sensitivity information for on-line neural control adaptation. This paper describes a functional link neural network approach to performing the HVAC thermal dynamic system identification. Methodologies to reduce inputs of the functional link network to reduce the complexity and speed up the training speed will be presented. Analysis and comparison between the functional link network approach and the conventional network approach for the HVAC thermal modeling will also be presented. Index Terms—Functional link, HVAC, intelligent control, neural network, system identification.

Jason Teeter; Mo-yuen Chow; Senior Member

1998-01-01T23:59:59.000Z

154

Pedernales Electric Cooperative - HVAC Rebate Program | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Pedernales Electric Cooperative - HVAC Rebate Program Pedernales Electric Cooperative - HVAC Rebate Program Pedernales Electric Cooperative - HVAC Rebate Program < Back Eligibility Commercial Residential Commercial Residential Savings Category Heating & Cooling Commercial Heating & Cooling Cooling Heat Pumps Program Info State Texas Program Type Utility Rebate Program Utility Rebate Program Rebate Amount Central AC with Gas Furnace: $300 - $400/unit Heat Pump: $400 - $500/unit Dual-Fuel Heat Pump: $400 - $500/unit Geothermal Heat Pump: $1,000/unit Water-Source Heat Pump: $1,000/unit Provider Pedernales Electric Cooperative Pedernales Electric Cooperative offers equipment rebates to members who install energy efficient HVAC equipment. Eligible equipment includes:

155

Field comparison of conventional HVAC systems with a residential gas-engine-driven heat pump  

SciTech Connect

Through its Office of Federal Energy Management Program (FEMP), the US Department of Energy (DOE) provides technical and administrative support to federal agency programs directed at reducing energy consumption and cost in federal buildings and facilities. One such program is the New Technology Demonstration Program (NTDP). In this context, NTDP is a demonstration of a US energy-related technology at a federal site. Through a partnership with a federal site, the utility serving the site, a manufacturer of an energy-related technology, and other organizations associated with these interests, DOE can evaluate new technologies. The partnership of these interests is secured through a Cooperative Research and Development Agreement (CRADA). The Fort Sam Houston (San Antonio, Texas) NTDP is a field evaluation of a 3-ton gas-engine-driven residential heat pump. Details of the technical approach used in the evaluation, including instrumentation and methodology, are presented. Dynamic performance maps, based on field data, are developed for the existing residential furnaces and air conditioners at Fort Sam Houston. These maps are the basis for comparisons between the candidate and current equipment. The approach offers advantages over pre/post-measure evaluations by decoupling the measured equipment performance from the effects of different envelope characteristics, occupant behavior, and weather.

Miller, J.D.

1994-08-01T23:59:59.000Z

156

Buildings Energy Data Book: 5.3 Heating, Cooling, and Ventilation Equipment  

Buildings Energy Data Book (EERE)

8 8 Major Residential HVAC Equipment Lifetimes, Ages, and Replacement Picture Equipment Type Central Air Conditioners 8 - 14 11 8 5,354 Heat Pumps 9 - 15 12 8 1,260 Furnaces Electric 10 - 20 15 11 N.A. Gas-Fired 12 - 17 15 11 2,601 Oil-Fired 15 - 19 17 N.A. 149 Gas-Fired Boilers (1) 17 - 24 20 17 204 Note(s): Source(s): Lifetimes based on use by the first owner of the product, and do not necessarily indicate that the product stops working after this period. A replaced unit may be discarded or used elsewhere. 1) 2005 average stock age is for gas- and oil-fired steam and hot water boilers. Appliance Magazine, U.S. Appliance Industry: Market Share, Life Expectancy & Replacement Market, and Saturation Levels, January 2010, p. 10 for service and average lifetimes, and units to be replaced; ASHRAE, 1999 ASHRAE Handbook: HVAC Applications, Table 3, p. 35.3 for boilers service lifetimes; and

157

RELIABILITY ANALYSIS OF THE ELECTRICAL POWER DISTRIBUTION SYSTEM TO SELECTED PORTIONS OF THE NUCLEAR HVAC SYSTEM  

Science Conference Proceedings (OSTI)

A design requirement probability of 0.01 or less in a 4-hour period ensures that the nuclear heating, ventilation, and air-conditioning (HVAC) system in the primary confinement areas of the Dry Transfer Facilities (DTFs) and Fuel Handling Facility (FHF) is working during a Category 1 drop event involving commercial spent nuclear fuel (CSNF) assemblies (BSC 2004a , Section 5.1.1.48). This corresponds to an hourly HVAC failure rate of 2.5E-3 per hour or less, which is contributed to by two dominant causes: equipment failure and loss of electrical power. Meeting this minimum threshold ensures that a Category 1 initiating event followed by the failure of HVAC is a Category 2 event sequence. The two causes for the loss of electrical power include the loss of offsite power and the loss of onsite power distribution. Thus, in order to meet the threshold requirement aforementioned, the failure rate of mechanical equipment, loss of offsite power, and loss of onsite power distribution must be less than or equal to 2.5E-3 per hour for the nuclear HVAC system in the primary confinement areas of the DTFs and FHF. The loss of offsite power occurs at a frequency of 1.1E-5 per hour (BSC 2004a, Section 5.1.1.48). The purpose of this analysis is to determine the probability of occurrence of the unavailability of the nuclear HVAC system in the primary confinement areas of the DTFs and FHF due to loss of electrical power. In addition, this analysis provides insights on the contribution to the unavailability of the HVAC system due to equipment failure. The scope of this analysis is limited to finding the frequency of loss of electrical power to the nuclear HVAC system in the primary confinement areas of the DTFs and FHF.

N. Ramirez

2004-12-16T23:59:59.000Z

158

Assessment of organic compound exposures, thermal comfort parameters, and HVAC system-driven air exchange rates in public school portable classrooms in California  

E-Print Network (OSTI)

SPECIFY UNITS) when heat (of HVAC) is turned off?using the heat (from HVAC)? A. B. C. D. January Februaryair conditionmg (from HVAC)? A. B. C. D. January February

Shendell, Derek Garth

2010-01-01T23:59:59.000Z

159

Proposed Design for a Coupled Ground-Source Heat Pump/Energy Recovery Ventilator System to Reduce Building Energy Demand.  

E-Print Network (OSTI)

??The work presented in this thesis focuses on reducing the energy demand of a residential building by using a coupled ground-source heat pump/energy recovery ventilation… (more)

McDaniel, Matthew Lee

2011-01-01T23:59:59.000Z

160

Laboratory Testing of the Heating Capacity of Air-Source Heat Pumps at Low Outdoor Temperature Conditions  

Science Conference Proceedings (OSTI)

Air-source heat pump systems offer an alternative to the common heating, ventilating, and air conditioning (HVAC) configuration of single split unitary air conditioners with gas heating. In simple terms, heat pumps are traditional air conditioning units with the added capability of running in reverse as required by the building load. Thus, where the traditional air conditioning unit has an indoor evaporator to remove heat from the space and an outdoor condenser to reject heat to the ambient environment, ...

2010-12-22T23:59:59.000Z

Note: This page contains sample records for the topic "hvac heating ventilation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Building Technologies Office: Recovery Act-Funded HVAC Research Projects  

NLE Websites -- All DOE Office Websites (Extended Search)

HVAC Research Projects to someone by E-mail HVAC Research Projects to someone by E-mail Share Building Technologies Office: Recovery Act-Funded HVAC Research Projects on Facebook Tweet about Building Technologies Office: Recovery Act-Funded HVAC Research Projects on Twitter Bookmark Building Technologies Office: Recovery Act-Funded HVAC Research Projects on Google Bookmark Building Technologies Office: Recovery Act-Funded HVAC Research Projects on Delicious Rank Building Technologies Office: Recovery Act-Funded HVAC Research Projects on Digg Find More places to share Building Technologies Office: Recovery Act-Funded HVAC Research Projects on AddThis.com... About Take Action to Save Energy Partner with DOE Activities Appliances Research Building Envelope Research Windows, Skylights, & Doors Research Space Heating & Cooling Research

162

HVAC Equipment Design Options for Near-Zero-Energy Homes (NZEH) -A Stage 2 Scoping Assessment  

SciTech Connect

Although the energy efficiency of heating, ventilating, and air-conditioning (HVAC) equipment has increased substantially in recent years, new approaches are needed to continue this trend. Conventional unitary equipment and system designs have matured to a point where cost-effective, dramatic efficiency improvements that meet near-zero-energy housing (NZEH) goals require a radical rethinking of opportunities to improve system performance. The large reductions in HVAC energy consumption necessary to support the NZEH goals require a systems-oriented analysis approach that characterizes each element of energy consumption, identifies alternatives, and determines the most cost-effective combination of options. In particular, HVAC equipment must be developed that addresses the range of special needs of NZEH applications in the areas of reduced HVAC and water heating energy use, humidity control, ventilation, uniform comfort, and ease of zoning. This report describes results of a scoping assessment of HVAC system options for NZEH homes. ORNL has completed a preliminary adaptation, for consideration by The U.S. Department of Energy, Energy Efficiency and Renewable Energy Office, Building Technologies (BT) Program, of Cooper's (2001) stage and gate planning process to the HVAC and Water Heating element of BT's multi-year plan, as illustrated in Figure 1. In order to adapt to R&D the Cooper process, which is focused on product development, and to keep the technology development process consistent with an appropriate role for the federal government, the number and content of the stages and gates needed to be modified. The potential federal role in technology development involves 6 stages and 7 gates, but depending on the nature and status of the concept, some or all of the responsibilities can flow to the private sector for product development beginning as early as Gate 3. In the proposed new technology development stage and gate sequence, the Stage 2 'Scoping Assessment' provides the deliverable leading into the Gate 3 'Scoping Assessment Screen'. This report is an example of a Stage 2 deliverable written to document the screening of options against the Gate 3 criteria and to support DOE decision making and option prioritization. The objective of this scoping assessment was to perform a transparent evaluation of the HVAC system options for NZEH based on the applying the Gate 3 criteria uniformly to all options.

Baxter, Van D [ORNL

2005-11-01T23:59:59.000Z

163

HVAC Equipment Rebate Program | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

HVAC Equipment Rebate Program HVAC Equipment Rebate Program HVAC Equipment Rebate Program < Back Eligibility Agricultural Commercial Industrial Installer/Contractor Institutional Multi-Family Residential Nonprofit Schools Savings Category Heating & Cooling Commercial Heating & Cooling Heating Cooling Heat Pumps Maximum Rebate Rebates of greater than $5,000 require pre-approval Program Info Funding Source Efficiency Vermont Public Benefit Fund Expiration Date 06/30/2013 State Vermont Program Type State Rebate Program Rebate Amount Varies depending on technology and efficiency Provider Efficiency Vermont NOTE: Rebate reservations are required for all boiler and furnace projects. Efficiency Vermont offers rebates for commercial installations of high-efficiency HVAC equipment and controls. For businesses and purchases

164

Energy-saving strategies with personalized ventilation in cold climates  

E-Print Network (OSTI)

designs of personalized ventilation, International Journal of heating, Ventilation and Refrigeration

Schiavon, Stefano; Melikov, Arsen

2009-01-01T23:59:59.000Z

165

Distributed Control of HVAC&R Networks  

E-Print Network (OSTI)

Heating, ventilation, air conditioning, and refrigeration (HVAC&R) systems are a major component of worldwide energy consumption, and frequently consist of complex networks of interconnected components. The ubiquitous nature of these systems suggests that improvements in their energy efficiency characteristics can have significant impact on global energy consumption. The complexity of the systems, however, means that decentralized control schemes will not always suffice to balance competing goals of energy efficiency and occupant comfort and safety. This dissertation proposes control solutions for three facets of this problem. The first is a cascaded control architecture for actuators, such as electronic expansion valves, that provides excellent disturbance rejection and setpoint tracking characteristics, as well as partial nonlinearity compensation without a compensation model. The second solution is a hierarchical control architecture for multiple-evaporator vapor compression systems that uses model predictive control (MPC) at both the supervisory and component levels. The controllers leverage the characteristics of MPC to balance energy efficiency with occupant comfort. Since the local controllers are decentralized, the architecture retains a degree of modularity—changing one component does not require changing all controllers. The final contribution is a new distributed optimization algorithm that is rooted in distributed MPC and is especially motivated by HVAC&R systems. This algorithm allows local level optimizers to iterate to a centralized solution. The optimizers have no knowledge of any plant other than the plant they are associated with, and only need to communicate with their immediate neighbors. The efficacy of the algorithm is displayed with two sets of examples. One example is simulation based, wherein a building is modeled in the EnergyPlus software suite. The other is an experimental example. In this example, the algorithm is applied to a multiple evaporator vapor compression system. In both cases the design method is discussed, and the ability of the algorithm to reduce energy consumption when properly applied is demonstrated.

Elliott, Matthew Stuart

2013-08-01T23:59:59.000Z

166

Energy Savings with Energy-Efficient HVAC Systems in Commercial Buildings of Hong Kong  

E-Print Network (OSTI)

Hong Kong has seen a dramatic increase in energy consumption in recent years, particularly electricity use in commercial buildings. The growth of electricity demand in future years is crucial both economically and environmentally. As over half of the electricity in Hong Kong is consumed by commercial buildings, and heating, ventilation and air-conditioning (HVAC) is the largest end-user in such buildings, improving the efficiency of HVAC systems in commercial buildings, is the key measure to take in Hong Kong for sustainable development. In this study, the major factors influencing the electricity use of HVAC systems are studied with the building energy simulation program EnergyPlus, which include chiller efficiency, space cooling temperature, variable vs. constant air flow, fan efficiency, lighting intensity and building envelope. From the analysis of the simulation results, it can be found that substantial energy-saving potential exists through improving the efficiency of HVAC systems in commercial buildings, and a combination of desirable system parameters for energy efficiency of commercial building is proposed.

Yang, J.; Chan, K.; Wu, X.

2006-01-01T23:59:59.000Z

167

How refrigeration, heating, ventilation, and air conditioning service technicians learn from troubleshooting (Dissertation ABstract)  

E-Print Network (OSTI)

The purpose of this study was to understand how refrigeration, heating, ventilation, and air conditioning (RHVAC) service technicians (techs) learned from troubleshooting. This understanding resulted in instructional and curricular strategies designed to help community colleges prepare vocational students to learn more effectively from informal workplace learning. RHVAC techs were studied because they increasingly learn their trade skills through a combination of formal schooling and informal workplace learning, though many still learn their trade almost exclusively in the workplace. Even those with formal training require considerable workplace experience to become fully competent. Troubleshooting is a major job function for RHVAC service techs, and troubleshooting

Denis F. H. Green

2006-01-01T23:59:59.000Z

168

VENTILATION MODEL REPORT  

SciTech Connect

The purpose of the Ventilation Model is to simulate the heat transfer processes in and around waste emplacement drifts during periods of forced ventilation. The model evaluates the effects of emplacement drift ventilation on the thermal conditions in the emplacement drifts and surrounding rock mass, and calculates the heat removal by ventilation as a measure of the viability of ventilation to delay the onset of peak repository temperature and reduce its magnitude. The heat removal by ventilation is temporally and spatially dependent, and is expressed as the fraction of heat carried away by the ventilation air compared to the fraction of heat produced by radionuclide decay. One minus the heat removal is called the wall heat fraction, or the remaining amount of heat that is transferred via conduction to the surrounding rock mass. Downstream models, such as the ''Multiscale Thermohydrologic Model'' (BSC 2001), use the wall heat fractions as outputted from the Ventilation Model to initialize their postclosure analyses.

V. Chipman

2002-10-31T23:59:59.000Z

169

Business reasons for utilizing renewable energy applications in facilities to assist in extending the life of the heating ventilation and air conditioning systems .  

E-Print Network (OSTI)

??This research is intended to discover business reasons for utilizing renewable energy applications in buildings to help extend the life of the heating, ventilation and… (more)

Thompson, Glendon Raymond

2008-01-01T23:59:59.000Z

170

HVAC Maintenance and Technologies  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

HVAC - HVAC - Maintenance and Technologies Federal Utility Partnership Working Group Meeting Providence, Rhode Island April 15, 2010 BY Ramin Faramarzi, P.E. Technology Test Centers (TTC) Design and Engineering Services Southern California Edison (SCE) www.sce.com/rttc 2 Outline * Introduction to SCE's TTC * Overview of energy challenges in California (CA) * Role of HVAC in CA's energy and demand equations * Factors affecting HVAC performance * Focus on SCE's research on maintenance faults * Next generation of HVAC equipment * HVAC technologies on SCE's TTC radar * Black boxes - do they all work? 3 SCE's Technology Test Centers * SCE applied research facilities located in Irwindale, CA comprised of 3 test beds: * Refrigeration * HVAC * Lighting * Coming Soon! - A new ZNE lab 4 Refrigeration Testing

171

HVAC Installed Performance  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

HVAC Installed Performance HVAC Installed Performance ESI, Tim Hanes Context * The building envelope has historically been the focus in residential homes. * The largest consumer of energy in residential homes is typically the HVAC system. * Testing the performance of the HVAC system has not been pursued to its full potential. Technical Approach * Currently very little performance testing is being done to the HVAC system. * The only way to know if a HVAC system is operating correctly is to measure the Btu/h. * This should be done at the equipment and at the the system. Recommended Guidance * Training of HVAC technicians, installers, and salespeople is a must. * If only the technician is trained than implementing the change will not happen. * Public awareness of proper installation and its

172

Self-Correcting HVAC Controls: Algorithms for Sensors and Dampers in Air-Handling Units  

SciTech Connect

This report documents the self-correction algorithms developed in the Self-Correcting Heating, Ventilating and Air-Conditioning (HVAC) Controls project funded jointly by the Bonneville Power Administration and the Building Technologies Program of the U.S. Department of Energy. The algorithms address faults for temperature sensors, humidity sensors, and dampers in air-handling units and correction of persistent manual overrides of automated control systems. All faults considered create energy waste when left uncorrected as is frequently the case in actual systems.

Fernandez, Nicholas; Brambley, Michael R.; Katipamula, Srinivas

2009-12-31T23:59:59.000Z

173

Experimental Evaluation of a Downsized Residential Air Distribution System: Comfort and Ventilation Effectiveness  

SciTech Connect

Good air mixing not only improves thermal comfort Human thermal comfort is the state of mind that expresses satisfaction with the surrounding environment, according to ASHRAE Standard 55. Achieving thermal comfort for most occupants of buildings or other enclosures is a goal of HVAC design engineers. but also enhances ventilation effectiveness by inducing uniform supply-air diffusion. In general, the performance of an air distribution system in terms of comfort and ventilation effectiveness is influenced by the supply air temperature, velocity, and flow rate, all of which are in part dictated by the HVAC (Heating Ventilation Air Conditioning) In the home or small office with a handful of computers, HVAC is more for human comfort than the machines. In large datacenters, a humidity-free room with a steady, cool temperature is essential for the trouble-free system as well as the thermal load attributes. Any potential deficiencies associated with these design variables can be further exacerbated by an improper proximity of the supply and return outlets with respect to the thermal and geometrical characteristics of the indoor space. For high-performance houses, the factors influencing air distribution performance take on an even greater significance because of a reduced supply-air design flow rate resulting from downsized HVAC systems.

Jalalzadeh-Azar, A. A.

2007-01-01T23:59:59.000Z

174

HVAC Equipment Design Options for Near-Zero-Energy Homes - Scoping Assessment of Radiant Panel Distribution System Options  

Science Conference Proceedings (OSTI)

Although the energy efficiency of heating, ventilating, and air-conditioning (HVAC) equipment has increased substantially in recent years, new approaches are needed to continue this trend. Conventional unitary equipment and system designs have matured to a point where cost-effective, dramatic efficiency improvements that meet near-zero-energy housing (NZEH) goals require a radical rethinking of opportunities to improve system performance. The large reductions in HVAC energy consumption necessary to support the NZEH goals require a systems-oriented analysis approach that characterizes each element of energy consumption, identifies alternatives, and determines the most cost-effective combination of options. In particular, HVAC equipment must be developed that addresses the range of special needs of NZEH applications in the areas of reduced HVAC and water heating energy use, humidity control, ventilation, uniform comfort, and ease of zoning. In FY05, ORNL conducted a scoping-level assessment of HVAC system options for NZEH homes (Baxter 2005). That report examined some twenty HVAC and water heating (HVAC/WH) systems in two 1800 ft2 houses--one constructed to Building America Research Benchmark standards and one a prototype NZEH. Both centrally ducted and two-zone systems were examined in that study. The highest scoring options using the ranking criteria described in that report were air-source and ground-source integrated heat pumps (IHP), and these were selected by DOE for further development. Among the feedback received to the FY05 report was a comment that systems using radiant panel (floor or ceiling) distribution options were not included among the system examined. This present report describes an assessment of a few such radiant panel systems under the same analysis and ranking criteria used in Baxter (2005). The rankings of the radiant system options reported herein are based on scoring by the team of building equipment researchers at ORNL. It is DOE's prerogative to revisit the criteria and obtain scoring from additional perspectives as part of its decision making process. If the criteria change, the ORNL team will be happy to re-score.

Baxter, Van David [ORNL

2007-06-01T23:59:59.000Z

175

Occupancy sensors for HVAC gaining in hotel industry  

SciTech Connect

The hotel industry is overcoming its skepticism as occupancy sensors with built-in thermistors to control heating, ventilating, and air conditioning (HVAC) units demonstrate their ability to cut energy costs as much as 30%. Despite the successful demonstrations and acceptance by Holiday Inn, some hotel managers of other chains continue to resist. Occupancy sensors have either ultrasonic or infrared signals, but differ from lighting control devices by also having internal thermistors and remote door switches. This allows the rooms to reach comfort levels only when the guest is present since occupants are only minimally affected if temperatures are modified during unoccupied periods. The system works best for roadside-type motels rather than convention hotels, where occupants are in and out of their rooms.

Ladd, C.

1985-12-02T23:59:59.000Z

176

Numerical Simulation of a Displacement Ventilation System with Multi-heat Sources and Analysis of Influential Factors  

E-Print Network (OSTI)

Displacement ventilation (DV) is a promising ventilation concept due to its high ventilation efficiency. In this paper, the application of the CFD method, the velocity and temperature fields of three-dimensional displacement ventilation systems with double heat sources are numerically simulated. The model is verified by experimental data. The results of the study show that thermal stratification characteristics exist in indoor temperature fields. The paper also analyzes the influence of different influential factors, e.g., the distance between heat sources, temperature of heat source, heat characteristics of the wall and outdoor temperature. It was found that the human requirement for comfort is satisfied easily when the distance between heat sources is long. Under the conditions simulated in this paper, when the distance was more than 0.8m, the temperature distribution tended to be average and steady, and it did not change as the distance changed. Second, the temperature change of the thermal current has a large influence on the indoor temperature. The rise in thermal current temperature makes the vertical temperature gradient in the room increase. The upper temperature of the room becomes higher, as does the height of the high temperature air level that lies in the upper part of the room. Finally, both the heat loss of the surrounding structure and the change in outdoor temperature have a large influence on indoor temperature. However, it does not influence the thermal stratification characteristics of DV. The only thing that has changed is the thermal stratification height.

Wu, X.; Gao, J.; Wu, W.

2006-01-01T23:59:59.000Z

177

HVAC and water heating system field test experiences at the Tennessee Energy Conservation in Housing (TECH) complex  

DOE Green Energy (OSTI)

The TECH complex has been utilized since 1976 as a field test site for several novel and conventional space conditioning and water heating systems. Systems tested include the Annual Cycle Energy System (ACES), solar space heating systems (hydronic and air), parallel and series solar assisted heat pumps, air-type solar heating with off-peak storage, passive solar heating, two conventional air-to-air heat pumps, an air-to-air heat pump with desuperheater water heater, and horizontal coil and multiple shallow vertical coil ground-coupled heat pumps. System descriptions and test results are presented as well as performance observations.

Baxter, V.D.; McGraw, B.A.

1984-01-01T23:59:59.000Z

178

HVAC Efficiency Controls Could Mean Significant Savings | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

HVAC Efficiency Controls Could Mean Significant Savings HVAC Efficiency Controls Could Mean Significant Savings HVAC Efficiency Controls Could Mean Significant Savings April 27, 2012 - 11:58am Addthis HVAC Efficiency Controls Could Mean Significant Savings April Saylor April Saylor Former Digital Outreach Strategist, Office of Public Affairs What does this mean for me? Commercial building owners could save an average 38% on their heating & cooling bills just by installing a few new controls onto their HVAC systems. According to a new report from Pacific Northwest National Lab, commercial building owners could save an average 38 percent on their heating and cooling bills just by installing a few new controls onto their HVAC systems. These findings mean significant potential savings for building owners who use commercial rooftop systems - but there's just one problem: the

179

Connexus Energy - Residential Efficient HVAC Rebate Program | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Connexus Energy - Residential Efficient HVAC Rebate Program Connexus Energy - Residential Efficient HVAC Rebate Program Connexus Energy - Residential Efficient HVAC Rebate Program < Back Eligibility Residential Savings Category Heating & Cooling Commercial Heating & Cooling Cooling Heat Pumps Program Info Expiration Date 12/31/2013 State Minnesota Program Type Utility Rebate Program Rebate Amount Air Source Heat Pumps: $480 - $630 Ductless Heat Pump: $150 Geothermal Heat Pump: $200/ton Provider Connexus Energy Connexus Energy offers rebates for residential customers to improve the energy efficiency of homes. Rebates are available for air source heat pumps, ductless heat pumps and ground-source heat pumps. Equipment must meet all efficiency standards listed on the web site, and must be installed by a certified HVAC contractor. Contact Connexus Energy for other program

180

Multiple sensors with single HVAC system control  

E-Print Network (OSTI)

sensor; HVAC; control system; optimization; multi channeloptimization method is designed to be independent of the HVAC

Lin, Craig; Federspiel, Clifford; Auslander, David

2002-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hvac heating ventilation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Thermal storage HVAC system retrofit provides economical air conditioning  

Science Conference Proceedings (OSTI)

This article describes an EMS-controlled HVAC system that meets the ventilation and cooling needs of an 18,000-seat indoor ice hockey arena. The Buffalo Memorial Auditorium (affectionately referred to as the Aud) was built in 1937 under the Works Project Administration of the federal government. Its original configuration included a 12,000-seat arena with an ice skating rink. By the late 1980s, the city was unsuccessfully attempting to attract events and tenants to the auditorium, which lacked air conditioning and other modern amenities. Thus, it was decided to renovate the facility to make it marketable. The first phase of the renovation included installing an air-conditioning system in the arena and repairing the existing building systems that were inoperable because of deferred maintenance. After considering the existing conditions (such as size of the space, intermittent usage, construction restrictions, operating budgets and the limited operations staff), the engineering team designed an innovative HVAC system. The system's features include: a carbon dioxide monitoring device that controls the intake of outside air; an ice storage system that provides chilled water and shifts electrical demand to off-peak hours; and a design that uses the building mass as a heat sink. A new energy management system (EMS) determines building cooling needs based on the type of event, ambient conditions and projected audience size. Then, it selects the most economical method to obtain the desired arena temperature.

