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1

Passive Solar Building Design and Solar Thermal Space Heating...  

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

Passive Solar Building Design and Solar Thermal Space Heating Webinar Passive Solar Building Design and Solar Thermal Space Heating Webinar Watch a recording of National Renewable...

2

Solar Thermal Process Heat | Open Energy Information  

Open Energy Info (EERE)

Solar Thermal Process Heat Incentives Retrieved from "http:en.openei.orgwindex.php?titleSolarThermalProcessHeat&oldid267198" Category: Articles with outstanding TODO tasks...

3

SENSIBLE HEAT STORAGE FOR A SOLAR THERMAL POWER PLANT  

E-Print Network (OSTI)

HEAT STORAGE FOR A SOLAR THERMAL POWER PLANT Thomas F.CENTRAL RECEIVER SOLAR THERMAL POWER SYSTEM, PHASE progressCorporation, RECEIVER SOLAR THERMAL POWER SYSTEM, PHASE I,

Baldwin, Thomas F.

2011-01-01T23:59:59.000Z

4

List of Solar Thermal Process Heat Incentives | Open Energy Information  

Open Energy Info (EERE)

Process Heat Incentives Process Heat Incentives Jump to: navigation, search The following contains the list of 204 Solar Thermal Process Heat Incentives. CSV (rows 1 - 204) Incentive Incentive Type Place Applicable Sector Eligible Technologies Active 30% Business Tax Credit for Solar (Vermont) Corporate Tax Credit Vermont Commercial Industrial Photovoltaics Solar Space Heat Solar Thermal Electric Solar Thermal Process Heat Solar Water Heat No APS - Renewable Energy Incentive Program (Arizona) Utility Rebate Program Arizona Commercial Residential Anaerobic Digestion Biomass Daylighting Geothermal Electric Ground Source Heat Pumps Landfill Gas Other Distributed Generation Technologies Photovoltaics Small Hydroelectric Solar Pool Heating Solar Space Heat Solar Thermal Process Heat

5

Gulf Power - Solar Thermal Water Heating Program | Department of Energy  

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

Gulf Power - Solar Thermal Water Heating Program Gulf Power - Solar Thermal Water Heating Program Gulf Power - Solar Thermal Water Heating Program < Back Eligibility Low-Income Residential Multi-Family Residential Residential Savings Category Heating & Cooling Solar Water Heating Maximum Rebate $1,000 Program Info State Florida Program Type Utility Rebate Program Provider Energy Efficiency '''''This program reopened on October 3, 2011 for 2012 applications. Funding is limited and must be reserved through online application before the installation of qualifying solar water heating systems. See Gulf Power's [http://www.gulfpower.com/renewable/solarThermal.asp Solar Water Heating] web site for more information.''''' Gulf Power offers a Solar Thermal Water Heating rebate to customers who install water heaters. This program started after the original pilot

6

Minnesota Power - Solar-Thermal Water Heating Rebate Program | Department  

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

Minnesota Power - Solar-Thermal Water Heating Rebate Program Minnesota Power - Solar-Thermal Water Heating Rebate Program Minnesota Power - Solar-Thermal Water Heating Rebate Program < Back Eligibility Commercial Industrial Low-Income Residential Multi-Family Residential Residential Savings Category Heating & Cooling Solar Water Heating Maximum Rebate Single-family unit: $2,000 Two- to three-family units: $4,000 Multi-family units (four or more): $10,000 Businesses: $25,000 Program Info Start Date 03/2010 Expiration Date 12/31/2013 State Minnesota Program Type Utility Rebate Program Rebate Amount 25% of costs Provider Minnesota Power Minnesota Power offers a 25% rebate for qualifying solar thermal water heating systems. The maximum award for single-family customers is $2,000 per customer; $4,000 for 2-3 family unit buildings; $10,000 for buildings

7

In-Situ Preparation and thermal shock resistance of mullite-cordierite heat tube material for solar thermal power  

Science Journals Connector (OSTI)

In order to improve the thermal shock resistance of solar thermal heat transfer tube material, the mullite-cordierite composite ceramic as solar thermal heat transfer tube material were fabricated by...?-Al2O3......

Xiaohong Xu ???; Xionghua Ma; Jianfeng Wu…

2013-06-01T23:59:59.000Z

8

The Added Economic and Environmental Value of Solar Thermal Systems in Microgrids with Combined Heat and Power  

E-Print Network (OSTI)

thermal absorption solar photo- storage chiller thermalbetween solar thermal collection and storage systems and CHPimpact of solar thermal and heat storage on CO 2 emissions

Marnay, Chris

2010-01-01T23:59:59.000Z

9

The Added Economic and Environmental Value of Solar Thermal Systems in Microgrids with Combined Heat and Power  

E-Print Network (OSTI)

Environmental Value of Solar Thermal Systems in MicrogridsEnvironmental Value of Solar Thermal Systems in Microgridsa) ABSTRACT The addition of solar thermal and heat storage

Marnay, Chris

2010-01-01T23:59:59.000Z

10

SENSIBLE HEAT STORAGE FOR A SOLAR THERMAL POWER PLANT  

E-Print Network (OSTI)

for concentrating solar-thermal energy use a large number ofBoth solar power plants absorb thermal energy in high-of a solar power plant that converts thermal energy into

Baldwin, Thomas F.

2011-01-01T23:59:59.000Z

11

SENSIBLE HEAT STORAGE FOR A SOLAR THERMAL POWER PLANT  

E-Print Network (OSTI)

with Sensible- Heat Storage Solar Power Plant with Sulfurof the Solar Power Plant Storage-Vessel Design, . . . . .System for Chemical Storage of Solar Energy. UC Berkeley,

Baldwin, Thomas F.

2011-01-01T23:59:59.000Z

12

The Added Economic and Environmental Value of Solar Thermal Systems in Microgrids with Combined Heat and Power  

E-Print Network (OSTI)

solar thermal and heat storage on CO 2 emissions and annual energyenergy costs, heat storage does not directly support solar thermal /energy costs. This paper focuses on analysis of the optimal interaction of solar thermal

Marnay, Chris

2010-01-01T23:59:59.000Z

13

Integration of solar thermal energy into processes with heat demand  

Science Journals Connector (OSTI)

An integration of solar thermal energy can reduce the utility cost and the environmental impact. A proper integration of solar thermal energy is required in order to achieve ... objective of this study is to maxi...

Andreja Nemet; Zdravko Kravanja…

2012-06-01T23:59:59.000Z

14

Transient-heat-transfer and stress analysis of a thermal-storage solar cooker module  

E-Print Network (OSTI)

This paper details the analysis carried out in Solidworks to determine the best material and configuration of a thermal-storage solar cooker module.The thermal-storage solar cooker utilizes the high-latent-heat lithium ...

Zengeni, Hazel C

2014-01-01T23:59:59.000Z

15

Thermal Solar Energy Systems for Space Heating of Buildings  

E-Print Network (OSTI)

to compensate the deficit. In this case a traditional solar heating system having the same characteristics with regard to the solar collecting area and the volume of storage tank is used. It can be concluded that the space heating system using a solar energy...

Gomri, R.; Boulkamh, M.

2010-01-01T23:59:59.000Z

16

Modeling the heating of the Green Energy Lab in Shanghai by the geothermal heat pump combined with the solar thermal energy and ground energy storage.  

E-Print Network (OSTI)

?? This work involves the study of heating systems that combine solar collectors, geothermal heat pumps and thermal energy storage in the ground. Solar collectors… (more)

Yu, Candice Yau May

2012-01-01T23:59:59.000Z

17

Potential of thermal insulation and solar thermal energy in domestic hot water and space heating and cooling sectors in Lebanon in the period 2010 - 2030.  

E-Print Network (OSTI)

??The potential of thermal insulation and solar thermal energy in domestic water heating, space heating and cooling in residential and commercial buildings Lebanon is studied… (more)

Zaatari, Z.A.R.

2012-01-01T23:59:59.000Z

18

Active charge/passive discharge solar heating systems: thermal analysis  

SciTech Connect

The performance of active charge/passive discharge solar space-heating systems is analyzed. This type of system combines liquid-cooled solar collector panels with a massive integral storage component that passively heats the building interior by radiation and free convection. The TRNSYS simulation program is used to evaluate system performance and to provide input for the development of a simplified analysis method. This method, which provides monthly calculations of delivered solar energy, is based on Klein's Phi-bar procedure and data from hourly TRNSYS simulations. The method can be applied to systems using a floor slab, a structural wall, or a water tank as the storage component. Important design parameters include collector area and orientation, building heat loss, collector and heat-exchanger efficiencies, storage capacity, and storage to room coupling.

Swisher, J.

1981-01-01T23:59:59.000Z

19

Energy Efficient Integration of Heat Pumps into Solar District Heating Systems with Seasonal Thermal Energy Storage  

Science Journals Connector (OSTI)

Abstract Solar district heating (SDH) with seasonal thermal energy storage (STES) is a technology to provide heat for space heating and domestic hot water preparation with a high fraction of renewable energy. In order to improve the efficiency of such systems heat pumps can be integrated. By preliminary studies it was discovered, that the integration of a heat pump does not always lead to improvements from an overall energy perspective, although the operation of the heat pump increases the efficiency of other components of the system e. g. the STES or the solar collectors. Thus the integration of heat pumps in SDH systems was investigated in detail. Usually, the heat pumps are integrated in such a way, that the STES is used as low temperature heat source. No other heat sources from the ambience are used and only that amount of energy consumed by the heat pump is additionally fed into the system. In the case of an electric driven heat pump, this is highly questionable concerning economic and CO2-emission aspects. Despite that fact the operation of the heat pump influences positively the performance of other components in the system e. g. the STES and makes them more efficient. If the primary energy consumption of the heat pump is lower than the energetic benefits of all other components, the integration makes sense from an energetic point of view. A detailed assessment has been carried out to evaluate the most promising system configurations for the integration of a heat pump. Based on this approach a system concept was developed in which the integration of the heat pump is energetically further improved compared to realised systems. By means of transient system simulations this concept was optimised with regard to the primary energy consumption. A parameter study of this new concept has been performed to identify the most sensitive parameters of the system. The main result and conclusion are that higher solar fractions and also higher primary energy savings can be achieved by SDH systems using heat pumps compared systems without heat pumps.

Roman Marx; Dan Bauer; Harald Drueck

2014-01-01T23:59:59.000Z

20

Analyzing the efficiency of a photovoltaic-thermal solar collector based on heat pipes  

Science Journals Connector (OSTI)

The structure of a photovoltaic/thermal solar collector based on aluminum heat pipes and ... , along with the results from analyzing its efficiency. Its optimum mode of operation is shown...

S. M. Khairnasov

2014-01-01T23:59:59.000Z

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


21

Solar thermal aircraft  

DOE Patents (OSTI)

A solar thermal powered aircraft powered by heat energy from the sun. A heat engine, such as a Stirling engine, is carried by the aircraft body for producing power for a propulsion mechanism, such as a propeller. The heat engine has a thermal battery in thermal contact with it so that heat is supplied from the thermal battery. A solar concentrator, such as reflective parabolic trough, is movably connected to an optically transparent section of the aircraft body for receiving and concentrating solar energy from within the aircraft. Concentrated solar energy is collected by a heat collection and transport conduit, and heat transported to the thermal battery. A solar tracker includes a heliostat for determining optimal alignment with the sun, and a drive motor actuating the solar concentrator into optimal alignment with the sun based on a determination by the heliostat.

Bennett, Charles L. (Livermore, CA)

2007-09-18T23:59:59.000Z

22

Thermal and economical analysis of a central solar heating system with underground seasonal storage in Turkey  

Science Journals Connector (OSTI)

Thermal performance and economic feasibility of two types of central solar heating system with seasonal storage under four climatically different Turkey locations are investigated. The effects of storage volume and collector area on the thermal performance and cost are studied for three load sizes. The simulation model of the system consisting of flat plate solar collectors, a heat pump, under ground storage tank and heating load based on a finite element analysis and finite element code ANSYS™ is chosen as a convenient tool. In this study, the lowest solar fraction value for Trabzon (41°N) and the highest solar fraction value for Adana (37°N) are obtained. Based on the economic analysis, the payback period of system is found to be about 25–35 years for Turkey.

A. Ucar; M. Inalli

2005-01-01T23:59:59.000Z

23

Improving Solar Dryers’ Performances Using Design and Thermal Heat Storage  

Science Journals Connector (OSTI)

Solar drying is one of the most important ... , at the same time as using free solar energy permits to reduce the cost of ... face or to limit the intermittent character of solar energy, storage is proposed as a ...

Lyes Bennamoun

2013-12-01T23:59:59.000Z

24

SENSIBLE HEAT STORAGE FOR A SOLAR THERMAL POWER PLANT  

E-Print Network (OSTI)

provide solar power plant energy storage for a reasonablefor Chemical Storage of Solar Energy. UC Berkeley, M.S.for a solar power plant without energy storage for nighttime

Baldwin, Thomas F.

2011-01-01T23:59:59.000Z

25

SENSIBLE HEAT STORAGE FOR A SOLAR THERMAL POWER PLANT  

E-Print Network (OSTI)

Power Plant Solar Power Ideal Gas Turbine Topping Braytonefficiency of a solar power plant with gas-turbine toppingfor a solar power plant with Brayton-cycle gas turbine

Baldwin, Thomas F.

2011-01-01T23:59:59.000Z

26

SENSIBLE HEAT STORAGE FOR A SOLAR THERMAL POWER PLANT  

E-Print Network (OSTI)

Design. Propofied Solar Cooling Tower Type Wet-Cooled Powerdry-cooling tower was used in the proposed solar power plantTower • Power-Generation Subsystem Summary An Overall Summary of the Proposed Solar

Baldwin, Thomas F.

2011-01-01T23:59:59.000Z

27

SENSIBLE HEAT STORAGE FOR A SOLAR THERMAL POWER PLANT  

E-Print Network (OSTI)

Power Plant Solar Power Ideal Gas Turbine Topping Braytonwill require higher parasitic power for gas circulation. Theefficiency of a solar power plant with gas-turbine topping

Baldwin, Thomas F.

2011-01-01T23:59:59.000Z

28

SENSIBLE HEAT STORAGE FOR A SOLAR THERMAL POWER PLANT  

E-Print Network (OSTI)

ADVANCED THERMAL ENERGY STORAGE CONCEPT DEFINITION STUDY FORSchilling. F. E. , Thermal Energy Storage Using PrestressedNo ~cumulate thermal energy storage. Estimate ESTrof2(

Baldwin, Thomas F.

2011-01-01T23:59:59.000Z

29

Investigation of new heat exchanger design performance for solar thermal chemical heat pump.  

E-Print Network (OSTI)

?? The emergence of Thermally Driven Cooling system has received more attention recently due to its ability to utilize low grade heat from engine, incinerator… (more)

Cordova, Cordova

2013-01-01T23:59:59.000Z

30

SENSIBLE HEAT STORAGE FOR A SOLAR THERMAL POWER PLANT  

E-Print Network (OSTI)

the Heat-Transfer fluid Heat-Transfer Gas Helium Helium Gaswater vapor as a fluids, heat~transfer Problems associatedthermal energy by a heat-transfer fluid and used directly or

Baldwin, Thomas F.

2011-01-01T23:59:59.000Z

31

Non-thermal solar wind heating by supra-thermal ions  

Science Journals Connector (OSTI)

The effect of a new energy source due to energies transferred from supra-thermal secondary ions on the temperature profile of the solar wind has been considered. For this purpose ... solution of a tri-fluid model...

H. J. Fahr

1973-05-01T23:59:59.000Z

32

A NEW SOLAR THERMAL RECEIVER UTILIZING A SMALL PARTICLE HEAT EXCHANGER  

E-Print Network (OSTI)

Report LBL 8520. ) A NEW SOLAR THERMAL RECEIVER UTILIZING Aenergy. A new type of solar thermal receiver based on thisThe success of the solar thermal electric power program

Hunt, Arlon J.

2011-01-01T23:59:59.000Z

33

DRAIN-BACK PROTECTED LOW-FLOW SOLAR HEATING SYSTEM WITH DISTRIBUTED ELEVATED THERMALLY STRATIFIED STORAGE  

Science Journals Connector (OSTI)

ABSTRACT Design considerations concerning a drain-back freeze and overheat protection system are given with emphasis on nitrogen management and thermal stratification of an elevated distributed storage. The actual system of GNT in Berg, Federal Republic of Germany is described. KEYWORDS Solar Heating; Freeze Protection; Overheat Protection; Drain-Back System;

W.B. VELTKAMP; J. VAN BERKEL; A.T. KEESMAN

1990-01-01T23:59:59.000Z

34

SENSIBLE HEAT STORAGE FOR A SOLAR THERMAL POWER PLANT  

E-Print Network (OSTI)

ollection subsystem uses heliostats and a central receiverhr Installed Cost of the Heliostats* - Installed Cost of thein Chapter 4. Table 2-4. Heliostats Reference Solar Power

Baldwin, Thomas F.

2011-01-01T23:59:59.000Z

35

An improved absorption generator for solar-thermal powered heat pumps. Part 2: Energy and economics  

SciTech Connect

Solar heated absorption chiller installations have been very expensive for their rating. To enhance collector thermal efficiency the liquid flowing within the collectors must be kept as cool as possible. However, there is also a need to operate the absorption reported earlier. The compromise usually results in poor collector efficiency as well as a relatively poor specific chiller effect. The proposed vortex generator permits a heat pump to operate efficiently with relatively low temperature solar heated fluid (70--80 C). As a result, the collectors are cooler and more efficient. As noted in Part 1, the specific heat pumping capacity is about 27% greater than conventional systems operating at the same reduced generator temperatures. Therefore, a smaller, less expensive chiller is required. The reduced investment in solar arrays and absorption chillers is estimated along with a range of paybacks.

Fineblum, S. [Megadyne Inc., Rochester, NY (United States)

1997-12-31T23:59:59.000Z

36

Feasibility of combined solar thermal and ground source heat pump systems in cold climate, Canada  

Science Journals Connector (OSTI)

This document presents a study for examining the viability of hybrid ground source heat pump (GSHP) systems that use solar thermal collectors as the supplemental component in heating dominated buildings. Loads for an actual house in the City of Milton near Toronto, Canada, were estimated. TRNSYS, a system simulation software tool, was used to model yearly performance of a conventional GSHP system as well as a proposed hybrid GSHP system. Actual yearly data collected from the site were examined against the simulation results. This study demonstrates that hybrid ground source heat pump system combined with solar thermal collectors is a feasible choice for space conditioning for heating dominated houses. It was shown that the solar thermal energy storage in the ground could reduce a large amount of ground heat exchanger (GHX) length. Combining three solar thermal collectors with a total area of 6.81 m2 to a GSHP system will reduce GHX length by 15%. Sensitivity analysis was carried out for different cities of Canada and resulted that Vancouver, with mildest climate compared to other cities, was the best candidate for the proposed solar hybrid GSHP system with a GHX length reduction to solar collector area ratio of 7.64 m/m2. Overall system economic viability was also evaluated using a 20-year life-cycle cost analysis. The analysis showed that there is small economic benefit in comparing to the conventional GSHP system. The net present value of the proposed hybrid system based on the 20-year life-cycle cost analysis was estimated to be in a range of 3.7%–7.6% (or $1500 to $3430 Canadian dollar) lower than the conventional GSHP system depending on the drilling cost.

Farzin M. Rad; Alan S. Fung; Wey H. Leong

2013-01-01T23:59:59.000Z

37

Solar Thermal Power Generation and Industrial Process Heat  

Science Journals Connector (OSTI)

A solar chimney power plant consists of a transparent tubular chimney over 200 m tall rising from a...2 covered with a transparent material (Haaf et al. 1983). At the base of the chimney is located a turbine driv...

Brian Norton

2014-01-01T23:59:59.000Z

38

SENSIBLE HEAT STORAGE FOR A SOLAR THERMAL POWER PLANT  

E-Print Network (OSTI)

Cecil. E. A. , Research on Dry-Type Cooling _T_o_w_e_r~s~f~oTower Type Wet-Cooled Power Plant Solar-Power Plant Dry-Cool

Baldwin, Thomas F.

2011-01-01T23:59:59.000Z

39

HEATS: Thermal Energy Storage  

SciTech Connect

HEATS Project: The 15 projects that make up ARPA-E’s HEATS program, short for “High Energy Advanced Thermal Storage,” seek to develop revolutionary, cost-effective ways to store thermal energy. HEATS focuses on 3 specific areas: 1) developing high-temperature solar thermal energy storage capable of cost-effectively delivering electricity around the clock and thermal energy storage for nuclear power plants capable of cost-effectively meeting peak demand, 2) creating synthetic fuel efficiently from sunlight by converting sunlight into heat, and 3) using thermal energy storage to improve the driving range of electric vehicles (EVs) and also enable thermal management of internal combustion engine vehicles.

None

2012-01-01T23:59:59.000Z

40

Liquid Metal as a Heat Transport Fluid for Thermal Solar Power Applications  

Science Journals Connector (OSTI)

Abstract In order to increase the thermal efficiency and produce process heat for hydrogen production, the operating temperature of the heat transfer fluid in thermal solar plants needs to increase. In addition reaching 900 °C would also increase the heat storage density and the efficiency of the thermodynamic cycle by using a combined cycle for electricity production. The benefits of hydrogen (e.g., for fuel cells) and a more efficient thermodynamic cycle would allow a plant to have a higher energy output per square acre of land use, thereby increasing its economic competiveness. Today, solar thermal plants do not operate at these high temperatures due to the fact that conventional heat transport fluids begin to disintegrate around 600 °C [1,2]. For non-solar applications, low melting-temperature metals, such as wood's metal and lead- bismuth eutectic alloy, have been examined as heat-transport media, because of the large temperature ranges over which they remain liquid. Lead-bismuth eutectic alloy (LBE; 45% Pb, 55% Bi) melts at 125 °C and does not boil until 1670 °C, making it an ideal heat-transfer medium for application in thermal solar power [3]. The main obstacle to using LBE is finding structural materials that can withstand the harsh corrosion environments at high temperatures. In this work the key issues of materials exposed to liquid metal are described while initial data on carious steels tested in liquid metal are provided. While corrosion is a significant issue in this environment, mechanical failure of steels in liquid metal are discussed as well.

D. Frazer; E. Stergar; C. Cionea; P. Hosemann

2014-01-01T23:59:59.000Z

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


41

An improved absorption generator for solar-thermal powered heat pumps. Part 1: Feasibility  

SciTech Connect

Solar heated absorption chiller installations have been, typically, very expensive for their rating. The need to keep the liquid flowing within the collectors as cool as possible to enhance collector thermal efficiency, conflicts with the need to operate the absorption chiller at a higher temperature. The compromise usually results in poor collector efficiency as well as a relatively poor specific chiller effect. The proposed vortex generator permits a heat pump to operate efficiently with relatively low temperature solar heated fluid (70--80 C). As a result, the collectors are cooler and much more efficient. In addition, the specific heat pumping capacity is about 27% greater than conventional systems operating at the same reduced generator temperatures and, therefore, a smaller chiller is required. The economic consequences of these benefits will be presented in Part 2.

Fineblum, S. [Megadyne Inc., Rochester, NY (United States)

1997-12-31T23:59:59.000Z

42

Review of combined photovoltaic/thermal collector: solar assisted heat pump system options  

SciTech Connect

The advantages of using photovoltaic (PV) and combined photovoltaic/thermal (PV/T) collectors in conjunction with residential heat pumps are examined. The thermal and electrical power requirements of similar residences in New York City and Fort Worth are the loads under consideration. The TRNSYS energy balance program is used to simulate the operations of parallel, series, and cascade solar assisted heat pump systems. Similar work involving exclusively thermal collectors is reviewed, and the distinctions between thermal and PV/T systems are emphasized. Provided the defrost problem can be satisfactorily controlled, lifecycle cost analyses show that at both locations the optimum collector area is less than 50 m/sup 2/ and that the parallel system is preferred.

Sheldon, D.B.; Russell, M.C.

1980-01-01T23:59:59.000Z

43

Operational Performance Results of an Innovative Solar Thermal Cooling and Heating Plant  

Science Journals Connector (OSTI)

Solar thermal cooling and heating plants with single-effect sorption chillers/heat pumps promise primary energy savings compared to electric vapor compression chiller systems. Yet, the need of auxiliary electric a nd fossil energy for the operation and backup of the thermal cooling system possibly worsen the primary energy balance. An auspicious approach to overcome this problem is the application of a more efficient multi -stage sorption chiller with flexible operational modes. A pilot installation of that innovative solar thermal heating and cooling plant comprising a two stage absorption chiller/heat pump is presented. Beginning with the motivation and the system concept, a detailed analysis of the 2011/2012 cooling and heating periods is shown. The influence of the different system components – especially the absorption chiller – on the overall system performance is analyzed and a comparison to data from a detailed dynamic model is carried out. Recommendations for the improvement with respect to efficiency and economic aspects are given based on the installation process and the operational experience gained in the last 1 ˝ years.

