National Library of Energy BETA

Sample records for room air conditioners

  1. Room Air Conditioners | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Room Air Conditioners Room Air Conditioners A room air conditioner is one solution to cooling ... of a long room, then look for a fan control known as "Power Thrust" or "Super ...

  2. Room Air Conditioners | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Room Air Conditioners Room Air Conditioners The Department of Energy (DOE) develops standardized data templates for reporting the results of tests conducted in accordance with current DOE test procedures. Templates may be used by third-party laboratories under contract with DOE that conduct testing in support of ENERGY STAR® verification, DOE rulemakings, and enforcement of the federal energy conservation standards. Room Air Conditioners -- v1.6 (147.68 KB) More Documents & Publications

  3. High Efficiency Room Air Conditioner

    SciTech Connect (OSTI)

    Bansal, Pradeep

    2015-01-01

    This project was undertaken as a CRADA project between UT-Battelle and Geberal Electric Company and was funded by Department of Energy to design and develop of a high efficiency room air conditioner. A number of novel elements were investigated to improve the energy efficiency of a state-of-the-art WAC with base capacity of 10,000 BTU/h. One of the major modifications was made by downgrading its capacity from 10,000 BTU/hr to 8,000 BTU/hr by replacing the original compressor with a lower capacity (8,000 BTU/hr) but high efficiency compressor having an EER of 9.7 as compared with 9.3 of the original compressor. However, all heat exchangers from the original unit were retained to provide higher EER. The other subsequent major modifications included- (i) the AC fan motor was replaced by a brushless high efficiency ECM motor along with its fan housing, (ii) the capillary tube was replaced with a needle valve to better control the refrigerant flow and refrigerant set points, and (iii) the unit was tested with a drop-in environmentally friendly binary mixture of R32 (90% molar concentration)/R125 (10% molar concentration). The WAC was tested in the environmental chambers at ORNL as per the design rating conditions of AHAM/ASHRAE (Outdoor- 95F and 40%RH, Indoor- 80F, 51.5%RH). All these modifications resulted in enhancing the EER of the WAC by up to 25%.

  4. Room Air Conditioners | Department of Energy

    Office of Environmental Management (EM)

    frequently. Based on size alone, an air conditioner generally needs 20 Btu for each square foot of living space. Other important factors to consider when selecting an air...

  5. Covered Product Category: Room Air Conditioners | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Room Air Conditioners Covered Product Category: Room Air Conditioners The Federal Energy Management Program (FEMP) provides acquisition guidance for room air conditioners, a product category covered by the ENERGY STAR program. Federal laws and requirements mandate that agencies purchase ENERGY STAR-qualified products in all product categories covered by this program and any acquisition actions that are not specifically exempted by law. MEETING EFFICIENCY REQUIREMENTS FOR FEDERAL PURCHASES The

  6. Variable Speed Fan Retrofits for Computer Room Air Conditioners |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy Variable Speed Fan Retrofits for Computer Room Air Conditioners Variable Speed Fan Retrofits for Computer Room Air Conditioners Case study describes various concepts for more cost-effective cooling solutions in data centers, while keeping in mind that the reliability of computing systems and their respective cooling systems is always a key criterion. Download the Variable Speed Fan Retrofits for Computer Room Air Conditioners case study. (352.57 KB) More Documents &

  7. Five ENERGY STAR Room Air Conditioners Fail Testing

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy's Office of Enforcement announced today that DOE testing has identified five Friedrich room air conditioners that do not meet the ENERGY STAR Program’s energy...

  8. DOE Reaches $1.5M Settlement with Room Air Conditioner Manufacturer |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy $1.5M Settlement with Room Air Conditioner Manufacturer DOE Reaches $1.5M Settlement with Room Air Conditioner Manufacturer October 27, 2015 - 5:48pm Addthis The General Counsel's enforcement office settled an enforcement action against Friedrich Air Conditioning Company for $1,494,626.25, for the distribution of room air conditioners that failed to meet federal minimum standards for energy efficiency. Room air conditioners must meet minimum efficiency standards to be

  9. ISSUANCE 2015-06-09: Energy Conservation Program: Energy Conservation Standards for Room Air Conditioners; Request for Information

    Office of Energy Efficiency and Renewable Energy (EERE)

    Energy Conservation Program: Energy Conservation Standards for Room Air Conditioners; Request for Information

  10. Technical and economic analysis of energy efficiency of Chinese room air conditioners

    SciTech Connect (OSTI)

    Fridley, David G.; Rosenquist, Gregory; Jiang, Lin; Li, Aixian; Xin, Dingguo; Cheng, Jianhong

    2001-02-01

    China has experienced tremendous growth in the production and sales of room air conditioners over the last decade. Although minimum room air conditioner energy efficiency standards have been in effect since 1989, no efforts were made during most of the 1990's to update the standard to be more reflective of current market conditions. In 1999, China's State Bureau of Technical Supervision (SBTS) included in their annual plan the development and revision of the 1989 room air conditioner standard, and experts from SBTS worked together with LBNL to analyze the new standards. Based on the engineering and life cycle-cost analyses performed, the most predominant type of room air conditioner in the Chinese market (split-type with a cooling capacity between 2500 and 4500 W (8500 Btu/h and 15,300Btu/h)) can have its efficiency increased cost-effectively to an energy efficiency ratio (EER) of 2.92 W/W (9.9 Btu/hr/W). If an EER standard of 2.92 W/W became effective in 2001, Chinese consumers would be estimated to save over 3.5 billion Yuan (420 million U.S. dollars) over the period of 2001-2020. Carbon emissions over the same period would be reduced by approximately 12 million metric tonnes.

  11. ISSUANCE 2015-07-17: Energy Conservation Program: Energy Conservation Standards for Room Air Conditioners; Request for Information, Extension of the Public Comment Period

    Broader source: Energy.gov [DOE]

    Energy Conservation Program: Energy Conservation Standards for Room Air Conditioners; Request for Information, Extension of the Public Comment Period

  12. Low GWP Refrigerants Modelling Study for a Room Air Conditioner Having Microchannel Heat Exchangers

    SciTech Connect (OSTI)

    Shen, Bo; Bhandari, Mahabir S

    2016-01-01

    Microchannel heat exchangers (MHX) have found great successes in residential and commercial air conditioning applications, being compact heat exchangers, to reduce refrigerant charge and material cost. This investigation aims to extend the application of MHXs in split, room air conditioners (RAC), per fundamental heat exchanger and system modelling. For this paper, microchannel condenser and evaporator models were developed, using a segment-to-segment modelling approach. The microchannel heat exchanger models were integrated to a system design model. The system model is able to predict the performance indices, such as cooling capacity, efficiency, sensible heat ratio, etc. Using the calibrated system and heat exchanger models, we evaluated numerous low GWP (global warming potential) refrigerants. The predicted system performance indices, e.g. cooling efficiency, compressor discharge temperature, and required compressor displacement volume etc., are compared. Suitable replacements for R22 and R-410A for the room air conditioner application are recommended.

  13. Common Air Conditioner Problems | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Common Air Conditioner Problems Common Air Conditioner Problems A refrigerant leak is one common air conditioning problem. | Photo courtesy of ©iStockphoto/BanksPhotos. A refrigerant leak is one common air conditioning problem. | Photo courtesy of ©iStockphoto/BanksPhotos. One of the most common air conditioning problems is improper operation. If your air conditioner is on, be sure to close your home's windows and outside doors. For room air conditioners, isolate the room or a group of

  14. Tips: Air Conditioners

    Broader source: Energy.gov [DOE]

    How to operate your air conditioner efficiently, or consider alternatives to air conditioning that can cool effectively in many climates.

  15. Maintaining Your Air Conditioner

    Broader source: Energy.gov [DOE]

    Regular maintenance extends the life of your air conditioner and helps it run as efficiently as possible.

  16. Common Air Conditioner Problems

    Broader source: Energy.gov [DOE]

    When your air conditioner is not operating properly, there are a few things you can check before calling a service professional.

  17. Adsorption air conditioner

    DOE Patents [OSTI]

    Rousseau, Jean L. I.

    1979-01-01

    A solar powered air conditioner using the adsorption process is constructed with its components in a nested cylindrical array for compactness and ease of operation.

  18. Tips: Air Conditioners | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    cool while saving energy. | Photo courtesy of iStockphotogalinast. Buying a bigger room air conditioner won't necessarily make you feel more comfortable during the hot summer...

  19. China Energy Efficiency Round Robin Testing Results for Room Air Conditioners

    SciTech Connect (OSTI)

    Zhou, Nan; Fridley, David; Zheng, Nina; Pierrot, Andre

    2010-06-07

    of all countries energy strategies. As we all know, a very large amount of total energy consumption is due to energy consuming products and equipment, which account for about 50% of China's total energy consumption. However, the current average energy utilization efficiency of this sector is only about 60%, 10 percent lower than the international advanced level. Therefore, China's energy consuming products and equipment sector holds great energy-saving potential. On the other hand, the energy supplied to these products is mainly from fossil fuel combustion, a major source of greenhouse gas (GHG) emissions. Therefore, improving the energy efficiency and augmenting the market share of market-dominant energy consuming products is of significant importance to achieving China's energy saving and emission reduction target and is an effective means to deal with energy and environmental constraints and climate change issues. Main energy consuming products generally include widely-used home appliances, industrial equipment, office equipment, transportation vehicles, etc. China is one of the major manufacturers and exporters of energy end-using products such as air-conditioners, refrigerators, televisions, etc. Their overall energy efficiency is comparatively low and the products are poorly designed, leading to great energy-saving potential. For example, electricity consumption of air conditioners accounts for about 20% of China's total electricity consumption and 40% of the summer electricity peak load in large and medium cities. However, less than 5% of units sold in the domestic market in 2009 reached the standard's highly efficient level of grade 2 above. The electricity consumption of electric motors and their related drive systems accounts for about 60% of China's total electricity consumption; however, less than 2% of the domestic market share consists of energy-efficient electric motor products. Promoting the energy efficiency and market shares of main energy

  20. Solid State Magnetocaloric Air Conditioner

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    National Laboratory 2 Cooling Effect: Solid State Magnetocaloric Air Conditioner T cold T ... and fabricate permanent magnets Communications: * Abstract accepted for the Purdue ...

  1. Central Air Conditioners","Heat Pumps","Individual Air Conditioners...

    U.S. Energy Information Administration (EIA) Indexed Site

    Air Conditioners","District Chilled Water","Central Chillers","Packaged Air ...,2354,2114,2054,"Q","Q" "District Chilled Water ......",2750,2750,"Q",336,359,2750,386,72...

  2. Central Air Conditioners","Heat Pumps","Individual Air Conditioners...

    U.S. Energy Information Administration (EIA) Indexed Site

    Air Conditioners","District Chilled Water","Central Chillers","Packaged Air ..."Q",21,43,16,43,"Q","Q" "District Chilled Water ......",50,50,"Q",4,"Q",50,1,"Q","Q","Q" ...

  3. Air Conditioner Regional Standards Brochure

    Broader source: Energy.gov [DOE]

    DOE has adopted energy conservation standards for split-system air conditioners that vary depending on when and where a unit is installed. This brochure is designed to provide information about the new standards to distributors, contractors (installers), and consumers.

  4. Cromer Cycle Air Conditioner

    Broader source: Energy.gov [DOE]

    New Air Conditioning System Uses Desiccant to Transfer Moisture and Increase Efficiency and Capacity

  5. 13 EER Window Air Conditioner

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    3 EER Window Air Conditioner 2014 Building Technologies Office Peer Review Broadway Apartment Building with WACs in NYC Pradeep Bansal, bansalpk@ornl.gov Oak Ridge National Laboratory Project Summary Timeline: Key Partners: Start date: October 1, 2011 Planned end date: September 30, 2015 Key Milestones: 1. Complete preliminary simulations to predict design point performance; March 31, 2012 2. Testing of Lab Breadboard; September 30 2013 3. Design production ready unit; March 31 2014 Budget:

  6. High-Efficiency Window Air Conditioners - Building America Top...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    High-Efficiency Window Air Conditioners - Building America Top Innovation High-Efficiency Window Air Conditioners - Building America Top Innovation This photo shows a window air ...

  7. Maintaining Your Air Conditioner | Department of Energy

    Office of Environmental Management (EM)

    filters is a critical maintenance task. | Photo courtesy of iStockphotofiremanYU. Replacing or cleaning air conditioner filters is a critical maintenance task. | Photo ...

  8. Enforcement Policy Statement: Split-System Central Air Conditioners...

    Energy Savers [EERE]

    Split-System Central Air Conditioners Without HSVC December 16, 2015 In the November 9, 2015 central air conditioner test procedure supplemental notice of proposed rulemaking (80 ...

  9. YMGI Through-the-Wall Air Conditioner Determined Noncompliant...

    Energy Savers [EERE]

    YMGI Through-the-Wall Air Conditioner Determined Noncompliant With Energy Efficiency Standard YMGI Through-the-Wall Air Conditioner Determined Noncompliant With Energy Efficiency ...

  10. Product Standards for Air Conditioners (Japan) | Open Energy...

    Open Energy Info (EERE)

    Air Conditioners (Japan) Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Product Standards for Air Conditioners (Japan) Focus Area: Appliances & Equipment Topics: Policy...

  11. Ex Parte Communication on Central Air-Conditioner Test Procedure...

    Office of Environmental Management (EM)

    Ex Parte Communication on Central Air-Conditioner Test Procedure - ICM Issues On October ... Energy (DOE) to discuss proposed amended test procedures for central air conditioners ...

  12. Development of vehicle magnetic air conditioner (VMAC) technology...

    Office of Scientific and Technical Information (OSTI)

    Development of vehicle magnetic air conditioner (VMAC) technology. Final report Citation Details In-Document Search Title: Development of vehicle magnetic air conditioner (VMAC) ...

  13. Purchasing Energy-Efficient Residential Central Air Conditioners...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Central Air Conditioners Purchasing Energy-Efficient Residential Central Air Conditioners The Federal Energy Management Program (FEMP) provides acquisition guidance for residential ...

  14. Central Air Conditioner Enforcement Policy Statement | Department...

    Broader source: Energy.gov (indexed) [DOE]

    April 24, 2014 DOE will not seek civil penalties for violations of the regional standards applicable to central air conditioners that occur prior to July 1, 2016, provided that the...

  15. Tips: Air Conditioners | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    Bigger isn't always better for an air conditioner. Learn effective ways to stay cool while saving energy. | Photo courtesy of iStockphotogalinast. Bigger isn't always better...

  16. Common Air Conditioner Problems | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    ... the evaporative coil. If the sensor is knocked out of position, the air conditioner could cycle constantly or behave erratically. The sensor should be near the coil but not ...

  17. Avoiding 100 new power plants by increasing efficiency of room air conditioners in India: opportunities and challenges

    SciTech Connect (OSTI)

    Phadke, Amol; Abhyankar, Nikit; Shah, Nihar

    2013-10-15

    Electricity demand for room ACs is growing very rapidly in emerging economies such as India. We estimate the electricity demand from room ACs in 2030 in India considering factors such as weather and income growth using market data on penetration of ACs in different income classes and climatic regions. We discuss the status of the current standards, labels, and incentive programs to improve the efficiency of room ACs in these markets and assess the potential for further large improvements in efficiency and find that efficiency can be improved by over 40% cost effectively. The total potential energy savings from Room AC efficiency improvement in India using the best available technology will reach over 118 TWh in 2030; potential peak demand saving is found to be 60 GW by 2030. This is equivalent to avoiding 120 new coal fired power plants of 500 MW each. We discuss policy options to complement, expand and improve the ongoing programs to capture this large potential.

  18. Avoiding 100 New Power Plants by Increasing Efficiency of Room Air Conditioners in India: Opportunities and Challenges

    SciTech Connect (OSTI)

    Phadke, Amol; Abhyankar, Nikit; Shah, Nihar

    2014-06-19

    Electricity demand for room ACs is growing very rapidly in emerging economies such as India. We estimate the electricity demand from room ACs in 2030 in India considering factors such as weather and income growth using market data on penetration of ACs in different income classes and climatic regions. We discuss the status of the current standards, labels, and incentive programs to improve the efficiency of room ACs in these markets and assess the potential for further large improvements in efficiency and find that efficiency can be improved by over 40percent cost effectively. The total potential energy savings from Room AC efficiency improvement in India using the best available technology will reach over 118 TWh in 2030; potential peak demand saving is found to be 60 GW by 2030. This is equivalent to avoiding 120 new coal fired power plants of 500 MW each. We discuss policy options to complement, expand and improve the ongoing programs to capture this large potential.

  19. Ductless Mini-Split Air Conditioners | Department of Energy

    Office of Environmental Management (EM)

    Mini-Split Air Conditioners A ductless mini-split air conditioner is one solution to cooling part of a house. | Photo courtesy of iStockphotoLUke1138. A ductless...