Smith, S.F. (Wendel Engineers, P.C., Buffalo, NY (United States))

1993-03-01T23:59:59.000Z

182

Development of an Integrated Residential Heating, Ventilation, Cooling, and Dehumidification System for Residences  

Science Conference Proceedings (OSTI)

The Need and the Opportunity Codes such as ASHRAE 90.2 and IECC, and programs such as Energy Star and Builders Challenge, are causing new homes to be built to higher performance standards. As a result sensible cooling loads in new homes are going down, but indoor air quality prerogatives are causing ventilation rates and moisture loads to increase in humid climates. Conventional air conditioners are unable to provide the low sensible heat ratios that are needed to efficiently cool and dehumidify homes since dehumidification potential is strongly correlated with cooling system operating hours. The project team saw an opportunity to develop a system that is at least as effective as a conventional air conditioner plus dehumidifier, removes moisture without increasing the sensible load, reduces equipment cost by integrating components, and simplifies installation. Project Overview Prime contractor Davis Energy Group led a team in developing an Integrated Heating, Ventilation, Cooling, and Dehumidification (I-HVCD) system under the DOE SBIR program. Phase I and II SBIR project activities ran from July 2003 through December 2007. Tasks included: (1) Mechanical Design and Prototyping; (2) Controls Development; (3) Laboratory and Field Testing; and (4) Commercialization Activities Technology Description. Key components of the prototype I-HVCD system include an evaporator coil assembly, return and outdoor air damper, and controls. These are used in conjunction with conventional components that include a variable speed air handler or furnace, and a two-stage condensing unit. I-HVCD controls enable the system to operate in three distinct cooling modes to respond to indoor temperature and relative humidity (RH) levels. When sensible cooling loads are high, the system operates similar to a conventional system but varies supply airflow in response to indoor RH. In the second mode airflow is further reduced, and the reheat coil adds heat to the supply air. In the third mode, the reheat coil adds additional heat to maintain the supply air temperature close to the return air temperature (100% latent cooling). Project Outcomes Key Phase II objectives were to develop a pre-production version of the system and to demonstrate its performance in an actual house. The system was first tested in the laboratory and subsequently underwent field-testing at a new house in Gainesville, Florida. Field testing began in 2006 with monitoring of a 'conventional best practices' system that included a two stage air conditioner and Energy Star dehumidifier. In September 2007, the I-HVCD components were installed for testing. Both systems maintained uniform indoor temperatures, but indoor RH control was considerably better with the I-HVCD system. The daily variation from average indoor humidity conditions was less than 2% for the I-HVCD vs. 5-7% for the base case system. Data showed that the energy use of the two systems was comparable. Preliminary installed cost estimates suggest that production costs for the current I-HVCD integrated design would likely be lower than for competing systems that include a high efficiency air conditioner, dehumidifier, and fresh air ventilation system. Project Benefits This project verified that the I-HVCD refrigeration compacts are compact (for easy installation and retrofit) and can be installed with air conditioning equipment from a variety of manufacturers. Project results confirmed that the system can provide precise indoor temperature and RH control under a variety of climate conditions. The I-HVCD integrated approach offers numerous benefits including integrated control, easier installation, and reduced equipment maintenance needs. Work completed under this project represents a significant step towards product commercialization. Improved indoor RH control and fresh air ventilation are system attributes that will become increasingly important in the years ahead as building envelopes improve and sensible cooling loads continue to fall. Technologies like I-HVCD will be instrumental in meeting goals set by Building America

Hoeschele, M.A.; D.A. Springer

2008-06-18T23:59:59.000Z

183

Development of an Integrated Residential Heating, Ventilation, Cooling, and Dehumidification System for Residences  

SciTech Connect

The Need and the Opportunity Codes such as ASHRAE 90.2 and IECC, and programs such as Energy Star and Builders Challenge, are causing new homes to be built to higher performance standards. As a result sensible cooling loads in new homes are going down, but indoor air quality prerogatives are causing ventilation rates and moisture loads to increase in humid climates. Conventional air conditioners are unable to provide the low sensible heat ratios that are needed to efficiently cool and dehumidify homes since dehumidification potential is strongly correlated with cooling system operating hours. The project team saw an opportunity to develop a system that is at least as effective as a conventional air conditioner plus dehumidifier, removes moisture without increasing the sensible load, reduces equipment cost by integrating components, and simplifies installation. Project Overview Prime contractor Davis Energy Group led a team in developing an Integrated Heating, Ventilation, Cooling, and Dehumidification (I-HVCD) system under the DOE SBIR program. Phase I and II SBIR project activities ran from July 2003 through December 2007. Tasks included: (1) Mechanical Design and Prototyping; (2) Controls Development; (3) Laboratory and Field Testing; and (4) Commercialization Activities Technology Description. Key components of the prototype I-HVCD system include an evaporator coil assembly, return and outdoor air damper, and controls. These are used in conjunction with conventional components that include a variable speed air handler or furnace, and a two-stage condensing unit. I-HVCD controls enable the system to operate in three distinct cooling modes to respond to indoor temperature and relative humidity (RH) levels. When sensible cooling loads are high, the system operates similar to a conventional system but varies supply airflow in response to indoor RH. In the second mode airflow is further reduced, and the reheat coil adds heat to the supply air. In the third mode, the reheat coil adds additional heat to maintain the supply air temperature close to the return air temperature (100% latent cooling). Project Outcomes Key Phase II objectives were to develop a pre-production version of the system and to demonstrate its performance in an actual house. The system was first tested in the laboratory and subsequently underwent field-testing at a new house in Gainesville, Florida. Field testing began in 2006 with monitoring of a 'conventional best practices' system that included a two stage air conditioner and Energy Star dehumidifier. In September 2007, the I-HVCD components were installed for testing. Both systems maintained uniform indoor temperatures, but indoor RH control was considerably better with the I-HVCD system. The daily variation from average indoor humidity conditions was less than 2% for the I-HVCD vs. 5-7% for the base case system. Data showed that the energy use of the two systems was comparable. Preliminary installed cost estimates suggest that production costs for the current I-HVCD integrated design would likely be lower than for competing systems that include a high efficiency air conditioner, dehumidifier, and fresh air ventilation system. Project Benefits This project verified that the I-HVCD refrigeration compacts are compact (for easy installation and retrofit) and can be installed with air conditioning equipment from a variety of manufacturers. Project results confirmed that the system can provide precise indoor temperature and RH control under a variety of climate conditions. The I-HVCD integrated approach offers numerous benefits including integrated control, easier installation, and reduced equipment maintenance needs. Work completed under this project represents a significant step towards product commercialization. Improved indoor RH control and fresh air ventilation are system attributes that will become increasingly important in the years ahead as building envelopes improve and sensible cooling loads continue to fall. Technologies like I-HVCD will be instrumental in meeting goals set by Building America

Hoeschele, M.A.; D.A. Springer

2008-06-18T23:59:59.000Z

184

Development of New HVAC Design Tools: Search for the Holy Grail...  

NLE Websites -- All DOE Office Websites (Extended Search)

Development of New HVAC Design Tools: Search for the Holy Grail of Ventilation Research Speaker(s): Jelena Srebric Date: January 29, 2004 - 12:00pm Location: Bldg. 90 Seminar Host...

185

Genetic lateral and amplitude tuning with rule selection for fuzzy control of heating, ventilating and air conditioning systems  

Science Conference Proceedings (OSTI)

In this work, we propose the use of a new post-processing method for the lateral and amplitude tuning of membership functions combined with a rule selection to develop accurate fuzzy logic controllers dedicated to the control of heating, ventilating ...

R. Alcalá; J. Alcalá-Fdez; F. J. Berlanga; M. J. Gacto; F. Herrera

2006-06-01T23:59:59.000Z

186

Improving Ventilation and Saving Energy: Laboratory Study in a Modular  

NLE Websites -- All DOE Office Websites (Extended Search)

Improving Ventilation and Saving Energy: Laboratory Study in a Modular Improving Ventilation and Saving Energy: Laboratory Study in a Modular Classroom Test Bed Title Improving Ventilation and Saving Energy: Laboratory Study in a Modular Classroom Test Bed Publication Type Report Year of Publication 2005 Authors Apte, Michael G., Ian S. Buchanan, David Faulkner, William J. Fisk, Chi-Ming Lai, Michael Spears, and Douglas P. Sullivan Publisher Lawrence Berkeley National Laboratory Abstract The primary goals of this research effort were to develop, evaluate, and demonstrate a practical HVAC system for classrooms that consistently provides classrooms with the quantity of ventilation in current minimum standards, while saving energy, and reducing HVAC-related noise levels. This research was motivated by several factors, including the public benefits of energy efficiency, evidence that many classrooms are under-ventilated, and public concerns about indoor environmental quality in classrooms. This project involved the installation and verification of the performance of an Improved Heat Pump Air Conditioning (IHPAC) system, and its comparison, a standard HVAC system having an efficiency of 10 SEER. The project included the verification of the physical characteristics suitable for direct replacement of existing 10 SEER systems, quantitative demonstration of improved energy efficiency, reduced acoustic noise levels, quantitative demonstration of improved ventilation control, and verification that the system would meet temperature control demands necessary for the thermal comfort of the occupants. Results showed that the IHPAC met these goals. The IHPAC was found to be a direct bolt-on replacement for the 10 SEER system. Calculated energy efficiency improvements based on many days of classroom cooling or heating showed that the IHPAC system is about 44% more efficient during cooling and 38% more efficient during heating than the 10 SEER system. Noise reduction was dramatic, with measured A-weighed sound level for fan only operation conditions of 34.3 dB(A), a reduction of 19 dB(A) compared to the 10 SEER system. Similarly, the IHPAC stage-1 and stage-2 compressor plus fan sound levels were 40.8 dB(A) and 42.7 dB(A), reductions of 14 and 13 dB(A), respectively. Thus, the IHPAC is 20 to 35 times quieter than the 10 SEER systems depending upon the operation mode. The IHPAC system met the ventilation requirements and was able to provide consistent outside air supply throughout the study. Indoor CO2 levels with simulated occupancy were maintained below 1000 ppm. Finally temperature settings were met and controlled accurately. The goals of the laboratory testing phase were met and this system is ready for further study in a field test of occupied classrooms

187

The Histoty of Ventilation and Air Conditioning is CERN Up to Date with the latest Technological Developments?  

E-Print Network (OSTI)

The invention of ventilation cannot be ascribed to a certain date. It started with simple aeration when man brought fire into his abode and continued through different stages including air cooling using ice to finally arrive at the time when ventilation and air conditioning has become an essential part of our life and plays an important role in human evolution. This paper presents the history of ventilation and air conditioning, explains the key constraints over the centuries, and shows its influence on everyday life. Some examples of previous air-conditioning plants are described and different approaches to the way of calculation of ventilation systems discussed. It gives an overview of the Heating, Ventilation and Air Conditioning (HVAC) installations at CERN and points out their particularities. It also compares them with the latest technological developments in the field as well as showing the new trends that are being applied at CERN.

Kühnl-Kinel, J

2000-01-01T23:59:59.000Z

188

Columbia Water and Light - HVAC and Lighting Efficiency Rebates |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Columbia Water and Light - HVAC and Lighting Efficiency Rebates Columbia Water and Light - HVAC and Lighting Efficiency Rebates Columbia Water and Light - HVAC and Lighting Efficiency Rebates < Back Eligibility Commercial Industrial Savings Category Heating & Cooling Commercial Heating & Cooling Cooling Heat Pumps Appliances & Electronics Commercial Lighting Lighting Maximum Rebate Lighting: 50% of invoiced cost up to $22,500 Program Info State Missouri Program Type Utility Rebate Program Rebate Amount HVAC Replacements: $570 - $3,770 Lighting: $300/kW reduction or half of project cost Provider Columbia Water and Light Columbia Water and Light (CWL) offers rebates to its commercial and industrial customers for the purchase of high efficiency HVAC installations and efficient lighting. Incentives for certain measures are based upon the

189

Modelica Library for Building Heating, Ventilation and Air-Conditioning Systems  

DOE Green Energy (OSTI)

This paper presents a freely available Modelica library for building heating, ventilation and air conditioning systems. The library is based on the Modelica.Fluid library. It has been developed to support research and development of integrated building energy and control systems. The primary applications are controls design, energy analysis and model-based operation. The library contains dynamic and steady-state component models that are applicable for analyzing fast transients when designing control algorithms and for conducting annual simulations when assessing energy performance. For most models, dimensional analysis is used to compute the performance for operating points that differ from nominal conditions. This allows parameterizing models in the absence of detailed geometrical information which is often impractical to obtain during the conceptual design phase of building systems. In the first part of this paper, the library architecture and the main classes are described. In the second part, an example is presented in which we implemented a model of a hydronic heating system with thermostatic radiator valves and thermal energy storage.

Wetter, Michael

2009-06-17T23:59:59.000Z

190

BFRL: HVAC&R - Publications  

Science Conference Proceedings (OSTI)

HVAC&R Equipment Performance Group. Publications. Repeatability of Energy Consumption Test Results for Compact Refrigerators ...

191

CALIFORNIA ENERGY Large HVAC Building  

E-Print Network (OSTI)

CALIFORNIA ENERGY COMMISSION Large HVAC Building Survey Information Database of Buildings over 100 Design of Large Commercial HVAC Systems research project, one of six research elements in the Integrated Design of Large Commercial HVAC Systems Integrated Design of Small Commercial HVAC Systems Integrated

192

Indoor environmental quality and ventilation in U.S. office buildings: A view of current issues  

Science Conference Proceedings (OSTI)

Much of the current focus on indoor environmental quality and ventilation in US office buildings is a response to sick building syndrome and occupant complaints about building-related health symptoms, poor indoor air quality, and thermal discomfort. The authors know that serious ``sick-building`` problems occur in a significant number of US office buildings and that a significant proportion of the occupants in many normal (non-sick) buildings report building-related health symptoms. Concerns about the health effects of environmental tobacco smoke have also focused attention on the indoor environment. The major responses of industry and governments, underway at the present time, are to restrict smoking in offices, to attempt to reduce the emissions of indoor pollutants, and to improve the operation of heating, ventilating and air conditioning (HVAC) systems. Better air filtration, improved HVAC commissioning and maintenance, and increased provisions for individual control of HVAC are some of the improvements in HVAC that are currently being, evaluated. In the future, the potential for improved productivity and reduced airborne transmission of infectious disease may become the major driving force for improved indoor environments.

Fisk, W.J.

1994-11-01T23:59:59.000Z

193

HVAC Maintenance and Technologies | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

HVAC Maintenance and Technologies HVAC Maintenance and Technologies Presentation covers the HVAC maintenance and technologies, and is given at the Spring 2010 Federal Utility...

194

Wireless Demand Response Controls for HVAC Systems  

E-Print Network (OSTI)

Response Controls for HVAC Systems Clifford Federspiel,tests. Figure 5: Specific HVAC electric power consumptioncontrol, demand response, HVAC, wireless Executive Summary

Federspiel, Clifford

2010-01-01T23:59:59.000Z

195

MAPPING HVAC SYSTEMS FOR SIMULATION IN ENERGYPLUS  

E-Print Network (OSTI)

LBNL-XXXXX MAPPING HVAC SYSTEMS FOR SIMULATION IN ENERGYPLUSof California. MAPPING HVAC SYSTEMS FOR SIMULATION INpresent a conventional view of HVAC systems to the user, and

Basarkar, Mangesh

2013-01-01T23:59:59.000Z

196

Measuring Advances in HVAC Distribution System Design  

E-Print Network (OSTI)

Gabel and Andresen, HVAC Secondary Toolkil. Atlanta: ASHRAE,P_02 Measuring Advances in HVAC Distribution System Designdesign and operation of the HVAC thermal distribution system

Franconi, E.

2011-01-01T23:59:59.000Z

197

Energy Department Invests to Save on Heating, Cooling, and Lighting...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Research Center (750,000 DOE investment): This project will help demonstrate a rotating heat exchanger technology for residential HVAC systems. The heat pump will improve HVAC...

198

Energy Department Invests to Save on Heating, Cooling and Lighting...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Research Center (750,000 DOE investment): This project will help demonstrate a rotating heat exchanger technology for residential HVAC systems. The heat pump will improve HVAC...

199

Ventilation problems in heritage buildings  

Science Conference Proceedings (OSTI)

The control of indoor conditions in heritage buildings, such as castles or museums, is of paramount importance for the proper preservation of the artworks kept in. As heritage buildings are often not equipped with HVAC systems, it is necessary to provide ... Keywords: CO2 concentration, IAQ, heritage buildings, ventilation

S. Costanzo; A. Cusumano; C. Giaconia; S. Mazzacane

2007-05-01T23:59:59.000Z

200

HVAC Installed Performance  

Energy.gov (U.S. Department of Energy (DOE))

This presentation was given at the Summer 2012 DOE Building America meeting on July 25, 2012, and addressed the question HVAC proper installation energy savings: over-promising or under-delivering?"

Note: This page contains sample records for the topic "hvac heating ventilation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Outdoor Air, Heat Wheels and JCPenney: A New Approach to Retail Ventilation  

E-Print Network (OSTI)

JCPenney Construction Services department is responsible for the construction of new stores, takeover of existing facilities to create a new store, repairs to existing JCPenney facilities and the expansion and modernization of stores across the nation and the world. Each year, JCPenney Construction Services handles approximately 50 projects along these lines. After the implementation of ASHRAE 62- 1989 by JCPenney and many major building codes, including BOCA, mechanical engineers at JCPenney noticed a sharp increase in the percentage of cooling capacity required to cool the outdoor ventilation air. In an effort to limit this impact, both in first cost and in operational costs, JCPenney is beginning to make an effort to use enthalpy heat wheels in the hot and humid climate areas where it is economically feasible. This paper discusses the efforts of JCPenney to implement this option to the treatment of outdoor air in a store in Baton Rouge, LA while maintaining indoor air quality requirements as stated in ASHRAE Standard 62-1989 and maintaining energy efficiency. This paper also discusses the projected energy savings and operations of this alternative to the standard treatment of outdoor air.

Smith, C. S.; Bartlett, T. A.

1998-01-01T23:59:59.000Z

202

Large HVAC Codes and Standards Update 2000: American Society of Heating, Refrigerating and Air-Conditioning Engineers  

Science Conference Proceedings (OSTI)

This report documents EPRI activities in the year 2000 related to building codes and standards. The following activities are covered: attendance at the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) meetings and participation in technical committee and subcommittee meetings related to ASHRAE Standard 90.l; review of relevant U.S Department of Energy (DOE) appliance standards; review of developments of other building energy code organizations; and participation in the E...

2000-12-13T23:59:59.000Z

203

WASTE TREATMENT BUILDING VENTILATION SYSTEM DESCRIPTION DOCUMENT  

SciTech Connect

The Waste Treatment Building Ventilation System provides heating, ventilation, and air conditioning (HVAC) for the contaminated, potentially contaminated, and uncontaminated areas of the Monitored Geologic Repository's (MGR) Waste Treatment Building (WTB). In the uncontaminated areas, the non-confinement area ventilation system maintains the proper environmental conditions for equipment operation and personnel comfort. In the contaminated and potentially contaminated areas, in addition to maintaining the proper environmental conditions for personnel comfort and equipment operation, the contamination confinement area ventilation system directs potentially contaminated air away from personnel in the WTB and confines the contamination within high-efficiency particulate air (HEPA) filtration units. The contamination confinement area ventilation system creates airflow paths and pressure zones to minimize the potential for spreading contamination with the building. The contamination confinement ventilation system also protects the environment and the public by limiting airborne releases of radioactive or other hazardous contaminants from the WTB. The Waste Treatment Building Ventilation System confines the radioactive and hazardous material within the building such that the release rates comply with regulatory limits, The system design, operations, and maintenance activities incorporate ALARA (as low as is reasonably achievable) principles to maintain personnel radiation doses to all occupational workers below regulatory limits and as low as is reasonably achievable. The system provides status of important system parameters and equipment operation, and provides audible and/or visual indication of off-normal conditions and equipment failures. The Waste Treatment Building Ventilation System interfaces with the Waste Treatment Building System by being located in the WTB, and by maintaining specific pressure, temperature, and humidity environments within the building. The system also depends on the WTB for normal electric power supply and the required supply of water for heating, cooling, and humidification. Interface with the Waste Treatment Building System includes the WTB fire protection subsystem for detection of fire and smoke. The Waste Treatment Building Ventilation System interfaces with the Site Radiological Monitoring System for continuous monitoring of the exhaust air and key areas within the WTB, the Monitored Geologic Repository Operations Monitoring and Control System for monitoring and control of system operations, and the Site Generated Radiological Waste Handling System and Site Generated Hazardous, Non-Hazardous & Sanitary Waste Disposal System for routing of pretreated toxic, corrosive, and radiologically contaminated effluent from process equipment to the HEPA filter exhaust ductwork and air-cleaning unit.

P.A. Kumar

2000-06-22T23:59:59.000Z

204

Columbia Water and Light- Residential HVAC Rebate Program  

Energy.gov (U.S. Department of Energy (DOE))

Columbia Water and Light (CWL) provides an HVAC incentive for residential customers that are replacing an older heating and cooling system. Customers should submit the mechanical permit from a...

205

WASTE HANDLING BUILDING VENTILATION SYSTEM DESCRIPTION DOCUMENT  

SciTech Connect

The Waste Handling Building Ventilation System provides heating, ventilation, and air conditioning (HVAC) for the contaminated, potentially contaminated, and uncontaminated areas of the Monitored Geologic Repository's (MGR) Waste Handling Building (WHB). In the uncontaminated areas, the non-confinement area ventilation system maintains the proper environmental conditions for equipment operation and personnel comfort. In the contaminated and potentially contaminated areas, in addition to maintaining the proper environmental conditions for equipment operation and personnel comfort, the contamination confinement area ventilation system directs potentially contaminated air away from personnel in the WHB and confines the contamination within high-efficiency particulate air (HEPA) filtration units. The contamination confinement areas ventilation system creates airflow paths and pressure zones to minimize the potential for spreading contamination within the building. The contamination confinement ventilation system also protects the environment and the public by limiting airborne releases of radioactive or other hazardous contaminants from the WHB. The Waste Handling Building Ventilation System is designed to perform its safety functions under accident conditions and other Design Basis Events (DBEs) (such as earthquakes, tornadoes, fires, and loss of the primary electric power). Additional system design features (such as compartmentalization with independent subsystems) limit the potential for cross-contamination within the WHB. The system provides status of important system parameters and equipment operation, and provides audible and/or visual indication of off-normal conditions and equipment failures. The Waste Handling Building Ventilation System confines the radioactive and hazardous material within the building such that the release rates comply with regulatory limits. The system design, operations, and maintenance activities incorporate ALARA (as low as is reasonably achievable) principles to maintain personnel radiation doses to all occupational workers below regulatory limits and as low as is reasonably achievable. The Waste Handling Building Ventilation System interfaces with the Waste Handling Building System by being located within the WHB and by maintaining specific pressures, temperatures, and humidity within the building. The system also depends on the WHB for water supply. The system interfaces with the Site Radiological Monitoring System for continuous monitoring of the exhaust air; the Waste Handling Building Fire Protection System for detection of fire and smoke; the Waste Handling Building Electrical System for normal, emergency, and standby power; and the Monitored Geologic Repository Operations Monitoring and Control System for monitoring and control of the system.

P.A. Kumar

2000-06-21T23:59:59.000Z

206

BFRL: HVAC&R - Publications  

Science Conference Proceedings (OSTI)

HVAC&R Equipment Performance Group. Publications. Fundamental Aspects of the Application of Carbon Dioxide in Comfort Cooling. ...

207

HVAC | OpenEI  

Open Energy Info (EERE)

HVAC HVAC Dataset Summary Description The following data-set is for a benchmark residential home for all TMY3 locations across all utilities in the US. The data is indexed by utility service provider which is described by its "unique" EIA ID ( Source National Renewable Energy Laboratory Date Released April 05th, 2012 (2 years ago) Date Updated April 06th, 2012 (2 years ago) Keywords AC apartment CFL coffeemaker Computer cooling cost demand Dishwasher Dryer Furnace gas HVAC Incandescent Laptop load Microwave model NREL Residential television tmy3 URDB Data text/csv icon Residential Cost Data for Common Household Items (csv, 14.5 MiB) Quality Metrics Level of Review Some Review Comment Temporal and Spatial Coverage Frequency Annually Time Period License License Open Data Commons Public Domain Dedication and Licence (PDDL)

208

Application of Multizone HVAC Control Using Wireless Sensor Networks and Actuating Vent Registers  

E-Print Network (OSTI)

Most residential heating, ventilating, and air conditioning (HVAC) systems are designed to treat the home as a single zone. Single zone control consists of one thermostat, in a central area of the house that controls the HVAC operation. In a single zone system all of the vent registers are open, distributing air into all areas of the house at once. Single zone control leads to wasted energy for two reasons - all rooms being conditioned when they are not occupied, and conditioning occupied rooms, without maintaining them at the comfortable temperature for the occupants. Improved control of residential cooling and heating can be attained with a variable HVAC fan, duct, and vent system. Existing single zone systems are expensive to retrofit with the above mentioned features. Current techniques require replacing major components in the HVAC system which are both costly and time consuming, invading the user's home. An alternative to the extensive retrofit is detailed in this work. The experiments in this paper implement an automated vent louver system to solve two problems in heating homes: the problem of temperature stratification between floors and zonification between rooms, and the energy wasted to heat in unoccupied areas of the home. This paper considers the application of replacing the standard vents in each room with wireless controlled louvered vents. These vents allow for simpler, more cost effective retrofits which are also less invasive tithe end user's home. The experiments in this paper implement an automated vent louver system to reduce the energy wasted to heat unoccupied areas of the home. This test house in these experiments was a two story home. Wireless sensor-actuator networks were used to automate the test of closing off vent registers while maintaining the appropriate temperature set point in a control zone. A control zone consists of the house area where the vents are fully open. Controlling the vent registers allowed for reduced zonification between rooms on the same floor, and reduced stratification between the upstairs and downstairs. Energy savings were shown when vents were closed to heat the control zones containing the bedroom, of the office.

Watts, W.; Koplow, M.; Redfern, A.; Wright, P.

2007-01-01T23:59:59.000Z

209

Gas heat pumps are coming: But by a different name  

SciTech Connect

Gas heat pumps are coming, but by a different name. The manufacturers have elected not to call these products {open_quote}heat pumps{close_quotes} because advertising by gas distributors has been so effective at associating the term {open_quote}air-source heat pump{close_quotes} with cold blowing air. Nonetheless, gas-fired air-source heat pumps of the engine-driven and absorption types will be marketed starting in 1994 and in 1997, respectively, according to current plans. This paper identifies the generic participants that have been and will be involved in the gas heat pump deployment effort, and it reviews the underlying forces that caused (or likely will cause) those participants to act as they do. The participants include technology developers; the heating, ventilation, and air-conditioning (HVAC) industry; the utility industry; and state utility regulators. The driving forces include the drifting of unitary HVAC products toward a commodity-like status, the decline of the domestic component of global HVAC markets, the restructuring of the HVAC and gas utility industries, the anticipated restructuring of the electric utility industry, the strengths and weaknesses of gas distributors, and state utility regulation. Also reviewed are technology status, manufacturer commitments, and timetables for introducing products. The road to widespread domestic market acceptance of gas heat pumps will likely be very different from that experienced by electric heat pump manufacturers in the 1950s and 1960s.

Hughes, P.J.

1994-09-01T23:59:59.000Z

210

Dry Transfer Facility #1 - Ventilation Confinement Zoning Analysis  

Science Conference Proceedings (OSTI)

The purpose of this analysis is to establish the preliminary Ventilation Confinement Zone (VCZ) for the Dry Transfer Facility (DTF). The results of this document is used to determine the air quantities for each VCZ that will eventually be reflected in the development of the Ventilation Flow Diagrams. The calculations contained in this document were developed by D and E/Mechanical-HVAC and are intended solely for the use of the D and E/Mechanical-HVAC department in its work regarding the HVAC system for the Dry Transfer Facility. Yucca Mountain Project personnel from the D and E/Mechanical-HVAC department should be consulted before use of the calculation for purposes other than those stated herein or used by individuals other than authorized personnel in D and E/Mechanical-HVAC department.

K.D. Draper

2005-03-23T23:59:59.000Z

211

Development of New HVAC Design Tools: Search for the Holy Grail of  

NLE Websites -- All DOE Office Websites (Extended Search)

Development of New HVAC Design Tools: Search for the Holy Grail of Development of New HVAC Design Tools: Search for the Holy Grail of Ventilation Research Speaker(s): Jelena Srebric Date: January 29, 2004 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: William Fisk HVAC systems are very important to our wellbeing, energy, and the environment. Current design tools are typically supported by basic knowledge, and keep us at arm's length from the many practical problems. The design paradigm has been shifted several times in the past from thermal comfort, energy conservation, health concerns, and now probably to security issues. Each of the shift has required better design tools of HVAC systems.A team led by Dr. Jelena Srebric at the Department of Architecture, the Penn State University (PSU) is developing new HVAC design tools to meet

212

DEMONSTRATION OF A HYBRID INTELLIGENT CONTROL STRATEGY FOR CRITICAL BUILDING HVAC SYSTEMS  

SciTech Connect

Many industrial facilities utilize pressure control gradients to prevent migration of hazardous species from containment areas to occupied zones, often using Proportional-Integral-Derivative (PID) control. Within these facilities, PID control is often inadequate to maintain desired performance due to changing operating conditions. As the goal of the Heating, Ventilation and Air-Conditioning (HVAC) control system is to optimize the pressure gradients and associated flows for the plant, Linear Quadratic Tracking (LQT) provides a time-based approach to guiding plant interactions. However, LQT methods are susceptible to modeling and measurement errors, and therefore a hybrid design using the integration of soft control methods with hard control methods is developed and demonstrated to account for these errors and nonlinearities.