Manuel Riepl; Felix Loistl; Richard Gurtner; Martin Helm; Christian Schweigler

2012-01-01T23:59:59.000Z

44

Influence of Hydraulics and Control of Thermal Storage in Solar Assisted Heat Pump Combisystems  

Science Journals Connector (OSTI)

Abstract This paper studies the influence of hydraulics and control of thermal storage in systems combined with solar thermal and heat pump for the production of warm water and space heating in dwellings. A reference air source heat pump system with flat plate collectors connected to a combistore was defined and modeled together with the IEA SHC Task 44/HPP Annex 38 (T44A38) “Solar and Heat Pump Systems” boundary conditions of Strasbourg climate and SFH45 building. Three and four pipe connections as well as use of internal and external heat exchangers for DHW preparation were investigated as well as sensor height for charging of the DHW zone in the store. The temperature in this zone was varied to ensure the same DHW comfort was achieved in all cases. The results show that the four pipe connection results in 9% improvement in SPF compared to three pipe and that the external heat exchanger for DHW preparation leads to a 2% improvement compared to the reference case. Additionally the sensor height for charging the DHW zone of the store should not be too low, otherwise system performance is adversely affected.

Stefano Poppi; Chris Bales

2014-01-01T23:59:59.000Z

45

Monitoring and simulation of the thermal performance of solar heated outdoor swimming pools  

SciTech Connect

Based on detailed measurements of two outdoor swimming pools (at Leonberg and Moehringen) a computer model has been developed and validated for the simulation of the thermal behaviour of such pools. The subroutine is compatible to TRNSYS 13.1. Correlations for the heat losses due to evaporation, convection, and radiation were taken from literature and tested in the model. It was not possible to select one optimal correlation for the description of the evaporative heat losses of both swimming pools due to the different exposure to wind. Using the most suitable correlation for the evaporative heat losses of each pool allowed for the simulation of the pool temperature with less than 0.5 K standard deviation between measured and simulated temperature. the major problem was the measurement of the relevant wind speed to be used in the correlations describing the evaporative heat losses under real outdoor conditions. A method is described detailing how to calibrate the model using the heating energy requirement and the measured pool temperature during actual operation periods. The analysis of the measured data of two different outdoor swimming pools under the same climatic conditions showed differences of a factor 2 and more in the heat demand per unit pool area. This was mainly caused by the difference in local wind speed which differed by more than a factor 4. The two pools investigated were heated by solar energy with a fraction of 28% and 14%, respectively, and the seasonal efficiency of the solar systems was 37.7% and 33.4%. Simulations show that a reduction of the water temperature from 24[degrees]C to 22[degrees]C during periods with low outdoor temperatures and few visitors, reduces the fuel consumption to less than half and increases the solar fraction from 28% to 50% in one pool.

Hahne, E.; Kuebler, R. (Universitaet Stuttgart (Germany))

1994-07-01T23:59:59.000Z

46

Economic analysis of community solar heating systems that use annual cycle thermal energy storage  

SciTech Connect

The economics of community-scale solar systems that incorporate a centralized annual cycle thermal energy storage (ACTES) coupled to a distribution system is examined. Systems were sized for three housing configurations: single-unit dwellings, 10-unit, and 200-unit apartment complexes in 50-, 200-, 400-, and 1000-unit communities in 10 geographic locations in the United States. Thermal energy is stored in large, constructed, underground tanks. Costs were assigned to each component of every system in order to allow calculation of total costs. Results are presented as normalized system costs per unit of heat delivered per building unit. These methods allow: (1) identification of the relative importance of each system component in the overall cost; and (2) identification of the key variables that determine the optimum sizing of a district solar heating system. In more northerly locations, collectors are a larger component of cost. In southern locations, distribution networks are a larger proportion of total cost. Larger, more compact buildings are, in general, less expensive to heat. For the two smaller-scale building configurations, a broad minima in total costs versus system size is often observed.

Baylin, F.; Monte, R.; Sillman, S.; Hooper, F.C.; McClenahan, J.D.

1981-02-01T23:59:59.000Z

47

A DANISH SOLAR THERMAL ENERGY DATA BASE FOR HEATING SYSTEM DESIGN  

Science Journals Connector (OSTI)

ABSTRACT Successful design of solar heating systems is readily achieved if the designer has access to representative weather data and tested performance algorithms. This paper describes how updated solar radiation data have been provided via a public database system in Denmark. This work was carried out in cooperation with VE-data at Ĺlborg University and with the support of the Danish National Council of Technology (Teknologirĺdet). The product of this work is Solar Energy Program Package (SEPP) for IBM PC compatible computers. The Package provides a tool based on the f-chart method1 for use in the design and evaluation of solar water heating systems and solar space/hot water heating systems. A program for the economic evaluation of solar energy heating system is also supplied. KEYWORDS Solar energy database; f-chart method; Kt method; weather data; economics of solar heating; IBM compatible; software.

lektor Frank Bason

1988-01-01T23:59:59.000Z

48

Thermal performance analysis of a direct-expansion solar-assisted heat pump water heater  

Science Journals Connector (OSTI)

A direct-expansion solar-assisted heat pump water heater (DX-SAHPWH) is described, which can supply hot water for domestic use during the whole year. The system mainly employs a bare flat-plate collector/evaporator with a surface area of 4.2 m2, an electrical rotary-type hermetic compressor, a hot water tank with the volume of 150 L and a thermostatic expansion valve. R-22 is used as working fluid in the system. A simulation model based on lumped and distributed parameter approach is developed to predict the thermal performance of the system. Given the structure parameters, meteorological parameters, time step and final water temperature, the numerical model can output operational parameters, such as heat capacity, system COP and collector efficiency. Comparisons between the simulation results and the experimental measurements show that the model is able to give satisfactory predictions. The effect of various parameters, including solar radiation, ambient temperature, wind speed and compressor speed, has been analyzed on the thermal performance of the system.

X.Q. Kong; D. Zhang; Y. Li; Q.M. Yang

2011-01-01T23:59:59.000Z

49

SOLAR COLLECTORS, SELECTIVE SURFACES, AND HEAT ENGINES  

Science Journals Connector (OSTI)

SOLAR COLLECTORS, SELECTIVE SURFACES, AND HEAT...Tabor NATIONAL PHYSICAL LABORATORY OF ISRAEL SOLAR COLLECTORS, SELECTIVE SURFACES, AND HEAT...I should be working on the conversion of solar energy to power by thermal means instead...

H. Tabor

1961-01-01T23:59:59.000Z

50

Solid Particles Solar Thermal Loop for Production of Heat at 1000°C  

Science Journals Connector (OSTI)

The experiment presented concerns the evaluation of solid particle materials as a medium for direct conversion of focused solar radiation into heat in the range of 1000°C .

C. Royere

1985-01-01T23:59:59.000Z

51

Thermal performance of phase change material energy storage floor for active solar water-heating system  

Science Journals Connector (OSTI)

The conventional active solar water-heating floor system contains a big water tank to store energy in the day time for heating at night, which takes much building space and is very heavy. In order to reduce the w...

Ruolang Zeng; Xin Wang; Wei Xiao…

2010-06-01T23:59:59.000Z

52

List of Solar Space Heat Incentives | Open Energy Information  

Open Energy Info (EERE)

Space Heat Incentives Space Heat Incentives Jump to: navigation, search The following contains the list of 499 Solar Space Heat Incentives. CSV (rows 1 - 499) Incentive Incentive Type Place Applicable Sector Eligible Technologies Active 30% Business Tax Credit for Solar (Vermont) Corporate Tax Credit Vermont Commercial Industrial Photovoltaics Solar Space Heat Solar Thermal Electric Solar Thermal Process Heat Solar Water Heat No APS - Renewable Energy Incentive Program (Arizona) Utility Rebate Program Arizona Commercial Residential Anaerobic Digestion Biomass Daylighting Geothermal Electric Ground Source Heat Pumps Landfill Gas Other Distributed Generation Technologies Photovoltaics Small Hydroelectric Solar Pool Heating Solar Space Heat Solar Thermal Process Heat Solar Water Heat

53

Heat Exchangers for Solar Water Heating Systems | Department of Energy  

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

Heat Exchangers for Solar Water Heating Systems Heat Exchangers for Solar Water Heating Systems Heat Exchangers for Solar Water Heating Systems May 30, 2012 - 3:40pm Addthis Image of a heat exchanger. | Photo from iStockphoto.com Image of a heat exchanger. | Photo from iStockphoto.com Solar water heating systems use heat exchangers to transfer solar energy absorbed in solar collectors to the liquid or air used to heat water or a space. Heat exchangers can be made of steel, copper, bronze, stainless steel, aluminum, or cast iron. Solar heating systems usually use copper, because it is a good thermal conductor and has greater resistance to corrosion. Types of Heat Exchangers Solar water heating systems use three types of heat exchangers: Liquid-to-liquid A liquid-to-liquid heat exchanger uses a heat-transfer fluid that

54

Latent Heat Based High Temperature Solar Thermal Energy Storage for Power Generation  

Science Journals Connector (OSTI)

Abstract The design of a phase change material based high temperature solar thermal energy storage device is presented. Said unit will be used as an energy reserve for a 1 kWe domestic CCHP system using a Stirling engine to produce electric power. The thermal energy storage is conducted by means of the exploitation of the latent heat of fusion of the material contained inside the tank. This method was chosen because a great energy density is obtained and, at the same time, it is possible to extract the stored energy with very small variations on the temperature, which is a favorable feature for its intended purpose. The selection of the phase change material is discussed and the design of the different components of the proposed storage model is described. It is analyzed, as well, the insulating solution applied that minimizes heat losses. Finally, a comparison between experimental results of the tests performed on the first built to scale prototype and the data obtained from computer simulations is shown.

Bruno Cárdenas; Noel León

2014-01-01T23:59:59.000Z

55

Thermal storage of solar energy as sensible heat at medium temperatures  

Science Journals Connector (OSTI)

A model has been solved in order to determine the thermal losses of a storage tank, where thermal energy is stored as sensible heat of a diathermic fluid at medium temperatures. A parametric analysis has been ...

C. Bellecci; A. Bonanno; M. Camarca; M. Conti; L. La Rotonda…

56

Survey and evaluation of available thermal insulation materials for use on solar heating and cooling systems  

SciTech Connect

This is the final report of a survey and evaluation of insulation materials for use with components of solar heating and cooling systems. The survey was performed by mailing questionnaires to manufacturers of insulation materials and by conducting an extensive literature search to obtain data on relevant properties of various types of insulation materials. The study evaluated insulation materials for active and passive solar heating and cooling systems and for multifunction applications. Primary and secondary considerations for selecting insulation materials for various components of solar heating and cooling systems are presented.

Not Available

1980-03-01T23:59:59.000Z

57

Solar Keymark Testing of Solar Thermal Products  

Science Journals Connector (OSTI)

The Solar Keymark is the official CEN certification scheme for thermal solar collectors and factory made thermal solar systems. The Solar Keymark requires that the products fulfil the...

Harald Drück; Stephan Fischer…

2009-01-01T23:59:59.000Z

58

Thermal regimes in a primary fluid heated by solar energy in a linear collector  

Science Journals Connector (OSTI)

The steady-state heat transfer equation has been solved for the determination of temperature profiles in a diathermic oil flowing through a linear boiler placed on the focal line of cylindrical parabolic solar...

O. Barra; M. Conti; L. Correra; R. Visentin; E. Pugliese Caratelli

59

Computational and experimental investigations into cavity receiver heat loss for solar thermal concentrators  

E-Print Network (OSTI)

of the total, though the losses depend on solar elevation angle; at higher angles, and in low-wind conditions in inclination, temperature and cavity geometry on convective and radiative heat loss. Secondly, a water

60

Energy partition and conversion of solar and thermal radiation into sensible and latent heat in a greenhouse under arid conditions  

Science Journals Connector (OSTI)

For a greenhouse thermal analysis, it is essential to know the energy partition and the amount of solar and thermal radiation converted into sensible and latent heat in the greenhouse. Factors that are frequently needed are: efficiency of utilization of incident solar radiation (?), and sensible and latent heat factors (? and ?). Previous studies considered these factors as constant parameters. However, they depend on the environmental conditions inside and outside the greenhouse, plants and soil characteristics, and structure, orientation and location of the greenhouse. Moreover, these factors have not yet been evaluated under the arid climatic conditions of the Arabian Peninsula. In this study, simple energy balance equations were applied to investigate ?, ? and ?; energy partitioning among the greenhouse components; and conversion of solar and thermal radiation into sensible and latent heat. For this study, we used an evaporatively cooled, planted greenhouse with a floor area of 48 m2. The parameters required for the analysis were measured on a sunny, hot summer day. The results showed that value of ? was almost constant (?0.75); whereas the values of ? and ? strongly depended on the net radiation over the canopy (Rna); and could be represented by exponential decay functions of Rna. At a plant density corresponding to a leaf area index (LAI) of 3 and an integrated incident solar energy of 27.7 MJ m?2 d?1, the solar and thermal radiation utilized by the greenhouse components were 20.7 MJ m?2 d?1 and 3.74 MJ m?2 d?1, respectively. About 71% of the utilized radiation was converted to sensible heat and 29% was converted to latent heat absorbed by the inside air. Contributions of the floor, cover and plant surfaces on the sensible heat of the inside air were 38.6%, 48.2% and 13.2%, respectively.

I.M. Al-Helal; A.M. Abdel-Ghany

2011-01-01T23:59:59.000Z

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


61

Solar Thermal Processes  

Science Journals Connector (OSTI)

The use of solar energy for desalination purposes was one of ... The process is based on the use of solar thermal energy to evaporate water, thus separating pure ... brine. In this chapter an overview of solar thermal

M.T. Chaibi; Ali M. El-Nashar

2009-01-01T23:59:59.000Z

62

Solar heating in Colombia.  

E-Print Network (OSTI)

?? This report describes the process of a thesis implemented in Colombia concerning solar energy. The project was to install a self-circulating solar heating system,… (more)

Skytt, Johanna

2012-01-01T23:59:59.000Z

63

Active Solar Heating | Department of Energy  

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

Active Solar Heating Active Solar Heating Active Solar Heating June 24, 2012 - 5:58pm Addthis This North Carolina home gets most of its space heating from the passive solar design, but the solar thermal system supplies both domestic hot water and a secondary radiant floor heating system. | Photo courtesy of Jim Schmid Photography, NREL This North Carolina home gets most of its space heating from the passive solar design, but the solar thermal system supplies both domestic hot water and a secondary radiant floor heating system. | Photo courtesy of Jim Schmid Photography, NREL What does this mean for me? If you live in a cold climate and have unobstructed access to the sun during the heating season, an active solar heating system might make sense for you. You can buy a manufactured active solar system or build your own.

64

Preliminary Investigation into Solar Thermal Combi-system Performance.  

E-Print Network (OSTI)

??Solar thermal combi-systems use solar energy to provide thermal energy for space heating and domestic hot water. These systems come in many different designs and… (more)

Lee, Elizabeth

2014-01-01T23:59:59.000Z

65

Active charge/passive discharge solar heating systems: thermal analysis and performance comparisons  

SciTech Connect

This study analyzes the performance of active charge/passive discharge solar space heating systems. This type of system combines liquid-cooled solar collector panels with a massive integral storage component that passively heats the building interior by radiation and free convection. The TRNSYS simulation program is used to evaluate system performance and to provide input for the development of a simplified analysis method. This method, which provides monthly calculations of delivered solar energy, is based on Klein's Phi-bar procedure and data from hourly TRNSYS simulations. The method can be applied to systems using a floor slab, a structural wall, or a water tank as the storage component. Important design parameters include collector area and orientation, building heat loss, collector and heat-exchanger efficiencies, storage capacity, and storage-to-room coupling. Performance simulation results are used for comparisons with active and passive solar designs. Economic comparisons are based on these data and additional system features, such as cooling augmentation and integration of heating components with structural members.

Swisher, J.

1981-06-01T23:59:59.000Z

66

Solar Heating Contractor Licensing  

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

Michigan offers a solar heating contractor specialty license to individuals who have at least three years of experience installing solar equipment under the direction of a licensed solar contractor...

67

Powering of a Solar Heated Swimming Pool  

Science Journals Connector (OSTI)

To drive the pumps of a 2.100 m2 solar thermal system that heats an outdoors swimming pool. This need is hourly in phase with...

Marc Van Gysel

1984-01-01T23:59:59.000Z

68

Integrated solar heating unit  

SciTech Connect

This patent describes an integral solar heating unit with an integral solar collector and hot water storage system, the unit comprising: (a) a housing; (b) a flat plate solar collector panel mounted in the housing and having a generally horizontal upper edge and an uninsulated, open back surface; (c) a cylindrical hot water tank operatively connected to the solar collector panel and mounted in the housing generally parallel to and adjacent to the upper edge; (d) the housing comprising a hood around the tank a pair of side skirts extending down at the sides of the panel. The hood and side skirts terminate at lower edges which together substantially define a plane such that upon placing the heating unit on a generally planar surface, the housing substantially encapsulates the collector panel and hot water tank in a substantially enclosed air space; (e) the collector including longitudinally extended U-shaped collector tubes and a glazed window to pass radiation through to the collector tubes, and a first cold water manifold connected to the tubes for delivering fresh water thereto and a second hot water manifold connected to the tubes to remove heated water therefrom. The manifolds are adjacent and at least somewhat above and in direct thermal contact with the tank; and, (f) the skirts and hood lapping around the collector panel, exposing only the glazed window, such that everything else in the heating unit is enclosed by the housing such that heat emanating from the uninsulated, open back face of the collector and tank is captured and retained by the housing to warm the manifolds.

Larkin, W.J.

1987-01-20T23:59:59.000Z

69

California Solar Initiative - Solar Thermal Program | Department of Energy  

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

California Solar Initiative - Solar Thermal Program California Solar Initiative - Solar Thermal Program California Solar Initiative - Solar Thermal Program < Back Eligibility Commercial Fed. Government Industrial Local Government Low-Income Residential Multi-Family Residential Nonprofit Residential Schools State Government Savings Category Heating & Cooling Solar Swimming Pool Heaters Water Heating Maximum Rebate Step 1 Incentive Limits (contact utility to determine current incentive limits): Single-family residential systems that displace natural gas: $2,719 Single-family residential systems that displace electricity or propane: $1,834 Commercial and multifamily residential systems that displace natural gas: $500,000 Commercial and multifamily residential systems that displace electricity or propane: $250,000

70

List of Solar Water Heat Incentives | Open Energy Information  

Open Energy Info (EERE)

Solar Water Heat Incentives Solar Water Heat Incentives Jump to: navigation, search The following contains the list of 920 Solar Water Heat Incentives. CSV (rows 1-500) CSV (rows 501-920) Incentive Incentive Type Place Applicable Sector Eligible Technologies Active 30% Business Tax Credit for Solar (Vermont) Corporate Tax Credit Vermont Commercial Industrial Photovoltaics Solar Space Heat Solar Thermal Electric Solar Thermal Process Heat Solar Water Heat No APS - GEOSmart Financing Program (Arizona) Utility Loan Program Arizona Residential Solar Water Heat Photovoltaics No APS - Renewable Energy Incentive Program (Arizona) Utility Rebate Program Arizona Commercial Residential Anaerobic Digestion Biomass Daylighting Geothermal Electric Ground Source Heat Pumps Landfill Gas

71

Project Profile: Sensible Heat, Direct, Dual-Media Thermal Energy...  

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

Sensible Heat, Direct, Dual-Media Thermal Energy Storage Module Acciona logo Acciona Solar, under the Thermal Storage FOA, plans to develop a prototype thermal energy storage...

72

Floatable solar heat modules  

SciTech Connect

A floating solar heat module for swimming pools comprises a solid surface for conducting heat from the sun's rays to the water and further includes a solid heat storage member for continual heating even during the night. A float is included to maintain the solar heat module on the surface of the pool. The solid heat storage medium is a rolled metal disk which is sandwiched between top and bottom heat conducting plates, the top plate receiving the heat of the sun's rays through a transparent top panel and the bottom plate transferring the heat conducted through the top plate and rolled disk to the water.

Ricks, J.W.

1981-09-29T23:59:59.000Z

73

Comparison of the Thermal Performance of a Solar Heating System with Open and Closed Solid Sorption Storage  

Science Journals Connector (OSTI)

Abstract The aim of this paper is to compare two solar heating systems with different solid sorption storage concepts; an open storage concept with material transport and external reactor and a closed sorption storage concept with the material reservoir as reactor. Both storage concepts are part of system concepts that have been investigated during national projects for a period of more than 3 years each. A TRNSYS model has been developed for each concept and the corresponding mathematical model is described. An emphasis is given on the model simplifications and thus its up- and downscaling possibilities. TRNSYS simulation studies were performed using similar boundary conditions. Hence the simulation results can be compared directly, thus the advantages and disadvantages of both concepts under investigation can be elaborated and assessed. TRNSYS simulations have been performed for each system concept using the properties of two different thermochemical storage materials (TCM). It is shown that the type of TCM has a significant influence on the systems fractional thermal energy savings. Using silica gel as TCM, both system concepts’ performances are only slightly better compared to a standard water-filled storage tank of the same size. The TCM zeolite 13 XBF, a binder free 13 X zeolite, leads to significantly better fractional thermal energy savings. Although the two systems under investigation behave differently, the fractional thermal energy savings are similar. High solar thermal fractions up to a complete solar coverage can be achieved for both storage concepts with moderate collector array and store sizes.

Florian Bertsch; Dagmar Jaehnig; Sebastian Asenbeck; Henner Kerskes; Harald Drueck; Waldemar Wagner; Werner Weiss

2014-01-01T23:59:59.000Z

74

Thermal storage studies for solar heating and cooling: applications using chemical heat pumps. Final report, September 15, 1979-April 15, 1980  

SciTech Connect

TRNSYS-compatible subroutines for the simulation of chemical heat pumps have been written, and simulations (including heating, cooling, and domestic hot water) have been performed for Washington, DC and Ft. Worth, Texas. Direct weekly comparisons of the H/sub 2/SO/sub 4//H/sub 2/O and CaCl/sub 2//CH/sub 3/OH cycles have been carried out. Projected performance of the NH/sub 4/NO/sub 3//NH/sub 3/ cycle has also been investigated, and found to be essentially identical to H/sub 2/SO/sub 4//H/sub 2/O. In all cases simulated, the solar collector is a fixed evacuated tube system, which is necessary because chemical heat pumps operate at higher solar collector temperatures (> 100/sup 0/C) than conventional solar systems. With standard residential loads, the chemical heat pumps performed surprisingly well. In the Ft. Worth climate, less than 45 m/sup 2/ of collectors were required to meet over 90% of the heating and cooling loads. In Washington, DC, the area required to meet the cooling load was smaller (as little as 20 m/sup 2/, depending on window shading), but was sufficient to meet only 50 to 60% of the heating load. However, gas-fired backup via the heat pump was quite effective in reducing fossil fuel consumption: the thermal COPs in the heating mode were in the range 1.6 to 1.7. Since chemical heat pumps are designed to reject heat at relatively high temperatures, they were also effective in providing domestic hot water, supplying ca. 70% of the DHW in summer, ca. 50% in winter, and nearly 100% in spring and fall.

Offenhartz, P O.D.

1981-04-01T23:59:59.000Z

75

Solar Heating in Uppsala.  

E-Print Network (OSTI)

?? The housing corporation Uppsalahem has installed asolar heating system in the neighbourhood Haubitsen,which was renovated in 2011. This report examineshow much energy the solar… (more)

Blomqvist, Emelie; Häger, Klara

2012-01-01T23:59:59.000Z

76

Passive solar space heating  

SciTech Connect

An overview of passive solar space heating is presented indicating trends in design, new developments, performance measures, analytical design aids, and monitored building results.

Balcomb, J.D.

1980-01-01T23:59:59.000Z

77

Solar Water Heating  

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

publication provides basic informa- publication provides basic informa- tion on the components and types of solar water heaters currently available and the economic and environmental benefits of owning a system. Although the publica- tion does not provide information on building and installing your own system, it should help you discuss solar water heating systems intelligently with a solar equipment dealer. Solar water heaters, sometimes called

78

Solar Thermal Incentive Program | Department of Energy  

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

Solar Thermal Incentive Program Solar Thermal Incentive Program Solar Thermal Incentive Program < Back Eligibility Residential Savings Category Heating & Cooling Solar Water Heating Maximum Rebate 50% of the project cost Program Info Funding Source Public Benefits Fund State Connecticut Program Type State Rebate Program Rebate Amount Calculated: $70 multiplied by the SRCC "C" rating multiplied by the number of collectors multiplied by the Shading Factor Provider Clean Energy Finance and Investment Authority Note: This program is not currently accepting applications. Check the program web site for information regarding future financing programs. To participate in the residential solar hot water rebate, homeowners must first complete an energy assessment. Then, they must work with CEFIA

79

Performance investigation of thermal energy storage system with Phase Change Material (PCM) for solar water heating application  

Science Journals Connector (OSTI)

Abstract In order to harvest solar energy, thermal energy storage (TES) system with Phase Change Material (PCM) has been receiving greater attention because of its large energy storage capacity and isothermal behavior during charging and discharging processes. In the present experimental study, shell and tube TES system using paraffin wax was used in a water heating system to analyze its performance for solar water heating application. Energy and exergy including their cost analyses for the TES system were performed. Accordingly, total life cycle cost was calculated for different flow rates of the Heat Transfer Fluid (HTF). With 0.033 kg/min and 0.167 kg/min flow rates of water as HTF, energy efficiencies experienced were 63.88% and 77.41%, respectively, but in exergy analysis, efficiencies were observed to be about 9.58% and 6.02%, respectively. Besides, the total life cycle cost was predicted to be $ 654.61 for 0.033 kg/min flow rate, which could be reduced to $ 609.22 by increasing the flow rate to 0.167 kg/min. Therefore it can be summarized that total life cycle cost decreases with the increase of flow rate.