  20. Covered Product Category: Residential Central Air Conditioners

    Broader source: Energy.gov [DOE]

    FEMP provides acquisition guidance across a variety of product categories, including residential central air conditioners (CACs), which are an ENERGY STAR-qualified product category. Federal laws and requirements mandate that agencies meet these efficiency requirements in all procurement and acquisition actions that are not specifically exempted by law.

  1. Ductless Mini-Split Air Conditioners | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Ductless Mini-Split Air Conditioners Ductless Mini-Split Air Conditioners A ductless mini-split air conditioner is one solution to cooling part of a house. | Photo courtesy of ©iStockphoto/LUke1138. A ductless mini-split air conditioner is one solution to cooling part of a house. | Photo courtesy of ©iStockphoto/LUke1138. Ductless, mini split-system air-conditioners (mini splits) have numerous potential applications in residential, commercial, and institutional buildings. The most common

  2. NREL Solves Residential Window Air Conditioner Performance Limitations...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Window air conditioners are inexpensive, portable, and can be installed by home occupants, making them a good solution for supplemental cooling, for installing air conditioning ...

  3. Tips for Running an Air Conditioner Without Breaking the Bank...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Keeping your air conditioner maintained can help save you money this summer. | Photo courtesy of iStockphotofiremanYU Saving Money During the Air Conditioning Season Connect ...

  4. Enforcement Policy: Split-System Central Air Conditioners Without HSVC |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy Split-System Central Air Conditioners Without HSVC Enforcement Policy: Split-System Central Air Conditioners Without HSVC December 16, 2015 DOE issued an enforcement policy that it would begin investigating the methods manufacturers are using to rate split-system central air conditioners that do not have a highest sales volume combination (HSVC) to test as required by the applicable regulations and that it would assess penalties for units manufactured after February 1,

  5. Ex Parte Communication on Central Air-Conditioner Test Procedure |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy Procedure Ex Parte Communication on Central Air-Conditioner Test Procedure On September 18, 2015, AHRI staff and Manufacturing Representatives met with representatives from the Department of Energy (DOE) to discuss proposed amended test procedures for central air conditioners. AHRI Ex Parte Memo CACTP (39.48 KB) More Documents & Publications Ex Parte Communication on Central Air-Conditioner Test Procedure - ICM Issues Ex Parte Memo on CAC/Dry Charged Units

  6. Purchasing Energy-Efficient Residential Central Air Conditioners |

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Department of Energy Central Air Conditioners Purchasing Energy-Efficient Residential Central Air Conditioners The Federal Energy Management Program (FEMP) provides acquisition guidance for residential central air conditioners, a product category covered by ENERGY STAR. Federal laws and requirements mandate that agencies purchase ENERGY STAR-qualified products or FEMP-designated products in all product categories covered by these programs and in any acquisition actions that are not

  7. The Natural Gas Heat Pump and Air Conditioner

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Natural Gas Heat Pump and Air Conditioner 2016 Building Technologies Office Peer Review ... Gas Technology Institute to optimize integration of NOx-free radiation burner. * Testing ...

  8. The Natural gas Heat Pump and Air Conditioner

    Broader source: Energy.gov (indexed) [DOE]

    The Natural Gas Heat Pump and Air Conditioner 2015 Building Technologies Office Peer ... Summit - Best Presenter Project Integration and Collaboration Project Integration: ...

  9. Understanding Energy Impacts of Oversized Air Conditioners (Fact...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    research reveals the effects of parasitic power losses on the energy consumption of oversized residential air conditioners. Retrofits of existing homes can be substantial invest- ...

  10. Technical support document: Energy efficiency standards for consumer products: Room air conditioners, water heaters, direct heating equipment, mobile home furnaces, kitchen ranges and ovens, pool heaters, fluorescent lamp ballasts and television sets. Volume 1, Methodology

    SciTech Connect (OSTI)

    Not Available

    1993-11-01

    The Energy Policy and Conservation Act (P.L. 94-163), as amended, establishes energy conservation standards for 12 of the 13 types of consumer products specifically covered by the Act. The legislation requires the Department of Energy (DOE) to consider new or amended standards for these and other types of products at specified times. DOE is currently considering amending standards for seven types of products: water heaters, direct heating equipment, mobile home furnaces, pool heaters, room air conditioners, kitchen ranges and ovens (including microwave ovens), and fluorescent light ballasts and is considering establishing standards for television sets. This Technical Support Document presents the methodology, data, and results from the analysis of the energy and economic impacts of the proposed standards. This volume presents a general description of the analytic approach, including the structure of the major models.

  11. Energy savings potential in air conditioners and chiller systems

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Kaya, Durmus; Alidrisi, Hisham

    2014-01-22

    In the current paper we quantified and evaluated the energy saving potential in air conditioners and chiller systems. Here, we also showed how to reduce the cost of air conditioners and chiller systems in existing facilities on the basis of payback periods. Among the measures investigated were: (1) installing higher efficiency air conditioners, (2) installing higher efficiency chillers, (3) duty cycling air conditioning units, and (4) utilizing existing economizers on air conditioning units. For each method, examples were provided from Arizona, USA. In these examples, the amount of saved energy, the financial evaluation of this energy, and the investment costmore » and pay back periods were calculated.« less

  12. Energy savings potential in air conditioners and chiller systems

    SciTech Connect (OSTI)

    Kaya, Durmus; Alidrisi, Hisham

    2014-01-22

    In the current paper we quantified and evaluated the energy saving potential in air conditioners and chiller systems. Here, we also showed how to reduce the cost of air conditioners and chiller systems in existing facilities on the basis of payback periods. Among the measures investigated were: (1) installing higher efficiency air conditioners, (2) installing higher efficiency chillers, (3) duty cycling air conditioning units, and (4) utilizing existing economizers on air conditioning units. For each method, examples were provided from Arizona, USA. In these examples, the amount of saved energy, the financial evaluation of this energy, and the investment cost and pay back periods were calculated.

  13. ISSUANCE 2015-05-01: Commercial Package Air Conditioners and Commercial Warm Air Furnaces Working Group; Notice of Open Meetings

    Broader source: Energy.gov [DOE]

    Commercial Package Air Conditioners and Commercial Warm Air Furnaces Working Group; Notice of Open Meetings

  14. FINAL REPORT DEVELOPMENT OF VEHICLE MAGNETIC AIR CONDITIONER...

    Office of Scientific and Technical Information (OSTI)

    ... A typical R134a automobile vapor cycle air conditioning unit (CzH2F4 refrigerant) was used ... Table 1. Operating characteristics of a typical R134a automobile air conditioner 1,2 ...

  15. Establish the Commercial Pacakge Air Conditioners and Commercial...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    commercial package air conditioners, heat pumps, and commercial warm air furnaces is an action issued by the Department of Energy. Though it is not intended or expected, should any...

  16. High efficiency novel window air conditioner

    SciTech Connect (OSTI)

    Bansal, Pradeep

    2015-01-01

    This paper presents the technical development of a high efficiency window air conditioner. In order to achieve higher energy efficiency ratio (EER), the original capacity of the R410A unit was downgraded by replacing the original compressor with a lower capacity but higher EER compressor, while all heat exchangers and the chassis from the original unit were retained. The other subsequent major modifications included – the AC fan motor being replaced with a brushless high efficiency electronically commuted motor (ECM) motor, the capillary tube being replaced with a needle valve to better control the refrigerant flow and refrigerant set points, and R410A being replaced with drop-in environmentally friendly binary mixture of R32 (85% molar concentration)/R125 (15% molar concentration). All these modifications resulted in significant EER enhancement of the modified unit.

  17. High efficiency novel window air conditioner

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Bansal, Pradeep

    2015-01-01

    This paper presents the technical development of a high efficiency window air conditioner. In order to achieve higher energy efficiency ratio (EER), the original capacity of the R410A unit was downgraded by replacing the original compressor with a lower capacity but higher EER compressor, while all heat exchangers and the chassis from the original unit were retained. The other subsequent major modifications included – the AC fan motor being replaced with a brushless high efficiency electronically commuted motor (ECM) motor, the capillary tube being replaced with a needle valve to better control the refrigerant flow and refrigerant set points, andmore » R410A being replaced with drop-in environmentally friendly binary mixture of R32 (85% molar concentration)/R125 (15% molar concentration). All these modifications resulted in significant EER enhancement of the modified unit.« less

  18. High efficiency novel window air conditioner

    SciTech Connect (OSTI)

    Bansal, Pradeep

    2015-07-24

    This paper presents the technical development of a high efficiency window air conditioner. In order to achieve higher energy efficiency ratio (EER), the original capacity of the R410A unit was downgraded by replacing the original compressor with a lower capacity but higher EER compressor, while all heat exchangers and the chassis from the original unit were retained. The other subsequent major modifications included – the AC fan motor being replaced with a brushless high efficiency electronically commuted motor (ECM) motor, the capillary tube being replaced with a needle valve to better control the refrigerant flow and refrigerant set points, and R410A being replaced with drop-in environmentally friendly binary mixture of R32 (85% molar concentration)/R125 (15% molar concentration). All these modifications resulted in significant EER enhancement of the modified unit.

  19. 13-Energy Efficiency Ratio Window Air Conditioner | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    -Energy Efficiency Ratio Window Air Conditioner 13-Energy Efficiency Ratio Window Air Conditioner Credit: Oak Ridge National Lab Credit: Oak Ridge National Lab Lead Performer: Oak Ridge National Laboratory - Oak Ridge, TN Partners: General Electric - Fairfield, CT DOE Funding: $1,540,000 Cost Share: Provided by CRADA partners Project Term: October 1, 2011 - September 30, 2015 Project Objective This project is designing and developing a high-efficiency 13 energy-efficiecy-ratio (EER) window air

  20. Four Central Air Conditioners Determined Noncompliant With Energy...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    (Notice) on September 27, 2011, to AeroSys, Inc. (AeroSys) regarding four models of central (through-the-wall) air conditioners that fail to meet Federal energy...

  1. High-Efficiency Window Air Conditioners- Building America Top Innovation

    Broader source: Energy.gov [DOE]

    This Top Innovation profile highlights research into making window air conditioners much more energy efficient, and recommendations for homeowners about how to improve the operating efficiency of their units.

  2. Electrolux Gibson Air Conditioner and Equator Clothes Washer...

    Broader source: Energy.gov (indexed) [DOE]

    ENERGY STAR program has revealed that an Electrolux Gibson air conditioner (model GAH105Q2T1) and an Equator clothes washer (model EZ 3720 CEE), both of which claimed ENERGY STAR...

  3. Improving Air-Conditioner and Heat Pump Modeling

    SciTech Connect (OSTI)

    Winkler, Jon

    2012-03-02

    This presentation describes a new approach to modeling residential air conditioners and heat pumps, which allows users to model systems by specifying only the more readily-available SEER/EER/HSPF-type metrics. Manufacturer data was used to generate full sets of model inputs for over 450 heat pumps and air conditioners. A sensitivity analysis identified which inputs can be safely defaulted behind-the-scenes without negatively impacting the reliability of energy simulations.

  4. Improving Air-Conditioner and Heat Pump Modeling (Presentation)

    SciTech Connect (OSTI)

    Winkler, J.

    2012-03-01

    A new approach to modeling residential air conditioners and heat pumps allows users to model systems by specifying only the more readily-available SEER/EER/HSPF-type metrics. Manufacturer data was used to generate full sets of model inputs for over 450 heat pumps and air conditioners. A sensitivity analysis identified which inputs can be safely defaulted 'behind-the-scenes' without negatively impacting the reliability of energy simulations.

  5. Novel Solid State Magnetocaloric Air Conditioner | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Solid State Magnetocaloric Air Conditioner Novel Solid State Magnetocaloric Air Conditioner Fully solid-state concept with no valves; simple design. Image courtesy of Oak Ridge National Laboratory and BTO Peer Review. Fully solid-state concept with no valves; simple design. Image courtesy of Oak Ridge National Laboratory and BTO Peer Review. Lead Performer: Oak Ridge National Laboratory, Oak Ridge, TN Partners: Vaccumschmelze GmbH & Co. KG., Hanau, Germany DOE Total Funding: $1,360,000 Cost

  6. Enforcement Policy Statement: Off Mode Standards for Central Air Conditioners

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Enforcement Policy Statement: Off Mode Standards for Central Air Conditioners and Central Air Conditioning Heat Pumps July 8, 2014 On June 27, 2011, the Department of Energy (DOE) published in the Federal Register a direct final rule (DFR) under the Energy Policy and Conservation Act (EPCA), 42 U.S.C. §§ 6291-6309, which set forth amended energy conservation standards for central air conditioners and central air conditioning heat pumps (CAC/HP), including a new standard for off mode electrical

  7. Rooftop Unitary Air Conditioner with Integral Dedicated Outdoor Air System

    SciTech Connect (OSTI)

    Tiax Llc

    2006-02-28

    Energy use of rooftop and other unitary air-conditioners in commercial applications accounts for about 1 quad (10{sup 15} Btu) of primary energy use annually in the U.S. [Reference 7]. The realization that this cooling equipment accounts for the majority of commercial building cooled floorspace and the majority also of commercial building energy use has spurred development of improved-efficiency equipment as well as development of stricter standards addressing efficiency levels. Another key market driver affecting design of rooftop air-conditioning equipment has been concern regarding comfort and the control of humidity. Trends for increases in outdoor air ventilation rates in certain applications, and the increasing concern about indoor air quality problems associated with humidity levels and moisture in buildings points to a need for improved dehumidification capability in air-conditioning equipment of all types. In many cases addressing this issue exacerbates energy efficiency, and vice versa. The integrated dedicated outdoor air system configuration developed in this project addresses both energy and comfort/humidity issues.

  8. Laboratory Performance Testing of Residential Window Air Conditioners

    SciTech Connect (OSTI)

    Winkler, J.; Booten, C.; Christensen, D.; Tomerlin, J.

    2013-03-01

    Window air conditioners are the dominant cooling product for residences, in terms of annual unit sales. They are inexpensive, portable and can be installed by the owner. For this reason, they are an attractive solution for supplemental cooling, for retrofitting air conditioning into a home which lacks ductwork, and for renters. Window air conditioners for sale in the United States are required to meet very modest minimum efficiency standards. Four window air conditioners' performance were tested in the Advanced HVAC Systems Laboratory on NREL's campus in Golden, CO. In order to separate and study the refrigerant system's performance, the unit's internal leakage pathways, the unit's fanforced ventilation, and the leakage around the unit resulting from installation in a window, a series of tests were devised that focused on each aspect of the unit's performance. These tests were designed to develop a detailed performance map to determine whole-house performance in different climates. Even though the test regimen deviated thoroughly from the industry-standard ratings test, the results permit simple calculation of an estimated rating for both capacity and efficiency that would result from a standard ratings test. Using this calculation method, it was found that the three new air conditioners' measured performance was consistent with their ratings. This method also permits calculation of equivalent SEER for the test articles. Performance datasets were developed across a broad range of indoor and outdoor operating conditions, and used them to generate performance maps.

  9. Purchasing Energy-Efficient Residential Central Air Conditioners

    Broader source: Energy.gov [DOE]

    FEMP provides acquisition guidance for residential central air conditioners, a product category covered by ENERGY STAR. Federal laws and requirements mandate that agencies purchase ENERGY STAR-qualified products or FEMP-designated products in all product categories covered by these programs and in any acquisition actions that are not specifically exempted by law.

  10. Room Air Conditioners | Open Energy Information

    Open Energy Info (EERE)

    Contact needs updating Image needs updating Reference needed Missing content Broken link Other Additional Comments Cancel Submit Category: Articles with outstanding TODO tasks...

  11. Covered Product Category: Room Air Conditioners | Department...

    Office of Environmental Management (EM)

    with the ENAC "LM" at the end of the NSN. The United ... using an assumed electricity price of 0.09 per kWh, ... lead to higher energy consumption and poor humidity ...

  12. Room Air Conditioners | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    ... Other features to look for include: A filter that slides out easily for regular cleaning Logically arranged controls A digital readout for the thermostat setting A built-in timer. ...

  13. DOE Takes Action to Stop the Sales of Air-Con Air Conditioner Models Shown

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    to Violate Federal Energy Efficiency Appliance Standards | Department of Energy Action to Stop the Sales of Air-Con Air Conditioner Models Shown to Violate Federal Energy Efficiency Appliance Standards DOE Takes Action to Stop the Sales of Air-Con Air Conditioner Models Shown to Violate Federal Energy Efficiency Appliance Standards September 23, 2010 - 12:00am Addthis Washington, DC - The Department of Energy announced today that it has taken action against Air-Con, International, requiring

  14. ISSUANCE 2015-08-21: Energy Conservation Standards for Central Air Conditioners and Heat Pumps: Notice of Data Availability

    Office of Energy Efficiency and Renewable Energy (EERE)

    Energy Conservation Standards for Central Air Conditioners and Heat Pumps: Notice of Data Availability

  15. ISSUANCE 2015-11-19: Energy Conservation Program: Test Procedures for Portable Air Conditioners; Supplemental Notice of Proposed Rulemaking

    Office of Energy Efficiency and Renewable Energy (EERE)

    Energy Conservation Program: Test Procedures for Portable Air Conditioners; Supplemental Notice of Proposed Rulemaking

  16. ISSUANCE 2016-04-27 Energy Conservation Program: Energy Conservation Standards for Portable Air Conditioners, Notice of Proposed Rulemaking

    Office of Energy Efficiency and Renewable Energy (EERE)

    Energy Conservation Program: Energy Conservation Standards for Portable Air Conditioners, Notice of Proposed Rulemaking

  17. A Homeowners Guide to Window Air Conditioner Installation for...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Window air conditioners (ACs) are an inexpensive alternative to central systems, and are ... The study showed that window AC installation resulted in signifcant air ...