Craig Rieger; D. Subbaram Naidu

2010-06-01T23:59:59.000Z

213

Lighting/HVAC interactions and their effects on annual and peak HVAC requirements in commercial buildings  

SciTech Connect

Lighting measures is one effective strategy for reducing energy use in commercial buildings. Reductions in lighting energy have secondary effects on cooling/heating energy consumption and peak HVAC requirements; in general, they increase the heating and decrease cooling requirements of a building. Net change in a building`s annual and peak energy requirements, however, is difficult to quantify and depends on building characteristics, operating conditions, climate. This paper characterizes impacts of lighting/HVAC interactions on annual and peak heating/cooling requirements of prototypical US commercial buildings through computer simulations using DOE-2.1E building energy analysis program. Ten building types of two vintages and nine climates are chosen to represent the US commercial building stock. For each combination, a prototypical building is simulated with two lighting power densities, and resultant changes in heating and cooling loads are recorded. Simple concepts of Lighting Coincidence Factors are used to describe the observed interactions between lighting and HVAC requirements. (Coincidence Factor (CF) is ratio of changes in HVAC loads to those in lighting loads, where load is either annual or peak load). The paper presents tables of lighting CF for major building types and climates. These parameters can be used for regional or national cost/benefit analyses of lighting- related policies and utility DSM programs. Using Annual CFs and typical efficiencies for heating and cooling systems, net changes in space conditioning energy use from a lighting measure can be calculated. Similarly, Demand CFs can be used to estimate the changes in HVAC sizing, which can then be converted to changes in capital outlay using standard-design curves; or they can be used to estimate coincident peak reductions for the analysis of the utility`s avoided costs. Results from use of these tables are meaningful only when they involve a significantly large number of buildings.

Sezgen, A.O.; Huang, Y.J.

1994-08-01T23:59:59.000Z

214

Analysis of Innovative HVAC System Technologies and Their Application for Office Buildings in Hot and Humid Climates  

E-Print Network (OSTI)

ABSTRACT Analysis of Innovative HVAC System Technologies and Their Application for Office Buildings in Hot and Humid Climates. (December 2010) Oleksandr Tanskyi, B.S., National Technical University of Ukraine; M.S., National Technical University of Ukraine Co-Chairs of Advisory Committee: Dr. David E. Claridge Dr. Michael B. Pate The commercial buildings sector in the United States used 18% (17.93 Quads) of the U.S. primary energy in 2006. Office buildings are the largest single energy consumption category in the commercial buildings sector of the United States with annual energy consumption around 1.1 Quads. Traditional approaches used in commercial building designs are not adequate to save energy in both depth and scale. One of the most effective ways to reduce energy consumption is to improve energy performance of HVAC systems. High-performance HVAC systems and components, as well as application of renewable energy sources, were surveyed for buildings in hot and humid climates. An analysis of performance and energy saving potential estimation for selected HVAC systems in hot and humid climates was developed based on energy consumption simulation models in DOE-2.1E. A calibrated energy consumption model of an existing office building located in the hot and humid climate conditions of Texas was developed. Based on this model, the energy saving potential of the building was estimated. In addition, energy consumption simulation models were developed for a new office building, including simulation of energy saving measures that could be achieved with further improvements of HVAC system above the energy conservation codes requirements. The theoretical minimum energy consumption level for the same office building was estimated for the purpose of evaluating the whole building energy efficiency level. The theoretical minimum energy consumption model of the office building was designed to provide the same level of comfort and services to the building occupants as provided in the actual building simulation model. Finally, the energy efficiency of the building that satisfies valid energy conservation codes and the building with an improved HVAC system was estimated based on theoretically minimum energy consumption level. The analysis provided herein can be used for new building practitioners and existing building owners to evaluate energy reduction potential and the performance of innovative technologies such as dedicated outdoor air system, displacement ventilation, improved cooling system efficiency, air source heat pumps and natural gas heat pumps.

Tanskyi, Oleksandr

2010-12-01T23:59:59.000Z

215

Project title: Natural ventilation, solar heating and integrated low-energy building design  

E-Print Network (OSTI)

of integrated low-energy building design. In Cambridge, research was conducted at the BP Institute - which was set up in 1999 with an endowment from BP to research some of the fundamental scientific challenges that the oil industry encounters. In the CMI... in building design. Summary of Intended Outcomes: The objectives of the project will be to develop designs and technologies to: reduce energy costs of maintaining a comfortable environment with buildings through use of solar power, natural ventilation...

2009-07-10T23:59:59.000Z

216

A Quasi-Dynamic HVAC and Building Simulation Methodology  

E-Print Network (OSTI)

This thesis introduces a quasi-dynamic building simulation methodology which complements existing building simulators by allowing transient models of HVAC (heating, ventilating and air-conditioning) systems to be created in an analogous way to their design and simulated in a computationally efficient manner. The methodology represents a system as interconnected, object-oriented sub-models known as components. Fluids and their local properties are modeled using discrete, incompressible objects known as packets. System wide pressure and flow rates are modeled similar to electrical circuit models. Transferring packets between components emulates fluid flow, while the system wide fluid circuit formed by the components' interconnections determines system wide pressures and flow rates. A tool named PAQS, after the PAacketized Quasi-dynamic Simulation methodology, was built to demonstrate the described methodology. Validation tests of PAQS found that its steady state energy use predictions differed less than 3% from a comparable steady state model. PAQS was also able to correctly model the transient behavior of a dynamic linear analytical system.

Davis, Clinton Paul

2012-05-01T23:59:59.000Z

217

CALIFORNIA ENERGY Large HVAC Energy Impact Report  

E-Print Network (OSTI)

CALIFORNIA ENERGY COMMISSION Large HVAC Energy Impact Report Statewide Energy Impact Report are part of the Integrated Design of Large Commercial HVAC Systems research project. The reports: Productivity and Interior Environments Integrated Design of Large Commercial HVAC Systems Integrated Design

218

Development of HVAC System Performance Criteria Using Factorial Design and DOE-2 Simulation  

E-Print Network (OSTI)

A new approach is described for the development of Heating, Ventilating, and Air-conditioning (HVAC) System Performance Criteria for the Texas Building Energy Design Standard. This approach integrates a design of experimental methodology and DOE-2 simulation to identify the effects of control parameters on HVAC system energy performance. Three new criteria - transport, plant, and system performance factors-are used as measures of system performance. The procedure has been applied to the development of criteria for a variable-air-volume (VAV) and a constant-air-volume (CAV) system in three Texas climates. The results show that the air distribution system pressure loss, cooling coil exit temperature set-pint, operation of an economizer, and use of dead band controls have significant effects on air transport energy use and total system performance. The selection of control strategies and set-points have a clear impact on energy use. There is also a great energy-saving potential of converting from a CAV to a VAV system.

Hou, D.; Jones, J. W.; Hunn, B. D.; Banks, J. A.

1996-01-01T23:59:59.000Z

219

Air Distribution Effectiveness for Residential Mechanical Ventilation: Simulation and Comparison of Normalized Exposures  

SciTech Connect

The purpose of ventilation is to dilute indoor contaminants that an occupant is exposed to. Even when providing the same nominal rate of outdoor air, different ventilation systems may distribute air in different ways, affecting occupants' exposure to household contaminants. Exposure ultimately depends on the home being considered, on source disposition and strength, on occupants' behavior, on the ventilation strategy, and on operation of forced air heating and cooling systems. In any multi-zone environment dilution rates and source strengths may be different in every zone and change in time, resulting in exposure being tied to occupancy patterns.This paper will report on simulations that compare ventilation systems by assessing their impact on exposure by examining common house geometries, contaminant generation profiles, and occupancy scenarios. These simulations take into account the unsteady, occupancy-tied aspect of ventilation such as bathroom and kitchen exhaust fans. As most US homes have central HVAC systems, the simulation results will be used to make appropriate recommendations and adjustments for distribution and mixing to residential ventilation standards such as ASHRAE Standard 62.2.This paper will report on work being done to model multizone airflow systems that are unsteady and elaborate the concept of distribution matrix. It will examine several metrics for evaluating the effect of air distribution on exposure to pollutants, based on previous work by Sherman et al. (2006).

Petithuguenin, T.D.P.; Sherman, M.H.

2009-05-01T23:59:59.000Z

220

Energy Crossroads: Ventilation, Infiltration & Indoor Air Quality |  

NLE Websites -- All DOE Office Websites (Extended Search)

Ventilation, Infiltration & Indoor Air Quality Ventilation, Infiltration & Indoor Air Quality Suggest a Listing Air Infiltration and Ventilation Centre (AIVC) The AIVC fulfills its objectives by providing a range of services and facilities which include: Information, Technical Analysis, Technical Interchange, and Coordination. American Conference of Governmental Industrial Hygienists (ACGIH) The ACGIH offers high quality technical publications and learning opportunities. Americlean Services Corp. (ASC) ASC is a certified SBA 8(a) engineering/consulting firm specializing in HVAC contamination detection, abatement, and monitoring. In addition to highly professional ductwork cleaning and HVAC cleaning services, ASC offers a wide range of other engineering/ consulting/ management services

Note: This page contains sample records for the topic "hvac heating ventilation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Energy Performance Comparison of Heating and Air Conditioning Systems for Multi-Family Residential Buildings  

SciTech Connect

The type of heating, ventilation and air conditioning (HVAC) system has a large impact on the heating and cooling energy consumption in multifamily residential buildings. This paper compares the energy performance of three HVAC systems: a direct expansion (DX) split system, a split air source heat pump (ASHP) system, and a closed-loop water source heat pump (WSHP) system with a boiler and an evaporative fluid cooler as the central heating and cooling source. All three systems use gas furnace for heating or heating backup. The comparison is made in a number of scenarios including different climate conditions, system operation schemes and applicable building codes. It is found that with the minimum code-compliant equipment efficiency, ASHP performs the best among all scenarios except in extremely code climates. WSHP tends to perform better than the split DX system in cold climates but worse in hot climates.

Wang, Weimin; Zhang, Jian; Jiang, Wei; Liu, Bing

2011-07-31T23:59:59.000Z

222

Optimization of the Fin Heat Pipe for Ventilating and Air Conditioning with a Genetic Algorithm  

E-Print Network (OSTI)

This paper illustrates that use of a heat pipe as a heat-reclaiming device can significantly influence the air-conditioning system. It analyzes the heat transfer model of the uniform annular fin heat pipe under the condition of air conditioning. It establishes functions of the fin structure parameters such as height,spacing and thickness of the fin when the volume of fin is the smallest under unit temperature difference and unit quantity of heat. It uses a genetic algorithm to optimize the model of the uniform annular fin heat pipe. The calculation result shows that the method of genetic algorithm is effective.

Qian, J.; Sun, D.; Li, G.

2006-01-01T23:59:59.000Z

223

Continuous Energy Management of the HVAC&R System in an Office Building System Operation and Energy Consumption for the Eight Years after Building Completion  

E-Print Network (OSTI)

The authors continuously studied the energy consumption of a heating, ventilating, air- conditioning and refrigerating (HVAC&R) system in an office for the operation of the system in terms of its expected performance. A fault in the system control setting was detected, and the system performance improved significantly as a result of correcting the fault. Recently, however, problematic issues, such as the malfunction of chillers and deteriorated performance of the heat exchangers, have emerged, resulting in the degradation of overall system performance. This paper describes (a) changes in the energy consumption of the building over a period of eight years during which the HVAC&R system was operated, and (b) problematic issues that arose during system operation in order to identify the energy-saving effects of the system found when energy management of the building is continuously practiced. In this HVAC&R system, about 25% of electric power consumption for wintertime could be saved by checking the system operation during the first two years. After that, the electric power consumption gradually increased due to the system deterioration until 2004, but it decreased again by properly dealing with the problems.

Akashi, Y.; Shinozaki, M.; Kusuda, R.; Ito, S.

2006-01-01T23:59:59.000Z

224

Transpired Solar Collector at NREL's Waste Handling Facility Uses Solar Energy to Heat Ventilation Air (Fact Sheet) (Revised), Federal Energy Management Program (FEMP)  

NLE Websites -- All DOE Office Websites (Extended Search)

Highlights Highlights System Size 300 ft 2 transpired solar collector Energy Production About 125 Btu/hr/ft 2 (400 W/m 2 ) of heat delivery under ideal conditions (full sun) Installation Date 1990 Motivation Provide solar-heated ventilation air to offset some of the heating with conventional electric resistance heaters Annual Savings 14,310 kWh (49 million Btu/yr) or about 26% of the energy required to heat the facility's ventilation air System Details Components Black, 300 ft 2 corrugated aluminum transpired solar collector with a porosity of 2%; bypass damper; two-speed 3000 CFM vane axial supply fan; electric duct heater; thermostat controller Storage None Loads 188 million Btu/year (55,038 kWh/year) winter average to heat 1,300 ft 2 Waste Handling Facility

225

Transpired Solar Collector at NREL's Waste Handling Facility Uses Solar Energy to Heat Ventilation Air (Fact Sheet) (Revised), Federal Energy Management Program (FEMP)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Highlights Highlights System Size 300 ft 2 transpired solar collector Energy Production About 125 Btu/hr/ft 2 (400 W/m 2 ) of heat delivery under ideal conditions (full sun) Installation Date 1990 Motivation Provide solar-heated ventilation air to offset some of the heating with conventional electric resistance heaters Annual Savings 14,310 kWh (49 million Btu/yr) or about 26% of the energy required to heat the facility's ventilation air System Details Components Black, 300 ft 2 corrugated aluminum transpired solar collector with a porosity of 2%; bypass damper; two-speed 3000 CFM vane axial supply fan; electric duct heater; thermostat controller Storage None Loads 188 million Btu/year (55,038 kWh/year) winter average to heat 1,300 ft 2 Waste Handling Facility

226

Building Technologies Office: Transitioning Traditional HVAC...  

NLE Websites -- All DOE Office Websites (Extended Search)

Traditional HVAC Contractors to Whole House Performance Expert Meeting Building America hosted the "Transitioning Traditional HVAC Contractors to Whole House Performance...

227

Building Technologies Office: Transitioning Traditional HVAC...  

NLE Websites -- All DOE Office Websites (Extended Search)

Transitioning Traditional HVAC Contractors to Whole House Performance Expert Meeting to someone by E-mail Share Building Technologies Office: Transitioning Traditional HVAC...

228

Measuring Outdoor Airflow into HVAC Systems  

E-Print Network (OSTI)

MEASURING OUTDOOR AIRFLOW INTO HVAC SYSTEMS W i l l i a m J.minimum OA flow rate if HVAC system has an economizer

Fisk, William J.; Faulkner, David; Sullivan, Douglas P.

2005-01-01T23:59:59.000Z

229

Building Energy Software Tools Directory: HVAC Solution  

NLE Websites -- All DOE Office Websites (Extended Search)

design and specify HVAC equipment. Pick familiar objects like boilers, pumps, fan coils and air handlers and using drag and drop methods, connect them to form a HVAC...

230

Buildings Energy Data Book: 5.3 Heating, Cooling, and Ventilation Equipment  

Buildings Energy Data Book (EERE)

2 2 Main Commercial Heating and Cooling Equipment as of 1995, 1999, and 2003 (Percent of Total Floorspace) (1) Heating Equipment 1995 1999 2003 (2) Cooling Equipment 1995 1999 2003 (2) Packaged Heating Units 29% 38% 28% Packaged Air Conditioning Units 45% 54% 46% Boilers 29% 29% 32% Individual Air Conditioners 21% 21% 19% Individual Space Heaters 29% 26% 19% Central Chillers 19% 19% 18% Furnaces 25% 21% 30% Residential Central Air Conditioners 16% 12% 17% Heat Pumps 10% 13% 14% Heat Pumps 12% 14% 14% District Heat 10% 8% 8% District Chilled Water 4% 4% 4% Other 11% 6% 5% Swamp Coolers 4% 3% 2% Other 2% 2% 2% Note(s): Source(s): 1) Heating and cooling equipment percentages of floorspace total more than 100% since equipment shares floorspace. 2) Malls are no longer included in most CBECs tables; therefore, some data is not directly comparable to past CBECs.

231

e3_Coyote Case Study2000/L&J  

Science Conference Proceedings (OSTI)

... graphic design technology; biotechnology; heat- ing, ventilating ... the local school districts and work ... HVAC Heating, Ventilating, and Air Conditioning ...

2013-06-04T23:59:59.000Z

232

Buildings Energy Data Book: 5.3 Heating, Cooling, and Ventilation Equipment  

Buildings Energy Data Book (EERE)

3 3 Residential Boiler Efficiencies (1) Gas-Fired Boilers Oil-Fired Boilers Average shipped in 1985 (2): 74% AFUE Average shipped in 1985 (2): 79% AFUE Best Available in 1981: 81% AFUE Best Available in 1981: 86% AFUE Best Available in 2007: 96% AFUE Best Available in 2007: 89% AFUE Note(s): Source(s): 1) Federal appliance standards effective Jan. 1, 1992, require a minimum of 80% AFUE (except gas-fired steam boiler, which must have a 75% AFUE or higher). 2) Includes furnaces. GAMA, Consumer's Directory of Certified Efficiency Ratings for Residential Heating and Water Heating Equipment, Aug. 2005, p. 88 and 106 for best- available AFUE; and GAMA for 1985 average AFUEs; GAMA Tax Credit Eligible Equipment: Gas- and Oil-Fired Boilers 95% AFUE or Greater, May 2007; and GAMA Consumer's Directory of Certified Efficiency Ratings for Heating and Water Heating Equipment, May 2007

233

Buildings Energy Data Book: 5.3 Heating, Cooling, and Ventilation...  

Buildings Energy Data Book (EERE)

Standard (Trane) 14% York 12% Nordyne 12% Rheem 9% Lennox 9% Others 3% Total 100% Note(s): Source(s): 5,833,354 1) Does not include water-source or ground-source heat pumps....

234

Multifamily Individual Heating and Ventilation Systems, Lawrence, Massachusetts (Fact Sheet), Building America Case Study: Efficient Solutions for New and Existing Homes, Building Technologies Office (BTO)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Multifamily Individual Heating Multifamily Individual Heating and Ventilation Systems Lawrence, Massachusetts PROJECT INFORMATION Construction: Retrofit Type: Multifamily, affordable Builder: Merrimack Valley Habitat for Humanity (MVHfH) www.merrimackvalleyhabitat.org Size: 840 to 1,170 ft 2 units Price Range: $125,000-$130,000 Date completed: Slated for 2014 Climate Zone: Cold (5A) PERFORMANCE DATA HERS Index Range: 48 to 63 Projected annual energy cost savings: $1,797 Incremental cost of energy efficiency measures: $3,747 Incremental annual mortgage: $346 Annual cash flow: $1,451 Billing data: Not available The conversion of an older Massachusetts building into condominiums illustrates a safe, durable, and cost-effective solution for heating and ventilation systems that can potentially benefit millions of multifamily buildings. Merrimack Valley

235

Porous insulation in HVAC systems  

Science Conference Proceedings (OSTI)

Porous insulation used to line the air stream surfaces of HVAC equipment provides a locus for the accumulation of dirt and debris. Dirt and debris are hydrophilic and the insulation on the air stream surfaces of mechanical cooling systems thus provides a niche for mold growth. The mold growing on porous insulation unlike moldy debris on a hard surface such as sheetmetal cannot be removed by duct cleaning. Actions for proactively preventing biocontamination of HVAC insulation include the following. (1) Porous insulation shall not be used to line the air stream surfaces of HVAC plenums where wetting is likely such as in the vicinity of cooling coils

Philip R. Morey

1995-01-01T23:59:59.000Z

236

Inverted Attic Bulkhead for HVAC Ductwork | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Inverted Attic Bulkhead for HVAC Ductwork Inverted Attic Bulkhead for HVAC Ductwork Inverted Attic Bulkhead for HVAC Ductwork, Roseville, California (Fact Sheet), Building America...

237

HVAC component data modeling using industry foundation classes  

E-Print Network (OSTI)

HVAC Component Data Modeling Using Industry Foundationof a major extension of the HVAC part of the IFC data model.generic approach for handling HVAC components. This includes

Bazjanac, Vladimir; Forester, James; Haves, Philip; Sucic, Darko; Xu, Peng

2002-01-01T23:59:59.000Z

238

Co-simulation of innovative integrated HVAC systems in buildings  

E-Print Network (OSTI)

Integrated Simulation for HVAC Per- formance Prediction:air-conditioning equipment models (HVAC BESTEST), volume 1:air-conditioning equipment models (HVAC BESTEST), volume 2:

Trcka, Marija

2010-01-01T23:59:59.000Z

239

Modeling and Measurement Constraints in Fault Diagnostics for HVAC Systems  

E-Print Network (OSTI)

in Fault Diagnostics for HVAC Systems Massieh Najafi 1 ,tools for determining HVAC diagnostics, methods todetect faults in HVAC systems are still generally

Najafi, Massieh

2010-01-01T23:59:59.000Z

240

Fault Detection and Diagnosis in Building HVAC Systems  

E-Print Network (OSTI)

Wright, “Condition monitoring in HVAC subsystems using firstmonitoring packaged HVAC equipment. ASHRAE Transactions”,Detection and Diagnosis of HVAC Systems Using Support Vector

Najafi, Massieh

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hvac heating ventilation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Buildings Energy Data Book: 5.3 Heating, Cooling, and Ventilation Equipment  

Buildings Energy Data Book (EERE)

U.S. Heating and Air-Conditioning System Manufacturer Shipments, by Type (Including Exports) 2005 Value of 2000 2005 2007 2009 2010 Shipments Equipment Type (1,000s) (1,000s) (1,000s) (1,000s) (1,000s) ($million) (7) Air-Conditioners (1) 5,346 6,472 4,508 3,516 3419 5,837 Heat Pumps 1,539 2,336 1,899 1,642 1,748 2,226 Air-to-Air Heat Pumps 1,339 2,114 1,899 1,642 1748 1,869 Water-Source Heat Pumps (2) 200 222 N.A. N.A. N.A. 357 Chillers 38 37 37 25 29 1,093 Reciprocating 25 24 30 20 24 462 Centrifugal/Screw 8 6 7 5 5 566 Absorption (3) 5 7 N.A. N.A. N.A. 64 Furnaces 3,681 3,624 2,866 2,231 2,509 2,144 Gas-Fired (4) 3,104 3,512 2,782 2,175 2453 2,081 Electric 455 N.A. N.A. N.A. N.A. N.A. Oil-Fired (5) 121 111 84 56 56 63 Boilers (6) 368 370 N.A. N.A. N.A. N.A. Note(s): Source(s): 1) Includes exports and gas air conditioners (gas units <10,000 units/yr) and rooftop equipment. Excludes heat pumps, packaged terminal air

242

HOW THE LEED VENTILATION CREDIT IMPACTS ENERGY CONSUMPTION OF GSHP SYSTEMS A CASE STUDY FOR PRIMARY SCHOOLS  

Science Conference Proceedings (OSTI)

This paper presents a study on the impacts of increased outdoor air (OA) ventilation on the performance of ground-source heat pump (GSHP) systems that heat and cool typical primary schools. Four locations Phoenix, Miami, Seattle, and Chicago are selected in this study to represent different climate zones in the United States. eQUEST, an integrated building and HVAC system energy analysis program, is used to simulate a typical primary school and the GSHP system at the four locations with minimum and 30% more than minimum OA ventilation. The simulation results show that, without an energy recovery ventilator, the 30% more OA ventilation results in an 8.0 13.3% increase in total GSHP system energy consumption at the four locations. The peak heating and cooling loads increase by 20.2 30% and 14.9 18.4%, respectively, at the four locations. The load imbalance of the ground heat exchanger is increased in hot climates but reduced in mild and cold climates.

Liu, Xiaobing [ORNL

2011-01-01T23:59:59.000Z

243

Buildings Energy Data Book: 5.3 Heating, Cooling, and Ventilation Equipment  

Buildings Energy Data Book (EERE)

5 5 Commercial Equipment Efficiencies Equipment Type Chiller Screw COP(full-load / IPLV) 2.80 / 3.05 2.80 / 3.05 3.02 / 4.45 Scroll COP 2.80 / 3.06 2.96 / 4.40 N.A. Reciprocating COP(full-load / IPLV) 2.80 / 3.05 2.80 / 3.05 3.52 / 4.40 Centrifugal COP(full-load / IPLV) 5.0 / 5.2 6.1 / 6.4 7.3 / 9.0 Gas-Fired Absorption COP 1.0 1.1 N.A. Gas-Fired Engine Driven COP 1.5 1.8 N.A. Rooftop A/C EER 10.1 11.2 13.9 Rooftop Heat Pump EER (cooling) 9.8 11.0 12.0 COP (heating) 3.2 3.3 3.4 Boilers Gas-Fired Combustion Efficiency 77 80 98 Oil-Fired Thermal Efficiency 80 84 98 Electric Thermal Efficiency 98 98 98 Furnace AFUE 77 80 82 Water Heater Gas-Fired Thermal Efficiency 78 80 96 Oil-Fired Thermal Efficiency 79 80 85 Electric Resistance Thermal Efficiency 98 98 98 Gas-Fired Instantaneous Thermal Efficiency 77 84 89 Source(s): Parameter Efficiency

244

Buildings Energy Data Book: 5.3 Heating, Cooling, and Ventilation Equipment  

Buildings Energy Data Book (EERE)

1 1 Main Residential Heating Equipment as of 1987, 1993, 1997, 2001, and 2005 (Percent of Total Households) Equipment Type 1987 1993 1997 2001 2005 Natural Gas 55% 53% 53% 55% 52% Central Warm-Air Furnace 35% 36% 38% 42% 40% Steam or Hot-Water System 10% 9% 7% 7% 7% Floor/Wall/Pipeless Furnace 6% 4% 4% 3% 2% Room Heater/Other 4% 3% 4% 3% 3% Electricity 20% 26% 29% 29% 30% Central Warm-Air Furnace 8% 10% 11% 12% 14% Heat Pump 5% 8% 10% 10% 8% Built-In Electric Units 6% 7% 7% 6% 5% Other 1% 1% 2% 2% 1% Fuel Oil 12% 11% 9% 7% 7% Steam or Hot-Water System 7% 6% 5% 4% 4% Central Warm-Air Furnace 4% 5% 4% 3% 3% Other 1% 0% 0% 0% 0% Other 13% 11% 9% 8% 10% Total 100% 100% 100% 100% 100% Note(s): Source(s): Other equipment includes wood, LPG, kerosene, other fuels, and none. EIA, A Look at Residential Consumption in 2005, June 2008, Table HC2-4; EIA, A Look at Residential Energy Consumption in 2001, Apr. 2004, 'Table HC3-

245

Building Energy Software Tools Directory : HVAC Residential Load...  

NLE Websites -- All DOE Office Websites (Extended Search)

HVAC Residential Load Calcs HD for the iPad Back to Tool HVAC Residential Load Calcs HD screenshot HVAC Residential Load Calcs HD screenshot HVAC Residential Load Calcs HD...

246

Ventilative cooling  

E-Print Network (OSTI)

This thesis evaluates the performance of daytime and nighttime passive ventilation cooling strategies for Beijing, Shanghai and Tokyo. A new simulation method for cross-ventilated wind driven airflow is presented . This ...

Graça, Guilherme Carrilho da, 1972-

1999-01-01T23:59:59.000Z

247

Ventilation Systems  

Energy.gov (U.S. Department of Energy (DOE))

Ventilation is the process of moving air into and out of an interior space by natural or mechanical means. Ventilation is necessary for the health and comfort of occupants of all buildings....

248

HVAC system analysis: energy audit review  

SciTech Connect

Although most energy audits do not investigate HVAC systems in as much detail as would most design consultants, audit data can be most informative. For certain types of buildings, air-conditioning energy usage can be estimated by its absence from energy bills during winter months, and heating energy usage can be estimated by its absence from energy bills during the summer months. Cooling and heating energy usage can be even more accurately broken down when a fossil fuel is used for heating while electrical energy is used for cooling. It is easy to establish fairly accurate energy consumption estimates for lighting, fan motors, and pumps; this can be done by verifying their loads and multiplying them by known operating hours. The numerous notes contained in some energy audits may also provide ideas for retrofitting energy-consuming areas.

Harmon, K.S.

1983-01-01T23:59:59.000Z

249

Meeting Residential Ventilation Standards Through Dynamic Control of Ventilation Systems  

SciTech Connect

Existing ventilation standards, including American Society of Heating, Refrigerating, and Air-conditioning Engineers (ASHRAE) Standard 62.2, specify continuous operation of a defined mechanical ventilation system to provide minimum ventilation, with time-based intermittent operation as an option. This requirement ignores several factors and concerns including: other equipment such as household exhaust fans that might incidentally provide ventilation, negative impacts of ventilation when outdoor pollutant levels are high, the importance of minimizing energy use particularly during times of peak electricity demand, and how the energy used to condition air as part of ventilation system operation changes with outdoor conditions. Dynamic control of ventilation systems can provide ventilation equivalent to or better than what is required by standards while minimizing energy costs and can also add value by shifting load during peak times and reducing intake of outdoor air contaminants. This article describes the logic that enables dynamic control of whole-house ventilation systems to meet the intent of ventilation standards and demonstrates the dynamic ventilation system control concept through simulations and field tests of the Residential Integrated Ventilation-Energy Controller (RIVEC).