M.H. Mahfuz; M.R. Anisur; M.A. Kibria; R. Saidur; I.H.S.C. Metselaar

2014-01-01T23:59:59.000Z

80

Heat Transfer Behaviors of Thermal Energy Storages for High Temperature Solar Systems  

Science Journals Connector (OSTI)

Solar energy is an important alternative energy source that will likely be utilized in ... One main limiting factor in the application of solar energy is its cyclic time dependence. Therefore, solar systems requi...

A. Andreozzi; B. Buonomo; O. Manca…

2013-01-01T23:59:59.000Z

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


81

The Water Wall: A Passive Solar Collection and Thermal Storage Device for Supplementary Radiant Heating.  

E-Print Network (OSTI)

??Through the implementation of passive solar building systems, suburbia could take a fresh new step forward toward a progressively more sustainable direction. Making passive solar… (more)

Noseck, Rhett Roman

2013-01-01T23:59:59.000Z

82

List of Passive Solar Space Heat Incentives | Open Energy Information  

Open Energy Info (EERE)

Space Heat Incentives Space Heat Incentives Jump to: navigation, search The following contains the list of 278 Passive Solar Space Heat Incentives. CSV (rows 1 - 278) Incentive Incentive Type Place Applicable Sector Eligible Technologies Active Alternative Energy and Energy Conservation Patent Exemption (Corporate) (Massachusetts) Industry Recruitment/Support Massachusetts Commercial Biomass Fuel Cells Geothermal Electric Ground Source Heat Pumps Hydroelectric energy Municipal Solid Waste Passive Solar Space Heat Photovoltaics Solar Space Heat Solar Thermal Electric Solar Thermal Process Heat Solar Water Heat Wind energy Yes Alternative Energy and Energy Conservation Patent Exemption (Personal) (Massachusetts) Industry Recruitment/Support Massachusetts General Public/Consumer Biomass

83

Advanced Heat Transfer Fluids and Novel Thermal Storage Concepts...  

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

Systems Lehigh University: Novel Thermal Storage Technologies for Concentrating Solar Power Generation Terrafore: Heat Transfer and Latent Heat Storage in Inorganic Molten...

84

Solar heat receiver  

DOE Patents (OSTI)

A receiver is described for converting solar energy to heat a gas to temperatures from 700 to 900/sup 0/C. The receiver is formed to minimize impingement of radiation on the walls and to provide maximum heating at and near the entry of the gas exit. Also, the receiver is formed to provide controlled movement of the gas to be heated to minimize wall temperatures. The receiver is designed for use with gas containing fine heat absorbing particles, such as carbon particles.

Hunt, A.J.; Hansen, L.J.; Evans, D.B.

1982-09-29T23:59:59.000Z

85

INTERACTION OF A SOLAR SPACE HEATING SYSTEM WITH THE THERMAL BEHAVIOR OF A BUILDING  

E-Print Network (OSTI)

solar con- trols test facility at Lawrence Berkeley Laboratory The interaction of baseboard, radiant panel, and furnace

Vilmer, Christian

2013-01-01T23:59:59.000Z

86

Solar energy thermalization and storage device  

DOE Patents (OSTI)

A passive solar thermalization and thermal energy storage assembly which is visually transparent. The assembly consists of two substantial parallel, transparent wall members mounted in a rectangular support frame to form a liquid-tight chamber. A semitransparent thermalization plate is located in the chamber, substantially paralled to and about equidistant from the transparent wall members to thermalize solar radiation which is stored in a transparent thermal energy storage liquid which fills the chamber. A number of the devices, as modules, can be stacked together to construct a visually transparent, thermal storage wall for passive solar-heated buildings.

McClelland, John F. (Ames, IA)

1981-09-01T23:59:59.000Z

87

SUBMITTED TO GRL 1 Thermal Anisotropies in the Solar Wind  

E-Print Network (OSTI)

SUBMITTED TO GRL 1 E Thermal Anisotropies in the Solar Wind: vidence of Heating by Interstellar cyclotron instabilit s generated by newly created pickup ions and heats the thermal solar wind protons TO GRL 2 T Introduction he thermal anisotropy of the solar wind is the ratio between the temperatures p

Richardson, John

88

List of Solar Thermal Electric Incentives | Open Energy Information  

Open Energy Info (EERE)

Electric Incentives Electric Incentives Jump to: navigation, search The following contains the list of 548 Solar Thermal Electric Incentives. CSV (rows 1-500) CSV (rows 501-548) Incentive Incentive Type Place Applicable Sector Eligible Technologies Active 30% Business Tax Credit for Solar (Vermont) Corporate Tax Credit Vermont Commercial Industrial Photovoltaics Solar Space Heat Solar Thermal Electric Solar Thermal Process Heat Solar Water Heat No APS - Net Metering (Arizona) Net Metering Arizona Commercial Industrial Residential Nonprofit Schools Local Government State Government Fed. Government Agricultural Institutional Solar Thermal Electric Photovoltaics Wind energy Biomass No Advanced Energy Fund (Ohio) Public Benefits Fund Ohio Commercial Industrial Institutional

89

Scattering Solar Thermal Concentrators  

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

"This fact sheet describes a scattering solar thermal concentrators project awarded under the DOE's 2012 SunShot Concentrating Solar Power R&D award program. The team, led by the Pennsylvania State University, is working to demonstrate a new, scattering-based approach to concentrating sunlight that aims to improve the overall performance and reliability of the collector field. The research team aims to show that scattering solar thermal collectors are capable of achieving optical performance equal to state-of-the-art parabolic trough systems, but with the added benefits of immunity to wind-load tracking error, more efficient land use, and utilization of stationary receivers."

90

Chapter 10 - Solar Thermal Power Systems  

Science Journals Connector (OSTI)

Abstract Chapter 10 deals with solar thermal power systems. Initially, the general design considerations are given followed by the presentation of the three basic technologies. These include the parabolic trough collector system, which includes a description of the PTC power plant and outlook of the technology; the power tower systems and the dish systems. This is followed by the thermal analysis of the basic cycles of solar thermal power plants. Subsequently, solar updraft tower systems are examined, which include the initial steps and first demonstration, and the thermal analysis. Finally, solar ponds are examined, which is a form of large solar collector and storage system that can be used for solar power generation and include practical design considerations, salty water transmission estimation, methods of heat extraction, description of two large experimental solar ponds, and applications of solar ponds.

Soteris A. Kalogirou

2014-01-01T23:59:59.000Z

91

Solar pool heating | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Solar pool heating Jump to: navigation, search Pool Heating is a great use for solar energy. Solar pool heating systems can be very effective and inexpensive. The pool itself is the thermal storage unit and the existing pump that the pool uses will circulate the water through the solar collectors. Pool Covers Having a good pool cover is one of the best ways to conserve energy and use solar energy to heat the pool. If you don't have a pool cover the solar energy being used will be wasted and you will be using three times as much energy that is necessary. Solar Sun Rings- instead of using a full pool cover sun rings are

92

Solar heated swimming pool  

SciTech Connect

A swimming pool construction incorporating solar heating means to heat the pool water to a desired level. The pool includes a surrounding safety fence supported by a plurality of fence supports which are hollow and which include internal passageways. The pool water is passed through the pool support passageways whereupon it absorbs heat from the sidewalls of the fence supports, the surfaces of which have been heated by solar radiation. The fence supports can be made of plastic or other materials, but preferably are dark for improved absorptivity. The pool water can be passed serially through each of the fence supports and suitable thermostat control means can be provided to limit the water temperature increase.

Pettit, F.M.

1984-10-02T23:59:59.000Z

93

Solar Thermal Energy Storage  

Science Journals Connector (OSTI)

Various types of thermal energy storage systems are introduced and their importance and desired characteristics are outlined. Sensible heat storage, which is one of the most commonly used storage systems in pract...

E. Paykoç; S. Kakaç

1987-01-01T23:59:59.000Z

94

Software-as-a-Service Optimised Scheduling of a Solar-Assisted HVAC System with Thermal Storage  

E-Print Network (OSTI)

1980, but its thermal solar and storage systems received achiller. A 30 m heat storage tank solar decouples heatfacility with thermal storage and solar- assisted HVAC for

Mammoli, Andrea

2014-01-01T23:59:59.000Z

95

Storage in Solar Process Heat Applications  

Science Journals Connector (OSTI)

Abstract The subject of this paper is the integration of solar energy into industrial heat supply systems – focusing on the use of solar tanks. Within the framework of the project “Solar Process Heat Standards” funded by the Federal Ministry for the Environment, Nature Conservation and Nuclear Safety (BMU) load profiles of electroplating processes were measured, a typical load profile was described and simulations were done regarding the dimensioning of the solar tank volume. Depending on the load profile and process temperature, either a large tank volume or a tank-less system leads to the highest solar yields. Furthermore, a new concept of hydraulic tank integration is presented. It facilitates the quick supply of high solar temperatures which are often demanded for solar process heat applications. State of the art tank integration makes the solar system thermally inert, while simulations and measurements have already proven a considerable advantage of the new alternative. Moreover four solar process heat applications are analyzed; three belong to the electroplating industry while the fourth uses solar energy for heating water in the food industry (193 – 570 m2). Especially two of the four solar process heat plants presented severe operating errors and a high optimizing potential. One solar plant was improved in order to facilitate the new storage concept. This modification ensures the possibility of shifting between the conventional storage integration and the innovative approach for a comparative evaluation.

Sebastian Schramm; Mario Adam

2014-01-01T23:59:59.000Z

96

Project Profile: National Solar Thermal Test Facility  

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

The first solar receivers ever tested in the world were tested at the National Solar Thermal Test Facility (NSTTF). The receivers were each rated up to 5 megawatts thermal (MWt). Receivers with various working fluids have been tested here over the years, including air, water-steam, molten salt, liquid sodium, and solid particles. The NSTTF has also been used for a large variety of other tests, including materials tests, simulation of thermal nuclear pulses and aerodynamic heating, and ablator testing for NASA.

97

Solar Heating and Cooling  

Science Journals Connector (OSTI)

...radiation during good weather are not very high, and...Atmospheric Administration weather ser-vice measures total...largely to experi-mental operation of 3-ton LiBr-H2O...a million solar water heaters are in use in these countries...air House heating load Cold air return 'S T~rgeo...

John A. Duffie; William A. Beckman

1976-01-16T23:59:59.000Z

98

Solar Industrial Process Heat Production  

Science Journals Connector (OSTI)

An overview of state of the art in producing industrial process heat via solar energy is presented. End-use matching methodology for assessing solar industrial process heat application potential is described f...

E. Özil

1987-01-01T23:59:59.000Z

99

Solar heating system  

DOE Patents (OSTI)

An improved solar heating system in which the incident radiation of the sun is absorbed on collector panels, transferred to a storage unit and then distributed as heat for a building and the like. The improvement is obtained by utilizing a storage unit comprising separate compartments containing an array of materials having different melting points ranging from 75.degree. to 180.degree. F. The materials in the storage system are melted in accordance with the amount of heat absorbed from the sun and then transferred to the storage system. An efficient low volume storage system is provided by utilizing the latent heat of fusion of the materials as they change states in storing and releasing heat for distribution.

Schreyer, James M. (Oak Ridge, TN); Dorsey, George F. (Concord, TN)

1982-01-01T23:59:59.000Z

100

List of Solar Pool Heating Incentives | Open Energy Information  

Open Energy Info (EERE)

Heating Incentives Heating Incentives Jump to: navigation, search The following contains the list of 118 Solar Pool Heating Incentives. CSV (rows 1 - 118) Incentive Incentive Type Place Applicable Sector Eligible Technologies Active APS - Renewable Energy Incentive Program (Arizona) Utility Rebate Program Arizona Commercial Residential Anaerobic Digestion Biomass Daylighting Geothermal Electric Ground Source Heat Pumps Landfill Gas Other Distributed Generation Technologies Photovoltaics Small Hydroelectric Solar Pool Heating Solar Space Heat Solar Thermal Process Heat Solar Water Heat Wind energy Yes Alternative Energy Personal Property Tax Exemption (Michigan) Property Tax Incentive Michigan Commercial Industrial Biomass CHP/Cogeneration Fuel Cells Microturbines Photovoltaics

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


101

Heat Transfer Fluids for Solar Water Heating Systems | Department of Energy  

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

Heat Transfer Fluids for Solar Water Heating Systems Heat Transfer Fluids for Solar Water Heating Systems Heat Transfer Fluids for Solar Water Heating Systems May 16, 2013 - 3:02pm Addthis Illustration of a solar water heater. Illustration of a solar water heater. Heat-transfer fluids carry heat through solar collectors and a heat exchanger to the heat storage tanks in solar water heating systems. When selecting a heat-transfer fluid, you and your solar heating contractor should consider the following criteria: Coefficient of expansion - the fractional change in length (or sometimes in volume, when specified) of a material for a unit change in temperature Viscosity - resistance of a liquid to sheer forces (and hence to flow) Thermal capacity - the ability of matter to store heat Freezing point - the temperature below which a liquid turns into a

102

City of Dubuque - Solar Thermal Licensing Requirement | Department of  

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

City of Dubuque - Solar Thermal Licensing Requirement City of Dubuque - Solar Thermal Licensing Requirement City of Dubuque - Solar Thermal Licensing Requirement < Back Eligibility Construction Installer/Contractor Savings Category Heating & Cooling Solar Water Heating Program Info State Iowa Program Type Solar/Wind Contractor Licensing Provider City of Dubuque The City of Dubuque requires a Solar Thermal License in order for a person to install a solar thermal project on a home or business. The requirement does not apply to solar photovoltaics. The licensing requirement can be met one of two ways. An installer may be Solar Thermal Certified by the North American Board of Certified Energy Practitioners (NABCEP) or An installer may complete the Northeast Iowa Community College Solar Thermal Training Installers are also required to obtain a permit before altering or

103

Chapter 5 - Solar Water-Heating Systems  

Science Journals Connector (OSTI)

Abstract Chapter 5 is on solar water-heating systems. Both passive and active systems are described. Passive systems include thermosiphon and integrated collector storage systems. The former include theoretical performance of thermosiphon solar water heaters, reverse circulation in thermosiphon systems, vertical against horizontal tank configurations, freeze protection, and tracking thermosiphons. Subsequently, active systems are described, which include direct circulation systems, indirect water-heating systems, air water-heating systems, heat pump systems and pool heating systems, which include the analysis of various heat losses like evaporation, radiation, convection heat losses, make-up water load, and solar radiation-heat gain. Then the characteristics and thermal analysis of heat storage systems for both water and air systems are presented. The module and array design methods are then described and include the effects of shading, thermal expansion, galvanic corrosion, array sizing, heat exchangers, pipe and duct losses, partially shaded collectors and over-temperature protection—followed by an analysis of the characteristics of differential thermostats. Finally, methods to calculate the hot water demand are given as well as a review of international standards used to evaluate the solar water heaters performance. The chapter includes also simple system models and practical considerations for the setup of solar water-heating systems, which include: pipes, supports and insulation; pumps; valves and instrumentation.

Soteris A. Kalogirou

2014-01-01T23:59:59.000Z

104

Encouraging Combined Heat and Power in California Buildings  

E-Print Network (OSTI)

solar thermal utilization photovoltaic solar thermal electric storage heatDER technologies as PV, solar thermal, electric and heat

Stadler, Michael

2014-01-01T23:59:59.000Z

105

Thermal Storage of Solar Energy  

Science Journals Connector (OSTI)

Thermal storage is needed to improve the efficiency and usefulness of solar thermal systems. The paper indicates the main storage ... which would greatly increase the practical use of solar energy — is more diffi...

H. Tabor

1984-01-01T23:59:59.000Z

106

Solar-Assisted Technology Provides Heat for California Industries  

E-Print Network (OSTI)

Solar-Assisted Technology Provides Heat for California Industries Industrial/Agriculture/Water End 2011 The Issue Solar thermal technology focuses the Sun's rays to heat water, and is a promising renewable resource for California's industrial sector. Commercially available solar water heating

107

Thermal Solar Power Plants Experience  

Science Journals Connector (OSTI)

In parallel with rising interest in solar power generation, several solar thermal facilities of different configuration and size were ... were designed as modest-size experimental or prototype solar power plants ...

W. Grasse; H. P. Hertlein; C.-J. Winter; G. W. Braun

1991-01-01T23:59:59.000Z

108

Passive Solar Space Heat | Open Energy Information  

Open Energy Info (EERE)

Passive Solar Space Heat Incentives Retrieved from "http:en.openei.orgwindex.php?titlePassiveSolarSpaceHeat&oldid26718...

109

New and Underutilized Technology: Solar Water Heating | Department of  

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

Solar Water Heating Solar Water Heating New and Underutilized Technology: Solar Water Heating October 7, 2013 - 9:02am Addthis The following information outlines key deployment considerations for solar water heating within the Federal sector. Benefits Solar water heating uses solar thermal collectors to heat water. Application Solar water heating is applicable in most building categories. Climate and Regional Considerations Solar water heating is best in regions with high insolation. Key Factors for Deployment The Energy Independence and Security Act (EISA) of 2007 requires 30% of hot water demand in new Federal buildings and major renovations to be met with solar water heating equipment providing it is life-cycle cost effective. Federal agencies must consider collector placement location to optimize

110

Testing thermocline filler materials and molten-salt heat transfer fluids for thermal energy storage systems used in parabolic trough solar power plants.  

SciTech Connect

Parabolic trough power systems that utilize concentrated solar energy to generate electricity are a proven technology. Industry and laboratory research efforts are now focusing on integration of thermal energy storage as a viable means to enhance dispatchability of concentrated solar energy. One option to significantly reduce costs is to use thermocline storage systems, low-cost filler materials as the primary thermal storage medium, and molten nitrate salts as the direct heat transfer fluid. Prior thermocline evaluations and thermal cycling tests at the Sandia National Laboratories' National Solar Thermal Test Facility identified quartzite rock and silica sand as potential filler materials. An expanded series of isothermal and thermal cycling experiments were planned and implemented to extend those studies in order to demonstrate the durability of these filler materials in molten nitrate salts over a range of operating temperatures for extended timeframes. Upon test completion, careful analyses of filler material samples, as well as the molten salt, were conducted to assess long-term durability and degradation mechanisms in these test conditions. Analysis results demonstrate that the quartzite rock and silica sand appear able to withstand the molten salt environment quite well. No significant deterioration that would impact the performance or operability of a thermocline thermal energy storage system was evident. Therefore, additional studies of the thermocline concept can continue armed with confidence that appropriate filler materials have been identified for the intended application.

Kelly, Michael James; Hlava, Paul Frank; Brosseau, Douglas A.

2004-07-01T23:59:59.000Z

111

SunShot Initiative: Low-Cost Solar Thermal Collector  

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

Low-Cost Solar Thermal Collector Low-Cost Solar Thermal Collector to someone by E-mail Share SunShot Initiative: Low-Cost Solar Thermal Collector on Facebook Tweet about SunShot Initiative: Low-Cost Solar Thermal Collector on Twitter Bookmark SunShot Initiative: Low-Cost Solar Thermal Collector on Google Bookmark SunShot Initiative: Low-Cost Solar Thermal Collector on Delicious Rank SunShot Initiative: Low-Cost Solar Thermal Collector on Digg Find More places to share SunShot Initiative: Low-Cost Solar Thermal Collector on AddThis.com... Concentrating Solar Power Systems Components Competitive Awards CSP Research & Development Thermal Storage CSP Recovery Act Baseload CSP SunShot Multidisciplinary University Research Initiative CSP Heat Integration for Baseload Renewable Energy Deployment National Laboratory Research & Development

112

SunShot Initiative: Scattering Solar Thermal Concentrators  

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

Scattering Solar Thermal Scattering Solar Thermal Concentrators to someone by E-mail Share SunShot Initiative: Scattering Solar Thermal Concentrators on Facebook Tweet about SunShot Initiative: Scattering Solar Thermal Concentrators on Twitter Bookmark SunShot Initiative: Scattering Solar Thermal Concentrators on Google Bookmark SunShot Initiative: Scattering Solar Thermal Concentrators on Delicious Rank SunShot Initiative: Scattering Solar Thermal Concentrators on Digg Find More places to share SunShot Initiative: Scattering Solar Thermal Concentrators on AddThis.com... Concentrating Solar Power Systems Components Competitive Awards CSP Research & Development Thermal Storage CSP Recovery Act Baseload CSP SunShot Multidisciplinary University Research Initiative CSP Heat Integration for Baseload Renewable Energy Deployment

113

Solar Heating and Air Conditioning  

Science Journals Connector (OSTI)

...given of the status of solar fired air conditioning...to an approach to cool storage in solar air conditioning systems...an assessment of cool storage for reducing peak electrical...rolling cylinder thermal energy storage device for compact...

1980-01-01T23:59:59.000Z

114

Performance model and annual yield comparison of parabolic-trough solar thermal power plants with either nitrogen or synthetic oil as heat transfer fluid  

Science Journals Connector (OSTI)

Abstract The majority of commercial parabolic-trough plants in the world operate with synthetic oil as heat transfer fluid in the solar field. However, the synthetic oils that are available at affordable cost present some challenges such as their flammability, environmental toxicity and a temperature limitation of around 400 °C. As alternative, this work proposes the use of pressurized nitrogen as heat transfer fluid. In order to analyze the feasibility of this technology, a comparison between a plant with nitrogen and a conventional plant with synthetic oil has been carried out. In both cases, 50 MWe parabolic-trough plants with 6 h of thermal storage are used as reference. A performance model including the solar field, the thermal storage system and the power block has been developed for each plant in the TRNSYS simulation software. This paper also describes the specifications, design and sizing of the solar field and explains the basic operation strategy applied in each model. Both annual simulations have been performed considering the same location, Almería (Spain), and meteorological data. In summary, the results show that similar net annual electricity productions can be attained for parabolic-trough plants with the same collection area using either nitrogen or synthetic oil as heat transfer fluid.

Mario Biencinto; Lourdes González; Eduardo Zarza; Luis E. Díez; Javier Muńoz-Antón

2014-01-01T23:59:59.000Z

115

NREL: Learning - Solar Process Heat  

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

Process Heat Process Heat Photo of part of one side of a warehouse wall, where a perforated metal exterior skin is spaced about a foot out from the main building wall to form part of the transpired solar collector system. A transpired collector is installed at a FedEx facility in Denver, Colorado. Commercial and industrial buildings may use the same solar technologies-photovoltaics, passive heating, daylighting, and water heating-that are used for residential buildings. These nonresidential buildings can also use solar energy technologies that would be impractical for a home. These technologies include ventilation air preheating, solar process heating, and solar cooling. Space Heating Many large buildings need ventilated air to maintain indoor air quality. In cold climates, heating this air can use large amounts of energy. But a

116

Tips: Passive Solar Heating and Cooling | Department of Energy  

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

Tips: Passive Solar Heating and Cooling Tips: Passive Solar Heating and Cooling Tips: Passive Solar Heating and Cooling April 24, 2012 - 4:18pm Addthis Tips: Passive Solar Heating and Cooling Using passive solar design to heat and cool your home can be both environmentally friendly and cost effective. In many cases, your heating costs can be reduced to less than half the cost of heating a typical home. Passive solar design can also help lower your cooling costs. Passive solar cooling techniques include carefully designed overhangs and using reflective coatings on windows, exterior walls, and roofs. Newer techniques include placing large, insulated windows on south-facing walls and putting thermal mass, such as a concrete slab floor or a heat-absorbing wall, close to the windows. A passive solar house requires careful design and siting, which vary by

117

Tips: Passive Solar Heating and Cooling | Department of Energy  

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

Passive Solar Heating and Cooling Passive Solar Heating and Cooling Tips: Passive Solar Heating and Cooling April 24, 2012 - 4:18pm Addthis Tips: Passive Solar Heating and Cooling Using passive solar design to heat and cool your home can be both environmentally friendly and cost effective. In many cases, your heating costs can be reduced to less than half the cost of heating a typical home. Passive solar design can also help lower your cooling costs. Passive solar cooling techniques include carefully designed overhangs and using reflective coatings on windows, exterior walls, and roofs. Newer techniques include placing large, insulated windows on south-facing walls and putting thermal mass, such as a concrete slab floor or a heat-absorbing wall, close to the windows. A passive solar house requires careful design and siting, which vary by

118

Solar thermal propulsion status and future  

SciTech Connect

The status of solar absorber/thruster research is reviewed, and potential future applications and advanced solar thermal propulsion concepts are discussed. Emphasis is placed on two concepts, the windowless heat exchanger cavity and the porous material absorption concepts. Mission studies demonstrate greater than 50 percent increase in payload compared to chemical propulsion for a LEO-to-GEO mission. Alternative missions that have been considered for this concept include the Thousand Astronomical Unit mission, LEO-to-lunar orbit, and other SEI missions. It is pointed out that solar thermal propulsion is inherently simple and capable of moderate-to-high engine performance at moderate-to-low thrust levels. 15 refs.