  18. Analysis of Environmentally Friendly Refrigerant Options for Window Air Conditioners

    SciTech Connect (OSTI)

    Bansal, Pradeep; Shen, Bo

    2015-01-01

    This paper presents a technical assessment of environmentally friendly refrigerants as alternatives to R410A for window air conditioners. The alternative refrigerants that are studied for its replacement include R32, a mixture of R32/R125 with 90%/10% molar concentration, R600a, R290, R1234yf, R1234ze and R134a. Baseline experiments were performed on a window unit charged with R410A. The heat pump design model (HPDM) was modified and calibrated with the baseline data and was used to evaluate the comparative performance of the WAC with alternative refrigerants. The paper discusses the advantages and disadvantages of each refrigerants and their suitability for window air conditioners. Among all the refrigerants studied, R32 offers the best efficiency and the lowest Global Warming Potential (GWP), and hence its use will result in the overall environmental friendliness.

  19. Assessment of Environmentally Friendly Refrigerants for Window Air Conditioners

    SciTech Connect (OSTI)

    Bansal, Pradeep; Shen, Bo

    2014-01-01

    This paper presents technical assessment of environmentally friendly refrigerants for window air conditioners that currently use refrigerant R410A for residential and commercial applications. The alternative refrigerants that are studied for its replacement include R32, R600a, R290, R1234yf, R1234ze and a mixture of R32 (90% molar concentration) and R125 (10% molar concentration). Baseline experiments were performed on a window unit charged with R410A. The ORNL Heat Pump Design Model was calibrated with the baseline data and was used to assess the comparative performance of the WAC with alternative refrigerants. The paper discusses the advantages and disadvantages of each refrigerants and their suitability for window air conditioners.

  20. Analysis of Environmentally Friendly Refrigerant Options for Window Air Conditioners

    SciTech Connect (OSTI)

    Bansal, Pradeep; Shen, Bo

    2015-03-12

    This paper presents a technical assessment of environmentally friendly refrigerants as alternatives to R410A for window air conditioners. The alternative refrigerants that are studied for its replacement include R32, a mixture of R32/R125 with 90%/10% molar concentration, R600a, R290, R1234yf, R1234ze and R134a. Baseline experiments were performed on a window unit charged with R410A. The heat pump design model (HPDM) was modified and calibrated with the baseline data and was used to evaluate the comparative performance of the WAC with alternative refrigerants. The paper discusses the advantages and disadvantages of each refrigerants and their suitability for window air conditioners. Among all the refrigerants studied, R32 offers the best efficiency and the lowest Global Warming Potential (GWP), and hence its use will result in the overall environmental friendliness.

  1. Analysis of Environmentally Friendly Refrigerant Options for Window Air Conditioners

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Bansal, Pradeep; Shen, Bo

    2015-03-12

    This paper presents a technical assessment of environmentally friendly refrigerants as alternatives to R410A for window air conditioners. The alternative refrigerants that are studied for its replacement include R32, a mixture of R32/R125 with 90%/10% molar concentration, R600a, R290, R1234yf, R1234ze and R134a. Baseline experiments were performed on a window unit charged with R410A. The heat pump design model (HPDM) was modified and calibrated with the baseline data and was used to evaluate the comparative performance of the WAC with alternative refrigerants. The paper discusses the advantages and disadvantages of each refrigerants and their suitability for window air conditioners. Amongmore » all the refrigerants studied, R32 offers the best efficiency and the lowest Global Warming Potential (GWP), and hence its use will result in the overall environmental friendliness.« less

  2. Development and Analysis of Desiccant Enhanced Evaporative Air Conditioner Prototype

    SciTech Connect (OSTI)

    Kozubal, E.; Woods, J.; Judkoff, R.

    2012-04-01

    This report documents the design of a desiccant enhanced evaporative air conditioner (DEVAP AC) prototype and the testing to prove its performance. Previous numerical modeling and building energy simulations indicate a DEVAP AC can save significant energy compared to a conventional vapor compression AC (Kozubal et al. 2011). The purposes of this research were to build DEVAP prototypes, test them to validate the numerical model, and identify potential commercialization barriers.

  3. De-icing thermostat for air conditioners

    SciTech Connect (OSTI)

    Levine, M.R.

    1986-12-09

    This patent describes an electronic thermostat adapted to be connected to an air-cooling apparatus to control the operative state of the apparatus. The thermostat includes a means for generating a digital electrical signal representative of a desired temperature setpoint and means for generating a digital electrical signal representative of the ambient temperature at the thermostat. The improvement described here comprises: means for generating control signals for the aircooling apparatus in order to inhibit the accumulation of ice on the cooling element of the air-cooling apparatus when the ambient temperature is above the temperature setpoint; means, responsive to the control signals, for deenergizing the compressor in the air-cooling apparatus for a first preselected period of time whenever the compressor is determined to have run continuously for a second preselected period of time; and means for adaptively adjusting the length of at least one of the first or second preselected periods of time as a function of the change in the rate of change of the ambient temperature.

  4. 2015-02-12 Issuance: Test Procedures for Portable Air Conditioners; Notice

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    of Proposed Rulemaking | Department of Energy 2 Issuance: Test Procedures for Portable Air Conditioners; Notice of Proposed Rulemaking 2015-02-12 Issuance: Test Procedures for Portable Air Conditioners; Notice of Proposed Rulemaking This document is a pre-publication Federal Register notice of proposed rulemaking regarding test procedures for portable air conditioners, as issued by the Deputy Assistant Secretary for Energy Efficiency on February 12, 2015. Though it is not intended or

  5. 2015-02-12 Issuance: Test Procedures for Portable Air Conditioners...

    Broader source: Energy.gov (indexed) [DOE]

    ISSUANCE 2016-04-26: Energy Conservation Program: Test Procedures for Portable Air Conditioners, Final Rule ISSUANCE 2015-11-19: Energy Conservation Program: Test Procedures for ...

  6. DOE Orders AeroSys to Halt Distribution of Inefficient Air Conditioner...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    and air conditioners last year, before beginning independent testing on 7 product models ... Read the full Notice of Noncompliance. Media Contacts: Media Contacts: Number: (202) ...

  7. Advanced Thin Film Thermoelectric Systems forEfficient Air-Conditioner...

    Broader source: Energy.gov (indexed) [DOE]

    Presents recent advances in thermoelectric device fabrication and the design of novel coolingheating engines exploiting thermal storage for efficient air-conditioners in ...

  8. EERE Success Story—DOE Industry Partnerships Lead to Widespread Adoption of Efficient Commercial Air Conditioners

    Broader source: Energy.gov [DOE]

    Commercial air conditioners, often referred to as rooftop units (RTUs), are commonly used across commercial building sectors such as schools, restaurants, big box retailers, and small office...

  9. Advanced Thin Film Thermoelectric Systems forEfficient Air-Conditioners

    Office of Energy Efficiency and Renewable Energy (EERE)

    Presents recent advances in thermoelectric device fabrication and the design of novel cooling/heating engines exploiting thermal storage for efficient air-conditioners in automobiles

  10. Using Field-Metered Data to Quantify Annual Energy Use of Portable Air Conditioners

    SciTech Connect (OSTI)

    Burke, Thomas; Willem, Henry; Ni, Chun Chun; Stratton, Hannah; Chen, Yuting; Ganeshalingam, Mohan; Iyer, Maithili; Price, Sarah; Dunham, Camilla

    2014-12-01

    As many regions of the United States experience rising temperatures, consumers have come to rely increasingly on cooling appliances (including portable air conditioners) to provide a comfortable indoor temperature. Home occupants sometimes use a portable air conditioner (PAC) to maintain a desired indoor temperature in a single room or enclosed space. Although PACs in residential use are few compared to centrally installed and room air conditioning (AC) units, the past few years have witnessed an increase of PACs use throughout the United States. There is, however, little information and few research projects focused on the energy consumption and performance of PACs, particularly studies that collect information from field applications of PACs. The operation and energy consumption of PACs may differ among geographic locations and households, because of variations in cooling load, frequency, duration of use, and other user-selected settings. In addition, the performance of building envelope (thermal mass and air leakage) as well as inter-zonal mixing within the building would substantially influence the ability to control and maintain desirable indoor thermal conditions. Lawrence Berkeley National Laboratory (LBNL) conducted an initial field-metering study aimed at increasing the knowledge and data related to PAC operation and energy consumption in the United States.

  11. Development and Analysis of Desiccant Enhanced Evaporative Air Conditioner Prototype

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Development and Analysis of Desiccant Enhanced Evaporative Air Conditioner Prototype Eric Kozubal, Jason Woods, and Ron Judkoff Technical Report NREL/TP-5500-54755 April 2012 NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency & Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. National Renewable Energy Laboratory 15013 Denver West Parkway Golden, Colorado 80401 303-275-3000 * www.nrel.gov Contract No. DE-AC36-08GO28308

  12. Progress towards Managing Residential Electricity Demand: Impacts of Standards and Labeling for Refrigerators and Air Conditioners in India

    SciTech Connect (OSTI)

    McNeil, Michael A.; Iyer, Maithili

    2009-05-30

    The development of Energy Efficiency Standards and Labeling (EES&L) began in earnest in India in 2001 with the Energy Conservation Act and the establishment of the Indian Bureau of Energy Efficiency (BEE). The first main residential appliance to be targeted was refrigerators, soon to be followed by room air conditioners. Both of these appliances are of critical importance to India's residential electricity demand. About 15percent of Indian households own a refrigerator, and sales total about 4 million per year, but are growing. At the same time, the Indian refrigerator market has seen a strong trend towards larger and more consumptive frost-free units. Room air conditioners in India have traditionally been sold to commercial sector customers, but an increasing number are going to the residential sector. Room air conditioner sales growth in India peaked in the last few years at 20percent per year. In this paper, we perform an engineering-based analysis using data specific to Indian appliances. We evaluate costs and benefits to residential and commercial sector consumers from increased equipment costs and utility bill savings. The analysis finds that, while the BEE scheme presents net benefits to consumers, there remain opportunities for efficiency improvement that would optimize consumer benefits, according to Life Cycle Cost analysis. Due to the large and growing market for refrigerators and air conditioners in India, we forecast large impacts from the standards and labeling program as scheduled. By 2030, this program, if fully implemented would reduce Indian residential electricity consumption by 55 TWh. Overall savings through 2030 totals 385 TWh. Finally, while efficiency levels have been set for several years for refrigerators, labels and MEPS for these products remain voluntary. We therefore consider the negative impact of this delay of implementation to energy and financial savings achievable by 2030.

  13. DOE Orders AeroSys to Halt Distribution of Inefficient Air Conditioner and

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Heat Pump Models | Department of Energy Orders AeroSys to Halt Distribution of Inefficient Air Conditioner and Heat Pump Models DOE Orders AeroSys to Halt Distribution of Inefficient Air Conditioner and Heat Pump Models March 30, 2010 - 10:05am Addthis Today, the Department of Energy announced that it is requiring AeroSys, Inc. to stop distributing two product models - one air conditioner and one heat pump - that DOE testing found to consume more energy than allowed under federal efficiency

  14. Department of Energy Opens Appliance Standards Investigation for Certain Air Con International Air Conditioners and Heat Pumps

    Office of Energy Efficiency and Renewable Energy (EERE)

    WASHINGTON, DC - The U.S. Department of Energy announced today that it has opened an investigation to determine whether certain air conditioners and heat pump products manufactured by Air Con...

  15. Building America Top Innovations 2013 Profile – High-Efficiency Window Air Conditioners

    SciTech Connect (OSTI)

    none,

    2013-09-01

    This Top Innovation profile explains how comprehensive performance testing by the National Renewable Energy Laboratory led to simple, affordable methods that homeowners could employ for increasing the energy efficiency of window air conditioners.

  16. Stronger Manufacturers' Energy Efficiency Standards for Residential Air Conditioners Go Into Effect Today

    Broader source: Energy.gov [DOE]

    WASHINGTON, DC -- To increase the energy efficiency of residential air conditioners, the U.S. Department of Energy (DOE) has issued new manufacturing standards that go into effect  today, January...

  17. Improved Modeling of Residential Air Conditioners and Heat Pumps for Energy Calculations

    SciTech Connect (OSTI)

    Cutler, D.; Winkler, J.; Kruis, N.; Christensen, C.; Brendemuehl, M.

    2013-01-01

    This report presents improved air conditioner and heat pump modeling methods in the context of whole-building simulation tools, with the goal of enabling more accurate evaluation of cost effective equipment upgrade opportunities and efficiency improvements in residential buildings.

  18. Electrolux Gibson Air Conditioner and Equator Clothes Washer Fail DOE Energy Star Testing

    Broader source: Energy.gov [DOE]

    DOE testing in support of the ENERGY STAR program has revealed that an Electrolux Gibson air conditioner (model GAH105Q2T1) and an Equator clothes washer (model EZ 3720 CEE), both of which claimed...

  19. DOE Orders AeroSys to Halt Distribution of Inefficient Air Conditioner...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    and air conditioners last year, before beginning independent testing on 7 product models ... Read the full Notice of Noncompliance. Media contact(s): (202) 586-4940 Addthis Related ...

  20. Department of Energy Announces First Entry for Market- Driven High-Efficiency Commercial Air Conditioners Challenge

    Broader source: Energy.gov [DOE]

    DOE announces that it has received the first official submission by a manufacturer to a voluntary challenge for a new generation of high-efficiency cost-effective air conditioners for commercial buildings.

  1. Understanding Energy Impacts of Oversized Air Conditioners; NREL Highlights, Research & Development, NREL (National Renewable Energy Laboratory)

    SciTech Connect (OSTI)

    2015-06-01

    This NREL highlight describes a simulation-based study that analyzes the energy impacts of oversized residential air conditioners. Researchers found that, if parasitic power losses are minimal, there is very little increase in energy use for oversizing an air conditioner. The research demonstrates that new residential air conditioners can be sized primarily based on comfort considerations, because capacity typically has minimal impact on energy efficiency. The results of this research can be useful for contractors and homeowners when choosing a new air conditioner or heat pump during retrofits of existing homes. If the selected unit has a crankcase heater, performing proper load calculations to be sure the new unit is not oversized will help avoid excessive energy use.

  2. Ex Parte Communication on Central Air-Conditioner Test Procedure - ICM

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Issues | Department of Energy Procedure - ICM Issues Ex Parte Communication on Central Air-Conditioner Test Procedure - ICM Issues On October 8, 2015, AHRI staff and Independent Coil Manufacturer (ICM) Representatives met with a representative from the Department of Energy (DOE) to discuss proposed amended test procedures for central air conditioners and how they would impact ICM manufacturers. 10_8_15AHRI Ex Parte Memo ICM (53.24 KB) More Documents & Publications Ex Parte Communication

  3. DOE Requires Manufacturers to Halt Sales of Heat Pumps and Air Conditioners

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Violating Minimum Appliance Standards | Department of Energy Manufacturers to Halt Sales of Heat Pumps and Air Conditioners Violating Minimum Appliance Standards DOE Requires Manufacturers to Halt Sales of Heat Pumps and Air Conditioners Violating Minimum Appliance Standards June 3, 2010 - 2:17pm Addthis Today, the Department of Energy announced that three manufacturers -- Aspen Manufacturing, Inc., Summit Manufacturing, and Advanced Distributor Products -- must stop distributing 61 heat

  4. DOE Orders AeroSys to Halt Distribution of Inefficient Air Conditioner and

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Heat Pump Models Shown to Violate Minimum Efficiency Standards | Department of Energy AeroSys to Halt Distribution of Inefficient Air Conditioner and Heat Pump Models Shown to Violate Minimum Efficiency Standards DOE Orders AeroSys to Halt Distribution of Inefficient Air Conditioner and Heat Pump Models Shown to Violate Minimum Efficiency Standards March 30, 2010 - 12:00am Addthis WASHINGTON, DC - Today, the Department of Energy announced that it is requiring AeroSys, Inc. to stop

  5. DOE Requires Manufacturers to Halt Sales of Heat Pumps and Air Conditioners

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Violating Minimum Appliance Standards | Department of Energy Requires Manufacturers to Halt Sales of Heat Pumps and Air Conditioners Violating Minimum Appliance Standards DOE Requires Manufacturers to Halt Sales of Heat Pumps and Air Conditioners Violating Minimum Appliance Standards June 3, 2010 - 12:00am Addthis Washington, DC - Today, the Department of Energy announced that three manufacturers -- Aspen Manufacturing, Inc., Summit Manufacturing, and Advanced Distributor Products -- must

  6. Swozzle based burner tube premixer including inlet air conditioner for low emissions combustion

    DOE Patents [OSTI]

    Tuthill, Richard Sterling; Bechtel, II, William Theodore; Benoit, Jeffrey Arthur; Black, Stephen Hugh; Bland, Robert James; DeLeonardo, Guy Wayne; Meyer, Stefan Martin; Taura, Joseph Charles; Battaglioli, John Luigi

    2002-01-01

    A burner for use in a combustion system of a heavy-duty industrial gas turbine includes a fuel/air premixer having an air inlet, a fuel inlet, and an annular mixing passage. The fuel/air premixer mixes fuel and air into a uniform mixture for injection into a combustor reaction zone. The burner also includes an inlet flow conditioner disposed at the air inlet of the fuel/air premixer for controlling a radial and circumferential distribution of incoming air. The pattern of perforations in the inlet flow conditioner is designed such that a uniform air flow distribution is produced at the swirler inlet annulus in both the radial and circumference directions. The premixer includes a swozzle assembly having a series of preferably air foil shaped turning vanes that impart swirl to the airflow entering via the inlet flow conditioner. Each air foil contains internal fuel flow passages that introduce natural gas fuel into the air stream via fuel metering holes that pass through the walls of the air foil shaped turning vanes. By injecting fuel in this manner, an aerodynamically clean flow field is maintained throughout the premixer. By injecting fuel via two separate passages, the fuel/air mixture strength distribution can be controlled in the radial direction to obtain optimum radial concentration profiles for control of emissions, lean blow outs, and combustion driven dynamic pressure activity as machine and combustor load are varied.