Sherman, Max H.; Walker, Iain S.

2011-04-01T23:59:59.000Z

250

Ameren Illinois (Electric) - Custom, HVAC, and Motor Business...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Custom, HVAC, and Motor Business Efficiency Incentives Ameren Illinois (Electric) - Custom, HVAC, and Motor Business Efficiency Incentives Eligibility Commercial Industrial...

251

Improving Ventilation and Saving Energy: Laboratory Study in aModular Classroom Test Bed  

SciTech Connect

The primary goals of this research effort were to develop, evaluate, and demonstrate a practical HVAC system for classrooms that consistently provides classrooms with the quantity of ventilation in current minimum standards, while saving energy, and reducing HVAC-related noise levels. This research was motivated by several factors, including the public benefits of energy efficiency, evidence that many classrooms are under-ventilated, and public concerns about indoor environmental quality in classrooms. This project involved the installation and verification of the performance of an Improved Heat Pump Air Conditioning (IHPAC) system, and its comparison, a standard HVAC system having an efficiency of 10 SEER. The project included the verification of the physical characteristics suitable for direct replacement of existing 10 SEER systems, quantitative demonstration of improved energy efficiency, reduced acoustic noise levels, quantitative demonstration of improved ventilation control, and verification that the system would meet temperature control demands necessary for the thermal comfort of the occupants. Results showed that the IHPAC met these goals. The IHPAC was found to be a direct bolt-on replacement for the 10 SEER system. Calculated energy efficiency improvements based on many days of classroom cooling or heating showed that the IHPAC system is about 44% more efficient during cooling and 38% more efficient during heating than the 10 SEER system. Noise reduction was dramatic, with measured A-weighed sound level for fan only operation conditions of 34.3 dB(A), a reduction of 19 dB(A) compared to the 10 SEER system. Similarly, the IHPAC stage-1 and stage-2 compressor plus fan sound levels were 40.8 dB(A) and 42.7 dB(A), reductions of 14 and 13 dB(A), respectively. Thus, the IHPAC is 20 to 35 times quieter than the 10 SEER systems depending upon the operation mode. The IHPAC system met the ventilation requirements and was able to provide consistent outside air supply throughout the study. Indoor CO2 levels with simulated occupancy were maintained below 1000 ppm. Finally temperature settings were met and controlled accurately. The goals of the laboratory testing phase were met and this system is ready for further study in a field test of occupied classrooms.

Apte, Michael G.; Buchanan, Ian S.; Faulkner, David; Fisk,William J.; Lai, Chi-Ming; Spears, Michael; Sullivan, Douglas P.

2005-08-01T23:59:59.000Z

252

Building HVAC Requirements Overview Page 4-1 4 Building HVAC Requirements  

E-Print Network (OSTI)

Building HVAC Requirements ­ Overview Page 4-1 4 Building HVAC Requirements 4.1 Overview 4 conditioning (HVAC) systems. The requirements are presented in this chapter so that it may serve as a single. 2008 Residential Compliance Manual August 2009 #12;Page 4-2 Building HVAC Requirements ­ Overview 4

253

Solar heating and cooling commercialization research program. Final report  

DOE Green Energy (OSTI)

The Solar Heating and Cooling Commercialization Research Program has addressed a recognized need to accelerate the commercialization of solar products. The development of communication techniques and materials for a target group of heating, ventilating and air-conditioning (HVAC) wholesalers and distributors has been the primary effort. A summary of the program, the approach to the development of the techniques and materials, the conclusions derived from seminar feedback, the development of additional research activities and reports and the recommendations for follow-on activities are presented. The appendices offer detailed information on specific elements of the research effort.

Christensen, D.L.; Tragert, W.; Weir, S.

1979-11-01T23:59:59.000Z

254

Available Technologies: TRAMS: A New Tracer Gas Airflow ...  

APPLICATIONS OF TECHNOLOGY: Balancing of airflows in heating, ventilation, air conditioning (HVAC) systems in commercial buildings;

255

Development Practice in HVAC Controls  

NLE Websites -- All DOE Office Websites (Extended Search)

Development Practice in HVAC Controls Development Practice in HVAC Controls Speaker(s): John Zhou Date: April 11, 2011 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Philip Haves The presentation will introduce development tools and design considerations used in HVAC controls development. Controls development use simulation, lab testing and field trial at different phases of the project cycle to improve control performance and to achieve rapid development. Development starts with simulation to originate and define algorithm concept. The concept is then implemented in a prototype controller, and tested in lab environment. The concept is refined and verified by analyzing lab results. In the final phase of development, controllers with refined and verified algorithms are installed in field trial sites to ensure system integration and to confirm

256

Energirigtige pumpekoblinger i HVAC-systemer  

E-Print Network (OSTI)

Energirigtige pumpekoblinger i HVAC-systemer PSO 2003 - FORSKNING & UDVIKLING I EFFEKTIV energieffektive HVAC-aggregater #12;InformationomProjektnr.:335-021 PROCESSEN: Projektet er gennemført af en reguleringsprincipper, mens Exhausto har leveret HVAC-aggregat og knowhow inden for klimasystemer. Grundfos

257

CALIFORNIA ENERGY Small HVAC Database Of Monitored  

E-Print Network (OSTI)

CALIFORNIA ENERGY COMMISSION Small HVAC Database Of Monitored Information Database of Compiled of the Integrated Design of Small Commercial HVAC Systems research project. The reports are a result of funding: Productivity and Interior Environments Integrated Design of Large Commercial HVAC Systems Integrated Design

258

CALIFORNIA ENERGY Small HVAC System Design Guide  

E-Print Network (OSTI)

CALIFORNIA ENERGY COMMISSION Small HVAC System Design Guide DESIGNGUIDELINES October 2003 500;#12;Small HVAC System Design Guide Acknowledgements i Acknowledgements The products and outcomes presented; Darren Goody, PECI, Design Guide review. #12;Small HVAC System Design Guide Preface ii Preface The Small

259

SIMULATION OF RESIDENTIAL HVAC SYSTEM PERFORMANCE  

E-Print Network (OSTI)

1 LBNL-47622 SIMULATION OF RESIDENTIAL HVAC SYSTEM PERFORMANCE Walker, I., Siegel, J ..................................................... 9 #12;3 ABSTRACT In many parts of North America residential HVAC systems are installed outside of the simulations is that they are dynamic - which accounts for cyclic losses from the HVAC system and the effect

260

PROJECT REPORT HVAC EQUIPMENT DEMOGRAPHICS AND CAPACITY  

E-Print Network (OSTI)

PROJECT REPORT HVAC EQUIPMENT DEMOGRAPHICS AND CAPACITY ANALYSIS TOOLS APPLICABLE TO MULTI Commercial HVAC Design Process 12 5.0 Conclusion 18 6.0 References 19 TABLE OF CONTENTS SECTIONS #12;MULTI performance by collectively improving the enve- lope, lighting and HVAC systems. The primary goals of the UC

California at Davis, University of

Note: This page contains sample records for the topic "hvac heating ventilation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

CALIFORNIA ENERGY Small HVAC Problems and Potential  

E-Print Network (OSTI)

CALIFORNIA ENERGY COMMISSION Small HVAC Problems and Potential Savings Reports Summary of Problems of the Integrated Design of Small Commercial HVAC Systems research project. The reports are a result of funding: Productivity and Interior Environments Integrated Design of Large Commercial HVAC Systems Integrated Design

262

Ventilation Systems for Cooling | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Ventilation Systems for Cooling Ventilation Systems for Cooling Ventilation Systems for Cooling May 30, 2012 - 6:19pm Addthis Proper ventilation helps you save energy and money. | Photo courtesy of JD Hancock. Proper ventilation helps you save energy and money. | Photo courtesy of JD Hancock. Ventilation is the least expensive and most energy-efficient way to cool buildings. Ventilation works best when combined with methods to avoid heat buildup in your home. In some cases, natural ventilation will suffice for cooling, although it usually needs to be supplemented with spot ventilation, ceiling fans, and window fans. For large homes, homeowners might want to investigate whole house fans. Interior ventilation is ineffective in hot, humid climates where

263

Ventilation System Basics | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Ventilation System Basics Ventilation System Basics Ventilation System Basics August 16, 2013 - 1:33pm Addthis Ventilation is the process of moving air into and out of an interior space by natural or mechanical means. Ventilation is necessary for the health and comfort of occupants of all buildings. Ventilation supplies air for occupants to breathe and removes moisture, odors, and indoor pollutants like carbon dioxide. Too little ventilation may result in poor indoor air quality, while too much may cause unnecessarily higher heating and cooling loads. Natural Ventilation Natural ventilation occurs when outdoor air is drawn inside through open windows or doors. Natural ventilation is created by the differences in the distribution of air pressures around a building. Air moves from areas of

264

Ventilation System Basics | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Ventilation System Basics Ventilation System Basics Ventilation System Basics August 16, 2013 - 1:33pm Addthis Ventilation is the process of moving air into and out of an interior space by natural or mechanical means. Ventilation is necessary for the health and comfort of occupants of all buildings. Ventilation supplies air for occupants to breathe and removes moisture, odors, and indoor pollutants like carbon dioxide. Too little ventilation may result in poor indoor air quality, while too much may cause unnecessarily higher heating and cooling loads. Natural Ventilation Natural ventilation occurs when outdoor air is drawn inside through open windows or doors. Natural ventilation is created by the differences in the distribution of air pressures around a building. Air moves from areas of

265

Equivalence in Ventilation and Indoor Air Quality  

SciTech Connect

We ventilate buildings to provide acceptable indoor air quality (IAQ). Ventilation standards (such as American Society of Heating, Refrigerating, and Air-Conditioning Enginners [ASHRAE] Standard 62) specify minimum ventilation rates without taking into account the impact of those rates on IAQ. Innovative ventilation management is often a desirable element of reducing energy consumption or improving IAQ or comfort. Variable ventilation is one innovative strategy. To use variable ventilation in a way that meets standards, it is necessary to have a method for determining equivalence in terms of either ventilation or indoor air quality. This study develops methods to calculate either equivalent ventilation or equivalent IAQ. We demonstrate that equivalent ventilation can be used as the basis for dynamic ventilation control, reducing peak load and infiltration of outdoor contaminants. We also show that equivalent IAQ could allow some contaminants to exceed current standards if other contaminants are more stringently controlled.

Sherman, Max; Walker, Iain; Logue, Jennifer

2011-08-01T23:59:59.000Z

266

Ventilation Systems for Cooling | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Ventilation Systems for Cooling Ventilation Systems for Cooling Ventilation Systems for Cooling May 30, 2012 - 6:19pm Addthis Proper ventilation helps you save energy and money. | Photo courtesy of JD Hancock. Proper ventilation helps you save energy and money. | Photo courtesy of JD Hancock. Ventilation is the least expensive and most energy-efficient way to cool buildings. Ventilation works best when combined with methods to avoid heat buildup in your home. In some cases, natural ventilation will suffice for cooling, although it usually needs to be supplemented with spot ventilation, ceiling fans, and window fans. For large homes, homeowners might want to investigate whole house fans. Interior ventilation is ineffective in hot, humid climates where

267

Multi-Source Hydronic Heat Pump System Performance Test Bed  

E-Print Network (OSTI)

An extensive independent evaluation recently was completed of the Multi-Source Hydronic Heat Pump (MSHHP) system, a proprietary heating, ventilating and air conditioning (HVAC) system developed by Meckler Systems Group. The MSHHP tests were conducted on a unique test bed designed and constructed by National Technical Systems (NTS) through a research and development grant program funded by Southern California Edison Company. This paper outlines testing methods and results, including evaluations of peak power and energy savings allowed by the innovative system. The main difference between the MSHHP and a conventional HVAC system is use of a chilled water "diversity" cooling loop interconnecting air to water coils (located at each water source heat pump unit) with a central chilled water storage tank. The MSHHP system uses significantly less energy than a conventional HVAC system, and lowers peak demand by shifting required electrical energy consumption to lower-cost, off-peak and mid-peak rates. Lower heat pump capacities are a main feature of the MSHHP. This is accomplished by pre-cooling return air from the zone space, a process that also allows the heat pump to operate at a higher Coefficient of Performance (COP), thereby contributing to further energy savings.

Meckler, M.

1984-01-01T23:59:59.000Z

268

Classroom HVAC: Improving ventilation and saving energy -- field study plan  

E-Print Network (OSTI)

and Saving Energy (IVSE) Field Study Plan Glossary SpecificEnergy (IVSE) Field Study Plan Table of Contents Table of Contents.i Glossary..

Apte, Michael G.; Faulkner, David; Hodgson, Alfred T.; Sullivan, Douglas P.

2004-01-01T23:59:59.000Z

269

Classroom HVAC: Improving ventilation and saving energy -- field study plan  

E-Print Network (OSTI)

method NIST-traceable RTD system with 0.02 o C ratedcheck against precision RTD sensors in the laboratory. Any

Apte, Michael G.; Faulkner, David; Hodgson, Alfred T.; Sullivan, Douglas P.

2004-01-01T23:59:59.000Z

270

Software tools for HVAC research  

Science Conference Proceedings (OSTI)

Energy saving methods can be employed to reduce energy consumption in buildings, or improve indoor thermal conditions. An example of those methods is the use of permeable coverings, but there are other important parameters like thermal inertia. To understand ... Keywords: Building, Computer, Design, Energy saving, HVAC, Software tools

José A. Orosa; Armando C. Oliveira

2011-10-01T23:59:59.000Z

271

Comparing Maintenance Costs of Geothermal Heat Pump Systems with other HVAC Systems in Lincoln Public Schools: Repair, Service, and Corrective Actions  

DOE Green Energy (OSTI)

The Lincoln Public School District, in Lincoln, Nebraska, recently installed vertical-bore geothermal heat pump systems in four, new, elementary schools. Because the district has consistent maintenance records and procedures, it was possible to study repair, service and corrective maintenance requests for 20 schools in the district. Each school studied provides cooling to over 70% of its total floor area and uses one of the following heating and cooling systems: vertical-bore geothermal heat pumps (GHPs), air-cooled chiller with gas-fired hot water boiler (ACUGHWB), water-cooled chiller with gas-fired hot water boiler (WCCYGHWB), or water-cooled chiller with gas-fired steam boiler (WCUGSB). Preventative maintenance and capital renewal activities were not included in the available database. GHP schools reported average total costs at 2.13 cents/ft{sup 2}-yr, followed by ACC/GHWB schools at 2.88 cents/ft{sup 2}-yr, WCC/GSB schools at 3.73 cents/ft{sup 2}-yr, and WCC/GHWB schools at 6.07 cents/ft{sup 2}-yr. Because of tax-exemptions on material purchases, a reliance on in-house labor, and the absence of preventative maintenance records in the database, these costs are lower than those reported in previous studies. A strong relationship (R{sup 2}=O.52) was found between costs examined and cooling system age: the newer the cooling equipment, the less it costs to maintain.

Martin, M.A.; Durfee, D.J.; Hughes, P.J.

1999-06-19T23:59:59.000Z

272

Transpired Air Collectors - Ventilation Preheating  

DOE Green Energy (OSTI)

Many commercial and industrial buildings have high ventilation rates. Although all that fresh air is great for indoor air quality, heating it can be very expensive. This short (2-page) fact sheet describes a technology available to use solar energy to preheat ventilation air and dramatically reduce utility bills.

Christensen, C.

2006-06-22T23:59:59.000Z

273

Comparing maintenance costs of geothermal heat pump systems with other HVAC systems in Lincoln public schools: Repair, service, and corrective actions  

SciTech Connect

The Lincoln Public School District, in Lincoln, Nebraska, recently installed vertical-bore geothermal heat pump systems in four new elementary schools. Because the district has consistent maintenance records and procedures, it was possible to study repair, service, and corrective maintenance requests for 20 schools in the district. Each school studied provides cooling to over 70% of its total floor area and uses one of the following heating and cooling systems: vertical-bore geothermal heat pumps (GHPs), air-cooled chiller with gas-fired hot water boiler (ACC/GHWB), water-cooled chiller with gas-fired hot water boiler (WCC/GHWB), or water-cooled chiller with gas-fired steam boiler (WCC/GSB). Preventative maintenance and capital renewal activities were not included in the available database. GHP schools reported average total costs at 2.13{cents}/ft{sup 2}-yr, followed by ACC/GHWB schools at 2.884{cents}/ft{sup 2}-yr, WCC/GSB schools at 3.73{cents}/ft{sup 2}-yr, and WCC/GHWB schools at 6.07{cents}/ft{sup 2}-yr. Because of tax exemptions on material purchases, a reliance on in-house labor, and the absence of preventative maintenance records in the database, these costs are lower than those reported in previous studies. A strong relationship (R{sup 2} = 0.52) was found between costs examined and cooling system age: the newer the cooling equipment, the less it costs to maintain.

Martin, M.A.; Durfee, D.J.; Hughes, P.J.

1999-07-01T23:59:59.000Z

274

US Department of Energys Regulatory Negotiations Convening on Commercial Certification for Heating, Ventilating, Air-Conditioning, and Refrigeration Equipment  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

US Department of Energy's Regulatory Negotiations Convening on US Department of Energy's Regulatory Negotiations Convening on Commercial Certification for Heating, Ventilating, Air-Conditioning, and Refrigeration Equipment Public Information for Convening Interviews I. What are the substantive issues DOE seeks to address? Strategies for grouping various basic models for purposes of certification; Identification of non-efficiency attributes, which do not impact the measured consumption of the equipment as tested by DOE's test procedure; The information that is certified to the Department; The timing of when the certification should be made relative to distribution in commerce; and Alterations to a basic model that would impact the certification.

275

Unusual HVAC challenges require innovative solutions  

SciTech Connect

There were many reasons behind Motorola`s decision to build the first 225,000 sq ft of a planned one million sq ft manufacturing facility in Chihuahua, Mexico. Among these were the availability of skilled labor in the area, lower construction costs, some export tax advantages, and the close proximity to the US border. The new facility is made up of a variety of functional areas that together create an impressively efficient plant. Phase 1 construction included a large manufacturing floor, shipping and receiving areas, a bulk storage facility, and a large office area with a view of the factory floor. The structure also houses a retail store where Motorola consumer products are sold, a conference and banquet center, a commercial kitchen, and dining facilities for 750. The design cooling load is 750 tons; the heating load is 4.5 million Btuh. The paper discusses the challenging location, the HVAC system, and the future expansion planned.

Jardine, G.M.; Gwin, O.D. [Heery International, Inc., Atlanta, GA (United States)

1998-02-01T23:59:59.000Z

276

STATE OF CALIFORNIA CERTIFICATE OF COMPLIANCE, PRESCRIPTIVE HVAC ALTERATIONS  

E-Print Network (OSTI)

STATE OF CALIFORNIA CERTIFICATE OF COMPLIANCE, PRESCRIPTIVE HVAC ALTERATIONS CEC-MECH-1C-ALT-HVAC (Revised 07/10) CALIFORNIA ENERGY COMMISSION CERTIFICATE OF COMPLIANCE MECH-1C-ALT-HVAC Prescriptive HVAC Steps" column below. Note: After installation of HVAC units and/or ducts, the Installation

277

HVAC Technician | Princeton Plasma Physics Lab  

NLE Websites -- All DOE Office Websites (Extended Search)

HVAC Technician HVAC Technician Department: Facilities Supervisor(s): Tom Ward Staff: L&S 07 Requisition Number: 1300884 Under the supervision of the General Lead Technician and Lead HVAC Technician, the incumbent will be responsible for the installation, preventative maintenance, troubleshooting and repair of various HVAC and refrigeration equipment; local HVAC control systems and ancillary support equipment; and will work with other groups within the Division and throughout the Laboratory to ensure long-term, safe and efficient operation of HVAC and refrigeration systems. All tasks must be completed in a timely, cost efficient manner, support on-going sustainability initiatives and energy efficiency programs at the Laboratory. The incumbent is expected to utilize thorough theoretical knowledge and techniques to accomplish

278

Physical features of small disperse coal dust fraction transportation and structurization processes in iodine air filters of absorption type in ventilation systems at nuclear power plants  

E-Print Network (OSTI)

The research on the physical features of transportation and structurization processes by the air-dust aerosol in the granular filtering medium with the cylindrical coal adsorbent granules in an air filter of the adsorption type in the heating ventilation and cooling (HVAC) system at the nuclear power plant is completed. The physical origins of the coal dust masses distribution along the absorber with the granular filtering medium with the cylindrical coal granules during the air-dust aerosol intake process in the near the surface layer of absorber are researched. The quantitative technical characteristics of air filtering elements, which have to be considered during the optimization of air filters designs for the application in the ventilation systems at the nuclear power plants, are obtained.

Ledenyov, Oleg P; Poltinin, P Ya; Fedorova, L I

2012-01-01T23:59:59.000Z

279

Compression effects on pressure loss in flexible HVAC ducts  

E-Print Network (OSTI)

to Determine Flow Resistance of HVAC Air Ducts and Fittings.Pressure Loss in Flexible HVAC Ducts Bass Abushakra, Ph.D.to Determine Flow Resistance of HVAC Air Ducts and Fittings.

Abushakra, Bass; Walker, Iain S.; Sherman, Max H.

2002-01-01T23:59:59.000Z

280

Wireless Temperature Sensors for Improved HVAC Control  

NLE Websites -- All DOE Office Websites (Extended Search)

reliable, and affordable and affordable Wireless Temperature Sensors for Improved HVAC Control An assessment of wireless sensor technology Executive Summary This Technology...

Note: This page contains sample records for the topic "hvac heating ventilation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Building America Expert Meeting Report: Transitioning Traditional HVAC Contractors to Whole House Performance Contractors  

DOE Green Energy (OSTI)

This report outlines findings resulting from a U.S. Department of Energy Building America expert meeting to determine how HVAC companies can transition from a traditional contractor status to a service provider for whole house energy upgrade contracting. IBACOS has embarked upon a research effort under the Building America Program to understand business impacts and change management strategies for HVAC companies. HVAC companies can implement these strategies in order to quickly transition from a 'traditional' heating and cooling contractor to a service provider for whole house energy upgrade contracting. Due to HVAC service contracts, which allow repeat interaction with homeowners, HVAC companies are ideally positioned in the marketplace to resolve homeowner comfort issues through whole house energy upgrades. There are essentially two primary ways to define the routes of transition for an HVAC contractor taking on whole house performance contracting: (1) Sub-contracting out the shell repair/upgrade work; and (2) Integrating the shell repair/upgrade work into their existing business. IBACOS held an Expert Meeting on the topic of Transitioning Traditional HVAC Contractors to Whole House Performance Contractors on March 29, 2011 in San Francisco, CA. The major objectives of the meeting were to: Review and validate the general business models for traditional HVAC companies and whole house energy upgrade companies Review preliminary findings on the differences between the structure of traditional HVAC Companies and whole house energy upgrade companies Seek industry input on how to structure information so it is relevant and useful for traditional HVAC contractors who are transitioning to becoming whole house energy upgrade contractors Seven industry experts identified by IBACOS participated in the session along with one representative from the National Renewable Energy Laboratory (NREL). The objective of the meeting was to validate the general operational profile of an integrated whole house performance contracting company and identify the most significant challenges facing a traditional HVAC contractor looking to transition to a whole house performance contractor. To facilitate the discussion, IBACOS divided the business operations profile of a typical integrated whole house performance contracting company (one that performs both HVAC and shell repair/upgrade work) into seven Operational Areas with more detailed Business Functions and Work Activities falling under each high-level Operational Area. The expert panel was asked to review the operational profile or 'map' of the Business Functions. The specific Work Activities within the Business Functions identified as potential transition barriers were rated by the group relative to the value in IBACOS creating guidance ensuring a successful transition and the relative difficulty in executing.

Burdick, A.

2011-10-01T23:59:59.000Z

282

Simulation model air-to-air plate heat exchanger  

Science Conference Proceedings (OSTI)

A simple simulation model of an air-to-air plate heat exchanger is presented. The model belongs to a collection of simulation models that allows the eflcient computer simulation of heating, ventilation, and air-conditioning (HVAC) systems. The main emphasis of the models is to shorten computation time and to use only input data that are known in the design process of an HVAC system. The target of the models is to describe the behavior of HVAC components in the part-load operation mode, which is becoming increasingly important in energy eficient HVAC systems. The models are intended to be used for yearly energy calculations or load calculations with time steps of about 10 minutes or larger. Short- time dynamic effects, which are of interest for different aspects of control theory, are neglected. The part-load behavior is expressed in terms of the nominal condition and the dimensionless variation of the heat transfer with change of mass flow and temperature. The effectiveness- NTU relations are used to parametrize the convective heat transfer at nominal conditions and to compute the part-load condition. If the heat transfer coefficients on the two exchanger sides are not equal (i. e. due to partial bypassing of air), their ratio can be easily calculated and set as a parameter. The model is static and uses explicit equations only. The explicit model formulation ensures short computation time and numerical stability, which allows using the model with sophisticated engineering methods like automatic system optimization. This paper fully outlines the algorithm description and its simplifications. It is not tailored for any particular simulation program to ensure easy implementation in any simulation program.

Wetter, Michael

1999-01-01T23:59:59.000Z

283

Measuring rates of outdoor airflow into HVAC systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Measuring rates of outdoor airflow into HVAC systems Title Measuring rates of outdoor airflow into HVAC systems Publication Type Journal Article LBNL Report Number LBNL-51583 Year...

284

Report on HVAC Option Selections for a Relocatable Classroom...  

NLE Websites -- All DOE Office Websites (Extended Search)

Report on HVAC Option Selections for a Relocatable Classroom Energy and Indoor Environmental Quality Field Study Title Report on HVAC Option Selections for a Relocatable Classroom...

285

Modeling and Simulation of HVAC Faulty Operations and Performance...  

NLE Websites -- All DOE Office Websites (Extended Search)

Modeling and Simulation of HVAC Faulty Operations and Performance Degradation due to Maintenance Issues Title Modeling and Simulation of HVAC Faulty Operations and Performance...

286

Improving Relocatable Classroom HVAC For Improved IEQ And Energy...  

NLE Websites -- All DOE Office Websites (Extended Search)

Improving Relocatable Classroom HVAC For Improved IEQ And Energy Efficiency Title Improving Relocatable Classroom HVAC For Improved IEQ And Energy Efficiency Publication Type...

287

DOE Convening Report on Certification of Commercial HVAC and...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Convening Report on Certification of Commercial HVAC and CRE Products DOE Convening Report on Certification of Commercial HVAC and CRE Products This document is the convening...

288

Ameren Illinois (Electric) - Custom, HVAC, and Motor Business...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Ameren Illinois (Electric) - Custom, HVAC, and Motor Business Efficiency Incentives Ameren Illinois (Electric) - Custom, HVAC, and Motor Business Efficiency Incentives < Back...

289

Monitoring-based HVAC Commissioning of an Existing Office Building...  

NLE Websites -- All DOE Office Websites (Extended Search)

Monitoring-based HVAC Commissioning of an Existing Office Building for Energy Efficiency Title Monitoring-based HVAC Commissioning of an Existing Office Building for Energy...

290

Chapter 5: Lighting, HVAC, and Plumbing | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

5: Lighting, HVAC, and Plumbing Chapter 5: Lighting, HVAC, and Plumbing Chapter 5 of the LANL Sustainable Design Guide with guidelines for developing sustainable, healthy,...

291

Comparison of Building Energy Modeling Programs: HVAC Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Modeling Programs: HVAC Systems Title Comparison of Building Energy Modeling Programs: HVAC Systems Publication Type Report LBNL Report Number LBNL-6432E Year of Publication 2013...

292

Modeling and simulation of HVAC faults in EnergyPlus  

NLE Websites -- All DOE Office Websites (Extended Search)

simulation of HVAC faults in EnergyPlus Title Modeling and simulation of HVAC faults in EnergyPlus Publication Type Conference Paper Refereed Designation Refereed Year of...

293

New and Underutilized Technology: HVAC Occupancy Sensors | Department...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

HVAC Occupancy Sensors New and Underutilized Technology: HVAC Occupancy Sensors October 4, 2013 - 4:20pm Addthis The following information outlines key deployment considerations...

294

Luminaire/plenum/HVAC simulator  

SciTech Connect

This paper describes a new apparatus designed to model the physical parameters that affect fluorescent lamp performance under realistic operating conditions. These parameters include fixture type, mounting configuration, HVAC integration, and room air temperature, which directly determine the minimum lamp wall temperature (MLWT) and, therefore, the resulting light output of the lamp/ballast system. This apparatus is used principally to measure MLWT under operating conditions, which enables us to identify the effects the major parameters have on lamp/ballast system performance. Initial parametric results illustrate the use of this apparatus to provide representative MLWTs for a range of application conditions.