Shoji, J.M.; Frye, P.E.; Mcclanahan, J.A. (Rockwell International Corp., Rocketdyne Div., Canoga Park, CA (United States))

1992-03-01T23:59:59.000Z

119

Thermal Insulation in Solar Thermal Devices  

Science Journals Connector (OSTI)

Thermal Insulation is a device or a practice which is used in a system for minimising heat losses caused due to transfer of heat from hotter to colder regions. It is one of the cheapest methods of energy conse...

B. C. Raychaudhuri

1986-01-01T23:59:59.000Z

120

Domestic Heating and Thermal Insulation  

Science Journals Connector (OSTI)

... DIGEST 133 of the Building Research Station, entitled "Domestic Heating and Thermal Insulation" (Pp. 7. London : H.M. Stationery Office, 1960. 4insulation, the standard of heating, the ventilation-rate and the length of the heating season ...

1960-09-17T23:59:59.000Z

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


121

Rankline-Brayton engine powered solar thermal aircraft  

DOE Patents (OSTI)

A solar thermal powered aircraft powered by heat energy from the sun. A Rankine-Brayton hybrid cycle heat engine is carried by the aircraft body for producing power for a propulsion mechanism, such as a propeller or other mechanism for enabling sustained free flight. The Rankine-Brayton engine has a thermal battery, preferably containing a lithium-hydride and lithium mixture, operably connected to it so that heat is supplied from the thermal battery to a working fluid. A solar concentrator, such as reflective parabolic trough, is movably connected to an optically transparent section of the aircraft body for receiving and concentrating solar energy from within the aircraft. Concentrated solar energy is collected by a heat collection and transport conduit, and heat transported to the thermal battery. A solar tracker includes a heliostat for determining optimal alignment with the sun, and a drive motor actuating the solar concentrator into optimal alignment with the sun based on a determination by the heliostat.

Bennett, Charles L. (Livermore, CA)

2012-03-13T23:59:59.000Z

122

Rankine-Brayton engine powered solar thermal aircraft  

DOE Patents (OSTI)

A solar thermal powered aircraft powered by heat energy from the sun. A Rankine-Brayton hybrid cycle heat engine is carried by the aircraft body for producing power for a propulsion mechanism, such as a propeller or other mechanism for enabling sustained free flight. The Rankine-Brayton engine has a thermal battery, preferably containing a lithium-hydride and lithium mixture, operably connected to it so that heat is supplied from the thermal battery to a working fluid. A solar concentrator, such as reflective parabolic trough, is movably connected to an optically transparent section of the aircraft body for receiving and concentrating solar energy from within the aircraft. Concentrated solar energy is collected by a heat collection and transport conduit, and heat transported to the thermal battery. A solar tracker includes a heliostat for determining optimal alignment with the sun, and a drive motor actuating the solar concentrator into optimal alignment with the sun based on a determination by the heliostat.

Bennett, Charles L. (Livermore, CA)

2009-12-29T23:59:59.000Z

123

Solar Thermal Incentive Program | Department of Energy  

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

Thermal Incentive Program Thermal Incentive Program Solar Thermal Incentive Program < Back Eligibility Agricultural Commercial Fed. Government Industrial Institutional Local Government Multi-Family Residential Nonprofit Residential Schools State Government Savings Category Heating & Cooling Solar Water Heating Maximum Rebate Residential: $4,000 per site/meter Non-residential: $25,000 per site/meter Incentive also capped at 80% of calculated existing thermal load Program Info Funding Source RPS surcharge Start Date 12/10/2010 Expiration Date 12/31/2015 State New York Program Type State Rebate Program Rebate Amount $1.50 per kWh displaced annually, for displacement of up to 80% of calculated existing thermal load Provider New York State Energy Research and Development Authority The New York State Energy Research and Development Authority (NYSERDA)

124

Passive solar heating and analysis  

SciTech Connect

Passive solar heating experience and analysis techniques are reviewed with emphasis on annual auxiliary heat requirement. The role of analysis in the design of passive solar buildings is discussed. Selected results for existing systems are presented for locations in Saudi Arabia and climatically similar locations in the US. Advanced systems in the research stage are described.

Jones, R.W.

1984-01-01T23:59:59.000Z

125

Sustainable Heat Power Europe GmbH formerly Solar Heat Power Europe GmbH |  

Open Energy Info (EERE)

Heat Power Europe GmbH formerly Solar Heat Power Europe GmbH Heat Power Europe GmbH formerly Solar Heat Power Europe GmbH Jump to: navigation, search Name Sustainable Heat & Power Europe GmbH (formerly Solar Heat & Power Europe GmbH) Place Hamburg, Schleswig-Holstein, Germany Sector Solar Product Engineering company involved in the project development, design and construction of solar thermal, PV and biogas power plants. References Sustainable Heat & Power Europe GmbH (formerly Solar Heat & Power Europe GmbH)[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Sustainable Heat & Power Europe GmbH (formerly Solar Heat & Power Europe GmbH) is a company located in Hamburg, Schleswig-Holstein, Germany .

126

FEMP--Solar Water Heating  

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

More than 1 million homeowners and 200,000 busi- More than 1 million homeowners and 200,000 busi- nesses in the United States are using the sun to heat domestic water efficiently in almost any climate. In summer, a solar system properly sized for a resi- dential building can meet 100% of the building's water-heating needs in most parts of the country. In winter, the system might meet only half of this need, so another source of heat is used to back up the solar system. In either case, solar water heating helps to save energy, reduce utility costs, and preserve the environment. A solar water-heating system's performance depends primarily on the outdoor temperature, the temperature to which the water is heated, and the amount of sunlight striking the collector-the device that actually captures the sun's energy.

127

Status of Solar Thermal Conversion in China  

Science Journals Connector (OSTI)

China has an abundant solar energy resource. Solar thermal conversion systems have been studied for more than 25 years and solar thermal industry has been developing since 1990’s....2 solar collectors were sold a...

Yin Zhiqiang

2009-01-01T23:59:59.000Z

128

Solar Water Heating Webinar | Department of Energy  

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

Weatherization Assistance Program Pilot Projects Solar Water Heating Webinar Solar Water Heating Webinar Watch a recording of National Renewable Energy Laboratory (NREL)...

129

Waverly Light and Power - Residential Solar Thermal Rebates | Department of  

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

Solar Thermal Rebates Solar Thermal Rebates Waverly Light and Power - Residential Solar Thermal Rebates < Back Eligibility Residential Savings Category Heating & Cooling Solar Water Heating Maximum Rebate $3,500 Program Info Start Date 07/01/2009 State Iowa Program Type Utility Rebate Program Rebate Amount 30/sq. foot of collector area Provider Waverly Light and Power Waverly Light and Power (WL&P) offers rebates for solar hot water heating systems to its residential customers. All purchases must be pre-approved through WL&P's solar water heater application process. In addition, residential customers must obtain a county-issued permit prior to installing a solar water heating system. There is a limit of one rebate per address. Funding is available until the rebate fund is exhausted.

130

Software-as-a-Service Optimised Scheduling of a Solar-Assisted HVAC System with Thermal Storage  

E-Print Network (OSTI)

performance of a solar-thermal- assisted hvac system. Energyfor rows of fixed solar thermal collectors using flatassisted by a 232 m solar thermal array providing heat to a

Mammoli, Andrea

2014-01-01T23:59:59.000Z

131

Laser Texturing for Solar Thermal Systems  

Science Journals Connector (OSTI)

High solar absorptance and low thermal emittance is desired for absorber surface in solar thermal systems. Molybdenum surface was textured by pulsed fiber laser and...

Shah, Ankit; Gupta, Mool

132

E-Print Network 3.0 - advanced solar thermal Sample Search Results  

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

..) - residential and commercial. (A. Athienitis) 2. Solar thermal systems for heating and cooling (DHW... and optimization tool. THEME 1 Integration THEME 2 Thermal THEME...

133

Two-tank indirect thermal storage designs for solar parabolic trough power plants.  

E-Print Network (OSTI)

??The performance of a solar thermal parabolic trough plant with thermal storage is dependent upon the arrangement of the heat exchangers that ultimately transfer energy… (more)

Kopp, Joseph E.

2009-01-01T23:59:59.000Z

134

Solar heat collector  

SciTech Connect

An evacuated double-tubing solar heat collector is described comprising: an inner tube having an open end and a closed end; a selective absorption film applied over an exterior surface of the inner tube; an outer tube having an open end and a closed end; the inner tube being constructed to be received within the outer tube; and a substantially continuous annular coil spring ring being substantially found in cross section and of a predetermined thickness. The coil spring ring is disposed between and engages an interior surface of the outer tube and the exterior surface of the inner tube for spacing and resiliently supporting the inner tube relative to the outer tube. The ring is freely rotatably positioned to be moved axially along the length of the inner tube due only to frictional forces exerted on the coil spring. The coil spring ring is positioned on the inner tube at approximately a middle position along the length of the inner tube by being initially positioned on the inner tube adjacent to the closed end thereof and rotated upon itself axially along the inner tube only by frictional engagement with the interior surface of the outer tube as the inner tube is inserted into the open end of the outer tube and moved to a fully inserted position within the outer tube. The open end of the inner tube and the open end of the outer tube are fused to form a junction and hermetically sealed.

Takeuchi, H.; Mikiya, T.

1987-03-17T23:59:59.000Z

135

Solar Heating System Estimating  

Science Journals Connector (OSTI)

The Canadian Federal Government has embarked on a S$225,000,000.00 programme to help develop solar energy in Canada. The programme is being handled by the ... of the federal government who will be installing solar

Don Hampton

1983-01-01T23:59:59.000Z

136

CALIFORNIA SOLAR INITIATIVE-THERMAL PROGRAMHANDBOOK  

E-Print Network (OSTI)

CALIFORNIA SOLAR INITIATIVE-THERMAL PROGRAMHANDBOOK CALIFORNIA PUBLIC UTILITIES California Solar Initiative Thermal Program Handbook i 1. Introduction to CSI-Thermal Program ..........................................................................3 2.1 Participants in the CSI-Thermal Program

137

Solar air heating system for combined DHW and space heating  

E-Print Network (OSTI)

Solar air heating system for combined DHW and space heating solar air collector PV-panel fannon-return valve DHW tank mantle cold waterhot water roof Solar Energy Centre Denmark Danish Technological Institute SEC-R-29 #12;Solar air heating system for combined DHW and space heating Søren �stergaard Jensen

138

solar thermal | OpenEI  

Open Energy Info (EERE)

thermal thermal Dataset Summary Description This dataset presents summary information related to world solar energy. It is part of a supporting dataset for the book World On the Edge: How to Prevent Environmental and Economic Collapse by Lester R. Source Earth Policy Institute Date Released January 12th, 2011 (3 years ago) Date Updated Unknown Keywords EU solar solar PV solar thermal world Data application/vnd.ms-excel icon Excel spreadsheet, summary solar energy data on multiple tabs (xls, 145.9 KiB) Quality Metrics Level of Review Some Review Comment Temporal and Spatial Coverage Frequency Time Period License License Open Data Commons Attribution License Comment "Reuse of our data is permitted. We merely ask that wherever it is listed, it be appropriately cited"

139

Solar Thermal Energy Storage Device: Hybrid Nanostructures for High-Energy-Density Solar Thermal Fuels  

SciTech Connect

HEATS Project: MIT is developing a thermal energy storage device that captures energy from the sun; this energy can be stored and released at a later time when it is needed most. Within the device, the absorption of sunlight causes the solar thermal fuel’s photoactive molecules to change shape, which allows energy to be stored within their chemical bonds. A trigger is applied to release the stored energy as heat, where it can be converted into electricity or used directly as heat. The molecules would then revert to their original shape, and can be recharged using sunlight to begin the process anew. MIT’s technology would be 100% renewable, rechargeable like a battery, and emissions-free. Devices using these solar thermal fuels—called Hybrisol—can also be used without a grid infrastructure for applications such as de-icing, heating, cooking, and water purification.

None

2012-01-09T23:59:59.000Z

140

Numerical analysis of the influence of inclination angle and wind on the heat losses of cavity receivers for solar thermal power towers  

Science Journals Connector (OSTI)

Abstract The convective heat losses of cavity receivers for solar thermal power towers are of great importance for the overall efficiency of the whole system. However, the influence of wind on these losses has not been studied sufficiently for large scale cavity receivers with different inclination angles. In this present study the impact of head-on and side-on wind on large cavity receivers with inclination angles in the range of 0° (horizontal cavity) to 90° (vertical cavity) is analyzed numerically. The simulation results are compared to data published in literature. When no wind is present the losses decrease considerably with increasing inclination angle of the receiver. In case of a horizontal receiver wind does not have a huge impact on the losses: they remain constant on a high level. In case of an inclined cavity wind increases the heat losses significantly in most of the cases, although the highest absolute value of the losses occurs for the horizontal receiver exposed to head on wind. In some cases, when wind is flowing parallel to the aperture plane, a reduction of the heat losses is observed. The temperature distribution in the cavity is analyzed in order to explain the impact of wind on the heat losses. Wind in general causes a shrinking of the zone with uniform high temperature in the upper region of the cavity, whereas wind flowing parallel to the aperture plane additionally inhibits hot air from leaving the cavity and therefore leads to an increased temperature in the lower zone.

Robert Flesch; Hannes Stadler; Ralf Uhlig; Robert Pitz-Paal

2014-01-01T23:59:59.000Z

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


141

Impact of Ageing on Thermal Efficiency of Solar Thermal Collectors  

Science Journals Connector (OSTI)

Today it is common practice to calculate the performance of solar thermal systems or solar collectors based on the results of a thermal performance test carried out with a new solar collector. However, for an int...

Elke Streicher; Stephan Fischer…

2009-01-01T23:59:59.000Z

142

Solar Heating and Cooling  

Science Journals Connector (OSTI)

...of desert solar energy farm with 30 percent conversion...85 percent of the solar farm energy now reflected back...Washington, D.C. 20550. Wind Power Martin Wolf (19...counting the cost of the offshore platforms, would thus...15 billion. If these wind generators were placed...

John I. Yellott

1974-08-09T23:59:59.000Z

143

Performance Study of Thermoelectric Solar-Assisted Heat Pump with Reflectors  

Science Journals Connector (OSTI)

The simultaneous conversion of solar radiation into thermal and electrical energy in a thermoelectric (TE) solar-assisted heat pump is, for the purposes of ... plate reflectors have been mounted on a TE solar col...

C. Lertsatitthanakorn; S. Soponronnarit…

2014-06-01T23:59:59.000Z

144

Scattering Solar Thermal Concentrators  

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

is a rendering of a scattering solar concentrator. Light collected by a cylindrical Fresnel lens is focused within a curved glass "guide" sheet, where it is redirected into...

145

Made in Minnesota Solar Thermal Rebate | Department of Energy  

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

Made in Minnesota Solar Thermal Rebate Made in Minnesota Solar Thermal Rebate Made in Minnesota Solar Thermal Rebate < Back Eligibility Commercial Multi-Family Residential Residential Savings Category Heating & Cooling Solar Swimming Pool Heaters Water Heating Buying & Making Electricity Commercial Heating & Cooling Maximum Rebate Single-Family Residential: $2,500 Multi-Family Residential: $5,000 Commercial: $25,000 Program Info Start Date 1/1/2014 Expiration Date 12/31/2023 State Minnesota Program Type State Rebate Program Rebate Amount 25% Provider Minnesota Department of Commerce Beginning in 2014, the Department of Commerce will offer a Made in Minnesota Solar Thermal Rebate program. Rebates are 25% of installed costs, with a $2,500 maximum for residential systems, $5,000 maximum for multi-family residential systems, and $25,000 for commercial systems.

146

The Added Economic and Environmental Value of Solar Thermal Systems in Microgrids with Combined Heat and Power  

E-Print Network (OSTI)

with or without combined heat and power (CHP) and contributein Microgrids with Combined Heat and Power Chris Marnay,Microgrids with Combined Heat and Power 1 Chris Marnay a) ,

Marnay, Chris

2010-01-01T23:59:59.000Z

147

The Exchange-Value of Solar Thermal Energy  

Science Journals Connector (OSTI)

In Sweden there is a tendency that alternative energy will develop on market premises. In this ... I suggest that the low exergy value of solar thermal heat limits the technique“s commodification, i ... . By appl...

Johan Leidi

2009-01-01T23:59:59.000Z

148

Enhancement of specific heat capacity of high-temperature silica-nanofluids synthesized in alkali chloride salt eutectics for solar thermal-energy  

E-Print Network (OSTI)

chloride salt eutectics for solar thermal-energy storage applications Donghyun Shin, Debjyoti Banerjee for the anoma- lous enhancement of thermal conductivity over that of the neat solvent. Eastman et al. [5] reported thermal conductivity enhance- ment of 30% and 60% for water based nanofluids of Al2O3 and Cu

Banerjee, Debjyoti

149

Active Solar Heating Basics | Department of Energy  

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

Active Solar Heating Basics Active Solar Heating Basics Active Solar Heating Basics August 16, 2013 - 3:23pm Addthis There are two basic types of active solar heating systems based on the type of fluid-either liquid or air-that is heated in the solar energy collectors. The collector is the device in which a fluid is heated by the sun. Liquid-based systems heat water or an antifreeze solution in a "hydronic" collector, whereas air-based systems heat air in an "air collector." Both of these systems collect and absorb solar radiation, then transfer the solar heat directly to the interior space or to a storage system, from which the heat is distributed. If the system cannot provide adequate space heating, an auxiliary or back-up system provides the additional heat. Liquid systems are more often used when storage is included, and are well

150

Rules of thumb for passive solar heating  

SciTech Connect

Rules of thumb are given for passive solar systems for: (1) sizing solar glazing for 219 cities, (2) sizing thermal storage mass, and (3) building orientation.

Balcomb, J.D.

1980-01-01T23:59:59.000Z

151

Small solar (thermal) water-pumping system  

SciTech Connect

A small solar (thermal) water pump phototype was tested. The pump works on an organic Rankine cycle using refrigerant R113. The design of the pump is described. Detailed temperature and pressure measurements of the working fluid for different operating conditions are performed. The behaviour of the cycle is analysed to get a clear picture of the thermodynamic process. Power-characteristic curves are obtained by a systematic variation of water temperature, pumping head and heat input. 10 refs., 13 figs., 2 tabs.

Spindler, K.; Hahne, E. [Universitaet Stuttgart (Germany)] [Universitaet Stuttgart (Germany); Chandwalker, K. [Stiletto Engineers, Hyderabad (India)] [Stiletto Engineers, Hyderabad (India)

1996-07-01T23:59:59.000Z

152

Phase Change Materials for Thermal Energy Storage in Concentrated Solar Thermal Power Plants  

E-Print Network (OSTI)

ENERGY STORAGE FOR CONCENTRATING SOLAR POWER PLANTS,”Thermal Energy Storage in Concentrated Solar Thermal PowerThermal Energy Storage in Concentrated Solar Thermal Power

Hardin, Corey Lee

2011-01-01T23:59:59.000Z

153

Phase Change Materials for Thermal Energy Storage in Concentrated Solar Thermal Power Plants  

E-Print Network (OSTI)

CHANGE THERMAL ENERGY STORAGE FOR CONCENTRATING SOLAR POWERfor Thermal Energy Storage in Concentrated Solar Thermalfor Thermal Energy Storage in Concentrated Solar Thermal

Hardin, Corey Lee

2011-01-01T23:59:59.000Z

154

Phase Change Materials for Thermal Energy Storage in Concentrated Solar Thermal Power Plants  

E-Print Network (OSTI)

and Background Solar thermal energy collection is anCHANGE THERMAL ENERGY STORAGE FOR CONCENTRATING SOLAR POWERfor Thermal Energy Storage in Concentrated Solar Thermal

Hardin, Corey Lee

2011-01-01T23:59:59.000Z

155

Thermal model of solar absorption HVAC systems  

SciTech Connect

This paper presents a thermal model that describes the performance of solar absorption HVAC systems. The model considers the collector array, the building cooling and heating loads, the absorption chiller and the high temperature storage. Heat losses from the storage tank and piping are included in the model. All of the results presented in the paper are for an array of flat plate solar collectors with black chrome (selective surface) absorber plates. The collector efficiency equation is used to calculate the useful heat output from the array. The storage is modeled as a non-stratified tank with polyurethane foam insulation. The system is assumed to operate continuously providing air conditioning during the cooling season, space heating during the winter and hot water throughout the year. The amount of heat required to drive the chiller is determined from the coefficient of performance of the absorption cycle. Results are presented for a typical COP of 0.7. The cooling capacity of the chiller is a function of storage (generator) temperature. The nominal value is 190 F (88 C) and the range of values considered is 180 F (82 C) to 210 F (99 C). Typical building cooling and heating loads are determined as a function of ambient conditions. Performance results are presented for Sacramento, CA and Washington, D.C. The model described in the paper makes use of National Solar Radiation Data Base (NSRDB) data and results are presented for these two locations. The uncertainties in the NSRDB are estimated to be in a range of 6% to 9%. This is a significant improvement over previously available data. The model makes it possible to predict the performance of solar HVAC systems and calculate quantities such as solar fraction, storage temperature, heat losses and parasitic power for every hour of the period for which data are available.

Bergquam, J.B.; Brezner, J.M. [California State Univ., Sacramento, CA (United States). Dept. of Mechanical Engineering; [Bergquam Energy Systems, Sacramento, CA (United States)

1995-11-01T23:59:59.000Z

156

Solar Water Heating: SPECIFICATION, CHECKLIST AND GUIDE | Department...  

Energy Savers (EERE)

Solar Water Heating: SPECIFICATION, CHECKLIST AND GUIDE Solar Water Heating: SPECIFICATION, CHECKLIST AND GUIDE Solar Water Heating: SPECIFICATION, CHECKLIST AND GUIDE, from the...

157

Tidal Heating of Extra-Solar Planets  

E-Print Network (OSTI)

Extra-solar planets close to their host stars have likely undergone significant tidal evolution since the time of their formation. Tides probably dominated their orbital evolution once the dust and gas had cleared away, and as the orbits evolved there was substantial tidal heating within the planets. The tidal heating history of each planet may have contributed significantly to the thermal budget that governed the planet's physical properties, including its radius, which in many cases may be measured by observing transit events. Typically, tidal heating increases as a planet moves inward toward its star and then decreases as its orbit circularizes. Here we compute the plausible heating histories for several planets with measured radii, using the same tidal parameters for the star and planet that had been shown to reconcile the eccentricity distribution of close-in planets with other extra-solar planets. Several planets are discussed, including for example HD 209458 b, which may have undergone substantial tidal heating during the past billion years, perhaps enough to explain its large measured radius. Our models also show that GJ 876 d may have experienced tremendous heating and is probably not a solid, rocky planet. Theoretical models should include the role of tidal heating, which is large, but time-varying.

Brian Jackson; Richard Greenberg; Rory Barnes

2008-02-29T23:59:59.000Z

158

Salt Gradient Solar Pond for Solar Heat Collection and Lang Term Storage  

Science Journals Connector (OSTI)

Work is described concerning the instrumentation, thermal modelling and laboratory tests on a salt gradient solar pond to be used for heat collection and storage. A densitameter capable of measuring the salinity....

V. Phillips; P. J. Unsworth; N. A. Al-Saleh

1983-01-01T23:59:59.000Z

159

Sandia National Laboratories: solar thermal storage  

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

Sandia Workers Received Entrepreneurial Spirit Awards On April 3, 2013, in Concentrating Solar Power, Energy, Facilities, National Solar Thermal Test Facility, News, News &...

160

Sandia National Laboratories: solar thermal energy storage  

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

thermal energy storage Sandia Solar Energy Test System Cited in National Engineering Competition On May 16, 2013, in Concentrating Solar Power, Energy, Energy Storage, Facilities,...

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


161

NREL: Climate Neutral Research Campuses - Solar Thermal  

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

cooling system in 2006. Back to Top Technology Basics The following resources explain the fundamentals of solar thermal technologies: NREL Solar Energy Basics: Descriptive overview...