  7. 2014-10-30 Issuance: Energy Conservation Program: Energy Conservation Standards for Residential Central Air Conditioners and Heat Pumps, Request for Information

    Office of Energy Efficiency and Renewable Energy (EERE)

    Energy Conservation Program: Energy Conservation Standards for Residential Central Air Conditioners and Heat Pumps, Request for Information

  8. ISSUANCE 2015-08-21: Energy Conservation Program: Test Procedures for Central Air Conditioners and Heat Pumps, Supplemental Notice of Proposed Rulemaking

    Office of Energy Efficiency and Renewable Energy (EERE)

    Energy Conservation Program: Test Procedures for Central Air Conditioners and Heat Pumps, Supplemental Notice of Proposed Rulemaking (version2)

  9. ISSUANCE 2015-06-08: Energy Conservation Program: Test Procedures for Packaged Terminal Air Conditioners and Packaged Terminal Heat Pumps, Final Rule

    Office of Energy Efficiency and Renewable Energy (EERE)

    Energy Conservation Program: Test Procedures for Packaged Terminal Air Conditioners and Packaged Terminal Heat Pumps, Final Rule

  10. ISSUANCE 2016-08-01: Energy Conservation Program: Corrction; Test Procedures for Central Air Conditioners and Heat Pumps, Supplemental Notice of Proposed Rulemaking

    Broader source: Energy.gov [DOE]

    Energy Conservation Program: Test Procedures for Central Air Conditioners and Heat Pumps, Supplemental Notice of Proposed Rulemaking

  11. ISSUANCE 2016-08-01: Energy Conservation Program: Test Procedures for Central Air Conditioners and Heat Pumps, Supplemental Notice of Proposed Rulemaking

    Office of Energy Efficiency and Renewable Energy (EERE)

    Energy Conservation Program: Test Procedures for Central Air Conditioners and Heat Pumps, Supplemental Notice of Proposed Rulemaking

  12. ISSUANCE 2015-06-30: Energy Conservation Program: Energy Conservation Standards for Packaged Terminal Air Conditioners and Packaged Terminal Heat Pumps, Final Rule

    Broader source: Energy.gov [DOE]

    Energy Conservation Program: Energy Conservation Standards for Packaged Terminal Air Conditioners and Packaged Terminal Heat Pumps, Final Rule

  13. ISSUANCE 2015-8-28: Energy Conservation Program: Energy Conservation Standards for Single Package Vertical Air Conditioners and Single Package Vertical Heat Pumps, Final Rule

    Broader source: Energy.gov [DOE]

    Energy Conservation Program: Energy Conservation Standards for Single Package Vertical Air Conditioners and Single Package Vertical Heat Pumps, Final Rule

  14. Improved Modeling of Residential Air Conditioners and Heat Pumps for Energy Calculations

    SciTech Connect (OSTI)

    Cutler, D.; Winkler, J.; Kruis, N.; Christensen, C.; Brandemuehl, M.

    2013-01-01

    This report presents improved air conditioner and heat pump modeling methods in the context of whole-building simulation tools, with the goal of enabling more accurate evaluation of cost-effective equipment upgrade opportunities and efficiency improvements in residential buildings.

  15. List of Room Air Conditioners Incentives | Open Energy Information

    Open Energy Info (EERE)

    Active AEP Ohio - Commercial New Construction Energy Efficiency Rebate Program (Ohio) Utility Rebate Program Ohio Commercial Industrial Local Government Municipal Utility...

  16. Variable Speed Fan Retrofits for Computer Room Air Conditioners

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Brian Fortenbery Synapsense: Garret Smith, Patricia Nealon Vigilent: Corinne Vita ... Figure 1. Fan power as a function of speed (the "cube law"). (Credit: Smith, 2013) It ...

  17. 13 SEER Standard for Central Air Conditioners and Heat Pumps (released in AEO2005)

    Reports and Publications (EIA)

    2005-01-01

    In January 2004, after years of litigation in a case that pitted environmental groups and Attorneys General from 10 states against the U.S. Secretary of Energy, the U.S. Court of Appeals for the Second Circuit reestablished the central air conditioner and heat pump standard originally set in January 200. The Courts ruling, which struck down a May 2002 rollback of the 2001 standard to a 12 Seasonal Energy Efficiency Ratio (SEER) mandates that all new central air conditioners and heat pumps meet a 13 SEER standard by January 2006, requiring a 30% increase in efficiency relative to current law. The Annual Energy Outlook 2005 reference case incorporates the 13 SEER standard as mandated by the Courts ruling.

  18. Energy Impacts of Oversized Residential Air Conditioners Simulation Study of Retrofit Sequence Impacts

    SciTech Connect (OSTI)

    Booten, C.; Christensen, C.; Winkler, J.

    2014-11-01

    This research addresses the question of what are the energy consequences for oversizing of an air conditioner in a home, which can result in significant energy penalties. However, the reason for this was due to crankcase heaters and not due to cycling performance of the AC, and is only valid for a particular set of assumptions. Adding or removing individual characteristics, such as ducts or crankcase heaters, can have measurable impacts on energy use. However, with all other home characteristics held constant, oversizing the AC generally has a small effect on cooling energy use, even if the cycling performance of the unit is poor. The relevant aspects of air conditioner modeling are discussed to illustrate the effects of the cycling loss coefficient, Cd, capacity, climate, ducts and parasitic losses such as crankcase heaters.

  19. Stirling Air Conditioner for Compact Cooling (Program Document...

    Office of Scientific and Technical Information (OSTI)

    The Stirling cycle system is a type of air conditioning system that uses a motor with a piston to remove heat to the outside atmosphere using a gas refrigerant. To date, Stirling ...

  20. Measure Guideline: Air Conditioner Diagnostics, Maintenance, and Replacement

    SciTech Connect (OSTI)

    Springer, D.; Dakin, B.

    2013-03-01

    This guideline responds to the need for an efficient means of identifying, diagnosing, and repairing faults in air conditioning systems in existing homes that are undergoing energy upgrades. Inadequate airflow due to constricted ducts or undersized filters, improper refrigerant charge, and other system defects can be corrected at a fraction of the cost of equipment replacement and can yield significant savings. The guideline presents a two-step approach to diagnostics and repair.

  1. Measure Guideline. Air Conditioner Diagnostics, Maintenance, and Replacement

    SciTech Connect (OSTI)

    Springer, David; Dakin, Bill

    2013-03-01

    This guideline responds to the need for an efficient means of identifying, diagnosing, and repairing faults in air conditioning systems in existing homes that are undergoing energy upgrades. Inadequate airflow due to constricted ducts or undersized filters, improper refrigerant charge, and other system defects can be corrected at a fraction of the cost of equipment replacement and can yield significant savings. The guideline presents a two-step approach to diagnostics and repair.

  2. ISSUANCE 2015-06-30: Appliance Standards and Rulemaking Federal Advisory Committee: Notice of Intent to Establish the Central Air Conditioners and Heat Pumps Working Group

    Broader source: Energy.gov [DOE]

    Appliance Standards and Rulemaking Federal Advisory Committee: Notice of Intent to Establish the Central Air Conditioners and Heat Pumps Working Group

  3. ISSUANCE 2016-04-11: Energy Conservation Program for Consumer Products and Certain Commercial and Industrial Equipment: Determination of Portable Air Conditioners as a Covered Consumer Product

    Office of Energy Efficiency and Renewable Energy (EERE)

    Energy Conservation Program for Consumer Products and Certain Commercial and Industrial Equipment: Determination of Portable Air Conditioners as a Covered Consumer Product

  4. Air Sample Conditioner Helps the Waste Treatment Plant Meet Emissions Standards

    SciTech Connect (OSTI)

    Glissmeyer, John A.; Flaherty, Julia E.; Pekour, Mikhail S.

    2014-12-02

    The air in three of the Hanford Site Waste Treatment and Immobilization Plant (WTP) melter off-gas discharge stacks will be hot and humid after passing through the train of emission abatement equipment. The off-gas temperature and humidity levels will be incompatible with the airborne emissions monitoring equipment required for this type of stack. To facilitate sampling from these facilities, an air sample conditioner system will be installed to introduce cool, dry air into the sample stream to reduce the temperature and dew point. This will avoid thermal damage to the instrumentation and problematic condensation. The complete sample transport system must also deliver at least 50% of the particles in the sample airstream to the sample collection and on-line analysis equipment. The primary components of the sample conditioning system were tested in a laboratory setting. The sample conditioner itself is based on a commercially-available porous tube filter design. It consists of a porous sintered metal tube inside a coaxial metal jacket. The hot gas sample stream passes axially through the porous tube, and the dry, cool air is injected into the jacket and through the porous wall of the inner tube, creating an effective sample diluter. The dilution and sample air mix along the entire length of the porous tube, thereby simultaneously reducing the dew point and temperature of the mixed sample stream. Furthermore, because the dilution air enters through the porous tube wall, the sample stream does not come in contact with the porous wall and particle deposition is reduced in this part of the sampling system. Tests were performed with an environmental chamber to supply air with the temperature and humidity needed to simulate the off-gas conditions. Air from the chamber was passed through the conditioning system to test its ability to reduce the temperature and dew point of the sample stream. To measure particle deposition, oil droplets in the range of 9 to 11 micrometer

  5. 2014-05-05 Issuance: Test Procedure for Portable Air Conditioners; Notice of Data Availability

    Office of Energy Efficiency and Renewable Energy (EERE)

    This document is a pre-publication Federal Register notice of data availabilty regarding test procedures for portable air conditioners, as issued by the Deputy Assistant Secretary for Energy Efficiency on May 5, 2014. Though it is not intended or expected, should any discrepancy occur between the document posted here and the document published in the Federal Register, the Federal Register publication controls. This document is being made available through the Internet solely as a means to facilitate the public's access to this document.

  6. Energy Impacts of Oversized Residential Air Conditioners -- Simulation Study of Retrofit Sequence Impacts

    SciTech Connect (OSTI)

    Booten, C.; Christensen, C.; Winkler, J.

    2014-11-01

    This research addresses the question of what are the energy consequences for oversizing of an air conditioner in a home. Conventional wisdom holds that oversizing the AC results in significant energy penalties. However, the reason for this was shown to be due to crankcase heaters and not due to cycling performance of the AC, and is only valid for a particular set of assumptions. Adding or removing individual characteristics, such as ducts or crankcase heaters, can have measurable impacts on energy use. However, with all other home characteristics held constant, oversizing the AC generally has a small effect on cooling energy use, even if the cycling performance of the unit is poor. The relevant aspects of air conditioner modeling are discussed to illustrate the effects of the cycling loss coefficient, Cd, capacity, climate, ducts and parasitic losses such as crankcase heaters. A case study of a typical 1960's vintage home demonstrates results in the context of whole building simulations using EnergyPlus.

  7. Energy savings and economics of advanced control strategies for packaged air conditioners with gas heat

    SciTech Connect (OSTI)

    Wang, Weimin; Katipamula, Srinivas; Huang, Yunzhi; Brambley, Michael R.

    2013-10-01

    This paper presents an evaluation of the potential energy savings from adding advanced control to existing packaged air conditioners. Advanced control options include air-side economizer, multi-speed fan control, demand control ventilation and staged cooling. The energy and cost savings from the different control strategies individually and in combination are estimated using the EnergyPlus detailed energy simulation program for four building types, namely, a small office building, a stand-alone retail building, a strip mall building and a supermarket building. For each of the four building types, the simulation was run for 16 locations covering all 15 climate zones in the U.S. The maximum installed cost of a replacement controller that provides acceptable payback periods to owners is estimated.

  8. EA-1892: Direct Final Rule Energy Conservation Standards for Residential Furnaces and Residential Central Air Conditioners & Heat Pumps

    Broader source: Energy.gov [DOE]

    This EA evaluates the environmental impacts of a proposal to adopt energy conservation standards for various consumer products and certain commercial and industrial equipment, including residential furnaces and residential air conditioners and heat pumps, as required by the Energy Policy and Conservation Act, as amended (42 U.S.C. 6291 et seq.)

  9. Life-cycle cost and payback period analysis for commercial unitary air conditioners

    SciTech Connect (OSTI)

    Rosenquist, Greg; Coughlin, Katie; Dale, Larry; McMahon, James; Meyers, Steve

    2004-03-31

    This report describes an analysis of the economic impacts of possible energy efficiency standards for commercial unitary air conditioners and heat pumps on individual customers in terms of two metrics: life-cycle cost (LCC) and payback period (PBP). For each of the two equipment classes considered, the 11.5 EER provides the largest mean LCC savings. The results show how the savings vary among customers facing different electricity prices and other conditions. At 11.5 EER, at least 80% of the users achieve a positive LCC savings. At 12.0 EER, the maximum efficiency analyzed, mean LCC savings are lower but still positive. For the {ge} $65,000 Btu/h to <135,000 Btu/h equipment class, 59% of users achieve a positive LCC savings. For the $135,000 Btu/h to <240,000 Btu/h equipment class, 91% of users achieve a positive LCC savings.

  10. Room air monitor for radioactive aerosols

    DOE Patents [OSTI]

    Balmer, David K.; Tyree, William H.

    1989-04-11

    A housing assembly for use with a room air monitor for simultaneous collection and counting of suspended particles includes a casing containing a combination detector-preamplifier system at one end, a filter system at the other end, and an air flow system consisting of an air inlet formed in the casing between the detector-preamplifier system and the filter system and an air passageway extending from the air inlet through the casing and out the end opposite the detector-preamplifier combination. The filter system collects suspended particles transported directly through the housing by means of the air flow system, and these particles are detected and examined for radioactivity by the detector-pre The U.S. Government has rights in this invention pursuant to Contract No. DE-AC04-76DP03533 between the Department of Energy and Rockwell International Corporation.

  11. Room air monitor for radioactive aerosols

    DOE Patents [OSTI]

    Balmer, D.K.; Tyree, W.H.

    1987-03-23

    A housing assembly for use with a room air monitor for simultaneous collection and counting of suspended particles includes a casing containing a combination detector-preamplifier system at one end, a filter system at the other end, and an air flow system consisting of an air inlet formed in the casing between the detector-preamplifier system and the filter system and an air passageway extending from the air inlet through the casing and out the end opposite the detector-preamplifier combination. The filter system collects suspended particles transported directly through the housing by means of the air flow system, and these particles are detected and examined for radioactivity by the detector-preamplifier combination. 2 figs.

  12. Field evaluation of advanced controls for the retrofit of packaged air conditioners and heat pumps

    SciTech Connect (OSTI)

    Wang, Weimin; Katipamula, Srinivas; Ngo, Hung; Underhill, Ronald M.; Taasevigen, Danny J.; Lutes, Robert G.