Siminovitch, M.J.; Rubinstein, F.M.; Clark, T.A.; Verderber, R.R.

1985-07-01T23:59:59.000Z

295

Ventilation and Energy Saving in Auto Manufacturing Plants  

NLE Websites -- All DOE Office Websites (Extended Search)

Ventilation and Energy Saving in Auto Manufacturing Plants Ventilation and Energy Saving in Auto Manufacturing Plants Speaker(s): Alexander M. Zhivov Date: April 3, 2002 - 12:00pm Location: Bldg. 90 Dr. Alexander Zhivov is currently the chairman of the International Task Force "Autovent International" focusing on environmental problems within the Automotive Industry. This Task Force was formed in 1997 to develop the "Ventilation Guide for Automotive Industry". The guide was to be seen as a building block within the EU sponsored "Industrial Ventilation Design Guide Book" project, covering both theory and applications. In his presentation, Dr. Zhivov will talk about his work with the automotive industry, describe major highlights from the "Ventilation Guide for Automotive Industry" and talk about building, process and HVAC

296

Impacts of increased outdoor air flow rates on annual HVAC energy costs in office environment.  

E-Print Network (OSTI)

??The use of different ventilation systems has an important impact on the energy cost of office buildings. This paper examines the relationship between heating and… (more)

Destrez, Adrien

2011-01-01T23:59:59.000Z

297

Ventilation Model and Analysis Report  

Science Conference Proceedings (OSTI)

This model and analysis report develops, validates, and implements a conceptual model for heat transfer in and around a ventilated emplacement drift. This conceptual model includes thermal radiation between the waste package and the drift wall, convection from the waste package and drift wall surfaces into the flowing air, and conduction in the surrounding host rock. These heat transfer processes are coupled and vary both temporally and spatially, so numerical and analytical methods are used to implement the mathematical equations which describe the conceptual model. These numerical and analytical methods predict the transient response of the system, at the drift scale, in terms of spatially varying temperatures and ventilation efficiencies. The ventilation efficiency describes the effectiveness of the ventilation process in removing radionuclide decay heat from the drift environment. An alternative conceptual model is also developed which evaluates the influence of water and water vapor mass transport on the ventilation efficiency. These effects are described using analytical methods which bound the contribution of latent heat to the system, quantify the effects of varying degrees of host rock saturation (and hence host rock thermal conductivity) on the ventilation efficiency, and evaluate the effects of vapor and enhanced vapor diffusion on the host rock thermal conductivity.

V. Chipman

2003-07-18T23:59:59.000Z

298

An Application of State-Of-The-Art HVAC and Building Systems  

E-Print Network (OSTI)

This case study describes the successful application of state-of-the-art HVAC and building systems at a large commercial office and industrial facility. The facility's exterior envelope systems, HVAC systems, lighting systems, energy conservation systems, exhaust/heat recovery/make-up air systems, water cooling systems, compressed air systems, electrical distribution systems, water heating systems, and other systems and measures taken are each discussed in detail. The important role that energy engineering played in the overall planning, design, and management of the project is given particular emphasis. Also, the engineering strategies used to integrate energy efficiency, performance optimization, current technology, and cost effectiveness are underscored throughout.

Fiorino, D. P.

1988-09-01T23:59:59.000Z

299

New Air Cleaning Strategies for Reduced Commercial Building Ventilation Energy  

SciTech Connect

Approximately ten percent of the energy consumed in U.S. commercial buildings is used by HVAC systems to condition outdoor ventilation air. Reducing ventilation rates would be a simple and broadly-applicable energy retrofit option, if practical counter measures were available that maintained acceptable concentrations of indoor-generated air pollutants. The two general categories of countermeasures are: 1) indoor pollutant source control, and 2) air cleaning. Although pollutant source control should be used to the degree possible, source control is complicated by the large number and changing nature of indoor pollutant sources. Particle air cleaning is already routinely applied in commercial buildings. Previous calculations indicate that particle filtration consumes only 10percent to 25percent of the energy that would otherwise be required to achieve an equivalent amount of particle removal with ventilation. If cost-effective air cleaning technologies for volatile organic compounds (VOCs) were also available, outdoor air ventilation rates could be reduced substantially and broadly in the commercial building stock to save energy. The research carried out in this project focuses on developing novel VOC air cleaning technologies needed to enable energy-saving reductions in ventilation rates. The minimum required VOC removal efficiency to counteract a 50percent reduction in ventilation rate for air cleaning systems installed in the HVAC supply airstream is modest (generally 20percent or less).

Sidheswaran, Meera; Destaillats, Hugo; Sullivan, Douglas P.; Fisk, William J.

2010-10-27T23:59:59.000Z

300

Residential HVAC Indoor Air Quality(ASHRAE 62.2)  

E-Print Network (OSTI)

Residential HVAC && Indoor Air Quality(ASHRAE 62.2) Tav Commins #12;Contact Information · Energy construction, Additions /Alterations · Nonresidential and Residential #12;Residential HVAC && Indoor Air Quality(ASHRAE 62.2) ·HVAC EfficiencyHVAC Efficiency ·Quality Installation (HERS Measures) S li b HERS R t

Note: This page contains sample records for the topic "hvac heating ventilation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

2013 Energy Code Changes That Effect the HVAC  

E-Print Network (OSTI)

2013 Energy Code Changes That Effect the HVAC Industry Tav Commins Mechanical Engineer California Energy Commission #12;HVAC Mandatory Measures For All Newly Installed Residential HVAC Systems (New Watt Draw at .58 W/CFM, or (return duct and filter sizing) MERV 6 Filter #12;Residential HVAC Measures

California at Davis, University of

302

CALIFORNIA ENERGY Large HVAC Field and Baseline Data  

E-Print Network (OSTI)

CALIFORNIA ENERGY COMMISSION Large HVAC Field and Baseline Data Field Data Collection: Site Survey of the Integrated Design of Large Commercial HVAC Systems research project. The reports are a result of funding Design of Large Commercial HVAC Systems Integrated Design of Small Commercial HVAC Systems Integrated

303

Salsbury and Diamond: Automated Testing of HVAC Systems for Commissioning -1 -Automated Testing of HVAC Systems for Commissioning  

E-Print Network (OSTI)

and Diamond: Automated Testing of HVAC Systems for Commissioning - 1 - Automated Testing of HVAC Systems This paper describes an approach to the automation of the commissioning of HVAC systems. The approach of many HVAC systems is limited more by poor installation, commissioning, and maintenance than by poor

304

Optimization Control Strategies for HVAC Terminal Boxes  

E-Print Network (OSTI)

The HVAC terminal boxes are one of the major building HVAC components. They directly impact the building room comfort conditions and the energy costs. How to operate the box in a highly energy efficient way and maintain the room comfort level is an important topic in today's building energy management and HVAC control field. The authors developed novel optimized control strategies and operation schedules for the terminal boxes for both occupied and non-occupied hours. The optimized control schedules were implemented in a medical complex during the commissioning. This not only improved the building comfort conditions but also reduced the energy costs.

Zhu, Y.; Batten, T.; Noboa, H.; Claridge, D. E.; Turner, W. D.; Liu, M.; Zhou, J.; Cameron, C.; Keeble, D.; Hirchak, R.

2000-01-01T23:59:59.000Z

305

Breathing HRV by the Concept of AC Ventilation  

NLE Websites -- All DOE Office Websites (Extended Search)

Breathing HRV by the Concept of AC Ventilation Breathing HRV by the Concept of AC Ventilation Speaker(s): Hwataik Han Date: July 10, 2007 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Thomas McKone Heat recovery ventilators are frequently used to save heating/cooling loads of buildings for ventilation. There are several types of HRV's, including a parallel plate type, a rotary type, a capillary type, and a heat pipe type. The breathing HRV is a heat recovery ventilator of a new kind using the concept of alternating-current ventilation. The AC ventilation is the ventilation with the airflow directions reversed periodically. It has an advantage of using a single duct system, for both supply and exhaust purposes. In order to develop a breathing HRV system, the thermal recovery performance should be investigated depending on many parameters, such as

306

Best Practices for Energy Efficient Cleanrooms Efficient HVAC Systems: Variable-Speed-Drive Chillers  

E-Print Network (OSTI)

resource/24/ ASHRAE handbook – HVAC systems and equipments.Efficient Cleanrooms Efficient HVAC Systems: Variable-Speed-Efficient Cleanrooms Efficient HVAC Water Systems: Variable-

Xu, Tengfang

2005-01-01T23:59:59.000Z

307

Laboratory measurement of secondary pollutant yields from ozone reaction with HVAC filters.  

E-Print Network (OSTI)

from Ozone Reaction with HVAC Filters Hugo Destaillats,from Ozone Reaction with HVAC Filters Hugo Destaillatsfrom Ozone Reaction with HVAC Filters Hugo Destaillats

Destaillats, Hugo

2012-01-01T23:59:59.000Z

308

Case study field evaluation of a systems approach to retrofitting a residential HVAC system  

E-Print Network (OSTI)

Practices for Residential HVAC Systems”. Boston, MA. Jump,techniques for measuring HVAC grille air flows". ASHRAEPractices Guide for Residential HVAC Retrofits. LBNL 53592.

Walker, Iain S.; McWiliams, Jennifer A.; Konopacki, Steven J.

2003-01-01T23:59:59.000Z

309

Home Energy Article: A Systems Approach to Retrofitting Residential HVAC Systems  

E-Print Network (OSTI)

to Retrofitting a Residential HVAC System, Lawrence Berkeleyducts. New downsized ducts and HVAC equipment. The ducts areto Retrofitting Residential HVAC Systems J.A. McWilliams and

McWilliams, Jennifer A.; Walker, Iain S.

2005-01-01T23:59:59.000Z

310

Model Predictive Control of HVAC Systems: Implementation and Testing at the University of California, Merced  

E-Print Network (OSTI)

Model Predictive Control of HVAC Systems:    Implementation and  air  conditioning  (HVAC)  account  for  27%  of  the reduction potential of HVAC systems with  active thermal 

Haves, Phillip

2010-01-01T23:59:59.000Z

311

An implementation of co-simulation for performance prediction of innovative integrated HVAC systems in buildings  

E-Print Network (OSTI)

and Judkoff, R. 2002. IEA HVAC BESTEST volume 1, Technicaland Judkoff, R. 2004. IEA HVAC BESTEST volume 2, TechnicalOF INNOVATIVE INTEGRATED HVAC SYSTEMS IN BUILDINGS Marija

Trcka, Marija

2010-01-01T23:59:59.000Z

312

Comparisons of HVAC Simulations between EnergyPlus and DOE-2.2 for Data Centers  

E-Print Network (OSTI)

ABORATORY Comparisons of HVAC Simulations between EnergyPlusemployer. Comparisons of HVAC Simulations between EnergyPlusThis paper compares HVAC simulations between EnergyPlus and

Hong, Tianzhen

2009-01-01T23:59:59.000Z

313

Improving Indoor Environmental Quality And Energy Performance Of Modular Classroom HVAC Systems  

E-Print Network (OSTI)

Schools (CHPS). 2002. "HVAC Best Practices Manual." CHPSOF MODULAR CLASSROOM HVAC SYSTEMS Michael G. APTE Ph.D. MPHRelocatable Classroom HVAC for Improved IEQ and Energy

Apte, Michael G.; Spears, Michael; Lai, Chi-Ming; Shendell, Derek G.

2005-01-01T23:59:59.000Z

314

Investigation of IAQ-Relevant Surface Chemistry and Emissions on HVAC Filter Materials  

E-Print Network (OSTI)

VOCs emitted by reactions of HVAC filters with ozone usingChemistry and Emissions on HVAC Filter Materials HugoChemistry and Emissions on HVAC Filter Materials Authors:

Destaillats, Hugo

2010-01-01T23:59:59.000Z

315

HVAC Modeling for Cost of Ownership Assessment in Biotechnology & Drugs Manufacturing  

E-Print Network (OSTI)

2000 Broomes, Peter. , “HVAC Modeling for Cost of Ownership2000 Broomes, Peter. , “HVAC Results Comparison”, April,HVAC Modeling for Cost of Ownership Assessment in

Broomes, Peter; Dornfeld, David A

2003-01-01T23:59:59.000Z

316

A Potential Path to Emissions-Free Fossil EnergyA Potential Path...  

NLE Websites -- All DOE Office Websites (Extended Search)

a Difference Incorporation of a new CO2 sorbent into commercial heating, ventilation, and air conditioning (HVAC) systems will save energy and reduce operating costs. HVAC is one...

317

BS-8: HVAC Modeling and Simulation  

NLE Websites -- All DOE Office Websites (Extended Search)

BS-8: HVAC Modeling and Simulation BS-8: HVAC Modeling and Simulation Speaker(s): Darko Sucic Date: December 5, 2001 - 12:00pm Location: Bldg. 90 Seminar Host/Point of Contact: Satkartar K. Kinney Industry Foundation Classes (IFC), an object data model of buildings, are being developed by the International Alliance for Interoperability (IAI) to support data sharing and exchange in the building and construction industry. The IAI, founded in 1995, has published four releases of IFC so far. Several prototype implementations by leading software companies show that commercial IFC software is beginning to meet end user expectations of interoperability in the industry. BS-8 is an LBNL project that started last summer. It is developing the IFC HVAC extension schemata that will extend the IFC object data model and support the exchange of HVAC information

318

Wireless Demand Response Controls for HVAC  

NLE Websites -- All DOE Office Websites (Extended Search)

Wireless Demand Response Controls for HVAC Speaker(s): Clifford Federspiel Date: June 22, 2006 - 12:00pm Location: 90-3148 Seminar HostPoint of Contact: Richard Diamond Peng Xu We...

319

HVAC Energy Recovery Design and Economic Evaluation  

E-Print Network (OSTI)

ENRECO has prepared this paper on HVAC energy recovery to provide the engineer with an overview of the design engineering as well as the economic analysis considerations necessary to evaluate the potential benefits of energy recovery.

Kinnier, R. J.

1979-01-01T23:59:59.000Z

320

Modeling and optimization of building HVAC systems.  

E-Print Network (OSTI)

??This thesis presents the development of hybrid modeling methodologies for HVAC component static/steady-state models and dynamic/transient models, and the development and implementation of a model-based… (more)

Jin, Guang Yu.

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hvac heating ventilation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Improving Ventilation and Saving Energy: Relocatable ClassroomField Study Interim Report  

Science Conference Proceedings (OSTI)

The primary goals of this research effort are to develop, evaluate, and demonstrate a very practical HVAC system for classrooms that consistently provides classrooms with the quantity of ventilation in current minimum standards, while saving energy, and reducing HVAC-related noise levels. This research is motivated by the public benefits of energy efficiency, evidence that many classrooms are under-ventilated, and public concerns about indoor environmental quality in classrooms. This report presents an interim status update and preliminary findings from energy and indoor environmental quality (IEQ) measurements in sixteen relocatable classrooms in California. The field study includes measurements of HVAC energy use, ventilation rates, and IEQ conditions. Ten of the classrooms were equipped with a new HVAC technology and six control classrooms were equipped with a standard HVAC system. Energy use and many IEQ parameters have been monitored continuously, while unoccupied acoustic measurements were measured in one of four planned seasonal measurement campaigns. Continuously monitored data are remotely accessed via a LonWorks{reg_sign} network and stored in a relational database at LBNL. Preliminary results are presented here.

Apte, Michael G.; Buchanan, Ian S.; Faulkner, David; Hotchi,Toshifumi; Spears,Michael; Sullivan, Douglas P.; Wang, Duo

2005-09-01T23:59:59.000Z

322

Performance Assessment of Photovoltaic Attic Ventilator Fans  

E-Print Network (OSTI)

Controlling summer attic heat gain is important to reducing air conditioning energy use in homes in hot-humid climates. Both heat transfer through ceilings and t attic duct systems can make up a large part of peak cooling demand, Attic ventilation has long been identified as a method to abate such heat gains. We present test results from using the photovoltaic (PV) attic ventilator fans in a test home to assess impact on attic and cooling energy performance.

Parker, D. S.; Sherwin, J. R.

2000-01-01T23:59:59.000Z

323

Subsurface Ventilation System Description Document  

Science Conference Proceedings (OSTI)

The Subsurface Ventilation System supports the construction and operation of the subsurface repository by providing air for personnel and equipment and temperature control for the underground areas. Although the system is located underground, some equipment and features may be housed or located above ground. The system ventilates the underground by providing ambient air from the surface throughout the subsurface development and emplacement areas. The system provides fresh air for a safe work environment and supports potential retrieval operations by ventilating and cooling emplacement drifts. The system maintains compliance within the limits established for approved air quality standards. The system maintains separate ventilation between the development and waste emplacement areas. The system shall remove a portion of the heat generated by the waste packages during preclosure to support thermal goals. The system provides temperature control by reducing drift temperature to support potential retrieval operations. The ventilation system has the capability to ventilate selected drifts during emplacement and retrieval operations. The Subsurface Facility System is the main interface with the Subsurface Ventilation System. The location of the ducting, seals, filters, fans, emplacement doors, regulators, and electronic controls are within the envelope created by the Ground Control System in the Subsurface Facility System. The Subsurface Ventilation System also interfaces with the Subsurface Electrical System for power, the Monitored Geologic Repository Operations Monitoring and Control System to ensure proper and safe operation, the Safeguards and Security System for access to the emplacement drifts, the Subsurface Fire Protection System for fire safety, the Emplacement Drift System for repository performance, and the Backfill Emplacement and Subsurface Excavation Systems to support ventilation needs.

Eric Loros

2001-07-25T23:59:59.000Z

324

Subsurface Ventilation System Description Document  

Science Conference Proceedings (OSTI)

The Subsurface Ventilation System supports the construction and operation of the subsurface repository by providing air for personnel and equipment and temperature control for the underground areas. Although the system is located underground, some equipment and features may be housed or located above ground. The system ventilates the underground by providing ambient air from the surface throughout the subsurface development and emplacement areas. The system provides fresh air for a safe work environment and supports potential retrieval operations by ventilating and cooling emplacement drifts. The system maintains compliance within the limits established for approved air quality standards. The system maintains separate ventilation between the development and waste emplacement areas. The system shall remove a portion of the heat generated by the waste packages during preclosure to support thermal goals. The system provides temperature control by reducing drift temperature to support potential retrieval operations. The ventilation system has the capability to ventilate selected drifts during emplacement and retrieval operations. The Subsurface Facility System is the main interface with the Subsurface Ventilation System. The location of the ducting, seals, filters, fans, emplacement doors, regulators, and electronic controls are within the envelope created by the Ground Control System in the Subsurface Facility System. The Subsurface Ventilation System also interfaces with the Subsurface Electrical System for power, the Monitored Geologic Repository Operations Monitoring and Control System to ensure proper and safe operation, the Safeguards and Security System for access to the emplacement drifts, the Subsurface Fire Protection System for fire safety, the Emplacement Drift System for repository performance, and the Backfill Emplacement and Subsurface Excavation Systems to support ventilation needs.

NONE

2000-10-12T23:59:59.000Z

325

Energy conservation by adaptive control for a solar heated building  

DOE Green Energy (OSTI)

Identification and optimal control techniques are combined to form an adaptive optimal control strategy which is used to minimize the auxiliary energy consumption for a solar heated building. The adaptive optimal control strategy is described and application of the adaptive optimal controller to the heating, ventilating, and air conditioning (HVAC) system in an appropriate building is modeled. The building used is the newly completed National Security and Resources Study Center (NSRSC) at the Los Alamos Scientific Laboratory (LASL). The NSRSC uses an 8000 sq. ft. solar collector to provide energy for heating and cooling the building. A cost functional to define optimal performance of the HVAC system and an identification process to produce a linearized building model are combined to yield an adaptive linear regulator solution. Although solar energy is used for both heating and cooling the NSRSC, only the results from the heating simulation are available for presentation here. Energy savings predicted by the model when compared to a conventional control system are described and an alternate system configuration is briefly discussed. Plans for actual implementation of the adaptive optimal controller are discussed.

Farris, D.R.; Melsa, J.L.; Murray, H.S.; McDonald, T.E.; Springer, T.E.

1977-01-01T23:59:59.000Z

326

Critical Question #4: What are the Best Off-the-Shelf HVAC Solutions for  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Critical Question #4: What are the Best Off-the-Shelf HVAC Critical Question #4: What are the Best Off-the-Shelf HVAC Solutions for Low-Load, High-Performance Homes and Apartments? Critical Question #4: What are the Best Off-the-Shelf HVAC Solutions for Low-Load, High-Performance Homes and Apartments? What is currently in the market? What are the limitations of these systems? What are the desired specifications for these systems? What are the realistic space conditioning loads of these high-performance homes and apartments? cq4_forced_air_systems_walker.pdf cq4_simplified_space_cond_prahl.pdf cq4_ground_heat_exchanger_im.pdf More Documents & Publications Track C - Market-Driven Research Solutions Track B - Critical Guidance for Peak Performance Homes Energy Storage & Power Electronics 2008 Peer Review - Power Electronics

327

HVAC vs. Space Heaters: Which is More Efficient? | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

HVAC vs. Space Heaters: Which is More Efficient? HVAC vs. Space Heaters: Which is More Efficient? HVAC vs. Space Heaters: Which is More Efficient? January 10, 2011 - 4:27pm Addthis Andrea Spikes Communicator at DOE's National Renewable Energy Laboratory I live in Colorado, and when it's cold it is very, very cold. Since I hate paying high heating bills, I typically have my thermostat set to a chilly 62°F. My husband and I have gotten used to this, and really like being able to use a warm comforter while the air stays cooler. There are some nights, however, that even this setting seems too high and the heater is running a lot more than I'd like it to. When it's below 0° overnight, or even sometimes during the day, we occasionally break out our oil-filled space heater when we're only using one room. That has me

328

HVAC vs. Space Heaters: Which is More Efficient? | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

HVAC vs. Space Heaters: Which is More Efficient? HVAC vs. Space Heaters: Which is More Efficient? HVAC vs. Space Heaters: Which is More Efficient? January 10, 2011 - 4:27pm Addthis Andrea Spikes Communicator at DOE's National Renewable Energy Laboratory I live in Colorado, and when it's cold it is very, very cold. Since I hate paying high heating bills, I typically have my thermostat set to a chilly 62°F. My husband and I have gotten used to this, and really like being able to use a warm comforter while the air stays cooler. There are some nights, however, that even this setting seems too high and the heater is running a lot more than I'd like it to. When it's below 0° overnight, or even sometimes during the day, we occasionally break out our oil-filled space heater when we're only using one room. That has me

329

Computer Modeling VRF Heat Pumps in Commercial Buildings using EnergyPlus  

Science Conference Proceedings (OSTI)

Variable Refrigerant Flow (VRF) heat pumps are increasingly used in commercial buildings in the United States. Monitored energy use of field installations have shown, in some cases, savings exceeding 30% compared to conventional heating, ventilating, and air-conditioning (HVAC) systems. A simulation study was conducted to identify the installation or operational characteristics that lead to energy savings for VRF systems. The study used the Department of Energy EnergyPlus? building simulation software and four reference building models. Computer simulations were performed in eight U.S. climate zones. The baseline reference HVAC system incorporated packaged single-zone direct-expansion cooling with gas heating (PSZ-AC) or variable-air-volume systems (VAV with reheat). An alternate baseline HVAC system using a heat pump (PSZ-HP) was included for some buildings to directly compare gas and electric heating results. These baseline systems were compared to a VRF heat pump model to identify differences in energy use. VRF systems combine multiple indoor units with one or more outdoor unit(s). These systems move refrigerant between the outdoor and indoor units which eliminates the need for duct work in most cases. Since many applications install duct work in unconditioned spaces, this leads to installation differences between VRF systems and conventional HVAC systems. To characterize installation differences, a duct heat gain model was included to identify the energy impacts of installing ducts in unconditioned spaces. The configuration of variable refrigerant flow heat pumps will ultimately eliminate or significantly reduce energy use due to duct heat transfer. Fan energy is also studied to identify savings associated with non-ducted VRF terminal units. VRF systems incorporate a variable-speed compressor which may lead to operational differences compared to single-speed compression systems. To characterize operational differences, the computer model performance curves used to simulate cooling operation are also evaluated. The information in this paper is intended to provide a relative difference in system energy use and compare various installation practices that can impact performance. Comparative results of VRF versus conventional HVAC systems include energy use differences due to duct location, differences in fan energy when ducts are eliminated, and differences associated with electric versus fossil fuel type heating systems.

Raustad, Richard

2013-06-01T23:59:59.000Z

330

Ventilation | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Ventilation Ventilation Ventilation Controlled ventilation keeps energy-efficient homes healthy and comfortable. Learn more about ventilation. Controlled ventilation keeps energy-efficient homes healthy and comfortable. Learn more about ventilation. When creating an energy-efficient, airtight home through air sealing, it's very important to consider ventilation. Unless properly ventilated, an airtight home can seal in indoor air pollutants. Ventilation also helps control moisture-another important consideration for a healthy, energy-efficient home. Featured Whole-House Ventilation A whole-house ventilation system with dedicated ducting in a new energy-efficient home. | Photo courtesy of ©iStockphoto/brebca. Tight, energy-efficient homes require mechanical -- usually whole-house --

331

Improving Ventilation and Saving Energy: Final Report on Indoor Environmental Quality and Energy Monitoring in Sixteen Relocatable Classrooms  

Science Conference Proceedings (OSTI)

An improved HVAC system for portable classrooms was specified to address key problems in existing units. These included low energy efficiency, poor control of and provision for adequate ventilation, and excessive acoustic noise. Working with industry, a prototype improved heat pump air conditioner was developed to meet the specification. A one-year measurement-intensive field-test of ten of these IHPAC systems was conducted in occupied classrooms in two distinct California climates. These measurements are compared to those made in parallel in side by side portable classrooms equipped with standard 10 SEER heat pump air conditioner equipment. The IHPAC units were found to work as designed, providing predicted annual energy efficiency improvements of about 36 percent to 42 percent across California's climate zones, relative to 10 SEER units. Classroom ventilation was vastly improved as evidenced by far lower indoor minus outdoor CO2 concentrations. TheIHPAC units were found to provide ventilation that meets both California State energy and occupational codes and the ASHRAE minimum ventilation requirements; the classrooms equipped with the 10 SEER equipment universally did not meet these targets. The IHPAC system provided a major improvement in indoor acoustic conditions. HVAC system generated background noise was reduced in fan-only and fan and compressor modes, reducing the nose levels to better than the design objective of 45 dB(A), and acceptable for additional design points by the Collaborative on High Performance Schools. The IHPAC provided superior ventilation, with indoor minus outdoor CO2 concentrations that showed that the Title 24 minimum ventilation requirement of 15 CFM per occupant was nearly always being met. The opposite was found in the classrooms utilizing the 10 SEER system, where the indoor minus outdoor CO2 concentrations frequently exceeded levels that reflect inadequate ventilation. Improved ventilation conditions in the IHPAC lead to effective removal of volatile organic compounds and aldehydes, on average lowering the concentrations by 57 percent relative to the levels in the 10 SEER classrooms. The average IHPAC to 10 SEER formaldehyde ratio was about 67 percent, indicating only a 33 percent reduction of this compound in indoor air. The IHPAC thermal control system provided less variability in occupied classroom temperature than the 10 SEER thermostats. The average room temperatures in all seasons tended to be slightly lower in the IHPAC classrooms, often below the lower limit of the ASHRAE 55 thermal comfort band. State-wide and national energy modeling provided conservative estimates of potential energy savings by use of the IHPAC system that would provide payback a the range of time far lower than the lifetime of the equipment. Assuming electricity costs of $0.15/kWh, the perclassroom range of savings is from about $85 to $195 per year in California, and about $89 to $250 per year in the U.S., depending upon the city. These modelsdid not include the non-energy benefits to the classrooms including better air quality and acoustic conditions that could lead to improved health and learning in school. Market connection efforts that were part of the study give all indication that this has been a very successful project. The successes include the specification of the IHPAC equipment in the CHPS portable classroom standards, the release of a commercial product based on the standards that is now being installed in schools around the U.S., and the fact that a public utility company is currently considering the addition of the technology to its customer incentive program. These successes indicate that the IHPAC may reach its potential to improve ventilation and save energy in classrooms.