162

Design of Coil Heat Exchanger for Remote-Storage Solar Water Heating System  

Science Journals Connector (OSTI)

A coil heat exchanger for hot water thermal storage was presented including the choice of the ... calculation of flow resistance. In this design, solar collector contour aperture area is 4.26...2, the volume of w...

Lv Cuiping; He Duanlian; Dou Jianqing

2009-01-01T23:59:59.000Z

163

Solar space heating | Open Energy Information  

Open Energy Info (EERE)

heating heating Jump to: navigation, search (The following text is derived from the United States Department of Energy's description of solar space heating technology.)[1] Contents 1 Space Heating 2 Passive Solar Space Heating 3 Active Solar Space Heating 4 References Space Heating A solar space-heating system can consist of a passive system, an active system, or a combination of both. Passive systems are typically less costly and less complex than active systems. However, when retrofitting a building, active systems might be the only option for obtaining solar energy. Passive Solar Space Heating Passive solar space heating takes advantage of warmth from the sun through design features, such as large south-facing windows, and materials in the floors or walls that absorb warmth during the day and release that warmth

164

Solar Heating with Annual Heat Storage — Modelling and Practice  

Science Journals Connector (OSTI)

Central solar heating systems with seasonal heat storage are recognized as one of the most potential forms of solar energy utilization at northern latitudes. Because of ... and energy flows of a full-scale distri...

P. D. Lund; S. S. Peltola

1984-01-01T23:59:59.000Z

165

Experimental study of a photovoltaic solar-assisted heat-pump/heat-pipe system  

Science Journals Connector (OSTI)

A practical design for a heat pump with heat-pipe photovoltaic/thermal (PV/T) collectors is presented. The hybrid system is called the photovoltaic solar-assisted heat-pump/heat-pipe (PV-SAHP/HP) system. To focus on both actual demand and energy savings, the PV-SAHP/HP system was designed to be capable of operating in three different modes, namely, the heat-pipe, solar-assisted heat pump, and air-source heat-pump modes. Based on solar radiation, the system operates in an optimal mode. A series of experiments were conducted in Hong Kong to study the performance of the system when operating in the heat-pipe and the solar-assisted heat-pump modes. Moreover, energy and exergy analyses were used to investigate the total PV/T performance of the system.

H.D. Fu; G. Pei; J. Ji; H. Long; T. Zhang; T.T. Chow

2012-01-01T23:59:59.000Z

166

Thermal and non-thermal energies in solar flares  

E-Print Network (OSTI)

The energy of the thermal flare plasma and the kinetic energy of the non-thermal electrons in 14 hard X-ray peaks from 9 medium-sized solar flares have been determined from RHESSI observations. The emissions have been carefully separated in the spectrum. The turnover or cutoff in the low-energy distribution of electrons has been studied by simulation and fitting, yielding a reliable lower limit to the non-thermal energy. It remains the largest contribution to the error budget. Other effects, such as albedo, non-uniform target ionization, hot target, and cross-sections on the spectrum have been studied. The errors of the thermal energy are about equally as large. They are due to the estimate of the flare volume, the assumption of the filling factor, and energy losses. Within a flare, the non-thermal/thermal ratio increases with accumulation time, as expected from loss of thermal energy due to radiative cooling or heat conduction. Our analysis suggests that the thermal and non-thermal energies are of the same magnitude. This surprising result may be interpreted by an efficient conversion of non-thermal energy to hot flare plasma.

Pascal Saint-Hilaire; Arnold O. Benz

2005-03-03T23:59:59.000Z

167

Solar Water Heating and Design Processes  

Science Journals Connector (OSTI)

Solar energy has been used to heat water for many years, and the design requirements of solar water heating equipment have been studied for ... because that upto this time other sources of energy have been more economical

H. P. Garg

1987-01-01T23:59:59.000Z

168

Performance analysis of wick-assisted heat pipe solar collector and comparison with experimental results  

Science Journals Connector (OSTI)

The performance of heat pipe solar collector is investigated theoretically and experimentally. The system employs wick-assisted heat pipe for the heat transfer from ... pipe temperature and also the thermal effic...

E. Azad

2009-03-01T23:59:59.000Z

169

High-Temperature Thermal Array for Next Generation Solar Thermal...  

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

Thermal Array for Next Generation Solar Thermal Power Production Award Number: DE-EE00025828 Report Date: March 15, 2013 PI: Stephen Obrey * Technical approach is focused on...

170

Solar Pool Heating | Open Energy Information  

Open Energy Info (EERE)

Retrieved from "http:en.openei.orgwindex.php?titleSolarPoolHeating&oldid267195" Category: Articles with outstanding TODO tasks...

171

Thermal effects testing at the National Solar Thermal Test Facility  

SciTech Connect

The National Solar Thermal Test Facility is operated by Sandia National Laboratories and located on Kirkland Air Force Base in Albuquerque, New Mexico. The permanent features of the facility include a heliostat field and associated receiver tower, two solar furnaces, two point-focus parabolic concentrators, and Engine Test Facility. The heliostat field contains 220 computer-controlled mirrors, which reflect concentrated solar energy to test stations on a 61-m tower. The field produces a peak flux density of 250 W/cm{sup 2} that is uniform over a 15-cm diameter with a total beam power of over 5 MW{sub t}. The solar beam has been used to simulate aerodynamic heating for several customers. Thermal nuclear blasts have also been simulated using a high-speed shutter in combination with heliostat control. The shutter can accommodate samples up to 1 m {times} 1 m and it has been used by several US and Canadian agencies. A glass-windowed wind tunnel is also available in the Solar Tower. It provides simultaneous exposure to the thermal flux and air flow. Each solar furnace at the facility includes a heliostat, an attenuator, and a parabolic concentrator. One solar furnace produces flux levels of 270 W/cm{sup 2} over and delivers a 6-mm diameter and total power of 16 kW{sub t}. A second furnace produces flux levels up to 1000 W/cm{sup 2} over a 4 cm diameter and total power of 60 kW{sub t}. Both furnaces include shutters and attenuators that can provide square or shaped pulses. The two 11 m diameter tracking parabolic point-focusing concentrators at the facility can each produce peak flux levels of 1500 W/cm{sup 2} over a 2.5 cm diameter and total power of 75 kW{sub t}. High-speed shutters have been used to produce square pulses.

Ralph, M.E.; Cameron, C.P. [Sandia National Labs., Albuquerque, NM (United States); Ghanbari, C.M. [Technadyne Engineering Consultants, Inc., Albuquerque, NM (United States)

1992-12-31T23:59:59.000Z

172

Thermal effects testing at the National Solar Thermal Test Facility  

SciTech Connect

The National Solar Thermal Test Facility is operated by Sandia National Laboratories and located on Kirkland Air Force Base in Albuquerque, New Mexico. The permanent features of the facility include a heliostat field and associated receiver tower, two solar furnaces, two point-focus parabolic concentrators, and Engine Test Facility. The heliostat field contains 220 computer-controlled mirrors, which reflect concentrated solar energy to test stations on a 61-m tower. The field produces a peak flux density of 250 W/cm[sup 2] that is uniform over a 15-cm diameter with a total beam power of over 5 MW[sub t]. The solar beam has been used to simulate aerodynamic heating for several customers. Thermal nuclear blasts have also been simulated using a high-speed shutter in combination with heliostat control. The shutter can accommodate samples up to 1 m [times] 1 m and it has been used by several US and Canadian agencies. A glass-windowed wind tunnel is also available in the Solar Tower. It provides simultaneous exposure to the thermal flux and air flow. Each solar furnace at the facility includes a heliostat, an attenuator, and a parabolic concentrator. One solar furnace produces flux levels of 270 W/cm[sup 2] over and delivers a 6-mm diameter and total power of 16 kW[sub t]. A second furnace produces flux levels up to 1000 W/cm[sup 2] over a 4 cm diameter and total power of 60 kW[sub t]. Both furnaces include shutters and attenuators that can provide square or shaped pulses. The two 11 m diameter tracking parabolic point-focusing concentrators at the facility can each produce peak flux levels of 1500 W/cm[sup 2] over a 2.5 cm diameter and total power of 75 kW[sub t]. High-speed shutters have been used to produce square pulses.

Ralph, M.E.; Cameron, C.P. (Sandia National Labs., Albuquerque, NM (United States)); Ghanbari, C.M. (Technadyne Engineering Consultants, Inc., Albuquerque, NM (United States))

1992-01-01T23:59:59.000Z

173

Practical Solar Thermal Chilled Water  

E-Print Network (OSTI)

the potential to impact America's use of non-renewable energy beyond its own design capacity by applying it to the optimization of an existing building's system. Solar-thermal chilling systems are not new. However, few of them can be described as a practical...

Leavell, B.

2010-01-01T23:59:59.000Z

174

Thermal and non-thermal energies in solar flares  

E-Print Network (OSTI)

The energy of the thermal flare plasma and the kinetic energy of the non-thermal electrons in 14 hard X-ray peaks from 9 medium-sized solar flares have been determined from RHESSI observations. The emissions have been carefully separated in the spectrum. The turnover or cutoff in the low-energy distribution of electrons has been studied by simulation and fitting, yielding a reliable lower limit to the non-thermal energy. It remains the largest contribution to the error budget. Other effects, such as albedo, non-uniform target ionization, hot target, and cross-sections on the spectrum have been studied. The errors of the thermal energy are about equally as large. They are due to the estimate of the flare volume, the assumption of the filling factor, and energy losses. Within a flare, the non-thermal/thermal ratio increases with accumulation time, as expected from loss of thermal energy due to radiative cooling or heat conduction. Our analysis suggests that the thermal and non-thermal energies are of the same m...

Saint-Hilaire, P; Saint-Hilaire, Pascal; Benz, Arnold O.

2005-01-01T23:59:59.000Z

175

Experiments on solar absorption using a greenhouse-effect gas in a thermal solar collector  

Science Journals Connector (OSTI)

This paper investigates an augmentation to the thermal solar absorption of solar collectors by introducing a greenhouse gas between the glazing and the absorber part of the solar collector. Experiments are designed and conducted to compare the effect of adding the gas on the efficiency of the collector without that addition. The maximum temperature rise of the absorber the time of heat retention before reaching room temperature and the energy conversion efficiency in heating up water for domestic use were all studied.

Abdul Hai M. B. Alami

2010-01-01T23:59:59.000Z

176

Solar Thermal Reactor Materials Characterization  

SciTech Connect

Current research into hydrogen production through high temperature metal oxide water splitting cycles has created a need for robust high temperature materials. Such cycles are further enhanced by the use of concentrated solar energy as a power source. However, samples subjected to concentrated solar radiation exhibited lifetimes much shorter than expected. Characterization of the power and flux distributions representative of the High Flux Solar Furnace(HFSF) at the National Renewable Energy Laboratory(NREL) were compared to ray trace modeling of the facility. In addition, samples of candidate reactor materials were thermally cycled at the HFSF and tensile failure testing was performed to quantify material degradation. Thermal cycling tests have been completed on super alloy Haynes 214 samples and results indicate that maximum temperature plays a significant role in reduction of strength. The number of cycles was too small to establish long term failure trends for this material due to the high ductility of the material.

Lichty, P. R.; Scott, A. M.; Perkins, C. M.; Bingham, C.; Weimer, A. W.

2008-03-01T23:59:59.000Z

177

Collector Field Maintenance: Distributed Solar Thermal Systems  

Science Journals Connector (OSTI)

This paper reports on recent operation and maintenance experiences with distributed solar thermal systems. Although some information on system-...

E. C. Boes; E. C. Cameron; E. L. Harley

1986-01-01T23:59:59.000Z

178

Solar-heated rotary kiln  

DOE Patents (OSTI)

A solar heated rotary kiln utilized for decomposition of materials, such as zinc sulfate is disclosed. The rotary kiln has an open end and is enclosed in a sealed container having a window positioned for directing solar energy into the open end of the kiln. The material to be decomposed is directed through the container into the kiln by a feed tube. The container is also provided with an outlet for exhaust gases and an outlet for spent solids, and rests on a tiltable base. The window may be cooled and kept clear of debris by coolant gases.

Shell, P.K.

1982-04-14T23:59:59.000Z

179

Thermoelectrics Combined with Solar Concentration for Electrical and Thermal Cogeneration  

E-Print Network (OSTI)

significant challenge for solar thermal energy generation issolar thermal, cogeneration of electrical and thermal energy,for efficient energy production. Solar thermal plants, such

Jackson, Philip Robert

2012-01-01T23:59:59.000Z

180

Definition: Passive solar heating | Open Energy Information  

Open Energy Info (EERE)

solar heating solar heating Jump to: navigation, search Dictionary.png Passive solar heating Using the sun's energy to heat a building; the windows, walls, and floors can be designed to collect, store, and distribute solar energy in the form of heat in the winter (and also to reject solar heat in the summer).[1] View on Wikipedia Wikipedia Definition Related Terms Daylighting, Passive Solar, heat, energy References ↑ http://www.energysavers.gov/your_home/designing_remodeling/index.cfm/mytopic=10250 Retrie LikeLike UnlikeLike You like this.Sign Up to see what your friends like. ved from "http://en.openei.org/w/index.php?title=Definition:Passive_solar_heating&oldid=480581" Category: Definitions What links here Related changes Special pages Printable version Permanent link

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


181

Concentrating Solar Power Thermal Storage System Basics | Department of  

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

Thermal Storage System Basics Thermal Storage System Basics Concentrating Solar Power Thermal Storage System Basics August 21, 2013 - 10:33am Addthis One challenge facing the widespread use of solar energy is reduced or curtailed energy production when the sun sets or is blocked by clouds. Thermal energy storage provides a workable solution to this challenge. In a concentrating solar power (CSP) system, the sun's rays are reflected onto a receiver, which creates heat that is used to generate electricity. If the receiver contains oil or molten salt as the heat-transfer medium, then the thermal energy can be stored for later use. This enables CSP systems to be cost-competitive options for providing clean, renewable energy. Several thermal energy storage technologies have been tested and

182

Sorption thermal storage for solar energy  

Science Journals Connector (OSTI)

Abstract Sorption technologies, which are considered mainly for solar cooling and heat pumping before, have gained a lot of interests for heat storage of solar energy in recent years, due to their high energy densities and long-term preservation ability for thermal energy. The aim of this review is to provide an insight into the basic knowledge and the current state of the art of research on sorption thermal storage technologies. The first section is concerned with the terminology and classification for sorption processes to give a clear scope of discussion in this paper. Sorption thermal storage is suggested to cover four technologies: liquid absorption, solid adsorption, chemical reaction and composite materials. Then the storage mechanisms and descriptions of basic closed and open cycles are given. The progress of sorption materials, cycles, and systems are also reviewed. Besides the well-known sorbents like silica gels and zeolites, some new materials, including aluminophosphates (AlPOs), silico-aluminophosphates (SAPOs) and metal-organic frameworks (MOFs), are proposed for heat storage. As energy density is a key criterion, emphais is given to the comparison of storage densities and charging tempertures for different materials. Ongoing research and development studies show that the challenges of the technology focus on the aspects of different types of sorption materials, the configurations of absorption cycles and advanced adsorption reactors. Booming progress illustrates that sorption thermal storage is a realistic and sustainable option for storing solar energy, especially for long-term applications. To bring the sorption storage solution into market, more intensive studies in fields of evaluation of advanced materials and development of efficient and compact prototypes are still required.

N. Yu; R.Z. Wang; L.W. Wang

2013-01-01T23:59:59.000Z

183

Solar heating and cooling diode module  

DOE Patents (OSTI)

A high efficiency solar heating system comprising a plurality of hollow modular units each for receiving a thermal storage mass, the units being arranged in stacked relation in the exterior frame of a building, each of the units including a port for filling the unit with the mass, a collector region and a storage region, each region having inner and outer walls, the outer wall of the collector region being oriented for exposure to sunlight for heating the thermal storage mass; the storage region having an opening therein and the collector region having a corresponding opening, the openings being joined for communicating the thermal storage mass between the storage and collector regions by thermosiphoning; the collector region being disposed substantially below and in parallel relation to the storage region in the modular unit; and the inner wall of the collector region of each successive modular unit in the stacked relation extending over the outer wall of the storage region of the next lower modular unit in the stacked relation for reducing heat loss from the system. Various modifications and alternatives are disclosed for both heating and cooling applications.

Maloney, Timothy J. (Winchester, VA)

1986-01-01T23:59:59.000Z

184

Residential building solar thermal analysis| A case study on Sophia Gordon Hall.  

E-Print Network (OSTI)

?? Solar thermal technologies, such as residential hot water heating and space conditioning, have potential for reducing green house gas emissions and fossil fuel consumption.… (more)

Trethewey, Ross M.

2010-01-01T23:59:59.000Z

185

Commercial Solar Thermal Incentive Program (Connecticut) | Department of  

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

Solar Thermal Incentive Program (Connecticut) Solar Thermal Incentive Program (Connecticut) Commercial Solar Thermal Incentive Program (Connecticut) < Back Eligibility Commercial Industrial Institutional Local Government Low-Income Residential Multi-Family Residential Nonprofit Schools Tribal Government Savings Category Heating & Cooling Solar Water Heating Maximum Rebate $150,000 Program Info Funding Source Public Benefits Fund Start Date 03/15/2013 State Connecticut Program Type State Grant Program Provider Clean Energy Finance and Investment Authority '''''Note: This program is not currently accepting applications. Check the program web site for information regarding future financing programs. ''''' The Clean Energy Finance and Investment Authority is offering grants and loans to non-residential entities for solar hot water installations. Only

186

Solar space heating | Open Energy Information  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Solar space heating (Redirected from - Solar Ventilation Preheat) Jump to: navigation, search (The following text is derived from the United States Department of Energy's description of solar space heating technology.)[1] Contents 1 Space Heating 2 Passive Solar Space Heating 3 Active Solar Space Heating 4 References Space Heating A solar space-heating system can consist of a passive system, an active system, or a combination of both. Passive systems are typically less costly and less complex than active systems. However, when retrofitting a building, active systems might be the only option for obtaining solar

187

Thermal characteristics of a classical solar telescope primary mirror  

E-Print Network (OSTI)

We present a detailed thermal and structural analysis of a 2m class solar telescope mirror which is subjected to a varying heat load at an observatory site. A 3-dimensional heat transfer model of the mirror takes into account the heating caused by a smooth and gradual increase of the solar flux during the day-time observations and cooling resulting from the exponentially decaying ambient temperature at night. The thermal and structural response of two competing materials for optical telescopes, namely Silicon Carbide -best known for excellent heat conductivity and Zerodur -preferred for its extremely low coefficient of thermal expansion, is investigated in detail. The insight gained from these simulations will provide a valuable input for devising an efficient and stable thermal control system for the primary mirror.

Banyal, Ravinder K

2011-01-01T23:59:59.000Z

188

High Temperature Thermal Array for Next Generation Solar Thermal...  

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

A 10% increase in shaft work is directly attributable to modified thermal heat capacity Engineering HTF Specific heat yields modified power output. 27 127 227 327 427 527...

189

Energy management in solar thermal power plants with double thermal storage system and subdivided solar field  

Science Journals Connector (OSTI)

In the paper, two systems for solar thermal power plants (STPPs) are devised for improving the overall performance of the plant. Each one attempts to reduce losses coming from two respective sources. The systems are simulated and compared to a reference STPP. They consists on: (a) a double thermal energy storage (DTS) with different functionalities for each storage and (b) the subdivision of the solar collector field (SSF) into specialised sectors, so that each sector is designed to meet a thermal requirement, usually through an intermediate heat exchanger. This subdivision reduces the losses in the solar field by means of a decrease of the temperature of the heat transfer fluid (HTF). Double thermal energy storage is intended for keeping the plant working at nominal level for many hours a day, including post-sunset hours. One of the storages gathers a fluid which is heated up to temperatures above the nominal one. In order to make it work, the solar field must be able to overheat the fluid at peak hours. The second storage is the classical one. The combination of both allows the manager of the plant to keep the nominal of the plant for longer periods than in the case of classical thermal energy storage. To the authors’ knowledge, it is the first time that both configurations are presented and simulated for the case of parabolic through STPP with HTF technology. The results show that, if compared to the reference STPP, both configurations may raise the annual electricity generation (up to 1.7% for the DTS case and 3.9% for the SSF case).

Antonio Rovira; María José Montes; Manuel Valdes; José María Martínez-Val

2011-01-01T23:59:59.000Z

190

Rechargeable Heat Battery's Secret Revealed: Solar Energy Capture in  

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

Rechargeable Heat Rechargeable Heat Battery Rechargeable Heat Battery's Secret Revealed Solar energy capture in chemical form makes it storable and transportable January 11, 2011 | Tags: Chemistry, Energy Technologies, Franklin Contact: John Hules, JAHules@lbl.gov, +1 510 486 6008 2011-01-11-Heat-Battery.jpg A molecule of fulvalene diruthenium, seen in diagram, changes its configuration when it absorbs heat, and later releases heat when it snaps back to its original shape. Image: Jeffrey Grossman Broadly speaking, there have been two approaches to capturing the sun's energy: photovoltaics, which turn the sunlight into electricity, or solar-thermal systems, which concentrate the sun's heat and use it to boil water to turn a turbine, or use the heat directly for hot water or home

191

Different Models for Determination of Thermal Stratification in A Solar Storage Tank  

Science Journals Connector (OSTI)

In this work two different models are shown for describing the thermal stratification in the solar storage tank of the solar water heating system. The first model was ... hour from the average hourly data of the

P. Géczy-Víg; I. Farkas

2009-01-01T23:59:59.000Z

192

Active Solar Heating and Cooling Systems Exemption  

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

Active solar heating and cooling systems may not be assessed at more than the value of a conventional system for property tax purposes. This law applies only to active solar systems and does not...

193

Thermoelectrics Combined with Solar Concentration for Electrical and Thermal Cogeneration  

E-Print Network (OSTI)

13 2.2.2. Solar Thermal Versus Photovoltaic ..…………..…………doi:10.1038/nmat2090. 17. Solar Thermal Technology on anFigure 2.5: An eSolar solar thermal system in Burbank,

Jackson, Philip Robert

2012-01-01T23:59:59.000Z

194

Determining window solar heat gain coefficient  

SciTech Connect

The solar heat gain characteristics of fenestration systems impact daytime building energy performance, occupant comfort and utility load demands. A measure of the fraction of available solar energy entering a building interior per unit window area is defined as the solar heat gain coefficient (SHGC). Together with a window's thermal transmittance (U-value), the SHGC is used to compare fenestration products, and it allows for the calculation of energy rating number and annual energy performance. The need to measure and compared advances in window technology has led to the development of experimental and analytical methods for the determination of SHGC performance. Several test facilities currently or previously capable of performing SHGC measurements exist worldwide. Results experimentally determined using these facilities have provided design data for handbook tables, and have been instrumental in the development and validation of predictive analytical methods and computer simulation tools. However, these facilities have operated without a standard test procedure for SHGC performance. Consequently, recent efforts have been focused on developing consensus test procedures for the evaluation of window energy performance.

Harrison, S.J.; Wonderen, S.J. van (Queen's Univ., Kingston, Ontario (Canada). Solar Calorimetry Lab.)

1994-08-01T23:59:59.000Z

195

Solar thermal organic rankine cycle for micro-generation  

Science Journals Connector (OSTI)

The conceptual design of an Organic Rankine Cycle (ORC) driven by solar thermal energy is developed for the decentralized production of electricity of up to 50 kW. Conventional Rankine Cycle uses water as the working fluid whereas ORC uses organic compound as the working fluid and it is particularly suitable for low temperature applications. The ORC and the solar collector will be sized according to the solar flux distribution in the Republic of Yemen for the required power output of 50 kW. This will be a micro power generation system that consists of two cycles the solar thermal cycle that harness solar energy and the power cycle which is the ORC that generates electricity. As for the solar thermal cycle heat transfer fluid (HTF) circulates the cycle while absorbing thermal energy from the sun through a parabolic trough collector and then storing it in a thermal storage to increase system efficiency and maintains system operation during low radiation. The heat is then transferred to the organic fluid in the ORC via a heat exchanger. The organic fluids to be used and analyzed in the ORC are hydrocarbons R600a and R290.

2012-01-01T23:59:59.000Z

196

Ausra Inc Formerly Solar Heat and Power Pty Ltd SHP | Open Energy  

Open Energy Info (EERE)

Inc Formerly Solar Heat and Power Pty Ltd SHP Inc Formerly Solar Heat and Power Pty Ltd SHP Jump to: navigation, search Name Ausra Inc (Formerly Solar Heat and Power Pty Ltd (SHP)) Place Palo Alto, California Zip 94303 Sector Solar Product US-based solar thermal electrical generation (STEG) company owned by AREVA Group. References Ausra Inc (Formerly Solar Heat and Power Pty Ltd (SHP))[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Ausra Inc (Formerly Solar Heat and Power Pty Ltd (SHP)) is a company located in Palo Alto, California . References ↑ "Ausra Inc (Formerly Solar Heat and Power Pty Ltd (SHP))" Retrieved from "http://en.openei.org/w/index.php?title=Ausra_Inc_Formerly_Solar_Heat_and_Power_Pty_Ltd_SHP&oldid=342438

197

Tracking heat flux sensors for concentrating solar applications  

DOE Patents (OSTI)

Innovative tracking heat flux sensors located at or near the solar collector's focus for centering the concentrated image on a receiver assembly. With flux sensors mounted near a receiver's aperture, the flux gradient near the focus of a dish or trough collector can be used to precisely position the focused solar flux on the receiver. The heat flux sensors comprise two closely-coupled thermocouple junctions with opposing electrical polarity that are separated by a thermal resistor. This arrangement creates an electrical signal proportional to heat flux intensity, and largely independent of temperature. The sensors are thermally grounded to allow a temperature difference to develop across the thermal resistor, and are cooled by a heat sink to maintain an acceptable operating temperature.