    2015-09-01

    This paper documents the magnitude of energy savings achievable in the field by retrofitting existing packaged rooftop units (RTUs) with advanced control strategies not ordinarily used for RTUs. A total of 66 RTUs on 8 different buildings were retrofitted with a commercially available advanced controller for improving RTU operational efficiency. The controller features enhanced air-side economizer control, multi-speed fan control, and demand controlled ventilation. Of the 66 RTUs, 18 are packaged heat pumps and the rest are packaged air conditioners with gas heat. The eight buildings cover four building types and four climate conditions. Based on the data collected for about a whole year, the advanced controller reduced the normalized annual RTU energy consumption between 22% and 90%, with an average of 57% for all RTUs. The average fractional savings uncertainty was 12% at 95% confidence level. Normalized annual electricity savings were in the range between 0.47 kWh/h (kWh per hour of RTU operation) and 7.21 kWh/h, with an average of 2.39 kWh/h. RTUs greater than 53 kW and runtime greater than 14 hours per day had payback periods less than 3 years even at $0.05/kWh.

  13. 2014-03-06 Issuance: Test Procedures for Packaged Terminal Air Conditioners and Packaged Terminal Heat Pumps; Notice of Proposed Rulemaking

    Broader source: Energy.gov [DOE]

    This document is a pre-publication Federal Register notice of proposed rulemaking regarding test procedures for packaged terminal air conditioners and packaged terminal heat pumps, as issued by the Deputy Assistant Secretary on March 6, 2014.

  14. DOE Takes Action to Stop the Sales of Air-Con Air Conditioner...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    ... Follow Secretary Chu on his Facebook page. Media contact(s): (202) 586-4940 Addthis Related Articles DOE Requires Air-Con International to Cease Sales of Inefficient Air ...

  15. The Oklahoma Field Test: Air-Conditioning Electricity Savings from Standard Energy Conservation Measures, Radiant Barriers, and High-Efficiency Window Air Conditioners

    SciTech Connect (OSTI)

    Ternes, M.P.

    1992-01-01

    A field test involving 104 houses was performed in Tulsa, Oklahoma, to measure the air-conditioning electricity consumption of low-income houses equipped with window air conditioners, the reduction in this electricity consumption attributed to the installation of energy conservation measures (ECMs) as typically installed under the Oklahoma Weatherization Assistance Program (WAP), and the reduction achieved by the replacement of low-efficiency window air conditioners with high-efficiency units and the installation of attic radiant barriers. Air-conditioning electricity consumption and indoor temperature were monitored weekly during the pre-weatherization period (June to September 1988) and post-weatherization period (May to September 1989). House energy consumption models and regression analyses were used to normalize the air-conditioning electricity savings to average outdoor temperature conditions and the pre-weatherization indoor temperature of each house. The average measured pre-weatherization air-conditioning electricity consumption was 1664 kWh/year ($119/year). Ten percent of the houses used less than 250 kWh/year, while another 10% used more than 3000 kWh/year. An average reduction in air-conditioning electricity consumption of 535 kWh/year ($38/year and 28% of pre-weatherization consumption) was obtained from replacement of one low-efficiency window air conditioner (EER less than 7.0) per house with a high-efficiency unit (EER greater than 9.0). For approximately the same cost, savings tripled to 1503 kWh/year ($107/year and 41% of pre-weatherization consumption) in those houses with initial air-conditioning electricity consumption greater than 2750 kWh/year. For these houses, replacement of a low-efficiency air conditioner with a high-efficiency unit was cost effective using the incremental cost of installing a new unit now rather than later; the average installation cost for these houses under a weatherization program was estimated to be $786. The

  16. The Oklahoma Field Test: Air-conditioning electricity savings from standard energy conservation measures, radiant barriers, and high-efficiency window air conditioners

    SciTech Connect (OSTI)

    Ternes, M.P.; Levins, W.P.

    1992-08-01

    A field test Involving 104 houses was performed in Tulsa, Oklahoma, to measure the air-conditioning electricity consumption of low-income houses equipped with window air conditioners, the reduction in this electricity consumption attributed to the installation of energy conservation measures (ECMS) as typically installed under the Oklahoma Weatherization Assistance Program (WAP), and the reduction achieved by the replacement of low-efficiency window air conditioners with high-efficiency units and the installation of attic radiant barriers. Air-conditioning electricity consumption and indoor temperature were monitored weekly during the pre-weatherization period (June to September 1988) and post-weatherization period (May to September 1989). House energy consumption models and regression analyses were used to normalize the air-conditioning electricity savings to average outdoor temperature conditions and the pre-weatherization indoor temperature of each house. The following conclusions were drawn from the study: (1) programs directed at reducing air-conditioning electricity consumption should be targeted at clients with high consumption to improve cost effectiveness; (2) replacing low-efficiency air conditioners with high-efficiency units should be considered an option in a weatherization program directed at reducing air-conditioning electricity consumption; (3) ECMs currently being installed under the Oklahoma WAP (chosen based on effectiveness at reducing space-heating energy consumption) should continue to be justified based on their space-heating energy savings potential only; and (4) attic radiant barriers should not be included in the Oklahoma WAP if alternatives with verified savings are available or until further testing demonstrates energy savings or other benefits in this typo of housing.

  17. Improving Best Air Conditioner Efficiency by 20-30% through a High Efficiency Fan and Diffuser Stage Coupled with an Evaporative Condenser Pre-Cooler

    SciTech Connect (OSTI)

    Parker, Danny S; Sherwin, John R; Raustad, Richard

    2014-04-10

    The Florida Solar Energy Center (FSEC) conducted a research project to improve the best residential air conditioner condenser technology currently available on the market by retrofitting a commercially-available unit with both a high efficiency fan system and an evaporative pre-cooler. The objective was to integrate these two concepts to achieve an ultra-efficient residential air conditioner design. The project produced a working prototype that was 30% more efficient compared to the best currently-available technologies; the peak the energy efficiency ratio (EER) was improved by 41%. Efficiency at the Air-Conditioning and Refrigeration Institute (ARI) standard B-condition which is used to estimate seasonal energy efficiency ratio (SEER), was raised from a nominal 21 Btu/Wh to 32 Btu/Wh.

  18. Alternative Refrigerant Evaluation for High-Ambient Temperature Environments: R-22 and R-410A Alternatives for Mini-Split Air Conditioners

    SciTech Connect (OSTI)

    Abdelaziz, Omar; Munk, Jeffrey D.; Shrestha, Som S.; Linkous, Randall Lee; Goetzler, William; Guernsey, Matt; Kassuga, Theo

    2015-08-01

    The Oak Ridge National Laboratory (ORNL) High-Ambient Temperature Testing Program for Low-GWP Refrigerants aims to develop an understanding of the performance of low-Global Warming Potential (low-GWP) alternatives to Hydrochlorofluorocarbon (HCFC) and Hydrofluorocarbon (HFC) refrigerants in mini-split air conditioners under high ambient temperature conditions. This interim working paper describes the parties involved, the alternative refrigerants selection process, the test procedures, and the preliminary results.

  19. Alternative Refrigerant Evaluation for High-Ambient-Temperature Environments: R-22 and R-410A Alternatives for Mini-Split Air Conditioners

    SciTech Connect (OSTI)

    Abdelaziz, Omar; Shrestha, Som S.; Munk, Jeffrey D.; Linkous, Randall Lee; Goetzler, William; Guernsey, Matt; Kassuga, Theo

    2015-10-01

    The Oak Ridge National Laboratory (ORNL) High-Ambient-Temperature Evaluation Program for low– global warming potential (Low-GWP) Refrigerants aims to develop an understanding of the performance of low-GWP alternative refrigerants to hydrochlorofluorocarbon (HCFC) and hydrofluorocarbon (HFC) refrigerants in mini-split air conditioners under high-ambient-temperature conditions. This final report describes the parties involved, the alternative refrigerant selection process, the test procedures, and the final results.

  20. Improving the Operating Efficiency of Packaged Air Conditioners and Heat Pumps

    SciTech Connect (OSTI)

    Katipamula, Srinivas; Wang, Weimin; Vowles, Mira

    2014-03-10

    This article discusses several control strategies that can significantly reduce energy consumption associated with packaged rooftop units RTUs). Although all of the considered strategies are widely used in built-up air-handing units, they are not commonly used in existing RTUs. Both simulation and field evaluations show that adding these control strategies to existing RTUs can reduce their energy consumption by between 30% and 60%.

  1. Control room envelope unfiltered air inleakage test protocols

    SciTech Connect (OSTI)

    Lagus, P.L.; Grot, R.A.

    1997-08-01

    In 1983, the Advisory Committee on Reactor Safeguards (ACRS) recommended that the US NRC develop a control room HVAC performance testing protocol. To date no such protocol has been forthcoming. Beginning in mid-1994, an effort was funded by NRC under a Small Business Innovation Research (SBIR) grant to develop several simplified test protocols based on the principles of tracer gas testing in order to measure the total unfiltered inleakage entering a CRE during emergency mode operation of the control room ventilation system. These would allow accurate assessment of unfiltered air inleakage as required in SRP 6.4. The continuing lack of a standard protocol is unfortunate since one of the significant parameters required to calculate operator dose is the amount of unfiltered air inleakage into the control room. Often it is assumed that, if the Control Room Envelope (CRE) is maintained at +1/8 in. w.g. differential pressure relative to the surroundings, no significant unfiltered inleakage can occur it is further assumed that inleakage due to door openings is the only source of unfiltered air. 23 refs., 13 figs., 2 tabs.

  2. Local Voltage Support from Distributed Energy Resources to Prevent Air Conditioner Motor Stalling

    SciTech Connect (OSTI)

    Baone, Chaitanya A; Xu, Yan; Kueck, John D

    2010-01-01

    Microgrid voltage collapse often happens when there is a high percentage of low inertia air-conditioning (AC) motors in the power systems. The stalling of the AC motors results in Fault Induced Delayed Voltage Recovery (FIDVR). A hybrid load model including typical building loads, AC motor loads, and other induction motor loads is built to simulate the motoring stalling phenomena. Furthermore, distributed energy resources (DE) with local voltage support capability are utilized to boost the local bus voltage during a fault, and prevent the motor stalling. The simulation results are presented. The analysis of the simulation results show that local voltage support from multiple DEs can effectively and economically solve the microgrid voltage collapse problem.

  3. High-Efficiency Variable Dehumidification for Air Conditioners: ClimaStat

    SciTech Connect (OSTI)

    West, Michael K., Ph.D. P.E.

    2006-04-30

    Advantek has successfully developed the first low-cost technology offering significant improvement in both Seasonal Energy Efficiency (SEER) and comfort & humidity control. A production prototype was constructed based on a commercial roof top package unit. The prototype was operated under a wide range of psychrometric conditions. Test data was analyzed to identify refinements, which were implemented to further improve performance in an iterative procedure that resulted in a fully optimized technology. The latest results show an increase in dehumidification capacity of 56% with ClimaStat™ in full dehumidify mode vs. with ClimaStat™ off. Dehumidification improved by a factor of 1.7 to 1.9 – meaning that the unit can provide nearly twice the water removal per unit of sensible cooling load. Performance testing results have been consistent, verifiable and repeatable. . ClimaStat™ cost-effectively controls humidity on-demand and improves indoor air quality while reducing annual energy costs. Test data clearly shows that ClimaStat™ costs 20% to 60% less to operate. ClimaStat™ is ready for market.

  4. 2014-08-19 Issuance Appliance Standards and Rulemaking Federal Advisory Committee (ASRAC)- Central Air Conditioner Regional Standards Enforcement Working Group; Notice of Open Meetings

    Broader source: Energy.gov [DOE]

    This document is a pre-publication Federal Registe notice of open meetings regarding the Appliance Standards and Rulemaking Federal Advisory Committee (ASRAC) - Central Air Conditioner Regional Standards Enforcement Working Group, as issued by the Deputy Assistant Secretary for Energy Efficiency on August 19, 2014. Though it is not intended or expected, should any discrepancy occur between the document posted here and the document published in the Federal Register, the Federal Register publication controls. This document is being made available through the Internet solely as a means to facilitate the public's access to this document.

  5. 2015-02-13 Issuance: Energy Conservation Standards for Portable Air Conditioners; Notice of Public Meeting and Availability of the Preliminary Technical Support Document

    Broader source: Energy.gov [DOE]

    This document is a pre-publication Federal Register notice of public meeting regarding energy conservation standards for portable air conditioners, as issued by the Deputy Assistant Secretary for Energy Efficiency on February 13, 2015. Though it is not intended or expected, should any discrepancy occur between the document posted here and the document published in the Federal Register, the Federal Register publication controls. This document is being made available through the Internet solely as a means to facilitate the public's access to this document.

  6. Properties and Cycle Performance of Refrigerant Blends Operating Near and Above the Refrigerant Critical Point, Task 2: Air Conditioner System Study

    SciTech Connect (OSTI)

    Piotr A. Domanski; W. Vance Payne

    2002-10-31

    The main goal of this project was to investigate and compare the performance of an R410A air conditioner to that of an R22 air conditioner, with specific interest in performance at high ambient temperatures at which the condenser of the R410A system may be operating above the refrigerant's critical point. Part 1 of this project consisted of conducting comprehensive measurements of thermophysical for refrigerant R125 and refrigerant blends R410A and R507A and developing new equation of state formulations and mixture models for predicting thermophysical properties of HFC refrigerant blends. Part 2 of this project conducted performance measurements of split-system, 3-ton R22 and R410A residential air conditioners in the 80 to 135 F (27.8 to 57.2 C) outdoor temperature range and development of a system performance model. The performance data was used in preparing a beta version of EVAP-COND, a windows-based simulation package for predicting performance of finned-tube evaporators and condensers. The modeling portion of this project also included the formulation of a model for an air-conditioner equipped with a thermal expansion valve (TXV). Capacity and energy efficiency ratio (EER) were measured and compared. The R22 system's performance was measured over the outdoor ambient temperature range of 80 to 135 F (27.8 to 57.2 C). The same test range was planned for the R410A system. However, the compressor's safety system cut off the compressor at the 135.0 F (57.2 C) test temperature. The highest measurement on this system was at 130.0 F (54.4 C). Subsequently, a custom-manufactured R410A compressor with a disabled safety system and a more powerful motor was installed and performance was measured at outdoor temperatures up to 155.0 F (68.3 C). Both systems had similar capacity and EER performance at 82.0 F (27.8 C). The capacity and EER degradation of both systems were nearly linearly dependent with rising ambient outdoor ambient test temperatures. The performance

  7. 2014-08-28 Issuance: Energy Conservation Standards for Packaged Terminal Air Conditioners and Packaged Terminal Heat Pumps; Notice of Proposed Rulemaking and Public Meeting

    Office of Energy Efficiency and Renewable Energy (EERE)

    This document is a pre-publication Federal Register notice of proposed rulemaking and public meeting regarding energy conservation standards for packaged terminal air conditioners and packaged terminal heat pumps, as issued by the Assistant Secretary for Energy Efficiency and Renewable Energy on August 28, 2014. Though it is not intended or expected, should any discrepancy occur between the document posted here and the document published in the Federal Register, the Federal Register publication controls. This document is being made available through the Internet solely as a means to facilitate the public's access to this document.

  8. Distribution and Room Air Mixing Risks to Retrofitted Homes

    SciTech Connect (OSTI)

    Burdick, A.

    2014-12-01

    Energy efficiency upgrades reduce heating and cooling loads on a house. With enough load reduction and if the HVAC system warrants replacement, the HVAC system is often upgraded with a more efficient, lower capacity system that meets the loads of the upgraded house. For a single-story house with ceiling supply air diffusers, ducts are often removed and upgraded. For houses with ducts that are embedded in walls, the cost of demolition precludes the replacement of ducts. The challenge with the use of existing ducts is that the reduced airflow creates a decreased throw at the supply registers, and the supply air and room air do not mix well, leading to potential thermal comfort complaints. This project investigates this retrofit scenario. The issues and solutions discussed here are relevant to all climate zones, with emphasis on climates that require cooling.

  9. Distribution and Room Air Mixing Risks to Retrofitted Homes

    SciTech Connect (OSTI)

    Burdick, A.

    2014-12-01

    ​Energy efficiency upgrades reduce heating and cooling loads on a house. With enough load reduction and if the HVAC system warrants replacement, the HVAC system is often upgraded with a more efficient, lower capacity system that meets the loads of the upgraded house. For a single-story house with ceiling supply air diffusers, ducts are often removed and upgraded. For houses with ducts that are embedded in walls, the cost of demolition precludes the replacement of ducts. The challenge with the use of existing ducts is that the reduced airflow creates a decreased throw at the supply registers, and the supply air and room air do not mix well, leading to potential thermal comfort complaints. This project investigates this retrofit scenario. The issues and solutions discussed here are relevant to all climate zones, with emphasis on climates that require cooling.

  10. 2015-03-24 Issuance: ASRAC; Notice of Intent to Establish the Commercial Package Air Conditioners and Heat Pumps and Commercial Warm Air Furnaces Working Group to Negotiate Potential Energy Conservation Standards

    Broader source: Energy.gov [DOE]

    This document is a pre-publication Federal Register Notice of Intent regarding potential Energy Conservation Standards for Commercial Package Air Conditioners and Heat Pumps and Commercial Warm Air Furnaces, as issued by the Deputy Assistant Secretary for Energy Efficiency on March 24, 2015. Though it is not intended or expected, should any discrepancy occur between the document posted here and the document published in the Federal Register, the Federal Register publication controls. This document is being made available through the Internet solely as a means to facilitate the public's access to this document.