Michael G. Apte, Bourassa Norman, David Faulkner, Alfred T. Hodgson,; Toshfumi Hotchi, Michael Spears, Douglas P. Sullivan, and Duo Wang; Apte, Michael; Apte, Michael G.; Norman, Bourassa; Faulkner, David; Hodgson, Alfred T.; Hotchi, Toshfumi; Spears, Michael; Sullivan, Douglas P.; Wang, Duo

2008-04-04T23:59:59.000Z

332

Computational Study on Thermal Properties of HVAC System with Building Structure Thermal Storage  

E-Print Network (OSTI)

Building structure thermal storage (BSTS) HVAC systems can store heat during nighttime thermal storage operation (nighttime operation hours) by using off-peak electricity and release it in the daytime air-conditioning operation (daytime operation hours) by utilizing a large amount of the thermal capacity of building structures such as beams, columns and floors composed of concrete. These BSTS systems have recently been considered as one method for leveling hourly electricity demands for HVAC on a day-to-day basis. Through a simulation using a model developed with experimental data, this paper describes how various factors for the design and operation of a BSTS quantitatively affect the charge/discharge performances of a HVAC system. As a result, the following was revealed: the thermal performance of the system is strongly influenced by the daily heat storage operation hours, supply air volume and supply air temperature during the nighttime operation hours, stored heat caused the total daytime cooling extraction to decrease by 11% to 58% and the daily total cooling extraction through nighttime to daytime to increase by 4% to 17% compared with the values of non- thermal storage HVAC system.

Sato, Y.; Sagara, N.; Ryu, Y.; Maehara, K.; Nagai, T.

2007-01-01T23:59:59.000Z

333

Building Technologies Office: HVAC and Water Heater Field Tests Research  

NLE Websites -- All DOE Office Websites (Extended Search)

HVAC and Water Heater HVAC and Water Heater Field Tests Research Project to someone by E-mail Share Building Technologies Office: HVAC and Water Heater Field Tests Research Project on Facebook Tweet about Building Technologies Office: HVAC and Water Heater Field Tests Research Project on Twitter Bookmark Building Technologies Office: HVAC and Water Heater Field Tests Research Project on Google Bookmark Building Technologies Office: HVAC and Water Heater Field Tests Research Project on Delicious Rank Building Technologies Office: HVAC and Water Heater Field Tests Research Project on Digg Find More places to share Building Technologies Office: HVAC and Water Heater Field Tests Research Project on AddThis.com... About Take Action to Save Energy Partner with DOE Activities Appliances Research

334

Mapping Hvac Systems for Simulation In EnergyPlus  

NLE Websites -- All DOE Office Websites (Extended Search)

Mapping Hvac Systems for Simulation In EnergyPlus Title Mapping Hvac Systems for Simulation In EnergyPlus Publication Type Conference Paper LBNL Report Number LBNL-5565E Year of...

335

Recovery Act-Funded HVAC projects | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

HVAC projects Recovery Act-Funded HVAC projects The U.S. Department of Energy was allocated funding from the American Recovery and Reinvestment Act to conduct research into...

336

Issue #3: HVAC Proper Installation Energy Savings: Over-Promising...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

3: HVAC Proper Installation Energy Savings: Over-Promising or Under-Delivering? Issue 3: HVAC Proper Installation Energy Savings: Over-Promising or Under-Delivering? What energy...

337

Modeling and simulation of HVAC Results in EnergyPlus  

NLE Websites -- All DOE Office Websites (Extended Search)

Modeling and simulation of HVAC Results in EnergyPlus Title Modeling and simulation of HVAC Results in EnergyPlus Publication Type Journal Article LBNL Report Number LBNL-5564E...

338

Floor-supply displacement ventilation system  

E-Print Network (OSTI)

Research on indoor environments has received more attention recently because reports of symptoms and other health complaints related to indoor environments have been increasing. Heating, ventilating, and air-conditioning ...

Kobayashi, Nobukazu, 1967-

2001-01-01T23:59:59.000Z

339

Liquid ventilation  

E-Print Network (OSTI)

For 350 million years, fish have breathed liquid through gills. Mammals evolved lungs to breathe air. Rarely, circumstances can occur when a mammal needs to `turn back the clock' to breathe through a special liquid medium. This is particularly true if surface tension at the air-liquid interface of the lung is increased, as in acute lung injury. In this condition, surface tension increases because the pulmonary surfactant system is damaged, causing alveolar collapse, atelectasis, increased right-to-left shunt and hypoxaemia. 69 The aims of treatment are: (i) to offset increased forces causing lung collapse by applying mechanical ventilation with PEEP; (ii) to decrease alveolar surface tension with exogenous surfactant; (iii) to eliminate the air-liquid interface by filling the lung with a fluid in

U. Kaisers; K. P. Kelly; T. Busch

2003-01-01T23:59:59.000Z

340

Indoor Air Quality Impacts of Residential HVAC Systems ...  

Science Conference Proceedings (OSTI)

Page 1. NISTIR 5559 Indoor Air Quality Impacts of Residential HVAC Systems Phase 11.AReport: Baseline and Preliminary Simulations ...

1997-09-03T23:59:59.000Z

Note: This page contains sample records for the topic "hvac heating ventilation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

PERFORMANCE OF RESIDENTIAL AIR-TO-AIR HEAT EXCHANGERS: TEST METHODS AND RESULTS  

E-Print Network (OSTI)

Presenting Test Results Heat Exchanger Descriptions and Testof Residential Heat Exchangers Conclusions . . . . . . . .ventilation testing heat exchangers. system, a heat

Fisk, William J.

2013-01-01T23:59:59.000Z

342

Meeting Residential Ventilation Standards Through Dynamic Control...  

NLE Websites -- All DOE Office Websites (Extended Search)

Meeting Residential Ventilation Standards Through Dynamic Control of Ventilation Systems Title Meeting Residential Ventilation Standards Through Dynamic Control of Ventilation...

343

Evaluating Opportunities For Increased HVAC Energy Efficiency For A Ryerson University Building With eQuest Energy Modeling.  

E-Print Network (OSTI)

??Energy used by primary and secondary Heating Ventilation and Air Conditioning systems in post-secondary schools can account for a significant share of the total energy… (more)

Khemet, Bomani A.

2012-01-01T23:59:59.000Z

344

Long Range Passive UHF RFID System Using HVAC Ducts  

E-Print Network (OSTI)

INVITED P A P E R Long Range Passive UHF RFID System Using HVAC Ducts To provide a potential communications channel, HVAC ducts can function as electromagnetic waveguides; a 30-m read range has been-conditioning (HVAC) ducts as a potential communication channel between passive ultrahigh-frequency (UHF) radio

Hochberg, Michael

345

Atmospheric Environment 41 (2007) 31513160 Ozone removal by HVAC filters  

E-Print Network (OSTI)

Atmospheric Environment 41 (2007) 3151­3160 Ozone removal by HVAC filters P. Zhao, J.A. Siegel�, R May 2006; accepted 14 June 2006 Abstract Residential and commercial HVAC filters that have been loaded of the relative importance of HVAC filters as a removal mechanism for ozone in residential and commercial

Siegel, Jeffrey

346

An update on acoustics designs for HVAC (Engineering) K. Marriott  

E-Print Network (OSTI)

An update on acoustics designs for HVAC (Engineering) K. Marriott IOA, 29a Ashburton Road, Croydon and Air Conditioning (HVAC) engineer is to engineer ways for keeping these factors under control the HVAC engineer's environmental requirements while minimizing noise generated in the process considering

Paris-Sud XI, Université de

347

MATERIALS AND INFORMATION FLOWS FOR HVAC DUCTWORK FABRICATION AND SITE  

E-Print Network (OSTI)

MATERIALS AND INFORMATION FLOWS FOR HVAC DUCTWORK FABRICATION AND SITE INSTALLATION Matt Holzemer,1, and air-conditioning (HVAC) systems requires a set of complex activities and handoffs between multiple architecture-, engineering-, and construction practitioners. This paper highlights one part of the HVAC

Tommelein, Iris D.

348

SMUD's HVAC Programs Ravi Patel-Program Planning  

E-Print Network (OSTI)

1 SMUD's HVAC Programs 5-7-13 Ravi Patel- Program Planning Bruce Baccei- R&D #12;SMUD's Residential contractors trained and BPI certified ­ Majority were pushing only HVAC; now driving the HPP · Program encourages more HVAC replacements to occur through HPP ­ Move away from stand alone programs ­ Start

California at Davis, University of

349

Continued on next page A letter explaining the 2005 HVAC  

E-Print Network (OSTI)

Continued on next page A letter explaining the 2005 HVAC Change-out to consumers is available this bulletin, or downloaded from the 2005 HVAC Change out Information website at: www.energy.ca.gov/title24 duct sealing requirements for HVAC change-outs in existing homes become effective October 1, 2005

350

Proceedings: Indoor Air 2005 OZONE REMOVAL BY RESIDENTIAL HVAC FILTERS  

E-Print Network (OSTI)

Proceedings: Indoor Air 2005 2366 OZONE REMOVAL BY RESIDENTIAL HVAC FILTERS P Zhao1,2 , JA Siegel1, Austin, Texas 78758, USA ABSTRACT HVAC filters have a significant influence on indoor air quality% for Filter #2 at a face velocity of 0.81 cm/s. The potential for HVAC filters to affect ozone concentrations

Siegel, Jeffrey

351

Occupancy Based Demand Response HVAC Control Strategy Varick L. Erickson  

E-Print Network (OSTI)

proposes an HVAC control strategy based on occupancy prediction and real time occupancy monitoring via simulation model. We dis- cuss the building parameters and the HVAC control strate- gies used for the energyOccupancy Based Demand Response HVAC Control Strategy Varick L. Erickson University of California

Cerpa, Alberto E.

352

A PDI for your HVAC System  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

8/3/2012 Technical Approach Develop a PDI for HVAC PDI focus is on Inspecting Installation - a $10 Chinese sweatshop t-shirt gets a QA/QC sticker, why not a $10k HVAC system? Develop & require diagnostics that confirm good installations: - Air flow, duct leakage, refrigerant charge, delivered temperatures, system pressures, filter requirements, fan power, noise - On board diagnostics (OBD) for flow, pressures, fan power, charge Make it a warranty requirement, code requirement, permit requirement, etc. Recommended Guidance Develop the PDI checklist and label (include target and system test results) - External Tests: duct leaks - Internal Tests: OBD for system pressures, air flow, charge, fan power - Labels: Certify tight equipment

353

BFRL: HVAC&R - Publications  

Science Conference Proceedings (OSTI)

... For the wavy and lanced finned evaporators in cross-parallel flow, capacity dropped ... the influence of tube-to-tube heat transfer on capacity ...

354

BFRL: HVAC&R Publications  

Science Conference Proceedings (OSTI)

... Survey of HSPF and Heating Capacity Ratings for ICM Mixed Systems Relative to OEM Mixed Systems and Highest Sales Volume Tested ...

355

BFRL: HVAC&R - Publications  

Science Conference Proceedings (OSTI)

... and commercialization in 1936, R-22 has been applied in systems ranging from the smallest window air conditioners to the largest chillers and heat ...

356

Demand Controlled Ventilation and Classroom Ventilation  

NLE Websites -- All DOE Office Websites (Extended Search)

3 3 Authors Fisk, William J., Mark J. Mendell, Molly Davies, Ekaterina Eliseeva, David Faulkner, Tienzen Hong, and Douglas P. Sullivan Publisher Lawrence Berkeley National Laboratory City Berkeley Keywords absence, building s, carbon dioxide, demand - controlled ventilation, energy, indoor air quality, schools, ventilation Abstract This document summarizes a research effort on demand controlled ventilation and classroom ventilation. The research on demand controlled ventilation included field studies and building energy modeling. Major findings included:  The single-location carbon dioxide sensors widely used for demand controlled ventilation frequently have large errors and will fail to effectively control ventilation rates (VRs).  Multi-location carbon dioxide measurement systems with more expensive sensors connected to multi-location sampling systems may measure carbon dioxide more accurately.

357

Status of Data Collection Efforts  

Science Conference Proceedings (OSTI)

... Tenant design standards manuals for structural; architectural; heating, ventilating, and air-conditioning (HVAC); fire protection; plumbing; electrical ...

2011-08-12T23:59:59.000Z

358

Key Findings of NIST's June 2004 Progress Report on the ...  

Science Conference Proceedings (OSTI)

... HVAC (heating, ventilation, and air-conditioning) ductwork was a major path for vertical smoke spread in the buildings. ...

2010-10-05T23:59:59.000Z

359

NIST Tech Beat - June 8, 2007  

Science Conference Proceedings (OSTI)

... spaces such as lobbies, system shutdown and purge cycles, and automated heating, ventilating and air-conditioning (HVAC) operational changes ...

360

www.eia.gov  

U.S. Energy Information Administration (EIA)

... not consumption specifically for that particular end use. HVAC = Heating, Ventilation, and Air Conditioning. Due to rounding, ...

Note: This page contains sample records for the topic "hvac heating ventilation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Table E3. Electricity Consumption (Btu) by End Use for Non ...  

U.S. Energy Information Administration (EIA)

Notes: Due to rounding, data may not sum to totals. HVAC = Heating, Ventilation, and Air Conditioning. Source: Energy Information Administration, ...

362

ENERGY-EFFICIENT NEW COMMERCIAL BUILDINGS IN THE NORTHWEST REGION: A COMPILATION OF MEASURED DATA  

E-Print Network (OSTI)

daylighting, Heating, Ventilation, and Air Conditioning (HVAC) system(systems. Seven buildings have some earth berming; eleven have daylighting.

Piette, M.A.

2010-01-01T23:59:59.000Z

363

VENTILATION NEEDS DURING CONSTRUCTION  

Science Conference Proceedings (OSTI)

The purpose of this analysis is to determine ventilation needs during construction and development of the subsurface repository and develop systems to satisfy those needs. For this analysis, construction is defined as pre-emplacement excavation and development is excavation that takes place simultaneously with emplacement. The three options presented in the ''Overall Development and Emplacement Ventilation Systems'' analysis (Reference 5.5) for development ventilation will be applied to construction ventilation in this analysis as well as adding new and updated ventilation factors to each option for both construction and development. The objective of this analysis is to develop a preferred ventilation system to support License Application Design. The scope of this analysis includes: (1) Description of ventilation conditions; (2) Ventilation factors (fire hazards, dust control, construction logistics, and monitoring and control systems); (3) Local ventilation alternatives; (4) Global ventilation options; and (5) Evaluation of options.

C.R. Gorrell

1998-07-23T23:59:59.000Z

364

Hysteresis effects in hybrid building ventilation  

E-Print Network (OSTI)

radiation, external wind forcing and internal heat gains e.g. due to electrical equipment or building chloride, etc. Developing world: By-products of cooking or heating fires Ghiaus & Allard (2005) · Exposure-breeze, displacement ventilation dissipate internal heat gains e.g. from kitchen stove · Wintertime: Spaces filled

Flynn, Morris R.

365

The integration of water loop heat pump and building structural thermal storage systems  

SciTech Connect

Many commercial buildings need heat in one part and, at the same time, cooling in another part. Even more common is the need for heating during one part of the day and cooling during another in the same spaces. If that energy could be shifted or stored for later use, significant energy might be saved. If a building's heating and cooling subsystems could be integrated with the building's structural mass and used to collect, store, and deliver energy, the energy might be save cost-effectively. To explore this opportunity, researchers at the Pacific Northwest Laboratory (PNL) examined the thermal interactions between the heating, ventilating, and air-conditioning (HVAC) system and the structure of a commercial building. Computer models were developed to simulate the interactions in an existing building located in Seattle, Washington, to determine how these building subsystems could be integrated to improve energy efficiency. The HVAC subsystems in the existing building were modeled. These subsystems consist of decentralized water-source heat pumps (WSHP) in a closed water loop, connected to cooling towers for heat rejection during cooling mode and boilers to augment heating. An initial base case'' computer model of the Seattle building, as-built, was developed. Metered data available for the building were used to calibrate this model to ensure that the analysis would provide information that closely reflected the operation of a real building. The HVAC system and building structure were integrated in the model using the concrete floor slabs as thermal storage media. The slabs may be actively charged during off-peak periods with the chilled water in the loop and then either actively or passively discharged into the conditioned space during peak periods. 21 refs., 37 figs., 17 tabs.

Marseille, T.J.; Schliesing, J.S.

1991-10-01T23:59:59.000Z

366

The integration of water loop heat pump and building structural thermal storage systems  

DOE Green Energy (OSTI)

Many commercial buildings need heat in one part and, at the same time, cooling in another part. Even more common is the need for heating during one part of the day and cooling during another in the same spaces. If that energy could be shifted or stored for later use, significant energy might be saved. If a building's heating and cooling subsystems could be integrated with the building's structural mass and used to collect, store, and deliver energy, the energy might be save cost-effectively. To explore this opportunity, researchers at the Pacific Northwest Laboratory (PNL) examined the thermal interactions between the heating, ventilating, and air-conditioning (HVAC) system and the structure of a commercial building. Computer models were developed to simulate the interactions in an existing building located in Seattle, Washington, to determine how these building subsystems could be integrated to improve energy efficiency. The HVAC subsystems in the existing building were modeled. These subsystems consist of decentralized water-source heat pumps (WSHP) in a closed water loop, connected to cooling towers for heat rejection during cooling mode and boilers to augment heating. An initial base case'' computer model of the Seattle building, as-built, was developed. Metered data available for the building were used to calibrate this model to ensure that the analysis would provide information that closely reflected the operation of a real building. The HVAC system and building structure were integrated in the model using the concrete floor slabs as thermal storage media. The slabs may be actively charged during off-peak periods with the chilled water in the loop and then either actively or passively discharged into the conditioned space during peak periods. 21 refs., 37 figs., 17 tabs.

Marseille, T.J.; Schliesing, J.S.

1991-10-01T23:59:59.000Z

367

Verifying energy savings with minimal metered data: The Hunter heat pump analysis  

SciTech Connect

In November 1992, Hunter Army Air Field (AAF) completed the installation of 489 air-source heat pumps -- a new heat pump and air-handling unit for each residence. The air-source heat pumps replaced older, less efficient, air-conditioning systems, fuel oil-fired furnaces, and fan coil units. Hunter AAF originally contacted to upgrade the old family housing heating, ventilating, and air-conditioning (HVAC) systems with high efficiency air-conditioning systems and natural gas furnaces, but an alternative proposal and following energy studies indicated that heat pumps were a more life-cycle cost-effective alternative. Six months after the heat pumps were installed, Hunter`s energy bills appeared to be increasing, not decreasing as expected. In early 1994, Pacific Northwest Laboratory` (PNL) began an analysis to determine if there were any energy savings resulting from the heat pump installation as predicted by previous energy studies. The problem is that the HVAC systems are not specifically submetered to support verifying the resulting energy savings and, as is the case with most federal facilities, even the homes are not individually metered. Savings verification needed to be accomplished with die existing and available metered data. This data consisted primarily of monthly electric submeter readings from the two housing subdivision meters, historical fuel oil delivery records for family housing, and monthly base-wide electric bills. The objective of the study is to verify the change in energy consumption in family housing and, to the extent possible, identify how much of the change in consumption is attributable to the new HVAC system and how much is probably attributable to other factors, such as the weather.

Parker, S.A.

1995-03-01T23:59:59.000Z

368

Building Technologies Office: Space Heating and Cooling Research  

NLE Websites -- All DOE Office Websites (Extended Search)

(HVAC) and refrigeration. DOE is conducting research into integration of optimized heat exchanger designs into new products and space conditioning systems. DOE projects...

369

Air Distribution Effectiveness for Different MechanicalVentilation Systems  

SciTech Connect

The purpose of ventilation is to dilute indoor contaminants that an occupant is exposed to. In a multi-zone environment such as a house, there will be different dilution rates and different source strengths in every zone. Most US homes have central HVAC systems, which tend to mix conditions between zones. Different types of ventilation systems will provide different amounts of dilution depending on the effectiveness of their air distribution systems and the location of sources and occupants. This paper will report on work being done to both model the impact of different systems and measurements using a new multi-tracer measurement system that has the capacity to measure not only the flow of outdoor air to each zone, but zone-to-zone transport. The ultimate objective of this project is to determine the effectiveness of different systems so that appropriate adjustments can be made in residential ventilation standards such as ASHRAE Standard 62.2.

Sherman, Max H.; Walker, Iain S.

2007-08-01T23:59:59.000Z

370

Heat recovery subsystem and overall system integration of fuel cell on-site integrated energy systems. Final report  

DOE Green Energy (OSTI)

The overall objective of this project was to determine the best HVAC (heating, ventilating and air conditioning) subsystem to interface with the Engelhard fuel cell system for application in commercial buildings. To accomplish this objective, the effects of several system and site specific parameters on the economic feasibility of fuel cell/HVAC systems were investigated. The fuel cell system provides electricity for an electric water chiller and for domestic electric needs. Supplemental electricity is purchased from the utility if needed. An excess of electricity generated by the fuel cell system can be sold to the utility. The fuel cell system also provides thermal energy which can be used for absorption cooling, space heating and domestic hot water. Thermal storage can be incorporated into the system. Thermal energy is also provided by an auxiliary boiler if needed to supplement the fuel cell system output. Fuel cell/HVAC systems were analyzed with the TRACE computer program. TRACE is an energy and economic analysis program that has been developed by The Trane Company. Results are detailed. (WHK)

Mougin, L.J.

1983-07-15T23:59:59.000Z

371

Validation of a Building Simulation Tool Using Field Data for Three Identical Configuration Full-Serve Restaurants Using Different HVAC Systems  

E-Print Network (OSTI)

A new building application for a pre-existing HVAC software tool which calculates the benefits of desiccant-assisted HVAC equipment versus the performance of a standard vapor-compression system is used to model the monitored results, see Yborra and Spears (2000), for three full-service restaurants. A standard vapor-compression system, an enthalpy assisted vapor-compression system, and a desiccant-assisted vapor-compression system are compared. The vapor-compression portion of each system is comprised of three rooftop units, specifications for each may be found in Yborra and Spears, "Field- Evaluation of Alternative HVAC Strategies to Meet Ventilation, Comfort, and Humidity Control Criteria at Three Full-Serve Restaurants". The software tool uses DOE 2.1E as a calculation engine which runs in the background. Previously, the software tool could model two different hotel configurations, a quickserve restaurant, a supermarket, a retail store, an ice arena, a school, a movie theater, a nursing home and a hospital. With the larger eating area, the full-serve restaurant had the capacity for sensible or enthalpy heat recovery from the exhausted air in the sit-down area. Quick-Serve Restaurants (QSR's) were precluded from these energy saving devices as the exhausted air was heavily laden with grease. Still, even with the kitchen exhausts facing away from the rooftop unit (RTU) intakes, the enthalpy wheels showed noticeable loading from grease. As the field monitoring was performed near Philadelphia, PA, National Renewable Energy Laboratory (NREL) hour-by-hour bin TMY2 meteorological data was used for Philadelphia to model the annual outdoor conditions experienced by each site. Output was provided in the form of humidity bins, monthly energy usage and cost, as well as total annual gas and electric costs. As the fill-serve restaurants were located on the North-Eastem region of the United States, patron comfort was of greater importance to management than annual energy cost savings. Once the model results were determined to properly reflect those of the case studies, the different building equipment types were "moved" around the United States by choosing different bin weather data sets corresponding to Chicago, IL, Atlanta, GA, and Houston, TX. While the default energy rates available in the program are 4 years old, the economic results provide a sound cost comparison.

Brillhart, P. L.; Worek, W. M.

2000-01-01T23:59:59.000Z

372

Page not found | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Air Handling Unit Heating, Ventilation, and Air Conditioning (HVAC)-AHU-20984 (HVAC-FAN-E21) with HVAC-AHU-E-1, Building 773-A, Section E Southeast Roof CX(s) Applied: B1.3...

373

South Carolina | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Air Handling Unit Heating, Ventilation, and Air Conditioning (HVAC)-AHU-20984 (HVAC-FAN-E21) with HVAC-AHU-E-1, Building 773-A, Section E Southeast Roof CX(s) Applied: B1.3...

374

CX-004817: Categorical Exclusion Determination | Department of...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Air Handling Unit Heating, Ventilation, and Air Conditioning (HVAC)-AHU-20984 (HVAC-FAN-E21) with HVAC-AHU-E-1, Building 773-A, Section E Southeast Roof CX(s) Applied: B1.3...

375

COPOLAN: non-invasive occupancy profiling for preliminary assessment of HVAC fixed timing strategies  

Science Conference Proceedings (OSTI)

Nowadays, control of heating, cooling and ventilation equipment operation is mainly achieved via timers with fixed setback schedules, configured using experience and standard models of space occupancy. Applying generic timing strategies is however rarely ... Keywords: electricity, local area network, occupancy

Anthony Schoofs; Declan T. Delaney; Gregory M. P. O'Hare; Antonio G. Ruzzelli

2011-11-01T23:59:59.000Z

376

Real-Time Measurement of Rates of Outdoor Airflow into HVAC Systems: A Field Study of Three Technologies  

E-Print Network (OSTI)

to determine flow resistance of HVAC ducts and fittings.W. 2003. Outdoor airflow into HVAC systems: an evaluation ofof outdoor airflow into HVAC systems. Lawrence Berkeley

Fisk, William J.; Sullivan, Douglas P.; Faulkner, David

2005-01-01T23:59:59.000Z

377

Pulverized Coal OxyCombustion Power Plants  

NLE Websites -- All DOE Office Websites (Extended Search)

HHV Higher heating value hp Horsepower HP High pressure HRSG Heat Recovery Steam Generator HSS Heat stable salts HVAC Heating, ventilating, and air conditioning HWT Hot water...

378

Design of Control Systems for HVAC Applications  

E-Print Network (OSTI)

The design and application of temperature control systems on a commercial building will bring the question to mind: Should the system be Pneumatic? Should it be Electronic? There is concern as to which system will be more appropriate to a certain project. With cost, maintenance, performance, dependability, and the cost of energy as a main concern of owners, the temperature control system has become an important part of efficient utilization of energy. Application of temperature control systems to heating, ventilating, and air conditioning systems has become an integral part of energy management. The first phase of the program will address the problem of selection of a type of system that will be cost and energy efficient, with a minimum maintenance program. One area to be covered will be the technician and his ability to service the temperature control systems, in addition to information on the schools and technical training. The availability of trained and experienced service technicians creates a major problem for remote towns and communities. Control systems are integrated to energy management systems. Without proper maintenance the energy savings will not perform at their design level. A sub-topic on up-to-date temperature control systems with retrofit needs will he included in the presentation.

Smith, A. L.

1984-01-01T23:59:59.000Z

379

Ventilation | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Ventilation Ventilation Ventilation May 7, 2012 - 2:49pm Addthis This ventilation system in a tight, energy-efficient home ensures good indoor air quality. | Photo courtesy of ©iStockphoto.com/brebca. This ventilation system in a tight, energy-efficient home ensures good indoor air quality. | Photo courtesy of ©iStockphoto.com/brebca. What does this mean for me? After you've reduced air leakage in your home, adequate ventilation is critical for health and comfort. Depending on your climate, there are a number of strategies to ventilate your home. Ventilation is very important in an energy-efficient home. Air sealing techniques can reduce air leakage to the point that contaminants with known health effects such as formaldehyde, volatile organic compounds, and radon

380

The Ventilated Ocean  

Science Conference Proceedings (OSTI)

Adiabatic theories of ocean circulation and density structure have a long tradition, from the concept of the ventilated thermocline to the notion that deep ocean ventilation is controlled by westerly winds over the Southern Ocean. This study ...

Patrick Haertel; Alexey Fedorov

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hvac heating ventilation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Ventilation | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Ventilation Ventilation Ventilation May 7, 2012 - 2:49pm Addthis This ventilation system in a tight, energy-efficient home ensures good indoor air quality. | Photo courtesy of ©iStockphoto.com/brebca. This ventilation system in a tight, energy-efficient home ensures good indoor air quality. | Photo courtesy of ©iStockphoto.com/brebca. What does this mean for me? After you've reduced air leakage in your home, adequate ventilation is critical for health and comfort. Depending on your climate, there are a number of strategies to ventilate your home. Ventilation is very important in an energy-efficient home. Air sealing techniques can reduce air leakage to the point that contaminants with known health effects such as formaldehyde, volatile organic compounds, and radon

382

Key Factors in Displacement Ventilation Systems for Better IAQ  

E-Print Network (OSTI)

This paper sets up a mathematical model of three-dimensional steady turbulence heat transfer in an air-conditioned room of multi-polluting heat sources. Numerical simulation helps identify key factors in displacement ventilation systems that affect air-quality in rooms of multi-polluting heat sources. Results show that it is very important to determine the suitable air-intemperature , air-inflow, and heat source quantity and dispersion, to obtain better displacement ventilation results.

Wang, X.; Chen, J.; Li, Y.; Wang, Z.