Andraka, Charles E; Diver, Jr., Richard B

2013-06-11T23:59:59.000Z

198

5 Cool Things about Solar Heating | Department of Energy  

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

5 Cool Things about Solar Heating 5 Cool Things about Solar Heating 5 Cool Things about Solar Heating March 26, 2013 - 3:08pm Addthis Solar heating systems can be a cost-effective way to heat your home. | Photo courtesy of Solar Design Associates, Inc. Solar heating systems can be a cost-effective way to heat your home. | Photo courtesy of Solar Design Associates, Inc. Erin Connealy Communications Specialist, Office of Energy Efficiency and Renewable Energy How can I participate? Read Energy Saver's article on solar heating systems to see whether see whether active solar heating is a good option for you. Most people are familiar with solar photovoltaic panels, but far fewer know about using solar as a source of heat in their homes. Active solar heating uses solar energy to heat fluid or air, which then transfers the solar heat

199

7-122 A solar pond power plant operates by absorbing heat from the hot region near the bottom, and rejecting waste heat to the cold region near the top. The maximum thermal efficiency that the power plant  

E-Print Network (OSTI)

calculated above. 7-123 A Carnot heat engine cycle is executed in a closed system with a fixed mass of steam can have is to be determined. Analysis The highest thermal efficiency a heat engine operating between transfer. Therefore, the maximum efficiency of the actual heat engine will be lower than the value

Bahrami, Majid

200

Bionics in textiles: flexible and translucent thermal insulations for solar thermal applications  

Science Journals Connector (OSTI)

...translucent thermal insulations for solar thermal applications Thomas Stegmaier...Denkendorf73770 Denkendorf, Germany Solar thermal collectors used at present consist...transparent thermal insulation|solar thermal collector| 1. Introduction...

2009-01-01T23:59:59.000Z

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


201

The Status of Solar Thermal Electric Technology  

Science Journals Connector (OSTI)

Solar thermal electric technology was evaluated as a future source of power for United States utilities. The technology status was developed using an ... configuration was selected for each of the major solar col...

Richard J. Holl; Edgar A. DeMeo

1990-01-01T23:59:59.000Z

202

Technical assessment of solar thermal energy storage technologies  

Science Journals Connector (OSTI)

Solar energy is recognized as one of the most promising alternative energy options. On sunny days, solar energy systems generally collect more energy than necessary for direct use. Therefore, the design and development of solar energy storage systems, is of vital importance and nowadays one of the greatest efforts in solar research. These systems, being part of a complete solar installation, provide an optimum tuning between heat demand and heat supply. This paper reviews the basic concepts, systems design, and the latest developments in (sensible and latent heat) thermal energy storage. Parameters influencing the storage system selection, the advantages and disadvantages of each system, and the problems encountered during the systems operation are highlighted.

Hassan E.S. Fath

1998-01-01T23:59:59.000Z

203

High-Temperature Thermal Array for Next Generation Solar Thermal...  

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

outstanding technical challenges focused on applicability to heat pipes to Concentrated Solar Power production. These include * Counter gravity physics * Counter gravity...

204

A solar concentrating photovoltaic/thermal collector .  

E-Print Network (OSTI)

??This thesis discusses aspects of a novel solar concentrating photovoltaic / thermal (PV/T) collector that has been designed to produce both electricity and hot water.… (more)

Coventry, Joseph S

2008-01-01T23:59:59.000Z

205

High-Temperature Thermal Array for Next Generation Solar Thermal...  

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

3 Q1 High-Temperature Thermal Array for Next Generation Solar Thermal Power Production - FY13 Q1 This document summarizes the progress of this Los Alamos National Laboratory...

206

A New Solar Carbon Capture Process: Solar Thermal Electrochemical Photo (STEP) Carbon Capture  

Science Journals Connector (OSTI)

A New Solar Carbon Capture Process: Solar Thermal Electrochemical Photo (STEP) Carbon Capture ... CO2 can be captured from 34% to over 50% solar energy efficiency (depending on the level of solar heat inclusion), as solid carbon and stored, or used as carbon monoxide to be available for a feedstock to synthesize (with STEP generated hydrogen) solar diesel fuel, synthetic jet fuel, or chemical production. ... STEP Iron, a Chemistry of Iron Formation without CO2 Emission: Molten Carbonate Solubility and Electrochemistry of Iron Ore Impurities ...

Stuart Licht; Baohui Wang; Susanta Ghosh; Hina Ayub; Dianlu Jiang; Jason Ganley

2010-07-14T23:59:59.000Z

207

Recycling of wasted energy : thermal to electrical energy conversion  

E-Print Network (OSTI)

heat source can be solar thermal energy, biological thermaland concentrated solar thermal energy farms. They demandsources include solar thermal energy, geo-thermal energy,

Lim, Hyuck

2011-01-01T23:59:59.000Z

208

Heat Transfer in Buildings: Application to Solar Air Collector and Trombe Wall Design  

E-Print Network (OSTI)

11 Heat Transfer in Buildings: Application to Solar Air Collector and Trombe Wall Design H. Boyer focuses on the modeling of Trombe solar walls. In each case, detailed modeling of heat transfer allows with same thermal behaviour). For heat conduction in walls, it results from electrical analogy

Paris-Sud XI, Université de

209

Thermal Energy Transport in the Solar Wind  

Science Journals Connector (OSTI)

This paper is intended to summarize the present status of measurements of heat flux in the solar wind and to provide a comparison of these measurements with the theory for collision-dominated heat transport in...

Michael D. Montgomery

1972-01-01T23:59:59.000Z

210

Definition: Solar Water Heating | Open Energy Information  

Open Energy Info (EERE)

Definition Definition Edit with form History Facebook icon Twitter icon » Definition: Solar Water Heating Jump to: navigation, search Dictionary.png Solar Water Heating A low-energy intensive system that uses solar rays to heat water. It is a viable option in developing countries[1] View on Wikipedia Wikipedia Definition Solar water heating (SWH) or solar hot water (SHW) systems comprise several innovations and many mature renewable energy technologies that have been well established for many years. SWH has been widely used in Australia, Austria, China, Cyprus, Greece, India, Israel, Japan and Turkey. In a "close-coupled" SWH system the storage tank is horizontally mounted immediately above the solar collectors on the roof. No pumping is required as the hot water naturally rises into the tank through thermosiphon flow.

211

Solar Energy as Heat Source  

Science Journals Connector (OSTI)

A monography on Distillation of water using solar energy was published [1]. A review was presented on the most important and recent studies on solar distillation [2]. Solar water desalination plants of the gre...

Prof. Dr. Anthony Delyannis; Dr. Euridike-Emmy Delyannis

1980-01-01T23:59:59.000Z

212

U.S. SOLAR ENERGY HEATS UP  

Science Journals Connector (OSTI)

U.S. SOLAR ENERGY HEATS UP ... The solar incentives now last for eight more years and allow businesses, residents, and utilities to deduct from their federal tax bills 30% of the cost of a solar energy system. ... Previously, utilities could not directly get the federal break, and benefits for home owners who wanted rooftop solar panels were capped at $2,000 for a system likely to cost $25,000 to $35,000. ...

JEFF JOHNSON

2008-10-20T23:59:59.000Z

213

Pv-Thermal Solar Power Assembly  

DOE Patents (OSTI)

A flexible solar power assembly includes a flexible photovoltaic device attached to a flexible thermal solar collector. The solar power assembly can be rolled up for transport and then unrolled for installation on a surface, such as the roof or side wall of a building or other structure, by use of adhesive and/or other types of fasteners.

Ansley, Jeffrey H. (El Cerrito, CA); Botkin, Jonathan D. (El Cerrito, CA); Dinwoodie, Thomas L. (Piedmont, CA)

2001-10-02T23:59:59.000Z

214

Thermal Management of Solar Cells  

E-Print Network (OSTI)

a better thermal conductance and when ceramic particles areor ceramic fillers that enhances thermal conductivity. Solid

Saadah, Mohammed Ahmed

2013-01-01T23:59:59.000Z

215

A NEW SOLAR THERMAL RECEIVER UTILIZING SMALL PARTICLES  

E-Print Network (OSTI)

iuision, Ext. 6782 A New Solar Thermal Receiver UtilizingI \\D \\. }J F--' A NEW SOLAR THERMAL RECEIVER UTILIZING SMALL94720 ABSTRACT A new type of solar thermal receiver is being

Hunt, Arlon J.

2011-01-01T23:59:59.000Z

216

Bazhou Deli Solar Energy Heating Co Ltd aka Deli Solar PRC | Open Energy  

Open Energy Info (EERE)

Bazhou Deli Solar Energy Heating Co Ltd aka Deli Solar PRC Bazhou Deli Solar Energy Heating Co Ltd aka Deli Solar PRC Jump to: navigation, search Name Bazhou Deli Solar Energy Heating Co Ltd (aka Deli Solar (PRC)) Place Beijing, Beijing Municipality, China Zip 65700 Sector Biomass, Solar Product Seller of solar thermal water heating systems, PV-powered lamps and small-scale biomass space heating devices. Coordinates 39.90601°, 116.387909° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":39.90601,"lon":116.387909,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

217

Lessons Learned: Devolping Thermochemical Cycles for Solar Heat...  

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

Lessons Learned: Devolping Thermochemical Cycles for Solar Heat Storage Applications Lessons Learned: Devolping Thermochemical Cycles for Solar Heat Storage Applications This...

218

Expansion and Improvement of Solar Water Heating Technology in...  

Open Energy Info (EERE)

Expansion and Improvement of Solar Water Heating Technology in China Project Management Office Jump to: navigation, search Name: Expansion and Improvement of Solar Water Heating...

219

Development of a Software Design Tool for Hybrid Solar-Geothermal Heat Pump  

Open Energy Info (EERE)

Software Design Tool for Hybrid Solar-Geothermal Heat Pump Software Design Tool for Hybrid Solar-Geothermal Heat Pump Systems in Heating- and Cooling-Dominated Buildings Geothermal Project Jump to: navigation, search Last modified on July 22, 2011. Project Title Development of a Software Design Tool for Hybrid Solar-Geothermal Heat Pump Systems in Heating- and Cooling-Dominated Buildings Project Type / Topic 1 Recovery Act - Geothermal Technologies Program: Ground Source Heat Pumps Project Type / Topic 2 Topic Area 2: Data Gathering and Analysis Project Description In heating-dominated buildings, the proposed design approach takes advantage of glazed solar collectors to effectively balance the annual thermal loads on the ground with renewable solar energy. In cooling-dominated climates, the design approach takes advantage of relatively low-cost, unglazed solar collectors as the heat rejecting component.

220

Sandia National Laboratories: Sandia-AREVA Commission Solar Thermal...  

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

ClimateECResearch & CapabilitiesCapabilitiesSandia-AREVA Commission Solar ThermalMolten Salt Energy-Storage Demonstration Sandia-AREVA Commission Solar ThermalMolten Salt...

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


221

The Solar Power Tower Jülich — A Solar Thermal Power Plant for Test and Demonstration of Air Receiver Technology  

Science Journals Connector (OSTI)

The open volumetric receiver technology allows the use of air as heat transfer medium at high temperatures in solar thermal power tower plants. It combines porous ceramic ... a strictly modular receiver design. H...

K. Hennecke; P. Schwarzbözl; G. Koll…

2009-01-01T23:59:59.000Z

222

Sandia National Laboratories: National Solar Thermal Test Facility  

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

Solar Power Technical Management Position On July 12, 2012, in Concentrating Solar Power, Energy, Facilities, Job Listing, National Solar Thermal Test Facility, News,...

223

Analysis of selected surface characteristics and latent heat storage for passive solar space heating  

SciTech Connect

Results are presented of an analysis of the value of various technical improvements in the solar collector and thermal storage subsystems of passive solar residential, agricultural, and industrial systems for two regions of the country. The evaluated improvements are: decreased emissivity and increased absorptivity of absorbing surfaces, decreased reflectivity, and decreased emissivity of glazing surface, and the substitution of sensible heat storage media with phase change materials. The value of each improvement is estimated by the additional energy savings resulting from the improvement.

Fthenakis, V.; Leigh, R.

1981-12-01T23:59:59.000Z

224

Solar powered heat pump construction. [silica gel adsorbent with solar regenerator  

SciTech Connect

Disclosed is a solar powered heat pump useful for both heating and cooling building space and for providing refrigeration. The device operates on a chemical effect (Adsorption) intermittent heat pump cycle in which the moderately high temperature heat generated by insolation is used to drive the desorber. The device has inherent thermal storage, can be factory built, sealed, and tested, can be electronically controlled for completely automatic operation, and includes a built-in back-up heater which obviates the need for installation of a separate back-up heating system. It can be manufactured from inexpensive materials such as glass, and implodes rather than explodes on failure. A preferred embodiment of the device is designed as a modular unit which can readily be combined with others of identical design to produce a solar powered battery panel for heating and cooling. This embodiment preferably comprises a tubular enclosure defining a pair of chambers separated by a valve. A first chamber is packed with silica gel (Or an equivalent adsorbent material) arranged such that mass and heat transfer through the gel take place rapidly and in comparable time periods. The first chamber is surrounded by a larger diameter, solar radiation transparent housing and the annular space between the chamber and housing is evacuated. The enclosure is mounted together with a diffuse light reflector which focuses sunlight toward the first chamber. Heat exchangers provide thermal communication between respective chambers and a pair of duct portions adapted for connection to a building heat distribution system.

Berg, C.A.

1980-11-04T23:59:59.000Z

225

Unglazed transpired solar collector having a low thermal-conductance absorber  

DOE Patents (OSTI)

An unglazed transpired solar collector using solar radiation to heat incoming air for distribution, comprises an unglazed absorber formed of low thermal-conductance material having a front surface for receiving the solar radiation and openings in the unglazed absorber for passage of the incoming air such that the incoming air is heated as it passes towards the front surface of the absorber and the heated air passes through the openings in the absorber for distribution. 3 figs.

Christensen, C.B.; Kutscher, C.F.; Gawlik, K.M.

1997-12-02T23:59:59.000Z

226

Unglazed transpired solar collector having a low thermal-conductance absorber  

DOE Patents (OSTI)

An unglazed transpired solar collector using solar radiation to heat incoming air for distribution, comprising an unglazed absorber formed of low thermal-conductance material having a front surface for receiving the solar radiation and openings in the unglazed absorber for passage of the incoming air such that the incoming air is heated as it passes towards the front surface of the absorber and the heated air passes through the openings in the absorber for distribution.

Christensen, Craig B. (Boulder, CO); Kutscher, Charles F. (Golden, CO); Gawlik, Keith M. (Boulder, CO)

1997-01-01T23:59:59.000Z

227

Thermostatically controlled solar heating and cooling system  

SciTech Connect

This patent describes a solar heating and cooling system for simultaneously heating or cooling an ambient air system within a building, heating a hot water supply for domestic use within the building and heating or cooling a swimming pool adjacent the building comprising a building. This comprises a swimming pool as a primary water source, a solar connector connected to the swimming pool, a heat pump for controlling ambient air temperature within the building, an energy conservation unit connected to the heat pump and to the hot water supply for utilizing hot gases from the heat pump to heat water in the hot water supply and an air heat exchanger connected to the air system and to the heat pump for selectively heating or cooling air in the building. Also a water heat exchanger is connected to a water source for selectively transferring heat between the heat pump and the water source, a well as a secondary water source connected to the water heat exchanger.

Yovanofski, T.

1986-12-16T23:59:59.000Z

228

Report on Solar Pool Heating Quantitative Survey  

SciTech Connect

This report details the results of a quantitative research study undertaken to better understand the marketplace for solar pool-heating systems from the perspective of residential pool owners.

Synapse Infusion Group, Inc. (Westlake Village, California)

1999-05-06T23:59:59.000Z

229

Solar Swimming Pool Heating in Pakistan  

Science Journals Connector (OSTI)

Hotels and swimming clubs in Pakistan pay huge gas bills for heating Swimming pools in winter. Winter days in most parts ... solar collectors may be used to extend the swimming season. Installing the pool in a wi...

Irshad Ahmad; Nasim A Khan

2009-01-01T23:59:59.000Z

230

Report on Solar Water Heating Quantitative Survey  

SciTech Connect

This report details the results of a quantitative research study undertaken to better understand the marketplace for solar water-heating systems from the perspective of home builders, architects, and home buyers.

Focus Marketing Services

1999-05-06T23:59:59.000Z

231

Molten Glass for Thermal Storage: Advanced Molten Glass for Heat Transfer and Thermal Energy Storage  

SciTech Connect

HEATS Project: Halotechnics is developing a high-temperature thermal energy storage system using a new thermal-storage and heat-transfer material: earth-abundant and low-melting-point molten glass. Heat storage materials are critical to the energy storage process. In solar thermal storage systems, heat can be stored in these materials during the day and released at night—when the sun is not out—to drive a turbine and produce electricity. In nuclear storage systems, heat can be stored in these materials at night and released to produce electricity during daytime peak-demand hours. Halotechnics new thermal storage material targets a price that is potentially cheaper than the molten salt used in most commercial solar thermal storage systems today. It is also extremely stable at temperatures up to 1200°C—hundreds of degrees hotter than the highest temperature molten salt can handle. Being able to function at high temperatures will significantly increase the efficiency of turning heat into electricity. Halotechnics is developing a scalable system to pump, heat, store, and discharge the molten glass. The company is leveraging technology used in the modern glass industry, which has decades of experience handling molten glass.

None

2012-01-01T23:59:59.000Z

232

Preliminary requirements for thermal storage subsystems in solar thermal applications  

SciTech Connect

Methodologies for the analysis of value and comparing thermal storage concepts are presented. Value is a measure of worth and is determined by the cost of conventional fuel systems. Value data for thermal storage in large solar thermal electric power applications are presented. Thermal storage concepts must be compared when all are performing the same mission. A method for doing that analysis, called the ranking index, is derived. Necessary data to use the methodology are included.

Copeland, R.J.

1980-04-01T23:59:59.000Z

233

Micro/Nano-Scale Phase Change Systems for Thermal Management and Solar Energy Conversion Applications  

E-Print Network (OSTI)

for Storage of Solar Thermal Energy,” Solar Energy, 18 (3),Toward Molecular Solar-Thermal Energy Storage,” Angewandtescale molecular solar thermal energy storage system, in

Coso, Dusan

2013-01-01T23:59:59.000Z

234

Micro/Nano-Scale Phase Change Systems for Thermal Management and Solar Energy Conversion Applications  

E-Print Network (OSTI)

S. a. , 2004, “Solar Thermal Collectors and Applications,”86] Schnatbaum L. , 2009, “Solar Thermal Power Plants,” Thefor Storage of Solar Thermal Energy,” Solar Energy, 18 (3),

Coso, Dusan

2013-01-01T23:59:59.000Z

235

Phase Change Materials for Thermal Energy Storage in Concentrated Solar Thermal Power Plants  

E-Print Network (OSTI)

COST REDUCTION STUDY FOR SOLAR THERMAL POWER PLANTS, Ottawa,Storage in Concentrated Solar Thermal Power Plants A ThesisStorage in Concentrated Solar Thermal Power Plants by Corey

Hardin, Corey Lee

2011-01-01T23:59:59.000Z

236

RADIATIVE HEATING OF THE SOLAR CORONA  

SciTech Connect

We investigate the effect of solar visible and infrared radiation on electrons in the Sun's atmosphere using a Monte Carlo simulation of the wave-particle interaction and conclude that sunlight provides at least 40% and possibly all of the power required to heat the corona, with the exception of dense magnetic flux loops. The simulation uses a radiation waveform comprising 100 frequency components spanning the solar blackbody spectrum. Coronal electrons are heated in a stochastic manner by low coherence solar electromagnetic radiation. The wave 'coherence time' and 'coherence volume' for each component is determined from optical theory. The low coherence of solar radiation allows moving electrons to gain energy from the chaotic wave field which imparts multiple random velocity 'kicks' to these particles causing their velocity distribution to broaden or heat. Monte Carlo simulations of broadband solar radiative heating on ensembles of 1000 electrons show heating at per particle levels of 4.0 x 10{sup -21} to 4.0 x 10{sup -20} W, as compared with non-loop radiative loss rates of {approx}1 x 10{sup -20} W per electron. Since radiative losses comprise nearly all of the power losses in the corona, sunlight alone can explain the elevated temperatures in this region. The volume electron heating rate is proportional to density, and protons are assumed to be heated either by plasma waves or through collisions with electrons.

Moran, Thomas G., E-mail: moran@grace.nascom.nasa.gov [Physics Department, Catholic University of America, 200 Hannan Hall, Washington, DC 20064 (United States) and NASA/GSFC, Code 671, Greenbelt, MD 20771 (United States)

2011-10-20T23:59:59.000Z

237

Solar Space Heating with Air and Liquid Systems  

Science Journals Connector (OSTI)

...several thousand solar space heating systems...can be supplied by solar energy delivered from flat-plate...liquid collection and storage systems, demand...Annual costs of solar heating equipment...current values of energy savings, but fuel...

1980-01-01T23:59:59.000Z

238

Evaluation of solar collectors for heat pump applications. Final report  

SciTech Connect

The study was initiated to evaluate the potential utility of very low cost (possibly unglazed and uninsulated) solar collectors to serve as both heat collection and rejection devices for a liquid source heat pump. The approach consisted of exercising a detailed analytical simulation of the complete heat pump/solar collector/storage system against heating and cooling loads derived for typical single-family residences in eight US cities. The performance of each system was measured against that of a conventional air-to-air heat pump operating against the same loads. In addition to evaluation of solar collector options, the study included consideration of water tanks and buried pipe grids to provide thermal storage. As a supplement to the analytical tasks, the study included an experimental determination of night sky temperature and convective heat transfer coefficients for surfaces with dimensions typical of solar collectors. The experiments were conducted in situ by placing the test apparatus on the roofs of houses in the Denver, Colorado, area. (MHR)

Not Available

1980-08-01T23:59:59.000Z

239

Encouraging Combined Heat and Power in California Buildings  

E-Print Network (OSTI)

photovoltaic solar thermal electric storage heat storageamount of PV, solar thermal, and electric storage needs toamount of PV, solar thermal, and electric storage needs to

Stadler, Michael

2014-01-01T23:59:59.000Z

240

Solar2 | Open Energy Information  

Open Energy Info (EERE)

Solar2 Jump to: navigation, search Name: Solar2 Place: Cuxhaven, Germany Zip: 27472 Sector: Solar Product: Sells and installs PV, solar thermal and wood pellet powered heating...

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


241

Low-cost distributed solar-thermal-electric power generation  

E-Print Network (OSTI)

Low-cost distributed solar-thermal-electric power generation A. Der Minassians, K. H. Aschenbach and feasibility study of a low-cost solar thermal electricity generation technology, suitable for distributed: Solar Thermal Collectors, Solar Thermal Electricity, Stirling Engine 1. INTRODUCTION In this paper, we

Sanders, Seth

242

Microgrids: An emerging paradigm for meeting building electricity and heat requirements efficiently and with appropriate energy quality  

E-Print Network (OSTI)

electric load thermal storage solar thermal storage chargingcombustion solar thermal CHP heat storage charging generateof solar thermal collectors, 1100 kWh of electrical storage,

Marnay, Chris; Firestone, Ryan

2007-01-01T23:59:59.000Z

243

Project Profile: Low-Cost Solar Thermal Collector | Department...  

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

Solar Thermal Collector Project Profile: Low-Cost Solar Thermal Collector SunTrough Energy logo SunTrough, under the Baseload CSP FOA, is developing a new class of solar...

244

Semi-transparent solar energy thermal storage device  

DOE Patents (OSTI)

A visually transmitting solar energy absorbing thermal storage module includes a thermal storage liquid containment chamber defined by an interior solar absorber panel, an exterior transparent panel having a heat mirror surface substantially covering the exterior surface thereof and associated top, bottom and side walls. Evaporation of the thermal storage liquid is controlled by a low vapor pressure liquid layer that floats on and seals the top surface of the liquid. Porous filter plugs are placed in filler holes of the module. An algicide and a chelating compound are added to the liquid to control biological and chemical activity while retaining visual clarity. A plurality of modules may be supported in stacked relation by a support frame to form a thermal storage wall structure.