  11. DOE Requires Air-Con International to Cease Sales of Inefficient...

    Energy Savers [EERE]

    Air-Con International to Cease Sales of Inefficient Air Conditioners and Proposes Penalties DOE Requires Air-Con International to Cease Sales of Inefficient Air Conditioners and ...

  12. Solar-Powered, Liquid-Desiccant Air Conditioner for Low-Electricity Humidity Control: Report and Summary Report

    SciTech Connect (OSTI)

    Dean, J.; Kozubal, E.; Herrmann, L.; Miller, J.; Lowenstein, A.; Barker, G.; Slayzak, S.

    2012-11-01

    The primary objective of this project was to demonstrate the capabilities of a new high-performance, liquid-desiccant dedicated outdoor air system (DOAS) to enhance cooling efficiency and comfort in humid climates while substantially reducing electric peak demand at Tyndall Air Force Base (AFB), which is 12 miles east of Panama City, Florida.

  13. Technology Solutions Case Study: A Homeowner’s Guide to Window Air Conditioner Installation for Efficiency and Comfort

    SciTech Connect (OSTI)

    C. Booten

    2013-06-01

    This fact sheet offers a step-by-step guide to proper installation of window air conditioning units, in order to improve energy efficiency, cost savings, and comfort for homeowners.

  14. Laser sheet light flow visualization for evaluating room air flowsfrom Registers

    SciTech Connect (OSTI)

    Walker, Iain S.; Claret, Valerie; Smith, Brian

    2006-04-01

    Forced air heating and cooling systems and whole house ventilation systems deliver air to individual rooms in a house via supply registers located on walls ceilings or floors; and occasionally less straightforward locations like toe-kicks below cabinets. Ideally, the air velocity out of the registers combined with the turbulence of the flow, vectoring of air by register vanes and geometry of register placement combine to mix the supply air within the room. A particular issue that has been raised recently is the performance of multiple capacity and air flow HVAC systems. These systems vary the air flow rate through the distribution system depending on the system load, or if operating in a ventilation rather than a space conditioning mode. These systems have been developed to maximize equipment efficiency, however, the high efficiency ratings do not include any room mixing effects. At lower air flow rates, there is the possibility that room air will be poorly mixed, leading to thermal stratification and reduced comfort for occupants. This can lead to increased energy use as the occupants adjust the thermostat settings to compensate and parts of the conditioned space have higher envelope temperature differences than for the well mixed case. In addition, lack of comfort can be a barrier to market acceptance of these higher efficiency systems To investigate the effect on room mixing of reduced air flow rates requires the measurement of mixing of supply air with room air throughout the space to be conditioned. This is a particularly difficult exercise if we want to determine the transient performance of the space conditioning system. Full scale experiments can be done in special test chambers, but the spatial resolution required to fully examine the mixing problem is usually limited by the sheer number of thermal sensors required. Current full-scale laboratory testing is therefore severely limited in its resolution. As an alternative, we used a water-filled scale model

  15. Passive Room-to-Room Air Transfer, Fresno, California (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2014-02-01

    Field testing was performed in a retrofit unoccupied test house in Fresno, California. Three air-based heating, ventilation, and air conditioning (HVAC) distribution systems - a typical airflow ducted system to the bedrooms, a low airflow ducted system to the bedrooms, and a system with no ductwork to the bedrooms - were evaluated during heating, cooling, and midseason conditions. The relative ability of each of the three systems was assessed with respect to relevant Air Conditioning Contractors of America (ACCA) and ASHRAE standards for house temperature uniformity and stability, respectively. Computational fluid dynamics (CFD) modeling also was performed and refined based on comparison to field test results to determine the air flow rate into the bedrooms of over-door and bottom-of-door air transfer grilles.

  16. NREL Demonstrates Game-Changing Air Conditioner Technology (Fact Sheet), Highlights in Research & Development, NREL (National Renewable Energy Laboratory)

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Testing of DEVAP prototype validates modeled predictions of 40% to 85% energy savings. Researchers in the NREL Buildings group are moving the award-winning desiccant enhanced evaporative (DEVAP) air conditioning technol- ogy further toward commercialization by demonstrating that its energy-saving perfor- mance matches closely with thermodynamic model predictions. Industry partners Synapse Product Development and AIL Research built two prototypes of DEVAP based on NREL's design and modeling,

  17. Saving Money During the Air Conditioning Season | Department...

    Broader source: Energy.gov (indexed) [DOE]

    Keeping your air conditioner maintained can help save you money this summer. | Photo courtesy of iStockphotofiremanYU Keeping your air conditioner maintained can help save you ...

  18. Existing Whole-House Solutions Case Study: Passive Room-to-Room Air Transfer, Fresno, California

    SciTech Connect (OSTI)

    D. Stecher and A. Poershke

    2014-02-01

    In this project, IBACOS, a U.S. Department of Energy Building America team, assessed a strategy for providing conditioned air to bedrooms when the bedroom doors are closed and measured potential thermal discomfort that occupants may experience when this strategy is used. Builders can use this information to discuss space conditioning options for low-load houses with their clients to determine acceptable comfort levels for occupants in these cost-optimized, energy-efficient houses.

  19. Air Quality

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Heat & Cool » Home Cooling Systems » Air Conditioning Air Conditioning Air conditioners cost U.S. homeowners more than $11 billion each year, and regular maintenance can keep your air conditioner running efficiently. | Photo courtesy of ©iStockphoto/JaniceRichard Air conditioners cost U.S. homeowners more than $11 billion each year, and regular maintenance can keep your air conditioner running efficiently. | Photo courtesy of ©iStockphoto/JaniceRichard Two-thirds of all homes in the

  20. Passive Room-to-Room Air Transfer, Fresno, California (Fact Sheet), Building America Case Study: Whole-House Solutions for Existing Homes, Building Technologies Office (BTO)

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Passive Room-to-Room Air Transfer Fresno, California PROJECT INFORMATION Construction: Retrofit Type: Single-family Builder: GreenEarthEquities (retrofit); http://greenearthequities.com/ Size: 1,621 ft 2 Price range: About $140,000 Date completed: 2011 Climate zone: Mixed-dry PERFORMANCE DATA HERS index: Not available Builder standard practice: Not available Case study house: 1,621 ft 2 With renewables: Not applicable Without renewables: 50.1% Projected annual energy cost savings: Not available

  1. Ammonia usage in vapor compression for refrigeration and air...

    Office of Scientific and Technical Information (OSTI)

    ... AMMONIA; PERFORMANCE; REFRIGERATING MACHINERY; REFRIGERANTS; CHLOROFLUOROCARBONS; AIR POLLUTION ABATEMENT; AIR CONDITIONERS; DISTRICT COOLING; COOLING SYSTEMS; WORKING FLUIDS; ...

  2. Indoor Chemical Exposures: Humans' Non-respiratory Interactions with Room Air

    ScienceCinema (OSTI)

    Charles Weschler

    2010-09-01

    March 18, 2010 Berkeley Lab Environmental Energy Technology Division distinguished lecture: The marked difference in pollutant concentrations between an occupied and un-occupied room are only partially explained by human bio-effluents. Humans alter levels of ozone and related oxidants such as nitrate and hydroxyl radicals in the rooms they inhabit; in effect, they change the oxidative capacity of room air. Ozone-initiated reactions on exposed skin, hair and clothing generate products, including potentially irritating chemicals whose concentrations are much higher in the occupant's breathing zone than in the core of the room. Charles J. Weschler is a Professor at the School of Public Health, the Department of Environmental and Occupational Medicine and the Environmental and Occupational Health Sciences Institute (EOHSI) at the University of Medicine and Dentistry of New Jersey (UMDNJ)/Robert Wood Johnson Medical School & Rutgers University (New Jersey). He is also a Visiting Professor at the International Centre for Indoor Environment and Energy, Technical University of Denmark (DTU, Lyngby, Denmark).

  3. Indoor Chemical Exposures: Humans' Non-respiratory Interactions with Room Air

    SciTech Connect (OSTI)

    Charles Weschler

    2010-03-29

    March 18, 2010 Berkeley Lab Environmental Energy Technology Division distinguished lecture: The marked difference in pollutant concentrations between an occupied and un-occupied room are only partially explained by human bio-effluents. Humans alter levels of ozone and related oxidants such as nitrate and hydroxyl radicals in the rooms they inhabit; in effect, they change the oxidative capacity of room air. Ozone-initiated reactions on exposed skin, hair and clothing generate products, including potentially irritating chemicals whose concentrations are much higher in the occupant's breathing zone than in the core of the room. Charles J. Weschler is a Professor at the School of Public Health, the Department of Environmental and Occupational Medicine and the Environmental and Occupational Health Sciences Institute (EOHSI) at the University of Medicine and Dentistry of New Jersey (UMDNJ)/Robert Wood Johnson Medical School & Rutgers University (New Jersey). He is also a Visiting Professor at the International Centre for Indoor Environment and Energy, Technical University of Denmark (DTU, Lyngby, Denmark).

  4. Attenuator And Conditioner

    DOE Patents [OSTI]

    Anderson, Gene R.; Armendariz, Marcelino G.; Carson, Richard F.; Bryan, Robert P.; Duckett, III, Edwin B.; Kemme, Shanalyn Adair; McCormick, Frederick B.; Peterson, David W.

    2006-04-04

    An apparatus and method of attenuating and/or conditioning optical energy for an optical transmitter, receiver or transceiver module is disclosed. An apparatus for attenuating the optical output of an optoelectronic connector including: a mounting surface; an array of optoelectronic devices having at least a first end; an array of optical elements having at least a first end; the first end of the array of optical elements optically aligned with the first end of the array of optoelectronic devices; an optical path extending from the first end of the array of optoelectronic devices and ending at a second end of the array of optical elements; and an attenuator in the optical path for attenuating the optical energy emitted from the array of optoelectronic devices. Alternatively, a conditioner may be adapted in the optical path for conditioning the optical energy emitted from the array of optoelectronic devices.

  5. Homeowner's Guide to Window Air Conditioner Installation for Efficiency and Comfort (Fact Sheet), Building America Case Study: Technology Solutions for Existing Homes, Building Technologies Office (BTO)

    SciTech Connect (OSTI)

    Not Available

    2013-06-01

    This fact sheet offers a step-by-step guide to proper installation of window air conditioning units, in order to improve efficiency and comfort for homeowners.

  6. Central Air Conditioning | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Central Air Conditioning Central Air Conditioning Central air conditioners circulate cool air through a system of supply and return ducts. | Photo courtesy of ©iStockphoto/DonNichols. Central air conditioners circulate cool air through a system of supply and return ducts. | Photo courtesy of ©iStockphoto/DonNichols. Central air conditioners circulate cool air through a system of supply and return ducts. Supply ducts and registers (i.e., openings in the walls, floors, or ceilings covered by

  7. Building America Technology Solutions for New and Existing Homes: A Homeowner’s Guide to Window Air Conditioner Installation for Efficiency and Comfort (Fact Sheet)

    Office of Energy Efficiency and Renewable Energy (EERE)

    This step-by-step guide developed by the National Renewable Energy Laboratory describes proper installation of window air conditioning units, in order to improve energy efficiency, save money, and improve comfort for homeowners

  8. Benefits of Leapfrogging to Superefficiency and Low Global Warming Potential Refrigerants in Room Air Conditioning

    SciTech Connect (OSTI)

    Shah, Nihar K.; Wei, Max; Letschert, Virginie; Phadke, Amol A.

    2015-10-01

    Hydrofluorocarbons (HFCs) emitted from uses such as refrigerants and thermal insulating foam, are now the fastest growing greenhouse gases (GHGs), with global warming potentials (GWP) thousands of times higher than carbon dioxide (CO2). Because of the short lifetime of these molecules in the atmosphere,1 mitigating the amount of these short-lived climate pollutants (SLCPs) provides a faster path to climate change mitigation than control of CO2 alone. This has led to proposals from Africa, Europe, India, Island States, and North America to amend the Montreal Protocol on Substances that Deplete the Ozone Layer (Montreal Protocol) to phase-down high-GWP HFCs. Simultaneously, energy efficiency market transformation programs such as standards, labeling and incentive programs are endeavoring to improve the energy efficiency for refrigeration and air conditioning equipment to provide life cycle cost, energy, GHG, and peak load savings. In this paper we provide an estimate of the magnitude of such GHG and peak electric load savings potential, for room air conditioning, if the refrigerant transition and energy efficiency improvement policies are implemented either separately or in parallel.

  9. Building America Whole-House Solutions for Existing Homes: Passive Room-to-Room Air Transfer, Fresno, California (Fact Sheet)

    Broader source: Energy.gov [DOE]

    In this project, IBACOS, a U.S. Department of Energy Building America team, assessed a strategy for providing conditioned air to bedrooms when the bedroom doors are closed and measured potential thermal discomfort that occupants may experience when this strategy is used. Builders can use this information to discuss space conditioning options for low-load houses with their clients to determine acceptable comfort levels for occupants in these cost-optimized, energy-efficient houses.

  10. Air Conditioning | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Heat & Cool » Home Cooling Systems » Air Conditioning Air Conditioning Air conditioners cost U.S. homeowners more than $11 billion each year, and regular maintenance can keep your air conditioner running efficiently. | Photo courtesy of ©iStockphoto/JaniceRichard Air conditioners cost U.S. homeowners more than $11 billion each year, and regular maintenance can keep your air conditioner running efficiently. | Photo courtesy of ©iStockphoto/JaniceRichard Two-thirds of all homes in the

  11. DOE Requires Air-Con International to Cease Sales of Inefficient Air

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Conditioners and Proposes Penalties | Department of Energy Air-Con International to Cease Sales of Inefficient Air Conditioners and Proposes Penalties DOE Requires Air-Con International to Cease Sales of Inefficient Air Conditioners and Proposes Penalties September 21, 2010 - 6:43pm Addthis The Department has issued a Notice of Noncompliance Determination and Proposed Civil Penalty to Air-Con, International, requiring Air-Con to cease the sale of certain air-conditioning systems in the

  12. Air-Conditioning Basics | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Air-Conditioning Basics Air-Conditioning Basics August 16, 2013 - 1:59pm Addthis Air conditioning is one of the most common ways to cool homes and buildings. How Air Conditioners Work Air conditioners employ the same operating principles and basic components as refrigerators. Refrigerators use energy (usually electricity) to transfer heat from the cool interior of the refrigerator to the relatively warm surroundings; likewise, an air conditioner uses energy to transfer heat from the interior

  13. Central Air Conditioning | Department of Energy

    Office of Environmental Management (EM)

    Air supply and return ducts come from indoors through the home's exterior wall or roof to connect with the packaged air conditioner, which is usually located outdoors....

  14. Air Conditioning | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    An air conditioner cools your home with a cold indoor coil called the evaporator. The condenser, a hot outdoor coil, releases the collected heat outside. The evaporator and ...

  15. Technical support document: Energy efficiency standards for consumer products: Room air conditioners, water heaters, direct heating equipment, mobile home furnaces, kitchen ranges and ovens, pool heaters, fluorescent lamp ballasts and television sets. Volume 2, Fluorescent lamp ballasts, television sets, room air conditioners, and kitchen ranges and ovens

    SciTech Connect (OSTI)

    Not Available

    1993-11-01

    This document is divided into ``volumes`` B through E, dealing with individual classes of consumer products. Chapters in each present engineering analysis, base case forecasts, projected national impacts of standards, life-cycle costs and payback periods, impacts on manufacturers, impacts of standards on electric utilities, and environmental effects. Supporting appendices are included.

  16. Central Air conditioners | Open Energy Information

    Open Energy Info (EERE)

    Contact needs updating Image needs updating Reference needed Missing content Broken link Other Additional Comments Cancel Submit Category: Articles with outstanding TODO tasks...

  17. Measure Guideline. Air Conditioner Diagnostics, Maintenance,...

    Office of Scientific and Technical Information (OSTI)

    Cite: Bibtex Format Close 0 pages in this document matching the terms "" Search For Terms: Enter terms in the toolbar above to search the full text of this document for pages...

  18. Natural Gas Heat Pump and Air Conditioner

    Office of Energy Efficiency and Renewable Energy (EERE)

    Lead Performer: Thermolift - Stony Brook, NY Partners: -- New York State Energy Research & Development Authority - Albany, NY -- Stony Brook University - Stony Brook, NY -- Oak Ridge National Laboratory - Oak Ridge, TN -- National Grid - Washington, DC -- Applied Thermodynamic Apparatus (ATA) - Ann Arbor, MI -- Fala Technologies - Kingston, NY -- LoDolce - Saugerties, NY

  19. Commercial Air Conditioners and Heat Pumps

    Office of Energy Efficiency and Renewable Energy (EERE)

    The Department of Energy (DOE) develops standardized data templates for reporting the results of tests conducted in accordance with current DOE test procedures. Templates may be used by third-party laboratories under contract with DOE that conduct testing in support of ENERGY STAR® verification, DOE rulemakings, and enforcement of the federal energy conservation standards.