2006-01-01T23:59:59.000Z

383

IFC HVAC interface to EnergyPlus - A case of expanded interoperability for energy simulation  

E-Print Network (OSTI)

D. Sucic and P. Xu. 2002. HVAC Component Data Modeling Using2001. BS-8 project: IFC HVAC extension schemata. http://IFC HVAC INTERFACE TO ENERGYPLUS – A CASE OF EXPANDED

Bazjanac, Vladimir; Maile, Tobias

2004-01-01T23:59:59.000Z

384

Uncertainties in Achieving Energy Savings from HVAC Maintenance Measures in the Field  

E-Print Network (OSTI)

Uncertainties in Achieving Energy Savings from HVAC Maintenance Measures in the Field Kristin Group, Davis, CA, USA 4 Southern California Edison, Irwindale, CA, USA ABSTRACT HVAC maintenance utilities across the nation to include HVAC maintenance measures in energy efficiency programs

California at Davis, University of

385

Analysis of a hybrid UFAD and radiant hydronic slab HVAC system  

E-Print Network (OSTI)

Air- Conditioning Engineers HVAC & R Research, vol. 50, Sep.and radiant hydronic slab HVAC system.   Paul RAFTERY a,* ,of a novel integrated HVAC system. This system combines an

Raftery, Paul; Lee, Kwang Ho; Webster, Thomas; Bauman, Fred

2011-01-01T23:59:59.000Z

386

Report on HVAC option selections for a relocatable classroom energy and indoor environmental quality field study  

E-Print Network (OSTI)

LBNL- 49026 Report on HVAC Option Selections for aTable 3. High performance HVAC system filter selectionDrop ("H 2 O) Appendix A – RC HVAC working drawings. Figure

2001-01-01T23:59:59.000Z

387

A systems approach to retrofitting residential HVAC systems  

E-Print Network (OSTI)

HVAC System. LBNL 53444. Wendt, R.L. , Ternes, M.P. , O’realized. Other guides (e.g. , Wendt et al. (1997)) are more

McWilliams, J.A.; Walker, I.S.

2004-01-01T23:59:59.000Z

388

Columbia Water & Light- HVAC and Lighting Efficiency Rebates  

Energy.gov (U.S. Department of Energy (DOE))

Columbia Water & Light (CWL) offers rebates to its commercial and industrial customers for the purchase of high efficiency HVAC installations and efficient lighting. Incentives for certain...

389

Fault Detection and Diagnosis in Building HVAC Systems.  

E-Print Network (OSTI)

??Building HVAC systems account for more than 30% of annual energy consumption in United States. However, it has become apparent that only in a small… (more)

Najafi, Massieh

2010-01-01T23:59:59.000Z

390

New developments in noise control for HVAC systems.  

Science Conference Proceedings (OSTI)

The HVAC equipment industry is not known for rapid change. Although control systems have improved rapidly over the past few years

Timothy J. Foulkes

1996-01-01T23:59:59.000Z

391

System Optimization - The Global Approach to HVAC Control  

E-Print Network (OSTI)

System Optimization is a new approach to HVAC control as implemented by Energy Management Control Systems. System Optimization is defined as electronic building control strategies which treat a building's HVAC components as a complete energy-efficient and coordinated system. Trends in the development of HVAC control strategies are briefly discussed. An example which differentiates between conventional and System Optimization approaches is used to illustrate this new approach. The example discusses aspects of cooling season operation for a typical HVAC system. The paper concludes with four basic principles of System Optimization which are essential for effective control of a building environment.

Thielman, D. E.

1984-01-01T23:59:59.000Z

392

NREL Delivers In-Home HVAC Efficiency Testing Solutions (Fact...  

NLE Websites -- All DOE Office Websites (Extended Search)

Delivers In-Home HVAC Efficiency Testing Solutions Researchers at the National Renewable Energy Laboratory (NREL) have recently developed two simple in-home efficiency test methods...

393

Federal Energy Management Program: New and Underutilized Heating,  

NLE Websites -- All DOE Office Websites (Extended Search)

Heating, Ventilation, and Air Conditioning Technologies to Heating, Ventilation, and Air Conditioning Technologies to someone by E-mail Share Federal Energy Management Program: New and Underutilized Heating, Ventilation, and Air Conditioning Technologies on Facebook Tweet about Federal Energy Management Program: New and Underutilized Heating, Ventilation, and Air Conditioning Technologies on Twitter Bookmark Federal Energy Management Program: New and Underutilized Heating, Ventilation, and Air Conditioning Technologies on Google Bookmark Federal Energy Management Program: New and Underutilized Heating, Ventilation, and Air Conditioning Technologies on Delicious Rank Federal Energy Management Program: New and Underutilized Heating, Ventilation, and Air Conditioning Technologies on Digg Find More places to share Federal Energy Management Program: New and

394

Plutonium Finishing Plant (PFP) HVAC System Component Index  

Science Conference Proceedings (OSTI)

The Plutonium Finishing Plant (PFP) WAC System includes sub-systems 25A through 25K. Specific system boundaries and justifications are contained in HNF-SD-CP-SDD-005, ''Definition and Means of Maintaining the Ventilation System Confinement Portion of the PFP Safety Envelope.'' The procurement requirements associated with the system necessitates procurement of some system equipment as Commercial Grade Items in accordance with HNF-PRO-268, ''Control of Purchased Items and Services.'' This document lists safety class and safety significant components for the Heating Ventilation Air Conditioning and specifies the critical characteristics for Commercial Grade Items, as required by HNF-PRO-268 and HNF-PRO-1819. These are the minimum specifications that the equipment must meet in order to properly perform its safety function. There may be several manufacturers or models that meet the critical characteristics for any one item.

DICK, J.D.

2000-02-28T23:59:59.000Z

395

Design of compartmental silencer for HVAC system  

Science Conference Proceedings (OSTI)

Air conditioning and ventilation system is the major noise sources in the commercial building. Noise will be propagated from fan and through the associated ductwork into working area. In order to reduce the noise transmitted

Y. H. Chan; Y. S. Choy; R. C. K. Leung

2012-01-01T23:59:59.000Z

396

SIMULATION AND EXPERIMENTAL VALIDATION OF AIRBORNE AND STRUCTURE-BORNE NOISE TRANSMISSION IN HVAC PLENUMS.  

E-Print Network (OSTI)

??This research demonstrates the usage of numerical acoustics to model sound and vibrational energy propagation in HVAC ducts and plenums. Noise and vibration in HVAC… (more)

Ramalingam, Srinivasan

2012-01-01T23:59:59.000Z

397

Market assessment for active solar heating and cooling products. Progress report  

DOE Green Energy (OSTI)

Progress is reported on a comprehensive evaluation of the market for active solar heating and cooling products focusing on the attributes and behavior of HVAC decision makers. (MHR)

Not Available

1980-02-21T23:59:59.000Z

398

This paper has been downloaded from the Building and Environmental Thermal Systems Research Group at Oklahoma State University (www.hvac.okstate.edu)  

E-Print Network (OSTI)

systems that circulate a heated fluid through pipes embedded in a bridge deck or roadway may be used such a system is determining the required heat flux. Current guidance in the ASHRAE HVAC Applications Handbook-dimensional effects, such as pipe spacing and bottom losses are clearly important, but neglected by the procedure used

399

New Air Cleaning Strategies for Reduced Commercial Building Ventilation Energy ? FY11 Final Report  

Science Conference Proceedings (OSTI)

The research carried out in this project focuses on developing novel volatile organic compounds (VOCs) air cleaning technologies needed to enable energy-saving reductions in ventilation rates. we targeted a VOC air cleaning system that could enable a 50% reduction in ventilation rates. In a typical commercial HVAC system that provides a mixture of recirculated and outdoor air, a VOC air cleaner in the supply airstream must have a 15% to 20% VOC removal efficiency to counteract a 50% reduction in outdoor air supply.

Sidheswaran, Meera; Destaillats, Hugo; Cohn, Sebastian; Sullivan, Douglas P.; Fisk, William J.

2011-10-31T23:59:59.000Z

400

HVAC & Building Management Control System Energy Efficiency Replacements  

SciTech Connect

The project objective was the replacement of an aging, un-repairable HVAC system which has grown inefficient and a huge energy consumer with low energy and efficient HVAC units, and installation of energy efficient building control technologies at City's YMCA Community Center.

Hernandez, Adriana

2012-09-21T23:59:59.000Z

Note: This page contains sample records for the topic "hvac heating ventilation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Industrial HVAC Air-to-Air Energy Recovery Retrofit Economics  

E-Print Network (OSTI)

Retrofitting air-to-air energy recovery equipment is relatively simply to design and easy to install. Additionally, HVAC energy recovery is almost risk free when compared to process retrofit. Life cycle cost analysis is the best way to illustrate the economic attractiveness of retrofitting HVAC industrial energy recovery equipment.

Graham, E. L.

1980-01-01T23:59:59.000Z

402

Building Science - Ventilation  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Ventilation Ventilation Joseph Lstiburek, Ph.D., P.Eng, ASHRAE Fellow www.buildingscience.com Build Tight - Ventilate Right Building Science Corporation Joseph Lstiburek 2 Build Tight - Ventilate Right How Tight? What's Right? Building Science Corporation Joseph Lstiburek 3 Air Barrier Metrics Material 0.02 l/(s-m2) @ 75 Pa Assembly 0.20 l/(s-m2) @ 75 Pa Enclosure 2.00 l/(s-m2) @ 75 Pa 0.35 cfm/ft2 @ 50 Pa 0.25 cfm/ft2 @ 50 Pa 0.15 cfm/ft2 @ 50 Pa Building Science Corporation Joseph Lstiburek 4 Getting rid of big holes 3 ach@50 Getting rid of smaller holes 1.5 ach@50 Getting German 0.6 ach@50 Building Science Corporation Joseph Lstiburek 5 Best As Tight as Possible - with - Balanced Ventilation Energy Recovery Distribution Source Control - Spot exhaust ventilation Filtration

403

Building Energy Software Tools Directory: HVAC 1 Toolkit  

NLE Websites -- All DOE Office Websites (Extended Search)

HVAC 1 Toolkit HVAC 1 Toolkit HVAC 1 Toolkit logo. The Toolkit for Primary HVAC System Energy Calculations is a collection of thirty-eight separate subroutines and corresponding documentation that describes algorithms for predicting the performance of HVAC components. The Toolkit documentation includes thorough descriptions of the component models and solution algorithms, detailed information on the structure of the individual FORTRAN 77 routines, as well as illustrative examples of system simulations with the Toolkit routines. The Toolkit serves two purposes: modules for large-scale simulation and stand-alone component performance prediction. The Toolkit components can also be used to calculate the energy performance of a component with a dedicated driver program to provide the necessary information flow to the Toolkit routines.

404

A Fault Detection and Diagnosis Method for HVAC Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

A Fault Detection and Diagnosis Method for HVAC Systems A Fault Detection and Diagnosis Method for HVAC Systems Speaker(s): Peng Xu Date: December 2, 2002 - 12:00pm Location: Bldg. 90 There is a growing consensus that most buildings do not perform as well as intended and that faults in HVAC systems are widespread in commercial buildings. An automated fault detection and diagnosis tool for HVAC systems is being developed, based on an integrated, life-cycle, approach to commissioning and performance monitoring. The tool uses component-level HVAC equipment models implemented in the SPARK equation-based simulation environment. The models are configured using design information and component manufacturers' data and then fine-tuned to match the actual performance of the equipment by using data measured during functional tests

405

ASHRAE and residential ventilation  

E-Print Network (OSTI)

conditioning Engineers. 2001. ASHRAE, “Indoor Air QualityABOUT/IAQ_papr01.htm ASHRAE. “Standard 62.2-2003:Ventilation Requirements. ” ASHRAE Journal, pp. 51- 55, June

Sherman, Max H.

2003-01-01T23:59:59.000Z

406

Measuring Residential Ventilation  

NLE Websites -- All DOE Office Websites (Extended Search)

measured. The local exhaust flows can be measured or can meet prescriptive ducting and fan labeling requirements that use ratings provided by the Home Ventilating Institute (HVI,...

407

OBSERVE: Occupancy-Based System for Efficient Reduction of HVAC Energy  

E-Print Network (OSTI)

office build- ings [9]. This type of system is often used since it is able to heat and cool areas while - Merced {verickson,mcarreira-perpinan,acerpa}@ucmerced.edu ABSTRACT Heating, cooling and ventilation uncomfortable [13]. If not properly calibrated, these sensors can also be inaccurate [13]. Electrical loads have

Carreira-Perpiñán, Miguel Á.

408

Interdisciplinary Innovation and Vision in the HVAC  

E-Print Network (OSTI)

High energy costs in buildings are forcing the building owners, developers, fund and facility managers to find alternate energy efficiency methods while improving the indoor air quality and thus the comfort level of the room occupants. High potentials for optimizing costs can be found in the HVAC systems when calculated over the total Life-Cycle-Cost (LCC) of a building incorporating planning through to facility management. This requires an accurate plan specifying an efficient technical operating method with optimized energy cost efficiency and comfort for the room occupants. In turn, the plan should be considered in any bidding process. Multisensory equipment is an integral part of the LCC concept and should not be underestimated in its impact on energy efficiency. The possibility of customizing the requirements of the room occupants should be included in each specification of a building/room automation system. The following case study will explain how modern sensory systems can be used for investment and energy savings in various HVAC system.

Hecker, T.

2008-01-01T23:59:59.000Z

409

Simulation of residential HVAC system performance  

SciTech Connect

In many parts of North America residential HVAC systems are installed outside conditioned space. This leads to significant energy losses and poor occupant comfort due to conduction and air leakage losses from the air distribution ducts. In addition, cooling equipment performance is sensitive to air flow and refrigerant charge that have been found to be far from manufacturers specifications in most systems. The simulation techniques discussed in this paper were developed in an effort to provide guidance on the savings potentials and comfort gains that can be achieved by improving ducts (sealing air leaks) and equipment (correct air-flow and refrigerant charge). The simulations include the complex air flow and thermal interactions between duct systems, their surroundings and the conditioned space. They also include cooling equipment response to air flow and refrigerant charge effects. Another key aspect of the simulations is that they are dynamic--which accounts for cyclic losses from the HVAC system and the effect of cycle length on energy and comfort performance.

Walker, I.S.; Siegel, J.A.; Degenetais, G.

2001-05-01T23:59:59.000Z

410

Meeting Residential Ventilation Standards Through Dynamic Control of Ventilation Systems  

E-Print Network (OSTI)

Rudd. 2007. Review of residential ventilation technologies.2009. EISG Final Report: Residential Integrated VentilationDesign and Operation of Residential Cooling Systems. Proc.

Sherman, Max H.

2011-01-01T23:59:59.000Z

411

Measuring Advances in HVAC Distribution System Design  

E-Print Network (OSTI)

of this "thermal mixing", the heating and cooling loadsyear) Cooling Plant Heating Plant Fans Total Thermal Tobllthermal distribution system includes the components that carry the heating and cooling

Franconi, E.

2011-01-01T23:59:59.000Z

412

Modeling and Measurement Constraints in Fault Diagnostics for HVAC Systems Massieh Najafi1  

E-Print Network (OSTI)

Modeling and Measurement Constraints in Fault Diagnostics for HVAC Systems Massieh Najafi1 , David for determining HVAC diagnostics, methods to detect faults in HVAC systems are still generally undeveloped. Most in a substantial increase in energy use. For example, failure of an HVAC fan may prevent cool air from one

413

Best Practices for Energy Efficient Cleanrooms Efficient HVAC Systems: Variable-Speed-Drive Chillers  

E-Print Network (OSTI)

LBNL-58636 Best Practices for Energy Efficient Cleanrooms Efficient HVAC Systems: Variable Efficient Cleanrooms Efficient HVAC Water Systems: Variable-Speed-Drive Chillers Tengfang Xu Contents HVAC.................................................................................................................................... 6 #12;HVAC Water Systems Variable-Speed-Drive Chillers Summary Cleanroom energy benchmarking data

414

Why We Ventilate  

NLE Websites -- All DOE Office Websites (Extended Search)

Why We Ventilate Why We Ventilate Title Why We Ventilate Publication Type Conference Paper LBNL Report Number LBNL-5093E Year of Publication 2011 Authors Logue, Jennifer M., Phillip N. Price, Max H. Sherman, and Brett C. Singer Conference Name Proceedings of the 2011 32nd AIVC Conference and 1st Tightvent Conference Date Published October 2011 Conference Location Brussels, Belgium Keywords indoor environment department, resave, ventilation and air cleaning Abstract It is widely accepted that ventilation is critical for providing good indoor air quality (IAQ) in homes. However, the definition of "good" IAQ, and the most effective, energy efficient methods for delivering it are still matters of research and debate. This paper presents the results of work done at the Lawrence Berkeley National Lab to identify the air pollutants that drive the need for ventilation as part of a larger effort to develop a health-based ventilation standard. First, we present results of a hazard analysis that identified the pollutants that most commonly reach concentrations in homes that exceed health-based standards or guidelines for chronic or acute exposures. Second, we present results of an impact assessment that identified the air pollutants that cause the most harm to the U.S. population from chronic inhalation in residences. Lastly, we describe the implications of our findings for developing effective ventilation standards.

415

Multifamily Ventilation Retrofit Strategies  

SciTech Connect

In multifamily buildings, central ventilation systems often have poor performance, overventilating some portions of the building (causing excess energy use), while simultaneously underventilating other portions (causing diminished indoor air quality). BSC and Innova Services Corporation performed a series of field tests at a mid-rise test building undergoing a major energy audit and retrofit, which included ventilation system upgrades.

Ueno, K.; Lstiburek, J.; Bergey, D.

2012-12-01T23:59:59.000Z

416

Multifamily Ventilation - Best Practice?  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Multifamily Ventilation - Best Practice? Multifamily Ventilation - Best Practice? Dianne Griffiths April 29, 2013 Presentation Outline * Basic Objectives * Exhaust Systems * Make-up Air Systems Two Primary Ventilation Objectives 1) Providing Fresh Air - Whole-House 2) Removing Pollutants - Local Exhaust Our goal is to find the simplest solution that satisfies both objectives while minimizing cost and energy impacts. Common Solution: Align local exhaust with fresh air requirements (Ex: 25 Bath + 25 Kitchen) Exhaust-Driven Fresh Air Design * Exhaust slightly depressurizes the units * Outside air enters through leaks, cracks, or planned inlets * Widely used in the North Multifamily Ventilation Best Practice * Step 1: Understand ventilation requirements * Step 2: Select the simplest design that can

417

Whole Building Ventilation Systems  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Whole-Building Whole-Building Ventilation Systems for Existing Homes © 2011 Steven Winter Associates, Inc. All rights reserved. © 2011 Steven Winter Associates, Inc. All rights reserved. Home Performance / Weatherization  Addressing ventilation is the exception  Max tightness, e.g. BPI's "Building Airflow Standard" (BAS)  References ASHRAE 62-89  BAS = Max [0.35 ACH, 15 CFM/person], CFM50 eq.  If BD tests show natural infiltration below BAS...  Ventilation must be recommended or installed.  SO DON'T AIR SEAL TO MUCH! © 2011 Steven Winter Associates, Inc. All rights reserved. © 2011 Steven Winter Associates, Inc. All rights reserved. Ventilation Requirements Ventilation systems for existing homes that are:

418

Sensor-based demand controlled ventilation  

SciTech Connect

In most buildings, occupancy and indoor pollutant emission rates vary with time. With sensor-based demand-controlled ventilation (SBDCV), the rate of ventilation (i.e., rate of outside air supply) also varies with time to compensate for the changes in pollutant generation. In other words, SBDCV involves the application of sensing, feedback and control to modulate ventilation. Compared to ventilation without feedback, SBDCV offers two potential advantages: (1) better control of indoor pollutant concentrations; and (2) lower energy use and peak energy demand. SBDCV has the potential to improve indoor air quality by increasing the rate of ventilation when indoor pollutant generation rates are high and occupants are present. SBDCV can also save energy by decreasing the rate of ventilation when indoor pollutant generation rates are low or occupants are absent. After providing background information on indoor air quality and ventilation, this report provides a relatively comprehensive discussion of SBDCV. Topics covered in the report include basic principles of SBDCV, sensor technologies, technologies for controlling air flow rates, case studies of SBDCV, application of SBDCV to laboratory buildings, and research needs. SBDCV appears to be an increasingly attractive technology option. Based on the review of literature and theoretical considerations, the application of SBDCV has the potential to be cost-effective in applications with the following characteristics: (a) a single or small number of dominant pollutants, so that ventilation sufficient to control the concentration of the dominant pollutants provides effective control of all other pollutants; (b) large buildings or rooms with unpredictable temporally variable occupancy or pollutant emission; and (c) climates with high heating or cooling loads or locations with expensive energy.

De Almeida, A.T. [Universidade de Coimbra (Portugal). Dep. Eng. Electrotecnica; Fisk, W.J. [Lawrence Berkeley National Lab., CA (United States)

1997-07-01T23:59:59.000Z

419

Measured Air Distribution Effectiveness for Residential Mechanical Ventilation Systems  

SciTech Connect

The purpose of ventilation is dilute or remove indoor contaminants that an occupant is exposed to. In a multi-zone environment such as a house, there will be different dilution rates and different source strengths in every zone. Most US homes have central HVAC systems, which tend to mix the air thus the indoor conditions between zones. Different types of ventilation systems will provide different amounts of exposure depending on the effectiveness of their air distribution systems and the location of sources and occupants. This paper will report on field measurements using a unique multi-tracer measurement system that has the capacity to measure not only the flow of outdoor air to each zone, but zone-to-zone transport. The paper will derive seven different metrics for the evaluation of air distribution. Measured data from two homes with different levels of natural infiltration will be used to evaluate these metrics for three different ASHRAE Standard 62.2 compliant ventilation systems. Such information can be used to determine the effectiveness of different systems so that appropriate adjustments can be made in residential ventilation standards such as ASHRAE Standard 62.2.

Sherman, Max; Sherman, Max H.; Walker, Iain S.

2008-05-01T23:59:59.000Z

420

Solar ventilation preheating: FEMP fact sheet  

DOE Green Energy (OSTI)

Installing a ''solar wall'' to heat air before it enters a building, called solar ventilation preheating, is one of the most efficient ways of reducing energy costs using clean and renewable energy. A solar wall can be designed as an integral part of a new building or it can be added in a retrofit project.

Clyne, R.

1999-09-30T23:59:59.000Z

Note: This page contains sample records for the topic "hvac heating ventilation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Co-simulation for performance prediction of integrated building and HVAC systems - An analysis of solution characteristics using a two-body system  

E-Print Network (OSTI)

of innovative integrated HVAC systems in buildings, infor building envelope and HVAC systems simu- lation - WillIntegrated simulation for HVAC performance prediction: State

Trcka, Marija

2010-01-01T23:59:59.000Z

422

Fault Detection and Diagnosis in Building HVAC Systems  

E-Print Network (OSTI)

techniques for model-based FDD methods applied to vapordetection and diagnosis (FDD) has been an active area for6-17]. In building HVAC systems, FDD has received increasing

Najafi, Massieh

2010-01-01T23:59:59.000Z

423

Applications of HVAC System Utilizing Building Thermal Mass in...  

NLE Websites -- All DOE Office Websites (Extended Search)

Applications of HVAC System Utilizing Building Thermal Mass in Japan Speaker(s): Katsuhiro Miura Date: January 27, 2012 - 10:00am Location: 90-3122 Seminar HostPoint of Contact:...

424

Optimized HVAC Management Service to Enhance Demand Response  

NLE Websites -- All DOE Office Websites (Extended Search)

Optimized HVAC Management Service to Enhance Demand Response Speaker(s): John Steinberg Date: August 18, 2011 - 12:00pm Location: 90-4133 Seminar HostPoint of Contact: Janie Page...

425

Direct Digital Control for Building HVAC Systems, 2nd edition  

Science Conference Proceedings (OSTI)

From the Publisher:Direct Digital Control for Building HVAC Systems, Second Edition, is thoroughly updated and expanded to include complete coverage of the architecture of modern digital control systems, distributed intelligence networked systems, communication ...

Michael J. L. Coffin

1998-06-01T23:59:59.000Z

426

Review of Residential Low-Load HVAC Systems  

SciTech Connect

In support of the U.S. Department of Energy’s (DOE’s) Building America Program, Pacific Northwest National Laboratory (PNNL) conducted an investigation to inventory commercially available HVAC technologies that are being installed in low-load homes. The first step in this investigation was to conduct a review of published literature to identify low-load HVAC technologies available in the United States and abroad, and document the findings of existing case studies that have evaluated the performance of the identified technologies. This report presents the findings of the literature review, identifies gaps in the literature or technical understanding that must be addressed before low-load HVAC technologies can be fully evaluated, and introduces PNNL’s planned research and analysis for this project to address identified gaps and potential future work on residential low-load HVAC systems.

Brown, Scott A.; Thornton, Brian; Widder, Sarah H.

2013-09-01T23:59:59.000Z

427

DOE Convening Report on Certification of Commercial HVAC and...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Convening Report on Certification of Commercial HVAC and CRE Products, October 2, 2012 1 U.S. DEPARTMENT OF ENERGY CONVENING REPORT ON THE FEASIBILITY OF A NEGOTIATED RULEMAKING TO...

428

Software-Based Building Airflow Analysis Tool for Enabling HVAC...  

NLE Websites -- All DOE Office Websites (Extended Search)

Software-Based Building Airflow Analysis Tool for Enabling HVAC Energy Use Savings in Commercial Buildings Speaker(s): Don Wroblewski Date: March 8, 2013 - 12:00pm Location:...

429

The Optimization of Control Parameters for VAV HVAC System Commissioning  

E-Print Network (OSTI)

One of the technical subjects in commissioning for HVAC system is to enhance control performance and time efficiency, while the tuning of the optimal parameters to control HVAC system takes much time and labor in particular. Therefore, we propose a kind of commissioning technique as follows. We identified the dynamic characteristics of components of an actual VAV HVAC system such as rooms, VAV dampers, two way valves and chilled water coils, and verified the behaviors of the models and choose the optimal control parameters on a personal computer. Then adopting them for the actual system, we verified the control performance. Through the procedure, we showed the possibility of off-site and off-line control parameter tuning to reduce the cost and time at on-site and in on-line using the measured data in a real HVAC system.

Song, S.; Maehara, K.; Sagara, N.

2006-01-01T23:59:59.000Z

430

Commissioning and Performance Diagnostics for HVAC Control Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Commissioning and Performance Diagnostics for HVAC Control Systems Speaker(s): Ashish Singhal Date: December 20, 2006 - 12:00pm Location: 90-3122 Seminar HostPoint of Contact:...

431

Adaptive Control and Fault Detection of HVAC Equipment in Commercial...  

NLE Websites -- All DOE Office Websites (Extended Search)

Adaptive Control and Fault Detection of HVAC Equipment in Commercial Buildings Speaker(s): John Seem Date: February 27, 2002 - 12:00pm Location: Bldg. 90 Seminar HostPoint of...

432

LBL-34045 UC-1600 Residential HVAC Data, Assumptions and Methodology  

NLE Websites -- All DOE Office Websites (Extended Search)

5 UC-1600 Residential HVAC Data, Assumptions and Methodology for End-Use Forecasting with EPRI-REEPS 2.1 Francis X. Johnson, Richard E. Brown, James W. Hanford, Alan H. Sanstad and...

433

Ameren Illinois (Electric)- Custom, HVAC, and Motor Business Efficiency Incentives  

Energy.gov (U.S. Department of Energy (DOE))

Prescriptive rebates are available for many HVAC and motor efficiency improvements. Pre-approval is required for all rebates. The programs are available only to non-residential customers that...