McClelland, John F. (Ames, IA)

1986-04-08T23:59:59.000Z

245

Semi-transparent solar energy thermal storage device  

DOE Patents (OSTI)

A visually transmitting solar energy absorbing thermal storage module includes a thermal storage liquid containment chamber defined by an interior solar absorber panel, an exterior transparent panel having a heat mirror surface substantially covering the exterior surface thereof and associated top, bottom and side walls, Evaporation of the thermal storage liquid is controlled by a low vapor pressure liquid layer that floats on and seals the top surface of the liquid. Porous filter plugs are placed in filler holes of the module. An algicide and a chelating compound are added to the liquid to control biological and chemical activity while retaining visual clarity. A plurality of modules may be supported in stacked relation by a support frame to form a thermal storage wall structure.

McClelland, John F. (Ames, IA)

1985-06-18T23:59:59.000Z

246

Optical and Thermal Characterization of High Reflective Surface with Applications in Thermal-Solar Technology  

Science Journals Connector (OSTI)

Selective solar absorbing coating consists of a high thermal reflectance layer and high solar absorbance layer deposited over a substrate. In this work optical and thermal properties...

Macias, Juan Daniel; Ramirez Rincon, Jorge Andres; Lizama Tzec, Francisco Ivan; Ares Muzio, Oscar Eduardo; Oskam, Gerko; De Coss Gomez, Romeo; Alvarado Gil, Juan José

247

Optical and Thermal Characterization of High Reflection Surfaces with Applcations in Thermal-Solar Technology  

Science Journals Connector (OSTI)

Selective solar absorbing coating consists of a high thermal reflectance layer and a high solar absorbance layer deposited over a substrate. In this work optical and thermal properties...

Macias, Juan Daniel; Ramirez Rincon, Jorge Andres; Lizama Tzec, Francisco Ivan; Ares Muzio, Oscar Eduardo; Oskam, Gerko; De Coss Gomez, Romeo; Alvarado Gil, Juan José

248

Knox County Detention Facility Goes Solar for Heating Water | Department of  

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

Knox County Detention Facility Goes Solar for Heating Water Knox County Detention Facility Goes Solar for Heating Water Knox County Detention Facility Goes Solar for Heating Water August 16, 2010 - 12:30pm Addthis An array of solar collectors | Photo courtesy of Trane An array of solar collectors | Photo courtesy of Trane Maya Payne Smart Former Writer for Energy Empowers, EERE What are the key facts? Recovery Act grant funds solar farm to heat 14,000 gallons of water a day Estimated to save $60,000 a year 174 tons of CO2 emissions avoided annually Hot water demand soars at the six-building Knox County Detention Facility in Tennessee. It's open 24/7 with 1,036 inmate beds and 4,500 meals served daily-and don't forget the laundry. Naturally, county officials sought an alternative to costly water heating. Their solution: a $1.88 million solar thermal system, among

249

Research and Development for Novel Thermal Energy Storage Systems (TES) for Concentrating Solar Power (CSP)  

SciTech Connect

The overall objective was to develop innovative heat transfer devices and methodologies for novel thermal energy storage systems for concentrating solar power generation involving phase change materials (PCMs). Specific objectives included embedding thermosyphons and/or heat pipes (TS/HPs) within appropriate phase change materials to significantly reduce thermal resistances within the thermal energy storage system of a large-scale concentrating solar power plant and, in turn, improve performance of the plant. Experimental, system level and detailed comprehensive modeling approaches were taken to investigate the effect of adding TS/HPs on the performance of latent heat thermal energy storage (LHTES) systems.

Faghri, Amir; Bergman, Theodore L; Pitchumani, Ranga

2013-09-26T23:59:59.000Z

250

Thermal metastabilities in the solar core  

E-Print Network (OSTI)

Linear stability analysis indicates that solar core is thermally stable for infinitesimal internal perturbations. For the first time, thermal metastabilities are found in the solar core when outer perturbations with significant amplitude are present. The obtained results show that hot bubbles generated by outer perturbations may travel a significant distance in the body of the Sun. These deep-origin hot bubbles have mass, energy, and chemical composition that may be related to solar flares. The results obtained may have remarkable relations to activity cycles in planets like Jupiter and also in extrasolar planetary systems.

Attila Grandpierre; Gabor Agoston

2002-01-18T23:59:59.000Z

251

Thermal insulation with paper honeycombs with solar gain  

SciTech Connect

In this contribution the authors describe the concept and the model for the heat flux and the effective U-value of paper honeycombs (PHC) used as efficient and cheap transparent insulation material. With this thermal-insulation-material static U-values of U = 0.25 W/(m{sup 2}K) are obtained due to the very low thermal conduction value {lambda} = 0.04 W/(mK), which is comparable to thermal insulators as PU-foam or mineral wool. Contrary to conventional insulation materials PHC also gathers solar radiation due to its geometry, thereby providing heat flux into the interior of the building. Because the angle of incidence of the sun in wintertime is low, the direct solar radiation is absorbed approximately within the outermost 3 centimeters of the PHC. Even at ambient temperatures below 0 C, this region is warmed up to 60 C. By conduction the heat is brought to the brick wall underneath, which acts as reservoir and gets to temperatures between 15 and 30 C. Calculated across the full heating period, it is shown, that effective U values of 0.14 W/(m{sup 2}K) are reached by using PHC, reducing the brick wall U value by a factor of 3/4. Contrary to other transparent thermal insulation systems, e.g. developed by the Fraunhofer Institute for Solar Energy Systems, this system does not overheat during summertime, because the capillary structure is shielding the solar rays. A Windows based program solves the heat conduction equation with finite element methods.

Hingerl, K.; Baumgartner, G.; Aschauer, H.

1996-12-31T23:59:59.000Z

252

Thermal Management of Solar Cells  

E-Print Network (OSTI)

D. Mills, "Cooling of photovoltaic cells under concentratedelectric performance of a photovoltaic cells by cooling andSolar Cell A photovoltaic cell is a semiconductor that

Saadah, Mohammed Ahmed

2013-01-01T23:59:59.000Z

253

Sandia National Laboratories: solar thermal  

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

Plan Webinar Wednesday, Jan. 14 Sandian Presents on PV Failure Analysis at European PV Solar Energy Conference and Exhibition (EU PVSC) EC Top Publications Design and Analysis...

254

Thermal Management of Solar Cells.  

E-Print Network (OSTI)

??The focus on solar cells as a source of photovoltaic energy is rapidly increasing nowadays. The amount of sun's energy entering earth surface in one… (more)

Saadah, Mohammed Ahmed

2013-01-01T23:59:59.000Z

255

Utilizing Solar Thermal Energy in Textile Processing Units  

Science Journals Connector (OSTI)

This chapter presents the prospects of solar thermal energy utilization in the textile processing units in Pakistan. Various solar thermal technologies suitable for thermal energy production and their application...

Asad Mahmood; Khanji Harijan

2012-01-01T23:59:59.000Z

256

Enhancement of Heat Transfer in an Artificially Roughened Solar Air Heater  

E-Print Network (OSTI)

Abstract: solar air heater is one of the basic equipment through which solar energy is converted into thermal energy. Solar air heaters, because of their simple in design, are cheap and most widely used collection devices of solar energy. The thermal efficiency of a solar air heater is significantly low because of the low value of the convective heat transfer coefficient between the absorber plate and the air, leading to high absorber plate temperature and high heat losses to the surroundings. This paper presents the study of heat transfer in a solar air heater by using Computational Fluid Dynamics (CFD). The effect of Reynolds number on Nusselt number is investigated. A commercial finite volume package ANSYS FLUENT 12.1 is used to analyze and visualize the nature of the flow across the duct of a solar air heater.

unknown authors

257

Solar heating using the tide  

SciTech Connect

A fixed tank is disposed in the sea adjacent a floating solar still, with a flexible conduit extending between a lower portion of the tank and the interior of the still. A one-way check valve disposed in the lower portion of the tank permits sea water to enter the tank and fill it as the tide rises. As the tide lowers, water flows from the tank through a restriction in the conduit to the solar still.

Cardinal, D.E.

1980-04-08T23:59:59.000Z

258

A dynamic thermal performance model for flat-plate solar collectors based on the thermal inertia correction of the steady-state test method  

Science Journals Connector (OSTI)

Abstract In determining the dynamic thermal performance of a flat-plate solar collector, when the instantaneous solar irradiance changes sharply at one moment, most of the existing models cannot accurately predict the momentary thermal characteristics of outlet temperature and useful heat gain. In the present study, an analytical model in the form of series expansion is put forward to depict the momentary thermal characteristics of flat-plate solar collectors. The analytical model reveals that, instantaneous useful heat gain of a solar collector at one moment consists of the steady-state useful heat gain and corresponding thermal inertia correction. The model is then validated by the experimental data. It indicates that the analytical model can properly predict the dynamic thermal performance of the solar air collector. Besides, the model pertains to other types of solar thermal collectors, if they can be tested by the steady-state test method.

Jie Deng; Yupeng Xu; Xudong Yang

2015-01-01T23:59:59.000Z

259

Project Profile: High-Temperature Thermal Array for Next-Generation Solar Thermal Power Production  

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

The Los Alamos National Laboratory (ORNL), under the National Laboratory R&D competitive funding opportunity, is developing a megawatt-scale heat pipe–based technology designed to bridge the heliostat reflector field and the power cycle by replacing both the solar receiver and the heat transfer fluid (HTF) system used in concentrating solar power (CSP) systems. The technology, called the high-temperature thermal array, aims to achieve the SunShot Initiative's goals by addressing technical challenges, reducing capital and operating expenses, and increasing net photon-to-electricity conversion efficiency.

260

Green Energy Ohio - GEO Solar Thermal Rebate Program | Department of Energy  

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

Ohio - GEO Solar Thermal Rebate Program Ohio - GEO Solar Thermal Rebate Program Green Energy Ohio - GEO Solar Thermal Rebate Program < Back Eligibility Residential Savings Category Heating & Cooling Solar Water Heating Program Info Start Date 04/01/2009 State Ohio Program Type Non-Profit Rebate Program Provider Green Energy Ohio With funding from The Sierra Club, Green Energy Ohio (GEO) is offering rebates on residential properties in Ohio for solar water heating systems purchased after April 1, 2009. The rebates are based on the projected energy output from the solar collectors and are calculated at $30 per kBtu/day (based on SRCC rating for "Clear Day/C Interval"). The maximum amount is $2,400 per applicant. There are two parts to the application. PART I of the application collects

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


261

Solar-thermal reaction processing  

DOE Patents (OSTI)

In an embodiment, a method of conducting a high temperature chemical reaction that produces hydrogen or synthesis gas is described. The high temperature chemical reaction is conducted in a reactor having at least two reactor shells, including an inner shell and an outer shell. Heat absorbing particles are included in a gas stream flowing in the inner shell. The reactor is heated at least in part by a source of concentrated sunlight. The inner shell is heated by the concentrated sunlight. The inner shell re-radiates from the inner wall and heats the heat absorbing particles in the gas stream flowing through the inner shell, and heat transfers from the heat absorbing particles to the first gas stream, thereby heating the reactants in the gas stream to a sufficiently high temperature so that the first gas stream undergoes the desired reaction(s), thereby producing hydrogen or synthesis gas in the gas stream.

Weimer, Alan W; Dahl, Jaimee K; Lewandowski, Allan A; Bingham, Carl; Raska Buechler, Karen J; Grothe, Willy

2014-03-18T23:59:59.000Z

262

Siting Your Solar Water Heating System | Department of Energy  

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

Siting Your Solar Water Heating System Siting Your Solar Water Heating System Siting Your Solar Water Heating System May 30, 2012 - 2:46pm Addthis Solar water heaters should be placed facing due south. Solar water heaters should be placed facing due south. Before you buy and install a solar water heating system, you need to first consider your site's solar resource, as well as the optimal orientation and tilt of your solar collector. The efficiency and design of a solar water heating system depends on how much of the sun's energy reaches your building site. Solar water heating systems use both direct and diffuse solar radiation. Even if you don't live in a climate that's warm and sunny most of the time -- like the southwestern United States -- your site still might have an adequate solar resource. If your building site has unshaded areas and

263

Siting Your Solar Water Heating System | Department of Energy  

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

Siting Your Solar Water Heating System Siting Your Solar Water Heating System Siting Your Solar Water Heating System May 30, 2012 - 2:46pm Addthis Solar water heaters should be placed facing due south. Solar water heaters should be placed facing due south. Before you buy and install a solar water heating system, you need to first consider your site's solar resource, as well as the optimal orientation and tilt of your solar collector. The efficiency and design of a solar water heating system depends on how much of the sun's energy reaches your building site. Solar water heating systems use both direct and diffuse solar radiation. Even if you don't live in a climate that's warm and sunny most of the time -- like the southwestern United States -- your site still might have an adequate solar resource. If your building site has unshaded areas and

264

SOLAR ENERGY PROGRAM: CHAPTER FROM THE ENERGY AND ENVIRONMENT ANNUAL REPORT 1979  

E-Print Network (OSTI)

Hunt . . . Sensible Heat Storage for a Solar Thermal Powerthrough Solar Geothermal, Electric, and Storage Systems (A. Foss, "Sensible heat storage for a solar thermal power

Authors, Various

2010-01-01T23:59:59.000Z

265

OpenEI - solar thermal  

Open Energy Info (EERE)

Summary World Solar Summary World Solar Energy Data (from World on the Edge) http://en.openei.org/datasets/node/460 This dataset presents summary information related to world solar energy. It is part of a supporting dataset for the book World On the Edge: How to Prevent Environmental and Economic Collapse by Lester R.

License
266

Distributed Energy Resources On-Site Optimization for Commercial Buildings with Electric and Thermal Storage Technologies  

E-Print Network (OSTI)

and solar thermal collectors; electrical storage, flowis disallowed; 5. a low storage, PV, and solar thermal priceand heat storage; heat exchangers for application of solar

Stadler, Michael

2008-01-01T23:59:59.000Z

267

The Coupling Performance of a Solar-Air Heat Pump  

Science Journals Connector (OSTI)

Based on the advantages and disadvantages of single air source heat pump, single solar energy heat pump and switch solar-air dual heat source heat pumps, a new type of solar-air composite heat source heat pump system has been proposed to realize the utilization and complementary advantages of two renewable energy: air and solar. It also provided a feasible method to improve the city's ecological environment, and plays a leading role in the villages and small towns’ construction. Design the composite heat exchanger with double heat sources. The heat exchanger had dual function of tube-fin and tube heat exchangers, break through the traditional model that heat exchanger in working can realize heat exchange only between the same gases or liquid heat sources, and realized the heat exchange between two heat sources. It laid the technological and equips mental foundation for realizing the synchronization and composite using of solar energy and air.

Yin Liu; Jing Ma; Guanghui Zhou

2011-01-01T23:59:59.000Z

268

DOE Funds 15 New Projects to Develop Solar Power Storage and Heat Transfer  

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

Funds 15 New Projects to Develop Solar Power Storage and Heat Funds 15 New Projects to Develop Solar Power Storage and Heat Transfer Projects For Up to $67.6 Million DOE Funds 15 New Projects to Develop Solar Power Storage and Heat Transfer Projects For Up to $67.6 Million September 19, 2008 - 3:43pm Addthis WASHINGTON - U.S. Department of Energy (DOE) today announced selections for negotiations of award under the Funding Opportunity Announcement (FOA), Advanced Heat Transfer Fluids and Novel Thermal Storage Concepts for Concentrating Solar Power Generation. These 15 new projects, for up to approximately $67.6 million, will facilitate the development of lower-cost energy storage for concentrating solar power (CSP) technology. These projects support President Bush's Solar America Initiative, which aims to make solar energy cost-competitive with conventional forms of electricity

269

Exergetic optimization of solar collector and thermal energy storage system  

Science Journals Connector (OSTI)

This paper deals with the exergetic optimization of a solar thermal energy system. This consists of a solar collector (SC) and a rectangular water storage tank (ST) that contains a phase change material (PCM) distributed in an assembly of slabs. The study takes into account both conduction and convection heat transfer mode for water in the SC, and also the phase change process for the PCM in the ST. An analytical solution for the melting process in the PCM is also presented. The results of the study are compared with previous experimental data, confirming the accuracy of the model. Results of a numerical case study are presented and discussed.

F. Aghbalou; F. Badia; J. Illa

2006-01-01T23:59:59.000Z

270

Solar heating for indoor community swimming pool  

SciTech Connect

This project demonstrates the application of solar technology to an existing public indoor swimming pool. An application makes use of a new type of solar collector material called SolaRoll. The pool water is cycled through collectors made of the material mounted on the pool's dome roof, reducing reliance on natural gas and fuel oil. Approximately 60% of the energy to heat pool water will be provided. The specific objective of the project is to reduce reliance on natural gas and fuel oil consumption used to heat the community's pool and in so doing provide an example for residential applications.

Not Available

1984-01-01T23:59:59.000Z

271

An Analysis of Solar Thermal Technologies Integrated into a Canadian Office Building  

Science Journals Connector (OSTI)

Abstract This paper presents an analysis of three innovative solar heating and cooling systems integrated into a typical high performance office building in Montreal, Québec, Canada. A base case energy model of the office is first created in TRNSYS and used to determine the building thermal loads and the end use energy use distribution. This model then serves as the base for the analysis of several reference cases and innovative solar systems, including solar driven absorption chiller and heat pump designs. Results highlight the importance of operating the solar system in both heating and cooling modes. A combination of a GSHP with a solar driven chiller and direct solar heating was found to achieve the highest primary energy savings, with a 76% reduction relative to a standard reference system. The highest solar fractions were obtained for a solar driven absorption heat pump, with the system achieving an annual solar fraction of 0.31 while meeting nearly the entire heating load and a significant portion of the cooling load of a typical building floor through solar energy. It was concluded that the most practical application of solar energy for this building type and climate involved using solar energy to supplement a highly efficient base mechanical system such as a heat pump. Future work will examine additional climate regions and control strategies for system operations.

Justin Tamasauskas; Martin Kegel; Roberto Sunye

2014-01-01T23:59:59.000Z

272

Performance contracting for parabolic trough solar thermal systems  

SciTech Connect

Several applications of solar energy have proven viable in the energy marketplace, due to competitive technology and economic performance. One example is the parabolic trough solar collectors, which use focused solar energy to maximize efficiency and reduce material use in construction. Technical improvements are complemented by new business practices to make parabolic trough solar thermal systems technically and economically viable in an ever widening range of applications. Technical developments in materials and fabrication techniques reduce production cost and expand applications from swimming pool heating and service hot water, to higher-temperature applications such as absorption cooling and process steam. Simultaneously, new financing mechanisms such as a recently awarded US Department of Energy (DOE) Federal Energy Management Program (FEMP) indefinite quantity Energy Savings Performance Contract (Super ESPC) facilitate and streamline implementation of the technology in federal facilities such as prisons and military bases.

Brown, H.; Hewett, R.; Walker, A. [National Renewable Energy Lab., Golden, CO (United States); Gee, R.; May, K. [Industrial Solar Technology, Golden, CO (United States)

1997-12-31T23:59:59.000Z

273

Solar thermal electric power information user study  

SciTech Connect

The results of a series of telephone interviews with groups of users of information on solar thermal electric power are described. These results, part of a larger study on many different solar technologies, identify types of information each group needed and the best ways to get information to each group. The report is 1 of 10 discussing study results. The overall study provides baseline data about information needs in the solar community. An earlier study identified the information user groups in the solar community and the priority (to accelerate solar energy commercialization) of getting information to each group. In the current study only high-priority groups were examined. Results from five solar thermal electric power groups of respondents are analyzed: DOE-Funded Researchers, Non-DOE-Funded Researchers, Representatives of Utilities, Electric Power Engineers, and Educators. The data will be used as input to the determination of information products and services the Solar Energy Research Institute, the Solar Energy Information Data Bank Network, and the entire information outreach community should be preparing and disseminating.

Belew, W.W.; Wood, B.L.; Marle, T.L.; Reinhardt, C.L.

1981-02-01T23:59:59.000Z

274

A large solar/heat?driven thermoacoustic cooler  

Science Journals Connector (OSTI)

Based on the success of an earlier solar?powered thermoacoustics prime mover which used a direct?illumination stack and no hot?side heat exchanger [Chen and Garrett Proc. 16th Int. Cong. Acoust. Vol. II 813–814 (1998)] a large solar/heat?driven thermoacoustic cooler was designed and fabricated. Target cooling powers of 10 to 60 W over a 25?deg temperature span were based on a thermal input power of 150 to 600 W. To concentrate the required amount of solar power on an 11?cm?diameter ceramic stack a 10?ft diameter fiberglass parabolic dish used for satellite TV has been converted by gluing aluminized MylarTM on its surface over a 2?m diameter. A two?axis coordinated solar tracking system driven by two computer?controlled motors has produced the required 600 W of solar power to illuminate the hot side of the stack for a maximum of 3 h. Measured performance of the solar refrigerator will be compared to DE L T AE models. [Work supported by the Office of Naval Research.

2000-01-01T23:59:59.000Z

275

Solar Thermal/PV | OpenEI  

Open Energy Info (EERE)

Thermal/PV Thermal/PV Dataset Summary Description Provides annual consumption (in quadrillion Btu) of renewable energy by energy use sector (residential, commercial, industrial, transportation and electricity) and by energy source (e.g. solar, biofuel) for 2004 through 2008. Original sources for data are cited on spreadsheet. Also available from: www.eia.gov/cneaf/solar.renewables/page/trends/table1_2.xls Source EIA Date Released August 01st, 2010 (4 years ago) Date Updated Unknown Keywords annual energy consumption biodiesel Biofuels biomass energy use by sector ethanol geothermal Hydroelectric Conventional Landfill Gas MSW Biogenic Other Biomass renewable energy Solar Thermal/PV Waste wind Wood and Derived Fuels Data application/vnd.ms-excel icon RE Consumption by Energy Use Sector, Excel file (xls, 32.8 KiB)

276

Solar heat storages in district heating Klaus Ellehauge Thomas Engberg Pedersen  

E-Print Network (OSTI)

July 2007 . #12;#12;Solar heat storages in district heating networks July 2007 Klaus Ellehauge 97 22 11 tep@cowi.dk www.cowi.com #12;#12;Solar heat storages in district heating networks 5 in soil 28 5.3 Other experienced constructions: 30 6 Consequences of establishing solar heat in CHP areas

277

Sandia National Laboratories: National Solar Thermal Test Facility  

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

Center in Vermont Achieves Milestone Installation On September 23, 2014, in Concentrating Solar Power, Energy, Facilities, National Solar Thermal Test Facility, News, News &...

278

Thermoelectrics Combined with Solar Concentration for Electrical and Thermal Cogeneration  

E-Print Network (OSTI)

for efficient energy production. Solar thermal plants, suchenergy production. It would require a substantial amount of land usage to install enough solar

Jackson, Philip Robert

2012-01-01T23:59:59.000Z

279

Sandia National Laboratories: National Solar Thermal Test Facility  

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

Visit to NSTTF On September 10, 2012, in Concentrating Solar Power, EC, National Solar Thermal Test Facility, Renewable Energy Dr. David Danielson visited Sandia National...

280

Sandia National Laboratories: National Solar Thermal Test Facility  

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

Test Facility Air Force Research Laboratory Testing On August 17, 2012, in Concentrating Solar Power, Energy, Facilities, National Solar Thermal Test Facility, News, Renewable...

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


281

Sandia National Laboratories: National Solar Thermal Test Facility  

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

Sandia Wins Three R&D100 Awards On July 24, 2013, in Concentrating Solar Power, Energy, Facilities, National Solar Thermal Test Facility, News, News & Events, Photovoltaic,...

282

Sandia National Laboratories: National Solar Thermal Test Facility  

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

Funding Award On June 4, 2014, in Advanced Materials Laboratory, Concentrating Solar Power, Energy, Energy Storage, Facilities, National Solar Thermal Test Facility,...

283

Sandia National Laboratories: National Solar Thermal Test Facility  

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

Better Sandia Capabilities to Support Power Industry On January 8, 2013, in Concentrating Solar Power, Energy, Energy Storage, Facilities, National Solar Thermal Test Facility,...

284

Optics and Photonics in Solar Thermal Energy Technologies  

Science Journals Connector (OSTI)

The complex optical diagnostics employed in the development and application of solar thermal and wind energy technologies are reviewed, with application in particle receivers, solar...

Nathan, G J 'Gus'; Alwahabi, Zeyad; Dally, Bassam B; Medwell, Paul R; Arjomandi, Maziar; Sun, Zhiwei; Lau, Timothy C; van Eyk, Philip

285

Thermal layering: a passive solar design strategy  

SciTech Connect

SOLARGREEN was the author's entry into the US Department of Housing and Urban Development's Passive Solar Residential Design Competition. The objective of the design was to develop a low-cost, innovative passive solar heating and cooling system as part of a marketable, aesthetically pleasing dwelling that could be easily constructed using existing building practices. The basic design is a three-bedroom, two-story, 1600 square foot home with a solarium that serves as both a solar collector and a food-producing greenhouse. The entry received a design award and five construction awards in the competition.