  20. DOE Investigates Possible Air Conditioner Efficiency Violations

    Broader source: Energy.gov [DOE]

    The Department of Energy’s Office of Enforcement is committed to its compliance enforcement responsibilities with regard to federal energy conservation standards and ensuring that all those subject...

  1. Low-noise pulse conditioner

    DOE Patents [OSTI]

    Bird, David A.

    1983-01-01

    A low-noise pulse conditioner is provided for driving electronic digital processing circuitry directly from differentially induced input pulses. The circuit uses a unique differential-to-peak detector circuit to generate a dynamic reference signal proportional to the input peak voltage. The input pulses are compared with the reference signal in an input network which operates in full differential mode with only a passive input filter. This reduces the introduction of circuit-induced noise, or jitter, generated in ground referenced input elements normally used in pulse conditioning circuits, especially speed transducer processing circuits.

  2. Initial proof-of-principle for near room temperature Xe and Kr separation from air with MOFs

    SciTech Connect (OSTI)

    Thallapally, Praveen K.; Strachan, Denis M.

    2012-06-06

    Materials were developed and tested in support of the U.S. Department of Energy, Office of Nuclear Energy, Fuel Cycle Technology Separations and Waste Forms Campaign. Specifically, materials are being developed for the removal of Xenon and krypton from gaseous products of nuclear fuel reprocessing unit operations. During FY 2012, Three Metal organic framework (MOF) structures were investigated in greater detail for the removal and storage of Xe and Kr from air at room temperature. Our breakthrough measurements on Nickel based MOF could capture and separate parts per million levels of Xe from Air (40 ppm Kr, 78% N2, 21% O2, 0.9% Ar, 0.03% CO2). Similarly, the selectivity can be changed from Xe > Kr to Xe < Kr simply by changing the temperature in another MOF. Also for the first time we estimated the cost of the metal organic frameworks in bulk.

  3. Low-noise pulse conditioner

    DOE Patents [OSTI]

    Bird, D.A.

    1981-06-16

    A low-noise pulse conditioner is provided for driving electronic digital processing circuitry directly from differentially induced input pulses. The circuit uses a unique differential-to-peak detector circuit to generate a dynamic reference signal proportional to the input peak voltage. The input pulses are compared with the reference signal in an input network which operates in full differential mode with only a passive input filter. This reduces the introduction of circuit-induced noise, or jitter, generated in ground referenced input elements normally used in pulse conditioning circuits, especially speed transducer processing circuits. This circuit may be used for conditioning the sensor signal from the Fidler coil in a gas centrifuge for separation of isotopic gaseous mixtures.

  4. High efficiency laser spectrum conditioner

    DOE Patents [OSTI]

    Greiner, Norman R.

    1980-01-01

    A high efficiency laser spectrum conditioner for generating a collinear parallel output beam containing a predetermined set of frequencies from a multifrequency laser. A diffraction grating and spherical mirror are used in combination, to disperse the various frequencies of the input laser beam and direct these frequencies along various parallel lines spatially separated from one another to an apertured mask. Selection of the desired frequencies is accomplished by placement of apertures at locations on the mask where the desired frequencies intersect the mask. A recollimated parallel output beam with the desired set of frequencies is subsequently generated utilizing a mirror and grating matched and geometrically aligned in the same manner as the input grating and mirror.

  5. ISSUANCE 2015-06-09: Energy Conservation Program: Energy Conservation...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Standards for Room Air Conditioners; Request for Information ISSUANCE 2015-06-09: Energy Conservation Program: Energy Conservation Standards for Room Air Conditioners; Request ...

  6. SU-D-BRE-03: Dosimetric Impact of In-Air Spot Size Variations for Commissioning a Room-Matched Beam Model for Pencil Beam Scanning Proton Therapy

    SciTech Connect (OSTI)

    Zhang, Y; Giebeler, A; Mascia, A; Piskulich, F; Perles, L; Lepage, R; Dong, L

    2014-06-01

    Purpose: To quantitatively evaluate dosimetric consequence of spot size variations and validate beam-matching criteria for commissioning a pencil beam model for multiple treatment rooms. Methods: A planning study was first conducted by simulating spot size variations to systematically evaluate dosimetric impact of spot size variations in selected cases, which was used to establish the in-air spot size tolerance for beam matching specifications. A beam model in treatment planning system was created using in-air spot profiles acquired in one treatment room. These spot profiles were also acquired from another treatment room for assessing the actual spot size variations between the two treatment rooms. We created twenty five test plans with targets of different sizes at different depths, and performed dose measurement along the entrance, proximal and distal target regions. The absolute doses at those locations were measured using ionization chambers at both treatment rooms, and were compared against the calculated doses by the beam model. Fifteen additional patient plans were also measured and included in our validation. Results: The beam model is relatively insensitive to spot size variations. With an average of less than 15% measured in-air spot size variations between two treatment rooms, the average dose difference was ?0.15% with a standard deviation of 0.40% for 55 measurement points within target region; but the differences increased to 1.4%1.1% in the entrance regions, which are more affected by in-air spot size variations. Overall, our single-room based beam model in the treatment planning system agreed with measurements in both rooms < 0.5% within the target region. For fifteen patient cases, the agreement was within 1%. Conclusion: We have demonstrated that dosimetrically equivalent machines can be established when in-air spot size variations are within 15% between the two treatment rooms.

  7. Technology Solutions Case Study: Overcoming Comfort Issues Due to Reduced Flow Room Air Mixing

    SciTech Connect (OSTI)

    2015-03-01

    Energy efficiency upgrades reduce heating and cooling loads on a house. With enough load reduction and if the HVAC system warrants replacement, the HVAC system is often upgraded with a more efficient, lower capacity system that meets the loads of the upgraded house. In this project, IBACOS studied when HVAC equipment is downsized and ducts are unaltered to determine conditions that could cause a supply air delivery problem and to evaluate the feasibility of modifying the duct systems using minimally invasive strategies to improve air distribution.

  8. Central Air Conditioning | Department of Energy

    Energy Savers [EERE]

    that the newly installed air conditioner has the exact refrigerant charge and airflow rate specified by the manufacturer Locates the thermostat away from heat sources, such as...

  9. Metal-air cell comprising an electrolyte with a room temperature ionic liquid and hygroscopic additive

    DOE Patents [OSTI]

    Friesen, Cody A.; Krishnan, Ramkumar; Tang, Toni; Wolfe, Derek

    2014-08-19

    An electrochemical cell comprising an electrolyte comprising water and a hydrophobic ionic liquid comprising positive ions and negative ions. The electrochemical cell also includes an air electrode configured to absorb and reduce oxygen. A hydrophilic or hygroscopic additive modulates the hydrophobicity of the ionic liquid to maintain a concentration of the water in the electrolyte is between 0.001 mol % and 25 mol %.

  10. Interaction of Plutonium with Diverse Materials in Moist Air and Nitrogen-Argon Atmospheres at Room Temperature

    SciTech Connect (OSTI)

    John M. Haschke; Raymond J. Martinez; Robert E. Pruner II; Barbara Martinez; Thomas H. Allen

    2001-04-01

    Chemical and radiolytic interactions of weapons-grade plutonium with metallic, inorganic, and hydrogenous materials in atmospheres containing moist air-argon mixtures have been characterized at room temperature from pressure-volume-temperature and mass spectrometric measurements of the gas phase. A reaction sequence controlled by kinetics and gas-phase composition is defined by correlating observed and known reaction rates. In all cases, O{sub 2} is eliminated first by the water-catalyzed Pu + O{sub 2} reaction and H{sub 2}O is then consumed by the Pu + H{sub 2}O reaction, producing a gas mixture of N{sub 2}, argon, and H{sub 2}. Hydrogen formed by the reaction of water and concurrent radiolysis of hydrogenous materials either reacts to form PuH{sub 2} or accumulates in the system. Accumulation of H{sub 2} is correlated with the presence of hydrogenous materials in liquid and volatile forms that are readily distributed over the plutonium surface. Areal rates of radiolytic H{sub 2} generation are determined and applied in showing that modest extents of H{sub 2} production are expected for hydrogenous solids if the contact area with plutonium is limited. The unpredictable nature of complex chemical systems is demonstrated by occurrence of the chloride-catalyzed Pu + H{sub 2}O reaction in some tests and hydride-catalyzed nitriding in another.

  11. Controllable Growth of Perovskite Films by Room-Temperature Air Exposure for Efficient Planar Heterojunction Photovoltaic Cells

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Yang, Bin; Dyck, Ondrej; Poplawsky, Jonathan; Keum, Jong; Das, Sanjib; Puretzky, Alexander; Aytug, Tolga; Joshi, Pooran C.; Rouleau, Christopher M.; Duscher, Gerd; et al

    2015-12-01

    A two-step-solution-processing approach has been established to grow void-free perovskite films for low-cost and high-performance planar heterojunction photovoltaic devices. We generally applied a high-temperature thermal annealing treatment in order to drive the diffusion of CH3NH3I precursor molecules into the compact PbI2 layer to form perovskite films. But, thermal annealing for extended periods would lead to degraded device performance due to the defects generated by decomposition of perovskite into PbI2. In this work, we explored a controllable layer-by-layer spin-coating method to grow bilayer CH3NH3I/PbI2 films, and then drive the interdiffusion between PbI2 and CH3NH3I layers by a simple room-temperature-air-exposure for makingmore » well-oriented, highly-crystalline perovskite films without thermal annealing. This high degree of crystallinity resulted in a carrier diffusion length of ~ 800 nm and high device efficiency of 15.6%, which is comparable to the reported values from thermally-annealed perovskite films based counterparts. Finally, the simplicity and high device performance of this processing approach is highly promising for direct integration into industrial-scale device manufacture.« less

  12. HEATING, AIR-CONDITIONING AND REFRIGERATION DISTRIBUTORS INTERNATIONAL (HARDI)

    Broader source: Energy.gov [DOE]

    OE Framework Document and Stakeholder Meeting regarding the Enforcement of the updated Energy Conservation Standards for Air Conditioners, Furnaces and Heat Pumps.

  13. Desiccant Enhanced Evaporative Air-Conditioning (DEVap): Evaluation...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ... air conditioner market will create some market risk. ... AC. The availability of natural gas or other thermal energy ... 46 5.3 Solar Thermal Integration ......

  14. Innovative Evaporative and Thermally Activated Technologies Improve Air Conditioning; The Spectrum of Clean Energy Innovation (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2010-06-01

    Fact sheet describes NREL's work on a desiccant enhanced evaporative air conditioner (DEVap) that uses 90% less electricity than traditional air conditioning units.

  15. Anoka Municipal Utility - Residential Energy Efficiency Rebate...

    Broader source: Energy.gov (indexed) [DOE]

    Dehumidifiers Ceiling Fan Lighting Air conditioners Other EE LED Lighting Maximum Rebate Room Air Conditioner: limit of 2 units per account Lighting: limit of 15 per...

  16. Future Air Conditioning Energy Consumption in Developing Countriesand what can be done about it: The Potential of Efficiency in theResidential Sector

    SciTech Connect (OSTI)

    McNeil, Michael A.; Letschert, Virginie E.

    2007-05-01

    The dynamics of air conditioning are of particular interestto energy analysts, both because of the high energy consumption of thisproduct, but also its disproportionate impact on peak load. This paperaddresses the special role of this end use as a driver of residentialelectricity consumption in rapidly developing economies. Recent historyhas shown that air conditioner ownership can grow grows more rapidly thaneconomic growth in warm-climate countries. In 1990, less than a percentof urban Chinese households owned an air conditioner; by 2003 this numberrose to 62 percent. The evidence suggests a similar explosion of airconditioner use in many other countries is not far behind. Room airconditioner purchases in India are currently growing at 20 percent peryear, with about half of these purchases attributed to the residentialsector. This paper draws on two distinct methodological elements toassess future residential air conditioner 'business as usual' electricityconsumption by country/region and to consider specific alternative 'highefficiency' scenarios. The first component is an econometric ownershipand use model based on household income, climate and demographicparameters. The second combines ownership forecasts and stock accountingwith geographically specific efficiency scenarios within a uniqueanalysis framework (BUENAS) developed by LBNL. The efficiency scenariomodule considers current efficiency baselines, available technologies,and achievable timelines for development of market transformationprograms, such as minimum efficiency performance standards (MEPS) andlabeling programs. The result is a detailed set of consumption andemissions scenarios for residential air conditioning.

  17. History of Air Conditioning

    Broader source: Energy.gov [DOE]

    We take it for granted but what would life be like without the air conditioner? Once considered a luxury, this invention is now an essential, allowing us to cool everything from homes, businesses, businesses, data centers, laboratories and other buildings vital to our daily lives. Explore this timeline to learn some of the key dates in the history of air conditioning.

  18. Unitil (Electric)- Residential Energy Efficiency Programs

    Broader source: Energy.gov [DOE]

    The Energy Star Appliance Program provides rebates for clothes washers, air purifiers, refrigerators, and room air conditioners.

  19. History of Air Conditioning | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    History of Air Conditioning History of Air Conditioning July 20, 2015 - 3:15pm Addthis Paul Lester Paul Lester Digital Content Specialist, Office of Public Affairs MORE ON AIR CONDITIONING Check out our Energy Saver 101 infographic to learn how air conditioners work. Go to Energy Saver for more tips and advice on home cooling. Stay up-to-date on how the Energy Department is working to improve air conditioning technology. We take the air conditioner for granted, but imagine what life would be

  20. NREL Solves Residential Window Air Conditioner Performance Limitations (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2013-05-01

    Comprehensive performance tests lead to enhanced modeling capability and affordable methods to increase energy efficiency.

  1. List of Central Air conditioners Incentives | Open Energy Information

    Open Energy Info (EERE)

    Lighting Processing and Manufacturing Equipment Biomass CHPCogeneration Landfill Gas Photovoltaics Solar Space Heat Solar Thermal Electric Solar Thermal Process Heat Solar...

  2. Four Central Air Conditioners Determined Noncompliant With Energy Efficiency Standard

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy’s Office of Enforcement issued a Notice of Noncompliance Determination (Notice) on September 27, 2011, to AeroSys, Inc. (AeroSys) regarding four models of central ...

  3. High-Efficiency Rooftop Air Conditioners: Innovative Procurement...

    Office of Scientific and Technical Information (OSTI)

    Sponsoring Org: USDOE Country of Publication: United States Language: English Subject: 29 ENERGY PLANNING, POLICY AND ECONOMY; 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; ...

  4. Zero Carryover Liquid-Desiccant Air Conditioner for Solar Applications...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    ... less expensive, but they supply thermal energy at a lower temperature: ... they will deliver between 50% and 60% of the incident solar radiation as hot water at 180F (82C). ...

  5. Stirling Air Conditioner for Compact Cooling (Program Document...

    Office of Scientific and Technical Information (OSTI)

    Close Cite: Bibtex Format Close 0 pages in this document matching the terms "" Search For Terms: Enter terms in the toolbar above to search the full text of this document for ...

  6. Air Conditioner Ready to Change Industry - Continuum Magazine | NREL

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Department of Energy Aiming to Green NASCAR's Future: Q&A with Driver Leilani Munter Aiming to Green NASCAR's Future: Q&A with Driver Leilani Munter August 2, 2010 - 10:00am Addthis Leilani Münter adopts an acre of rainforest for every race she drives in. | Photo courtesy of Phil Cavali Leilani Münter adopts an acre of rainforest for every race she drives in. | Photo courtesy of Phil Cavali Lindsay Gsell "I feel being a part of NASCAR is where I can make a really big impact

  7. Laboratory Performance Testing of Residential Window Mounted Air Conditioners

    Broader source: Energy.gov [DOE]

    This presentation was delivered at the U.S. Department of Energy Building America Technical Update meeting on April 29-30, 2013, in Denver, Colorado.

  8. Reading Room

    Broader source: Energy.gov [DOE]

    Welcome to the Freedom of Information Act (FOIA) Electronic Reading Room for the Department of Energy at Headquarters.

  9. Alliant Energy Interstate Power and Light (Gas)- Residential Energy Efficiency Program

    Office of Energy Efficiency and Renewable Energy (EERE)

    Customers are eligible for room air conditioners and water heaters through the Appliance Rebate Program. Room air conditioners qualify for a rebate of $25 and water heaters qualify for a rebate o...

  10. Tax Credits, Rebates & Savings | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    Shrewsbury Electric offers rebates on ENERGY STAR appliances. Eligible products include washing machines, dishwashers, refrigerators, and room air conditioners. Customers......

  11. Tax Credits, Rebates & Savings | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    Power and Light (Gas)- Residential Energy Efficiency Program Customers are eligible for room air conditioners and water heaters through the Appliance Rebate Program. Room air...

  12. Improving Data Center Efficiency with Rack or Row Cooling Devices

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    data center cool- ing is achieved with computer room air conditioners (CRACs) or computer room air handlers (CRAHs). These CRAC and CRAH units are typically installed in data ...