434

A Feasibility Study: Mining Daily Traces for Home Heating Control  

E-Print Network (OSTI)

home time and dynamically controls the HVAC system [8]. In general, automated home heating control Department of Computer Science University of Virginia {hong, whitehouse}@virginia.edu ABSTRACT HVAC systems nationwide. Recent work has been focused on auto- mated control based on occupancy prediction, where some

Whitehouse, Kamin

435

Modeling Building Energy Use and HVAC Efficiency Improvements in Extreme Hot and Humid Regions  

E-Print Network (OSTI)

An energy analysis was performed on the Texas A & M University at Qatar building in Doha, Qatar. The building and its HVAC systems were modeled using EnergyPlus. Building chilled water and electrical data were collected to validate the computer simulation. The simulated monthly electricity consumption was within plus/minus 5 percent of the metered building data. Ninety-five percent of simulated hourly electricity data in a day were within plus/minus 10 percent of metered data. Monthly chilled water demand was within plus/minus 18 percent of measurements, and simulated monthly demand was correlated to metered monthly values with an R-squared correlation coefficient of 0.95. Once the simulation was verified with the metered data, an optimization of the building's HVAC systems was performed. Better utilizing the building's variable speed fans at part loads showed potential annual electricity savings of 16 percent over the base case, with another 22 percent savings in chilled water energy. After converting chilled water savings to equivalent chiller electricity savings, the potential utility cost savings over the base case were found to be $90,000/yr at local utility rates. Reducing outdoor air intake to ASHRAE indoor air quality minimums yielded an additional 17 percent in potential chilled water savings and brought total monetary savings over the base case to $110,000/yr. Using a dedicated outside air system to precisely control individual zone ventilation showed potential for an additional 12 percent chilled water savings and $14,000 in yearly utility savings, while also eliminating cases of under-ventilation. A hypothetical retrofit of fan powered terminal units (FPTU's) resulted in energy savings only at very low minimum flow rates, below ventilation standards. Savings were never more than 20 percent over the no-fan case. Series FPTU's showed no savings at any flow setting and negligible difference was found between ECM and SCR motor control. Finally, the dependence on climate of each improvement was studied. Simulations were run in the relatively milder climates of Houston and Phoenix and compared to those found for Doha. It was found that variable speed fan operation is a more cost effective option for milder climates, while outside air control is more cost effective in extreme hot and humid climates such as Doha. Future study is needed to make the FPTU model valid for different climates and flow ranges.

Bible, Mitchell

2011-08-01T23:59:59.000Z

436

Preconditioning Outside Air: Cooling Loads from Building Ventilation  

E-Print Network (OSTI)

HVAC equipment manufacturers, specifiers and end users interacting in the marketplace today are only beginning to address the series of issues promulgated by the increased outside air requirements in ASHRAE Standard 62- 1989, "Ventilation for Acceptable Indoor Air Quality", that has cascaded into building codes over the early to mid 1990's. There has been a twofold to fourfold increase in outside air requirements for many commercial building applications, compared to the 1981 version of the standard. To mitigate or nullify these additional weather loads, outdoor air preconditioning technologies are being promoted in combination with conventional HVAC operations downstream as a means to deliver the required fresh air and control humidity indoors. Preconditioning is the term applied for taking outside air to the indoor air setpoint (dry bulb temperature and relative humidity). The large humidity loads from outside air can now be readily recognized and quantified at cooling design point conditions using the extreme humidity ratios/dew points presented in the ASHRAE Handbook of Fundamentals Chapter 26 "Climatic Design Information". This paper presents an annual index called the Ventilation Load Index (VLI), recently developed by the Gas Research Institute (GRI) that measures the magnitude of latent (and sensible) loads for preconditioning outside air to indoor space conditions over the come of an entire year. The VLI has units of ton-hrs/scfm of outside air. The loads are generated using new weather data binning software called ~BinMaker, also from GRI, that organizes the 239 city, 8760 hour by hour, TMY2 weather data into user selected bidtables. The VLI provides a simple methodology for accessing the cooling load impact of increased ventilation air volumes and a potential basis for defining a "humid" climate location.

Kosar, D.

1998-01-01T23:59:59.000Z

437

Connexus Energy- Residential Efficient HVAC Rebate Program  

Energy.gov (U.S. Department of Energy (DOE))

Connexus Energy offers rebates for residential customers to improve the energy efficiency of homes. Rebates are available for air source heat pumps, ductless heat pumps and ground-source heat pumps...

438

Natural Ventilation | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Natural Ventilation Natural Ventilation Natural Ventilation May 30, 2012 - 7:56pm Addthis Opening a window is a simple natural ventilation strategy. | Credit: ©iStockphoto/Simotion Opening a window is a simple natural ventilation strategy. | Credit: ©iStockphoto/Simotion What does this mean for me? If you live in a part of the country with cool nights and breezes, you may be able to cool your house with natural ventilation. If you're building a new home, design it to take advantage of natural ventilation. Natural ventilation relies on the wind and the "chimney effect" to keep a home cool. Natural ventilation works best in climates with cool nights and regular breezes. The wind will naturally ventilate your home by entering or leaving windows, depending on their orientation to the wind. When wind blows against your

439

Residential Ventilation & Energy  

NLE Websites -- All DOE Office Websites (Extended Search)

5 5 Residential Ventilation & Energy Figure 1: Annual Average Ventilation Costs of the Current U.S. Single-Family Housing Stock ($/year/house). Infiltration and ventilation in dwellings is conventionally believed to account for one-third to one-half of space conditioning energy. Unfortunately, there is not a great deal of measurement data or analysis to substantiate this assumption. As energy conservation improvements to the thermal envelope continue, the fraction of energy consumed by the conditioning of air may increase. Air-tightening programs, while decreasing energy requirements, have the tendency to decrease ventilation and its associated energy penalty at the possible expense of adequate indoor air quality. Therefore, more energy may be spent on conditioning air.

440

Why We Ventilate  

SciTech Connect

It is widely accepted that ventilation is critical for providing good indoor air quality (IAQ) in homes. However, the definition of"good" IAQ, and the most effective, energy efficient methods for delivering it are still matters of research and debate. This paper presents the results of work done at the Lawrence Berkeley National Lab to identify the air pollutants that drive the need for ventilation as part of a larger effort to develop a health-based ventilation standard. First, we present results of a hazard analysis that identified the pollutants that most commonly reach concentrations in homes that exceed health-based standards or guidelines for chronic or acute exposures. Second, we present results of an impact assessment that identified the air pollutants that cause the most harm to the U.S. population from chronic inhalation in residences. Lastly, we describe the implications of our findings for developing effective ventilation standards.

Logue, Jennifer M.; Sherman, Max H.; Price, Phil N.; Singer, Brett C.

2011-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "hvac heating ventilation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Ventilation | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

(often required by building codes) will help to reduce your use of air conditioning, and attic fans may also help keep cooling costs down. Learn More Whole-House Ventilation...

442

Building Envelope and HVAC FOA Selection Projects  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

cold climate commercial heat pump system. The system will reduce annual electricity use for commercial building space heating in cold climates by at least 25 percent....

443

Effective, low-cost HVAC controls upgrade in a small bank building  

Science Conference Proceedings (OSTI)

This report summarizes the measured results from a field study of the performance of a low-cost controls retrofit in a small bank building in Knoxville, TN. The retrofit consisted of a simple upgrade of heating and cooling system controls and new operating strategies. The project was undertaken to better understand how commercial energy use measurement studies should be performed and to demonstrate the effectiveness of a low-cost controls retrofit in a small commercial building. This report describes the details of the project, including building and building system characteristics, the HVAC control changes made, energy end use patterns, and the heating and cooling energy savings achieved. An improved control strategy involving thermostat setback/setup and on/off control was devised around a single replacement programmable thermostat. The strategy allowed thermostat setback/setup control of the primary HVAC system in the building and provided on/off (time-of-day) control for the two secondary systems. The energy efficiency improvements provided a 33% reduction in heating and a 21% reduction in cooling energy consumptions. Simple payback for the retrofit, including installation cost, was under 1 year. In addition to reducing the energy needs of the building, the replacement electronic thermostat provided improved interior comfort. 9 refs., 12 figs., 3 tabs.

Sharp, T.R.; MacDonald, J.M.

1990-01-01T23:59:59.000Z

444

Improving Ventilation and Saving Energy: Final Report on Indoor Environmental Quality and Energy Monitoring in Sixteen Relocatable Classrooms  

NLE Websites -- All DOE Office Websites (Extended Search)

03E 03E Improving Ventilation and Saving Energy: Final Report on Indoor Environmental Quality and Energy Monitoring in Sixteen Relocatable Classrooms Michael G. Apte, Bourassa Norman*, David Faulkner, Alfred T. Hodgson, Toshfumi Hotchi, Michael Spears, Douglas P. Sullivan, and Duo Wang 4 April 2008 Indoor Environment Department Environmental Energy Technologies Division Lawrence Berkeley National Laboratory *Now with the California Energy Commission PIER Program, Sacramento CA. This research was sponsored by the California Energy Commission through the Public Interest Energy Research program as the Lawrence Berkeley National Laboratory Classroom HVAC: Improving Ventilation and Saving Energy research project, CEC Contract Number 500-03-041.

445

Software-as-a-Service Optimised Scheduling of a Solar-Assisted HVAC System  

NLE Websites -- All DOE Office Websites (Extended Search)

Software-as-a-Service Optimised Scheduling of a Solar-Assisted HVAC System Software-as-a-Service Optimised Scheduling of a Solar-Assisted HVAC System with Thermal Storage Title Software-as-a-Service Optimised Scheduling of a Solar-Assisted HVAC System with Thermal Storage Publication Type Conference Proceedings Refereed Designation Refereed LBNL Report Number LBNL-6127E Year of Publication 2013 Authors Mammoli, Andrea, Michael Stadler, Nicholas DeForest, Hans Barsun, Richard Burnett, and Chris Marnay Conference Name 3rd International Conference on Microgeneration and Related Technologies Date Published 04/2013 Conference Location Naples, Italy Keywords absorption cooling, mixed integer programming, optimisation, software-as-a-service, thermal storage Abstract The UNM Mechanical Engineering HVAC system incorporates cooling assisted by a 232 m2 solar thermal array providing heat to a 70 kWthermal absorption chiller. A 30 m3 heat storage tank solar decouples heat production and absorption cooling. Additionally, 350 m3 of chilled water storage shifts the cooling electrical load of this high desert location off-peak. While this system already provides substantial energy and cost savings compared to similar conventional buildings, there are still opportunities for improvement. Absorption cooling (augmented by an electrically powered central cooling loop) suffers from parasitic electric loads from a cooling tower pump, a cooling tower fan, and hot and chilled water circulation pumps. Moreover, depending on seasonal, weather, occupancy, and cost conditions, the cold storage tanks may only need partial charging to meet the next day's net building load, and losses need to be considered. Optimally operating this complex thermal-electrical system poses a challenging mathematical problem. A model of the system was built on LBNL's Distributed Resources Customer Adoption Model (DER-CAM) platform. A direct interface between the building energy control system, and DER-CAM hosted on LBNL's server was developed. This interface delivers daily scheduling based on weather forecasts, tariffs, etc., to the building controller. It is found that energy cost savings can be proportionally substantial (almost 30%) - although in this case the payback period for system implementation is long, due to the very low energy consumption of the building. Also, it is found that accurate weather forecasting is a key ingredient of the optimization, although local biases can be corrected for in the optimization.

446

Influence Of Three Dynamic Predictive Clothing Insulation Models On Building Energy Use, HVAC Sizing And Thermal Comfort  

E-Print Network (OSTI)

ON BUILDING ENERGY USE, HVAC SIZING AND THERMAL COMFORT aThe results showed that when the HVAC is controlled based onequipment sizing. When the HVAC is controlled based on the

Schiavon, Stefano; Lee, Kwang Ho

2013-01-01T23:59:59.000Z

447

Evaluation of commercially available techniques and development of simplified methods for measuring grille airflows in HVAC systems  

E-Print Network (OSTI)

Walker. 2002. “Residential HVAC and Distribution researchMeasuring Grille Airflows in HVAC Systems I.S. Walker, C.P.Measuring Grille Airflows in HVAC Systems I.S. Walker, C.P.

Walker, Iain S.; Wray, Craig P.; Guillot, Cyril; Masson, S.

2003-01-01T23:59:59.000Z

448

Using measured equipment load profiles to "right-size" HVAC systems and reduce energy use in laboratory buildings (Pt. 2)  

E-Print Network (OSTI)

load profiles to “right-size” HVAC systems and reduce energyGeorgia. ASHRAE [1999]. HVAC Applications Handbook 1999.Inefficiency of a Common Lab HVAC System,” presented at the

Mathew, Paul; Greenberg, Steve; Frenze, David; Morehead, Michael; Sartor, Dale; Starr, William

2008-01-01T23:59:59.000Z

449

Residential HVAC Data, Assumptions and Methodology for End-Use Forecasting with EPRI-REEPS 2.1  

E-Print Network (OSTI)

Efficiency Choice 6.3 New Home HVAC System Choice 6.4. NewJuly. EPRI. 1990. REEPS 2.0 HVAC Model Logic, prepared by1990. Review of Equipment HVAC Choice Parameters. Cambridge

Johnson, F.X.

2010-01-01T23:59:59.000Z

450

FEMP-FS--Solar Ventilation Preheating  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Installing a "solar wall" to heat air before it enters a Installing a "solar wall" to heat air before it enters a building, called solar ventilation preheating, is one of the most efficient ways of reducing energy costs using clean and renewable energy. The system works by heating outside air with a south-facing solar collector-a dark-colored wall made of sheet metal and perforated with tiny holes. Outdoor air is drawn through the holes and heated as it absorbs the wall's warmth. The warm air rises in the space between the solar wall and the building wall and is moved into the air-duct system, usually by means of a fan, to heat the building. Any additional heating needed at night or on cloudy days is supplied by the build- ing's conventional heating system. During summer months, intake air bypasses the solar collector,

451

Measuring advances in HVAC distribution system designs  

Science Conference Proceedings (OSTI)

Substantial commercial building energy savings have been achieved by improving the performance of the HVAC distribution system. The energy savings result from distribution system design improvements, advanced control capabilities, and use of variable-speed motors. Yet, much of the commercial building stock remains equipped with inefficient systems. Contributing to this is the absence of a definition for distribution system efficiency as well as the analysis methods for quantifying performance. This research investigates the application of performance indices to assess design advancements in commercial building thermal distribution systems. The index definitions are based on a first and second law of thermodynamics analysis of the system. The second law or availability analysis enables the determination of the true efficiency of the system. Availability analysis is a convenient way to make system efficiency comparisons since performance is evaluated relative to an ideal process. A TRNSYS simulation model is developed to analyze the performance of two distribution system types, a constant air volume system and a variable air volume system, that serve one floor of a large office building. Performance indices are calculated using the simulation results to compare the performance of the two systems types in several locations. Changes in index values are compared to changes in plant energy, costs, and carbon emissions to explore the ability of the indices to estimate these quantities.

Franconi, Ellen

1998-07-01T23:59:59.000Z

452

Summary of human responses to ventilation  

E-Print Network (OSTI)

low ventilation rates and increase in health problems:rate. As ventilation rates increase, benefits gained fordetermined that increases in ventilation rates above 10 Ls -

Seppanen, Olli A.; Fisk, William J.

2004-01-01T23:59:59.000Z

453

Design methods for displacement ventilation: Critical review.  

E-Print Network (OSTI)

Displacement Ventilation. ASHRAE Research project-RP-949.displacement ventilation. ASHRAE Transaction, 96 (1). Ar ???due to displacement ventilation. ASHRAE Transaction, 96 (1).

Schiavon, Stefano

2006-01-01T23:59:59.000Z

454

Infiltration in ASHRAE's Residential Ventilation Standards  

E-Print Network (OSTI)

Related  to  Residential  Ventilation  Requirements”.  Rudd,  A.   2005.   “Review  of  Residential  Ventilation and  Matson  N.E. ,  “Residential  Ventilation  and  Energy 

Sherman, Max

2008-01-01T23:59:59.000Z

455

Improving Ventilation and Saving Energy: Laboratory Study in a Modular Classroom Test Bed  

E-Print Network (OSTI)

HVAC: Improving and Saving Energy (IVSE) Laboratory StudyHVAC: Improving and Saving Energy (IVSE) Laboratory StudyHVAC: Improving and Saving Energy (IVSE) Laboratory Study

2005-01-01T23:59:59.000Z

456

Kentucky Power- Residential Efficient HVAC Rebate Program  

Energy.gov (U.S. Department of Energy (DOE))

Kentucky Power's High Efficiency Heat Pump Program offers a $400 rebate to residential customers living in existing (site-built) homes who upgrade electric resistance heating systems with a new,...

457

An evaluation of three commercially available technologies for real-time measurement of rates of outdoor airflow into HVAC systems  

E-Print Network (OSTI)

RATES OF OUTDOOR AIRFLOW INTO HVAC SYSTEMS William J. Fisk,determine flow resistance of hvac ducts and fittings. A S H

Fisk, William J.; Faulkner, David; Sullivan, Douglas P.

2004-01-01T23:59:59.000Z

458

Building energy modeling programs comparison Research on HVAC systems  

NLE Websites -- All DOE Office Websites (Extended Search)

energy modeling programs comparison Research on HVAC systems energy modeling programs comparison Research on HVAC systems simulation part Title Building energy modeling programs comparison Research on HVAC systems simulation part Publication Type Journal Year of Publication 2013 Authors Zhou, Xin, Da Yan, Tianzhen Hong, and Dandan Zhu Keywords Building energy modeling programs, comparison tests, HVAC system simulation, theory analysis Abstract Building energy simulation programs are effective tools for the evaluation of building energy saving and optimization of design. The fact that large discrepancies exist in simulated results when different BEMPs are used to model the same building has caused wide concern. Urgent research is needed to identify the main elements that contribute towards the simulation results. This technical report summarizes methodologies, processes, and the main assumptions of three building energy modeling programs (BEMPs) for HVAC calculations: EnergyPlus, DeST, and DOE-2.1E, and test cases are designed to analyze the calculation process in detail. This will help users to get a better understanding of BEMPs and the research methodology of building simulation. This will also help build a foundation for building energy code development and energy labeling programs.

459

Issue #7: What are the Best HVAC Solutions for Low-Load, High...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

7: What are the Best HVAC Solutions for Low-Load, High Performance Homes? Issue 7: What are the Best HVAC Solutions for Low-Load, High Performance Homes? What components and...

460

WEATHER SEQUENCES FOR PREDICTING HVAC SYSTEM BEHAVIOUR IN RESIDENTIAL UNITS LOCATED IN TROPICAL CLIMATES.  

E-Print Network (OSTI)

WEATHER SEQUENCES FOR PREDICTING HVAC SYSTEM BEHAVIOUR IN RESIDENTIAL UNITS LOCATED IN TROPICAL on the energy needs of HVAC system. We'll apply the method on the tropical Reunion Island. The methodological

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "hvac heating ventilation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Fight Fall Allergies and Save Energy by Checking Your HVAC System...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Fight Fall Allergies and Save Energy by Checking Your HVAC System Fight Fall Allergies and Save Energy by Checking Your HVAC System October 15, 2012 - 3:19pm Addthis Change your...

462

Critical Question #4: What are the Best Off-the-Shelf HVAC Solutions...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Critical Question 4: What are the Best Off-the-Shelf HVAC Solutions for Low-Load, High-Performance Homes and Apartments? Critical Question 4: What are the Best Off-the-Shelf HVAC...

463

Energy Basics: Ventilation Systems  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

building through the roof, walls, and windows. Heat-reflecting roofs, insulation, and energy efficient windows will help to reduce that heat conduction. Radiation is heat...

464

Measuring Residential Ventilation  

NLE Websites -- All DOE Office Websites (Extended Search)

Measuring Residential Ventilation Measuring Residential Ventilation System Airflows: Part 2 - Field Evaluation of Airflow Meter Devices and System Flow Verification J. Chris Stratton, Iain S. Walker, Craig P. Wray Environmental Energy Technologies Division October 2012 LBNL-5982E 2 Disclaimer This document was prepared as an account of work sponsored by the United States Government. While this document is believed to contain correct information, neither the United States Government nor any agency thereof, nor the Regents of the University of California, nor any of their employees, makes any warranty, express or implied, or assumes any legal responsibility for the accuracy, completeness, or usefulness of any

465

What are the Best HVAC Solutions for Low-Load, High Performance...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

What are the Best HVAC Solutions for Low Load, High Performance Homes? www.BuildingScience.com buildingscience.com...

466

Commissioning and Performance Diagnostics for HVAC Control Systems  

NLE Websites -- All DOE Office Websites (Extended Search)

Commissioning and Performance Diagnostics for HVAC Control Systems Commissioning and Performance Diagnostics for HVAC Control Systems Speaker(s): Ashish Singhal Date: December 20, 2006 - 12:00pm Location: 90-3122 Seminar Host/Point of Contact: Philip Haves The presentation will focus on practical aspects of commissioning control loops in commercial HVAC systems and evaluating their routine performance. Simple and theoretically sound methods for diagnosing control performance will be presented that detect serious performance issues associated with control loops in modern buildings. The discussion will center on a new control loop commissioning tool that helps field personnel to quickly test, tune and troubleshoot control loops. In addition to the active tests for commissioning control loops, a suite of diagnostic algorithms are used in a

467

Optimized HVAC Management Service to Enhance Demand Response  

NLE Websites -- All DOE Office Websites (Extended Search)

Optimized HVAC Management Service to Enhance Demand Response Optimized HVAC Management Service to Enhance Demand Response Speaker(s): John Steinberg Date: August 18, 2011 - 12:00pm Location: 90-4133 Seminar Host/Point of Contact: Janie Page Many utilities are investing vast sums deploying smart meters to customers, some of whom remain stubbornly opposed to those deployments, in large part because they remain unmoved by the claimed benefits. EcoFactor has developed a thermostat management service that delivers (and quantifies) significant energy savings for consumers and a number of additional benefits to other players in the energy value chain. It does so without relying on consumers to modify behavior, study energy information displays, or even pay attention to their energy use. EcoFactor also significantly boosts DR yield while it increases occupant comfort. It can identify HVAC

468

Active noise control: A tutorial for HVAC designers  

Science Conference Proceedings (OSTI)

This article will identify the capabilities and limitations of ANC in its application to HVAC noise control. ANC can be used in ducted HVAC systems to cancel ductborne, low-frequency fan noise by injecting sound waves of equal amplitude and opposite phase into an air duct, as close as possible to the source of the unwanted noise. Destructive interference of the fan noise and injected noise results in sound cancellation. The noise problems that it solves are typically described as rumble, roar or throb, all of which are difficult to address using traditional noise control methods. This article will also contrast the use of active against passive noise control techniques. The main differences between the two noise control measures are acoustic performance, energy consumption, and design flexibility. The article will first present the fundamentals and basic physics of ANC. The application to real HVAC systems will follow.

Gelin, L.J.

1997-08-01T23:59:59.000Z

469

Weather-clustering based strategy design for dynamic demand response building HVAC control  

Science Conference Proceedings (OSTI)

Energy consumption and room temperature can be simulated using EnergyPlus model, given the building model, weather information, and HVAC control strategy. For a given weather forecast, however, online simulation-based optimization of the HVAC control ... Keywords: EnergyPlus, building HVAC control strategy, clustering, dynamic demand response

Rui Liao; Geng Li; Shun Miao; Yan Lu; Jianmin Zhu; Ling Shen

2012-11-01T23:59:59.000Z

470

BLACK-BOX MODELLING OF HVAC SYSTEM: IMPROVING THE PERFORMANCES OF NEURAL NETWORKS  

E-Print Network (OSTI)

BLACK-BOX MODELLING OF HVAC SYSTEM: IMPROVING THE PERFORMANCES OF NEURAL NETWORKS Eric FOCK Ile de La Réunion - FRANCE ABSTRACT This paper deals with neural networks modelling of HVAC systems of HVAC system can be modelled using manufacturer design data presented as derived performance maps

Paris-Sud XI, Université de

471

Department of Energy and Mineral Engineering Spring 2013 Solar Innovations -HVAC and Waste Stream Analysis  

E-Print Network (OSTI)

PENNSTATE Department of Energy and Mineral Engineering Spring 2013 Solar Innovations - HVAC and Waste Stream Analysis Overview There are two problems that were voiced by Solar Innovations, HVAC system design and recycling stream improvement. The HVAC system was not providing even conditioning of office

Demirel, Melik C.

472

Automated Testing of HVAC Systems for Commissioning Tim Salsbury and Rick Diamond  

E-Print Network (OSTI)

Automated Testing of HVAC Systems for Commissioning Tim Salsbury and Rick Diamond Lawrence Berkeley of the commissioning of HVAC systems. The approach is based on software that generates a sequence of test signals for new and retrofit projects. Introduction The performance of many HVAC systems is limited more by poor

Diamond, Richard

473

A CONTROLLER FOR HVAC SYSTEMS WITH FAULT DETECTION CAPABILITIES BASED ON SIMULATION MODELS  

E-Print Network (OSTI)

1 A CONTROLLER FOR HVAC SYSTEMS WITH FAULT DETECTION CAPABILITIES BASED ON SIMULATION MODELS T. I describes a control scheme with fault detection capabilities suitable for application to HVAC systems as a reference of correct operation. Faults that occur in the HVAC system under control cause the PI

474

VOLUME 11, NUMBER 2 HVAC&R RESEARCH APRIL 2005 An Optimization-Based Approach for  

E-Print Network (OSTI)

VOLUME 11, NUMBER 2 HVAC&R RESEARCH APRIL 2005 215 An Optimization-Based Approach for Facility formulation and the correspond- ing solution methodology for HVAC systems. The problem is to minimize the energy and demand costs through control of HVAC units while satisfying human comfort, system dynamics

Luh, Peter

475

Conventional Facilities Chapter 6: HVAC Systems 6-1 NSLS-II Preliminary Design Report  

E-Print Network (OSTI)

Conventional Facilities Chapter 6: HVAC Systems 6-1 NSLS-II Preliminary Design Report 6 MECHANICAL ­ HVAC SYSTEMS 6.1 Design Criteria 6.1.1 Codes and Standards The latest edition of the codes, standards have adequate capacity and head, no chilled water pumps #12;Conventional Facilities Chapter 6: HVAC

Ohta, Shigemi

476

Comparison of dust from HVAC filters, indoor surfaces, and indoor air Federico Noris*  

E-Print Network (OSTI)

Comparison of dust from HVAC filters, indoor surfaces, and indoor air Federico Noris* , Kerry A and Environmental Engineering * Corresponding email: Fedenoris@mail.utexas.edu SUMMARY HVAC filters are long heavy metal (Pb, Cd and As) concentrations. HVAC filter microbial concentrations appear to be consistent

Siegel, Jeffrey

477

VOLUME 16, NUMBER 3 HVAC&R RESEARCH MAY 2010 The Effects of Filtration on  

E-Print Network (OSTI)

VOLUME 16, NUMBER 3 HVAC&R RESEARCH MAY 2010 273 The Effects of Filtration on Pressure Drop and Energy Consumption in Residential HVAC Systems (RP-1299) Brent Stephens Atila Novoselac, PhD Jeffrey A of high-efficiency HVAC filters is a common strategy to control exposure to airborne particulate matter

Siegel, Jeffrey

478

Theoretical Estimates of HVAC Duct Channel Capacity for High-Speed Internet Access  

E-Print Network (OSTI)

Theoretical Estimates of HVAC Duct Channel Capacity for High-Speed Internet Access Ariton E. Xhafa-conditioning (HVAC) ducts based on multi-carrier transmission that uses M-QAM mod- ulation and measured channel- flections in HVAC ducts). Our work also shows that data rates in excess of 300 Mbps are possible over

Stancil, Daniel D.

479

Comparison of HVAC filter test methods for particle removal efficiency Brent Stephens1,*  

E-Print Network (OSTI)

Comparison of HVAC filter test methods for particle removal efficiency Brent Stephens1,* , Jeffrey Introduction The use of HVAC filters in buildings is one strategy to reduce occupant exposure to particulate matter. However, HVAC filters are typically tested only in laboratory settings and little is known about

Siegel, Jeffrey

480

Measure Guideline: Ventilation Cooling  

SciTech Connect

The purpose of this measure guideline on ventilation cooling is to provide information on a cost-effective solution for reducing cooling system energy and demand in homes located in hot-dry and cold-dry climates. This guideline provides a prescriptive approach that outlines qualification criteria, selection considerations, and design and installation procedures.

Springer, D.; Dakin, B.; German, A.

2012-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "hvac heating ventilation" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

HVAC equipment replacement for best size and efficiency  

DOE Green Energy (OSTI)

The purpose of this project was to explore the potential benefits of HVAC equipment replacement for buildings owned by the City of Phoenix. The specific research objectives were as follows: Establishment an understanding of the magnitude and sources of saving available through equipment replacement; Establish an economic model for understanding equipment replacement and deciding when equipment should be replaced; Establish technical methods for calculating savings from replacement of various types of equipment; Demonstrate the replacement of a major item of HVAC equipment and document the savings through actual experimentation and measurement; and Provide guidance material for other jurisdictions wishing to investigate equipment replacement. 11 figs., 9 tabs.

Teji, D.S.

1988-02-01T23:59:59.000Z

482

Wireless Demand Response Controls for HVAC Systems  

E-Print Network (OSTI)

ASHRAE: American Society of Heating, Refrigerating, and Air-Conditioning Engineers Btu: British thermal unit CAV: constant air volume CCZ: California climate zone

Federspiel, Clifford

2010-01-01T23:59:59.000Z