  13. Seminar 14 - Desiccant Enhanced Air Conditioning: Desiccant Enhanced Evaporative Air Conditioning (Presentation)

    SciTech Connect (OSTI)

    Kozubal, E.

    2013-02-01

    This presentation explains how liquid desiccant based coupled with an indirect evaporative cooler can efficiently produce cool, dry air, and how a liquid desiccant membrane air conditioner can efficiently provide cooling and dehumidification without the carryover problems of previous generations of liquid desiccant systems. It provides an overview to a liquid desiccant DX air conditioner that can efficiently provide cooling and dehumidification to high latent loads without the need for reheat, explains how liquid desiccant cooling and dehumidification systems can outperform vapor compression based air conditioning systems in hot and humid climates, explains how liquid desiccant cooling and dehumidification systems work, and describes a refrigerant free liquid desiccant based cooling system.

  14. High Energy Efficiency Air Conditioning

    SciTech Connect (OSTI)

    Edward McCullough; Patrick Dhooge; Jonathan Nimitz

    2003-12-31

    This project determined the performance of a new high efficiency refrigerant, Ikon B, in a residential air conditioner designed to use R-22. The refrigerant R-22, used in residential and small commercial air conditioners, is being phased out of production in developed countries beginning this year because of concerns regarding its ozone depletion potential. Although a replacement refrigerant, R-410A, is available, it operates at much higher pressure than R-22 and requires new equipment. R-22 air conditioners will continue to be in use for many years to come. Air conditioning is a large part of expensive summer peak power use in many parts of the U.S. Previous testing and computer simulations of Ikon B indicated that it would have 20 - 25% higher coefficient of performance (COP, the amount of cooling obtained per energy used) than R-22 in an air-cooled air conditioner. In this project, a typical new R-22 residential air conditioner was obtained, installed in a large environmental chamber, instrumented, and run both with its original charge of R-22 and then with Ikon B. In the environmental chamber, controlled temperature and humidity could be maintained to obtain repeatable and comparable energy use results. Tests with Ikon B included runs with and without a power controller, and an extended run for several months with subsequent analyses to check compatibility of Ikon B with the air conditioner materials and lubricant. Baseline energy use of the air conditioner with its original R-22 charge was measured at 90 deg F and 100 deg F. After changeover to Ikon B and a larger expansion orifice, energy use was measured at 90 deg F and 100 deg F. Ikon B proved to have about 19% higher COP at 90 deg F and about 26% higher COP at 100 deg F versus R-22. Ikon B had about 20% lower cooling capacity at 90 deg F and about 17% lower cooling capacity at 100 deg F versus R-22 in this system. All results over multiple runs were within 1% relative standard deviation (RSD). All of these

  15. Press Room

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Press Room News, information and graphic resources from Fermilab and the world of high-energy physics: Press Releases All the news from Fermilab, from 1995 through today. Subscribe to the press release mailing list. Fermilab Fact Sheets Learn more about Fermilab's lasting scientific, social and economic impacts. Office of Communication Information, interviews with experts, speakers' bureau, background materials, emergency physics lessons for the on-deadline perplexed... Photo Archive High-res

  16. News Room

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Proud Legacy, Bold Future, Since 1943 News Room Your source for the latest news releases, fast facts, images and access to scores of scientists, engineers and other experts from Los Alamos National Laboratory. News Releases Science Briefs Photos Picture of the Week Publications Social Media Videos Fact Sheets James TenCate James TenCate elected Acoustical Society of America fellow TenCate's research focuses on nonlinear acoustics and elasticity, seismology and nonlinear imaging. 8/30/16 The

  17. DOE Requires Manufacturers to Halt Sales of Heat Pumps and Air...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Media contact(s): (202) 586-4940 Addthis Related Articles DOE Requires Manufacturers to Halt Sales of Heat Pumps and Air Conditioners Violating Minimum Appliance Standards DOE Orders ...

  18. Air-Con Agrees to Pay Civil Penalty to Resolve Enforcement Action...

    Energy Savers [EERE]

    air conditioners in the United States that used more energy than allowed by federal law. ... The agreement can be found here. Federal law allows companies to import - for export only ...

  19. Save Money and Stay Cool with an Efficient, Well-Maintained Air...

    Office of Environmental Management (EM)

    Air conditioners use about 5% of all the electricity ... a 30% tax break until the end of the year if you buy a ... can lower your AC unit's energy consumption by 5% to 15%. ...

  20. Golden Opportunity: Proposed Penalty (2014-CE-20003)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Golden Opportunity, Inc. failed to certify room air conditioners, central air conditioners/heat pumps, and residential clothes washers as compliant with the applicable energy conservation standards.

  1. Austin Utilities (Gas and Electric) - Residential Conserve and...

    Broader source: Energy.gov (indexed) [DOE]

    50 Dishwashers: 25 RefrigeratorsFreezers: 25 RefrigeratorFreezer Recycling: 15 Room Air Conditioners: 25 + 15 for recycling Room AC Recycling: 15 Central AC: 100 +...

  2. Multiple current peaks in room-temperature atmospheric pressure homogenous dielectric barrier discharge plasma excited by high-voltage tunable nanosecond pulse in air

    SciTech Connect (OSTI)

    Yang, De-Zheng; Wang, Wen-Chun; Zhang, Shuai; Tang, Kai; Liu, Zhi-jie; Wang, Sen

    2013-05-13

    Room temperature homogenous dielectric barrier discharge plasma with high instantaneous energy efficiency is acquired by using nanosecond pulse voltage with 20-200 ns tunable pulse width. Increasing the voltage pulse width can lead to the generation of regular and stable multiple current peaks in each discharge sequence. When the voltage pulse width is 200 ns, more than 5 organized current peaks can be observed under 26 kV peak voltage. Investigation also shows that the organized multiple current peaks only appear in homogenous discharge mode. When the discharge is filament mode, organized multiple current peaks are replaced by chaotic filament current peaks.

  3. Tax Credits, Rebates & Savings | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    are available for qualified dishwashers, clothes washers, air conditioners (central and room), lighting, heat pumps (air-source and geothermal),... Eligibility: Residential Savings...

  4. Tax Credits, Rebates & Savings | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    more energy efficient homes. The Energy Star Appliance Program provides rebates for clothes washers, air purifiers, refrigerators and room air conditioners. The Home Performance...

  5. Tax Credits, Rebates & Savings | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    the energy efficiency of homes. Rebates are available for qualified dishwashers, clothes washers, air conditioners (central and room), lighting, heat pumps (air-source and...

  6. Tax Credits, Rebates & Savings | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    energy efficient homes. The Energy Star Appliance Program provides rebates for clothes washers, air purifiers, refrigerators and room air conditioners. The Home Performance with...

  7. Air Conditioning with Magnetic Refrigeration : An Efficient, Green Compact Cooling System Using Magnetic Refrigeration

    SciTech Connect (OSTI)

    2010-09-01

    BEETIT Project: Astronautics is developing an air conditioning system that relies on magnetic fields. Typical air conditioners use vapor compression to cool air. Vapor compression uses a liquid refrigerant to circulate within the air conditioner, absorb the heat, and pump the heat out into the external environment. Astronautics’ design uses a novel property of certain materials, called “magnetocaloric materials”, to achieve the same result as liquid refrigerants. These magnetocaloric materials essentially heat up when placed within a magnetic field and cool down when removed, effectively pumping heat out from a cooler to warmer environment. In addition, magnetic refrigeration uses no ozone-depleting gases and is safer to use than conventional air conditioners which are prone to leaks.

  8. Air conditioning system

    DOE Patents [OSTI]

    Lowenstein, Andrew; Miller, Jeffrey; Gruendeman, Peter; DaSilva, Michael

    2005-02-01

    An air conditioner comprises a plurality of plates arranged in a successively stacked configuration with portions thereof having a spaced apart arrangement, and defining between successive adjacent pairs of plates at the spaced apart portions a first and second series of discrete alternating passages wherein a first air stream is passed through the first series of passages and a second air stream is passed through the second series of passages; and said stacked configuration of plates forming integrally therewith a liquid delivery means for delivering from a source a sufficient quantity of a liquid to the inside surfaces of the first series of fluid passages in a manner which provides a continuous flow of the liquid from a first end to a second end of the plurality of plates while in contact with the first air stream.

  9. Air-Con International: Noncompliance Determination and Proposed Penalty (2010-SE-0301)

    Broader source: Energy.gov [DOE]

    DOE issued a Notice of Noncompliance Determination to Air-Con International finding that a variety of central air conditioners and air conditioning heat pumps distributed under the Air-Con private label do not comport with the energy conservation standards. DOE also alleged in a Notice of Proposed Civil Penalty that Air-Con imported and distributed the noncompliant products in the U.S.

  10. Breakthrough Video: Desiccant Enhanced Evaporative Air Conditioning

    SciTech Connect (OSTI)

    2012-01-01

    Researchers at the National Renewable Energy Laboratory (NREL) invented a breakthrough technology that improves air conditioning in a novel way—with heat. NREL combined desiccant materials, which remove moisture from the air using heat, and advanced evaporative technologies to develop a cooling unit that uses 90% less electricity and up to 80% less total energy than traditional air conditioning (AC). This solution, called the desiccant enhanced evaporative air conditioner (DEVAP), also controls humidity more effectively to improve the comfort of people in buildings.

  11. Public Reading Room

    Office of Legacy Management (LM)

    By law, DOE must and will make a Public Reading Room available through site closure. Post-Closure: LM will maintain a Public Reading Room in accordance with EPA and Ohio EPA ...

  12. Flow conditioner for fuel injector for combustor and method for low-NO.sub.x combustor

    DOE Patents [OSTI]

    Dutta, Partha; Smith, Kenneth O.; Ritz, Frank J.

    2013-09-10

    An injector for a gas turbine combustor including a catalyst coated surface forming a passage for feed gas flow and a channel for oxidant gas flow establishing an axial gas flow through a flow conditioner disposed at least partially within an inner wall of the injector. The flow conditioner includes a length with an interior passage opening into upstream and downstream ends for passage of the axial gas flow. An interior diameter of the interior passage smoothly reduces and then increases from upstream to downstream ends.

  13. WICF Certification, Compliance and Enforcement webinar | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    14, 2011 2014-10-06 DOE Certification, Compliance, and Enforcement Overview for Refrigerators, Refrigerator-Freezers, Freezers, Dehumidifiers, Room Air Conditioners, Clothes ...

  14. EA-0819: Finding of No Significant Impact | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Energy Conservation Standards for Eight Types of Consumer Products: Room Air Conditioners, Water Heaters, Direct Heating Equipment, Mobile Home Furnaces, Ranges and Ovens, Pool ...

  15. Tax Credits, Rebates & Savings | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    gas from Owatonna Public Utilities. Equipment rebates for refrigerators, freezers and room air conditioners can be increased by properly recycling previously used, working...

  16. Alliant Energy Interstate Power and Light (Gas) - Business Energy...

    Broader source: Energy.gov (indexed) [DOE]

    Dollar Savings Clothes Washer: 50 - 100 Dishwasher: 15 Freezer: 25 Refrigerator: 50 Room Air Conditioner: 25 Desktop and integrated computers: 5 Computer Equipment: 4 -...

  17. Verdigris Valley Electric Cooperative- Residential Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    Verdigris Valley Electric Cooperative (VVEC) offers rebates for residential customers who purchase energy efficient home equipment. Rebates are available for room air conditioners, electric water...

  18. Tax Credits, Rebates & Savings | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    energy audits, and custom measures. Recycling rebates for refrigerators, freezers and room air conditioners are only available to customers who properly recycle their old working...

  19. Buying an Appliance this Holiday Season? ENERGY STAR Products...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Refrigerators Freezers Room air conditioners Televisions Clothes washers Dishwashers Battery chargers Water heaters Fluorescent lamp ballasts Incandescent reflector lamps If your ...

  20. Heat Controller: Proposed Penalty (2014-SE-15004)

    Broader source: Energy.gov [DOE]

    DOE alleged in a Notice of Proposed Civil Penalty that Heat Controller, Inc. privately labeled and distributed noncompliant room air conditioners in the U.S.

  1. News Archive | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Energy's Office of Enforcement announced today that DOE testing has identified five Friedrich room air conditioners that do not meet the ENERGY STAR Program's energy efficiency...

  2. Tax Credits, Rebates & Savings | Department of Energy

    Broader source: Energy.gov (indexed) [DOE]

    AC units, room air conditioners, compact fluorescent light bulbs, refrigerators, clothes washers, dehumidifiers, and dishwashers. Some restrictions apply to this program. All...

  3. Single Packaged Vertical Units | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    standards. File Single Packaged Vertical Units -- v2.0 More Documents & Publications Room Air Conditioners Commercial Refrigeration Equipment Commercial Refrigeration Equipment

  4. Rochester Public Utilities - Residential Conserve and Save Rebate...

    Broader source: Energy.gov (indexed) [DOE]

    contact RPU for consultation Dishwashers: 25 - 40 RefrigeratorsFreezers: 25, plus 15 bonus if properly recycled Room Air Conditioners: 25, plus 15 bonus if properly...

  5. Shrewsbury Electric- Residential Energy Efficiency Rebate Program

    Broader source: Energy.gov [DOE]

    In collaboration with EFI, Shrewsbury Electric offers rebates on ENERGY STAR appliances. Eligible products include washing machines, dishwashers, refrigerators, and room air conditioners. Customers...

  6. Residential Energy Efficiency Rebates (Offered by 5 Utilities)

    Broader source: Energy.gov [DOE]

     For residential customers, rebates are available for ENERGY STAR ceiling fans, clothes washers, decorative light strings, dehumidifiers, dishwashers, refrigerators, room air conditioners, and he...

  7. 2014-10-06 DOE Certification, Compliance, and Enforcement Overview for

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Refrigerators, Refrigerator-Freezers, Freezers, Dehumidifiers, Room Air Conditioners, Clothes Washers, Clothes Dryers, and Dishwashers | Department of Energy 06 DOE Certification, Compliance, and Enforcement Overview for Refrigerators, Refrigerator-Freezers, Freezers, Dehumidifiers, Room Air Conditioners, Clothes Washers, Clothes Dryers, and Dishwashers 2014-10-06 DOE Certification, Compliance, and Enforcement Overview for Refrigerators, Refrigerator-Freezers, Freezers, Dehumidifiers, Room

  8. Measurements and computations of room airflow with displacement ventilation

    SciTech Connect (OSTI)

    Yuan, X.; Chen, Q.; Glicksman, L.R.; Hu, Y.; Yang, X.

    1999-07-01

    This paper presents a set of detailed experimental data of room airflow with displacement ventilation. These data were obtained from a new environmental test facility. The measurements were conducted for three typical room configurations: a small office, a large office with partitions, and a classroom. The distributions of air velocity, air velocity fluctuation, and air temperature were measured by omnidirectional hot-sphere anemometers, and contaminant concentrations were measured by tracer gas at 54 points in the rooms. Smoke was used to observe airflow. The data also include the wall surface temperature distribution, air supply parameters, and the age of air at several locations in the rooms. A computational fluid dynamics (CFD) program with the Re-Normalization Group (RNG) {kappa}-{epsilon} model was also used to predict the indoor airflow. The agreement between the computed results and measured data of air temperature and velocity is good. However, some discrepancies exist in the computed and measured concentrations and velocity fluctuation.

  9. A review of polymer-based water conditioners for reduction of handling-related injury

    SciTech Connect (OSTI)

    Harnish, Ryan A.; Colotelo, Alison HA; Brown, Richard S.

    2011-01-01

    Fish are coated with an external layer of protective mucus. This layer serves as the primary barrier against infection or injury, reduces friction, and plays a role in ionic and osmotic regulation. However, the mucus layer is easily disturbed when fish are netted, handled, transported, stressed, or subjected to adverse water conditions. Water additives containing polyvinylpyrrolidone (PVP) or proprietary polymers have been used to prevent the deleterious effects of mucus layer disturbances in the commercial tropical fish industry, aquaculture, and for other fisheries management purposes. This paper reviews research on the effectiveness of water conditioners, and examines the contents and uses of a wide variety of commercially available water conditioners. Water conditioners containing polymers may reduce external damage to fish held in containers during scientific experimentation, including surgical implantation of electronic tags. However, there is a need to empirically test the effectiveness of water conditioners at preventing damage to and promoting healing of the mucus layer. A research agenda is provided to advance the science related to the use of water conditions to improve the condition of fish during handling and tagging.

  10. BEETIT: Building Cooling and Air Conditioning

    SciTech Connect (OSTI)

    2010-09-01

    BEETIT Project: The 14 projects that comprise ARPA-E’s BEETIT Project, short for “Building Energy Efficiency Through Innovative Thermodevices,” are developing new approaches and technologies for building cooling equipment and air conditioners. These projects aim to drastically improve building energy efficiency and reduce greenhouse gas emissions such as carbon dioxide (CO2) at a cost comparable to current technologies.