Moore, F.

1980-01-01T23:59:59.000Z

286

Rechargeable Heat Battery's Secret Revealed: Solar Energy Capture...  

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

Rechargeable Heat Battery Rechargeable Heat Battery's Secret Revealed Solar energy capture in chemical form makes it storable and transportable January 11, 2011 | Tags: Chemistry,...

287

Effect of nanofluids on thermal performance of heat pipes.  

E-Print Network (OSTI)

?? A relatively new way for utilizing the thermal performance of heat pipes is to use nanofluids as working fluids in the heat pipes. Heat… (more)

Ferizaj, Drilon

2014-01-01T23:59:59.000Z

288

Everything You Wanted to Know About Solar Water Heating Systems...  

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

Everything You Wanted to Know About Solar Water Heating Systems Everything You Wanted to Know About Solar Water Heating Systems October 7, 2014 - 2:39pm Q&A What do you want to...

289

Wave Heating of the Solar Atmosphere  

E-Print Network (OSTI)

Magnetic waves are a relevant component in the dynamics of the solar atmosphere. Their significance has increased because of their potential as a remote diagnostic tool and their presumed contribution to plasma heating processes. We discuss our current understanding on coronal heating by magnetic waves, based on recent observational evidence and theoretical advances. The discussion starts with a selection of observational discoveries that have brought magnetic waves to the forefront of the coronal heating discussion. Then, our theoretical understanding on the nature and properties of the observed waves and the physical processes that have been proposed to explain observations are described. Particular attention is given to the sequence of processes that link observed wave characteristics with concealed energy transport, dissipation, and heat conversion. We conclude with a commentary on how the combination of theory and observations should help us understanding and quantifying magnetic wave heating of the sola...

Arregui, I

2015-01-01T23:59:59.000Z

290

A two dimensional thermal network model for a photovoltaic solar wall  

SciTech Connect

A two dimensional thermal network model is proposed to predict the temperature distribution for a section of photovoltaic solar wall installed in an outdoor room laboratory in Concordia University, Montreal, Canada. The photovoltaic solar wall is constructed with a pair of glass coated photovoltaic modules and a polystyrene filled plywood board as back panel. The active solar ventilation through a photovoltaic solar wall is achieved with an exhaust fan fixed in the outdoor room laboratory. The steady state thermal network nodal equations are developed for conjugate heat exchange and heat transport for a section of a photovoltaic solar wall. The matrix solution procedure is adopted for formulation of conductance and heat source matrices for obtaining numerical solution of one dimensional heat conduction and heat transport equations by performing two dimensional thermal network analyses. The temperature distribution is predicted by the model with measurement data obtained from the section of a photovoltaic solar wall. The effect of conduction heat flow and multi-node radiation heat exchange between composite surfaces is useful for predicting a ventilation rate through a solar ventilation system. (author)

Dehra, Himanshu [1-140 Avenue Windsor, Lachine, Quebec (Canada)

2009-11-15T23:59:59.000Z

291

Survey of hybrid solar heat pump drying systems  

Science Journals Connector (OSTI)

Solar drying is in practice since the ancient time for preservation of food and agriculture crops. The objective of most drying processes is to reduce the moisture content of the product to a specified value. Solar dryers used in agriculture for food ... Keywords: coefficient of performance (COP), direct expansion SAHD, drying chamber, heat pump, solar assisted heat pumps dryer (SAHPD), solar fraction

R. Daghigh; K. Sopian; M. H. Ruslan; M. A. Alghoul; C. H. Lim; S. Mat; B. Ali; M. Yahya; A. Zaharim; M. Y. Sulaiman

2009-02-01T23:59:59.000Z

292

Tuning energy transport in solar thermal systems using nanostructured materials  

E-Print Network (OSTI)

Solar thermal energy conversion can harness the entire solar spectrum and theoretically achieve very high efficiencies while interfacing with thermal storage or back-up systems for dispatchable power generation. Nanostructured ...

Lenert, Andrej

2014-01-01T23:59:59.000Z

293

Review of solar assisted heat pump drying systems for agricultural and marine products  

Science Journals Connector (OSTI)

Combining solar energy and heat pump technology is a very attractive concept. It is able to eliminate some difficulties and disadvantages of using solar dryer systems or solely using heat pump drying separately. Solar assisted heat pump drying systems have been studied and applied since the last decades in order to increase the quality of products where low temperature and well-controlled drying conditions are needed. This paper reviewed studies on the advances in solar heat pump drying systems. Results and observation from the studies of solar assisted heat pump dryer systems indicated that for heat sensitive materials; improved quality control, reduced energy consumption, high coefficient of performance and high thermal efficiency of the dryer were achieved. The way forward and future directions in R&D in this field are further research regarding theoretical and experimental analysis as well as for the replacement of conventional solar dryer or heat pump dryer with solar assisted heat pump drying systems and solar assisted chemical and ground source heat pump dryers which should present energy efficient applications of the technologies.

Ronak Daghigh; Mohd Hafidz Ruslan; Mohamad Yusof Sulaiman; Kamaruzzaman Sopian

2010-01-01T23:59:59.000Z

294

Solar wind electron temperature and density measurements on the Solar Orbiter with thermal noise spectroscopy  

E-Print Network (OSTI)

Solar wind electron temperature and density measurements on the Solar Orbiter with thermal noise of the plasma thermal noise analysis for the Solar Orbiter, in order to get accurate measurements of the total of their small mass and therefore large thermal speed, the solar wind electrons are expected to play a major role

California at Berkeley, University of

295

Heat extraction from a large solar pond  

SciTech Connect

The largest operational, salt-gradient solar pond in the United States, occupying 2000 m/sup 2/, was constructed during 1978 in Miamisburg, Ohio. The heat from this solar pond, nearly 1055 GJ/y (1000 million Btu/y) is used to heat an outdoor swimming pool in the summer and an adjacent recreation building during part of the winter. A new heat exchanger system has been installed externally to the pond and operated successfully to deliver 391 GJ (371 million Btu) of heat during May-June. Hot brine water is drawn through a diffuser by a self-priming pump fabricated from fiberglass reinforced plastic. The brine water passes through copper-10% nickel tubes of a tube-and-shell heat exchanger and is then returned to the bottom of the pond. Cooling water from the swimming pool circulates through the shell side of the heat exchanger. Several designs and flow velocities of the brine inlet and outlet diffusers into the pond have been tested in order to minimize the effect of turbulence upon the salt gradient zone.

Wittenberg, L.J.; Etter, D.E.

1982-08-01T23:59:59.000Z

296

10 MWe Solar Thermal Central Receiver Pilot Plant — Heliostat Evaluation  

Science Journals Connector (OSTI)

Sandia is responsible for evaluating the heliostats at the 10 MWe Solar Thermal Central Receiver Pilot Plant in Barstow, California...

C. L. Mavis; J. J. Bartel

1986-01-01T23:59:59.000Z

297

Lakeland Electric - Solar Water Heating Program | Department of Energy  

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

Lakeland Electric - Solar Water Heating Program Lakeland Electric - Solar Water Heating Program Lakeland Electric - Solar Water Heating Program < Back Eligibility Residential Savings Category Heating & Cooling Solar Water Heating Program Info Start Date June 2010 State Florida Program Type Other Incentive Provider Lakeland Electric Lakeland Electric, a municipal utility in Florida, is the nation's first utility to offer solar-heated domestic hot water on a "pay-for-energy" basis. The utility has contracted with a solar equipment vendor, Regenesis Lakeland, LLC, to install solar water heaters on participating customers' homes. Lakeland Electric bills the customer $34.95 per month regardless of use. Each solar heater is metered and equipped with a heating element timer as a demand management feature. The $34.95 monthly charge is a bulk energy

298

Experimental Research on Solar Assisted Heat Pump Heating System with Latent Heat Storage  

E-Print Network (OSTI)

-reaching meaning of solving energy and environment problems if new type energy conservation and environment protection heating system ? solar assisted ground-source heat pump (SAGHP) heating system with a latent heat storage tank will be practical... was established at the laboratory of construction energy conservation in Harbin Institute of Technology (HIT) in 2004. It added a latent heat storage tank in original SAGHP system. The schematic diagram of the system is shown in Figure 1. The experimental...

Han, Z.; Zheng, M.; Liu, W.; Wang, F.

2006-01-01T23:59:59.000Z

299

City of Tallahassee Utilities - Solar Water Heating Rebate | Department of  

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

Tallahassee Utilities - Solar Water Heating Rebate Tallahassee Utilities - Solar Water Heating Rebate City of Tallahassee Utilities - Solar Water Heating Rebate < Back Eligibility Installer/Contractor Residential Savings Category Heating & Cooling Solar Water Heating Program Info State Florida Program Type Utility Rebate Program Rebate Amount 450 Provider City of Tallahassee Utilities The City of Tallahassee Utilities offers a $450 rebate to homeowners* and homebuilders who install a solar water-heating system. This rebate may be applied to a first-time installation or to the replacement of an older solar water-heating system. Homebuilders may also apply for the rebate when installing a solar water heater on a new home. Pool heating systems are not eligible for the rebate. The homeowner must allow the City of Tallahassee to conduct an energy audit

300

Pressure drops for direct steam generation in line-focus solar thermal systems  

E-Print Network (OSTI)

the focus of the solar collector, and then generate steam outside the collector in a large heat exchanger applicable to DSG in long horizontal pipes as required for the current work with a line-focus collector. #12Pressure drops for direct steam generation in line-focus solar thermal systems John Pye1 , Graham

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


301

Biomass Gasification using Solar Thermal Energy M. Munzinger and K. Lovegrove  

E-Print Network (OSTI)

.lovegrove@anu.edu.au Hydrogen from Biomass as an energy carrier has generated increasing interest in recent years in connection with the use of solar heat as energy source for the conversion reaction. Biomass gasification effective as high energy density transport fuels. Gas derived from solar thermal conversion of biomass

302

Solar heating and hot water system installed at St. Louis, Missouri. Final report  

SciTech Connect

Information is provided on the solar heating and hot water system installed at the William Tao and Associates, Inc., office building in St. Louis, Missouri. The information consists of description, photos, maintenance and construction problems, final drawing, system requirements and manufacturer's component data. The solar system was designed to provide 50% of the hot water requirements and 45% of the space heating needs for a 900 square foot office space and drafting room. The solar facility has 252 square foot of glass tube concentrator collectors and a 1000 gallon steel storage tank buried below a concrete slab floor. Freeze protection is provided by a propylene glycol/water mixture in the collector loop. The collectors are roof mounted on a variable tilt array which is adjusted seasonally and is connected to the solar thermal storage tank by a tube-in-shell heat exchanger. Incoming city water is preheated through the solar energy thermal storage tank.

Not Available

1980-04-01T23:59:59.000Z

303

Flexible thermal cycle test equipment for concentrator solar cells  

DOE Patents (OSTI)

A system and method for performing thermal stress testing of photovoltaic solar cells is presented. The system and method allows rapid testing of photovoltaic solar cells under controllable thermal conditions. The system and method presents a means of rapidly applying thermal stresses to one or more photovoltaic solar cells in a consistent and repeatable manner.

Hebert, Peter H. (Glendale, CA); Brandt, Randolph J. (Palmdale, CA)

2012-06-19T23:59:59.000Z

304

A solar concentrating photovoltaic / thermal collector J.S. Coventry  

E-Print Network (OSTI)

A solar concentrating photovoltaic / thermal collector J.S. Coventry Centre for Sustainable Energy solar concentrating photovoltaic / thermal collector Coventry "Photovoltaic and Wind Power for Urban of both photovoltaic and solar thermal power generation. Some of the recent projects in Australia

305

Baoding Solar Thermal Equipment Company | Open Energy Information  

Open Energy Info (EERE)

Equipment Company Equipment Company Jump to: navigation, search Name Baoding Solar Thermal Equipment Company Place Baoding, Hebei Province, China Sector Solar Product Solar water heating system manufacturer. Coordinates 38.855011°, 115.480217° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":38.855011,"lon":115.480217,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

306

Conceptual design selection and development of a latent-heat thermal-energy-storage subsystem for a saturated-steam solar receiver and load  

SciTech Connect

The following latent heat storage concepts are described and evaluated in comparison with each other and with an oil/rock sensible heat storage system: (1) passive tube intensive (shell-and-tube heat exchanger) with and without heat transfer enhanced by fins; (2) phase change material cans (or chubbs) with a biphenyl intermediate heat transfer fluid; (3) phase change material macroencapsulation in a containment tank full of tubes; (4) microencapsulation in a porous carrier; (5) direct contact heat exchange; and (6) systems using mechanical scrapers for removing solidified phase change material from container surfaces. A tube intensive system with heat transfer enhancement was selected, and the conceptual design and cost/performance estimates are given for it. A commercial scale unit is assessed, and design changes and corresponding costs are presented that would be required to make the system meet changed requirements. (LEW)

Not Available

1981-02-01T23:59:59.000Z

307

Sandia National Laboratories: National Solar Thermal Test Facility  

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

ECISEnergyRenewable EnergySolar EnergyConcentrating Solar Power ECISEnergyRenewable EnergySolar EnergyConcentrating Solar Power (CSP)National Solar Thermal Test Facility National Solar Thermal Test Facility NSTTF Interactive Tour National Solar Thermal Test Facility (NSTTF) Operated by Sandia National Laboratories for the U.S. Department of Energy (DOE), the National Solar Thermal Test Facility (NSTTF) is the only test facility of this type in the United States. The NSTTF's primary goal is to provide experimental engineering data for the design, construction, and operation of unique components and systems in proposed solar thermal electrical plants planned for large-scale power generation. In addition, the site was built and instrumented to provide test facilities for a variety of solar and nonsolar applications. The facility can provide

308

Residential Solar Water Heating Rebates | Department of Energy  

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

Residential Solar Water Heating Rebates Residential Solar Water Heating Rebates Residential Solar Water Heating Rebates < Back Eligibility Residential Savings Category Heating & Cooling Commercial Heating & Cooling Solar Heating Water Heating Maximum Rebate $1,900 Program Info Funding Source New Hampshire Renewable Energy Fund (REF) Start Date 04/21/2010 Expiration Date When funding is exhausted State New Hampshire Program Type State Rebate Program Rebate Amount $1,500, $1,700 or $1,900, depending on annual estimated system output Provider New Hampshire Public Utilities Commission New Hampshire offers a rebate for residential solar water-heating systems and solar space-heating systems. The rebate is equal to $1,500 for systems with an annual estimated output of 5.5 MMBTU to 19.9 MMBTU; $1,700 for

309

SolarOil Project, Phase I preliminary design report. [Solar Thermal Enhanced Oil Recovery project  

SciTech Connect

The preliminary design of the Solar Thermal Enhanced Oil Recovery (SolarOil) Plant is described in this document. This plant is designed to demonstrate that using solar thermal energy is technically feasible and economically viable in enhanced oil recovery (EOR). The SolarOil Plant uses the fixed mirror solar concentrator (FMSC) to heat high thermal capacity oil (MCS-2046) to 322/sup 0/C (611/sup 0/F). The hot fluid is pumped from a hot oil storage tank (20 min capacity) through a once-through steam generator which produces 4.8 MPa (700 psi) steam at 80% quality. The plant net output, averaged over 24 hr/day for 365 days/yr, is equivalent to that of a 2.4 MW (8.33 x 10/sup 6/ Btu/hr) oil-fired steam generator having an 86% availability. The net plant efficiency is 57.3% at equinox noon, a 30%/yr average. The plant will be demonstrated at an oilfield site near Oildale, California.

Baccaglini, G.; Bass, J.; Neill, J.; Nicolayeff, V.; Openshaw, F.

1980-03-01T23:59:59.000Z

310

Performance investigation of a solar heating system with underground seasonal energy storage for greenhouse application  

Science Journals Connector (OSTI)

Abstract This study reports the performance of a demonstrated 2304 m2 solar-heated greenhouse equipped with a seasonal thermal energy storage system in Shanghai, east China. This energy storage system utilises 4970 m3 of underground soil to store the heat captured by a 500 m2 solar collector in non-heating seasons through U-tube heat exchangers. During heating seasons, thermal energy is delivered by the heat exchange tubes placed on the plants shelves and the bare soil. The system can operate without a heat pump, which can save electricity consumption and further enhance the solar fraction. It was found that in the first operation year, 331.9 GJ was charged, and 208.9 GJ was later extracted for greenhouse space heating. No auxiliary heating equipment was installed so that solar energy covered all the heating loads directly or indirectly. It was demonstrated that this system was capable of maintaining an interior air temperature that was 13 °C higher than the ambient value when the latter temperature was ?2 °C at night. The ECOP (electrical coefficient of performance) of the first operation year was approximately 8.7, indicating a better performance than the common heat pump heating system.

J. Xu; Y. Li; R.Z. Wang; W. Liu

2014-01-01T23:59:59.000Z

311

Handbook of experiences in the design and installation of solar heating and cooling systems  

SciTech Connect

A large array of problems encountered are detailed, including design errors, installation mistakes, cases of inadequate durability of materials and unacceptable reliability of components, and wide variations in the performance and operation of different solar systems. Durability, reliability, and design problems are reviewed for solar collector subsystems, heat transfer fluids, thermal storage, passive solar components, piping/ducting, and reliability/operational problems. The following performance topics are covered: criteria for design and performance analysis, domestic hot water systems, passive space heating systems, active space heating systems, space cooling systems, analysis of systems performance, and performance evaluations. (MHR)

Ward, D.S.; Oberoi, H.S.

1980-07-01T23:59:59.000Z

312

AWSWAH - the heat pipe solar water heater  

SciTech Connect

An all weather heat pipe solar water heater (AWSWAH) comprising a collector of 4 m/sup 2/ (43 ft/sup 2/) and a low profile water tank of 160 liters (42 gal.) was developed. A single heat pipe consisting of 30 risers and two manifolds in the evaporator and a spiral condenser was incorporated into the AWSWAH. Condensate metering was done by synthetic fiber wicks. The AWSWAH was tested alongside two conventional solar water heaters of identical dimensions, an open loop system and a closed loop system. It was found that the AWSWAH was an average of 50% more effective than the open system in the temperature range 30-90 /sup 0/C (86-194 /sup 0/F). The closed loop system was the least efficient of the three systems.

Akyurt, M.

1986-01-01T23:59:59.000Z

313

Beaches Energy Services - Solar Water Heating Rebate Program | Department  

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

Beaches Energy Services - Solar Water Heating Rebate Program Beaches Energy Services - Solar Water Heating Rebate Program Beaches Energy Services - Solar Water Heating Rebate Program < Back Eligibility Residential Savings Category Heating & Cooling Solar Water Heating Maximum Rebate One rebate per customer Rebates will not exceed purchase price Program Info State Florida Program Type Utility Rebate Program Rebate Amount Solar Water Heater: $500 Provider Beaches Energy Services Beaches Energy Services offers a solar water heating rebate to their residential customers. This $500 rebate applies to new systems which are properly installed and certified. New construction and solar pool heating systems do not qualify for the rebate payment. Systems must be installed by a licensed Florida contractor and must be FSEC certified. Rebates will not

314

Optimal Control Strategy of Solar Heating Systems Using a Long Term Heat Storage  

Science Journals Connector (OSTI)

...the estimation of the energy gain expected from optimizing the control of a given gas/solar heating system using a long term heat storage in the ground.

M. Boucher; M. Pottier; Y. Lenoir; R. Lidin…

1984-01-01T23:59:59.000Z

315

A study in the application of domestic solar assisted heat pumps for heating and cooling.  

E-Print Network (OSTI)

??In the present work, the more important parameters of the heat pump system and of solar assisted heat pump systems were analysed in a quantitative… (more)

Pabón Díaz, Misael

1982-01-01T23:59:59.000Z

316

ESPEE Solar | Open Energy Information  

Open Energy Info (EERE)

Place: Bangalore, Karnataka, India Zip: 560 091 Sector: Solar Product: Distributor of solar thermal water heating systems and PV lights. References: ESPEE Solar1 This article...

317

Far-IR and radio thermal continua in solar flares  

E-Print Network (OSTI)

With the invention of new far-infrared (FIR) and radio mm and sub-mm instruments (DESIR on SMESE satellite, ESO-ALMA), there is a growing interest in observations and analysis of solar flares in this so far unexplored wavelength region. Two principal radiation mechanisms play a role: the synchrotron emission due to accelerated particle beams moving in the magnetic field and the thermal emission due to the energy deposit in the lower atmospheric layers. In this contribution we explore the time-dependent effects of beams on thermal FIR and radio continua. We show how and where these continua are formed in the presence of time dependent beam heating and non-thermal excitation/ionisation of the chromospheric hydrogen plasma.

Kašparová, J; Karlický, M; Moravec, Z; Varady, M

2009-01-01T23:59:59.000Z

318

Anisotropic turbulent model for solar coronal heating  

E-Print Network (OSTI)

Context : We present a self-consistent model of solar coronal heating, originally developed by Heyvaert & Priest (1992), in which we include the dynamical effect of the background magnetic field along a coronal structure by using exact results from wave MHD turbulence (Galtier et al. 2000). Aims : We evaluate the heating rate and the microturbulent velocity for comparison with observations in the quiet corona, active regions and also coronal holes. Methods :The coronal structures are assumed to be in a turbulent state maintained by the slow erratic motions of the magnetic footpoints. A description for the large-scale and the unresolved small-scale dynamics are given separately. From the latter, we compute exactly (or numerically for coronal holes) turbulent viscosites that are finally used in the former to close self-consistently the system and derive the heating flux expression. Results : We show that the heating rate and the turbulent velocity compare favorably with coronal observations. Conclusions : Although the Alfven wave turbulence regime is strongly anisotropic, and could reduce a priori the heating efficiency, it provides an unexpected satisfactory model of coronal heating for both magnetic loops and open magnetic field lines.

B. Bigot; S. Galtier; H. Politano

2007-12-12T23:59:59.000Z

319

Phase Change Materials for Thermal Energy Storage in Concentrated Solar Thermal Power Plants.  

E-Print Network (OSTI)

??Experimental studies are presented that aim to utilize phase change materials (PCM's) to enhance thermal energy storage systems for concentrated solar thermal power (CSP) systems.… (more)

Hardin, Corey Lee

2011-01-01T23:59:59.000Z

320

Solar-assisted heat pump – A sustainable system for low-temperature water heating applications  

Science Journals Connector (OSTI)

Abstract Direct expansion solar assisted heat pump systems (DX-SAHP) have been widely used in many applications including water heating. In the DX-SAHP systems the solar collector and the heat pump evaporator are integrated into a single unit in order to transfer the solar energy to the refrigerant. The present work is aimed at studying the use of the DX-SAHP for low temperature water heating applications. The novel aspect of this paper involves a detailed long-term thermo-economic analysis of the energy conservation potential and economic viability of these systems. The thermal performance is simulated using a computer program that incorporates location dependent radiation, collector, economic, heat pump and load data. The economic analysis is performed using the life cycle cost (LCC) method. Results indicate that the DX-SAHP water heaters systems when compared to the conventional electrical water heaters are both economical as well as energy conserving. The analysis also reveals that the minimum value of the system life cycle cost is achieved at optimal values of the solar collector area as well as the compressor displacement capacity. Since the cost of SAHP system presents a barrier to mass scale commercialization, the results of the present study indicating that the SAHP life cycle cost can be minimized by optimizing the collector area would certainly be helpful in lowering, if not eliminating, the economic barrier to these systems. Also, at load temperatures higher than 70 °C, the performance of the single stage heat pump degrades to the extent that its cost and efficiency advantages over the electric only system are lost.

S.K. Chaturvedi; V.D. Gagrani; T.M. Abdel-Salam

2014-01-01T23:59:59.000Z

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


321

Solar Hot Water Heater Augmented with PV-TEM Heat Pump.  

E-Print Network (OSTI)

??Solar assisted heat pumps (SAHPs) can provide higher collector efficiencies and solar fractions when compared against standard solar hot water heaters. Vapour compression (VC) heat… (more)

PRESTON, NATHANIEL

322

Thermal and Hydraulic Design of a Solar Collector Field for a Primary School Pool  

Science Journals Connector (OSTI)

Abstract The methodology and results of the thermal and hydraulic design for a solar heating field of an elementary school's semi-olympic pool is presented. Improved flat solar collectors with copper tube and aluminum fins were used. From own experiences, many Mexican solar fields do not operate correctly because of their poor flow balance (irrigation), may be due to lack of attention given to this aspect. That's why the research of this work focuses on studying the behavior of the pressure drop in a hydraulic arrangement, particularly of this facility, in which all collector batteries are connected in parallel. Previously two solar collectors were sent to a specialized laboratory for certification tests, obtaining the optimum water flow value for maximum thermal efficiency. The results show an optimum range between 4 and 11 L/min. On the other hand, the development of a thermal model based on a temporal energy balance, allowed us to determine that the optimum solar heating area is around 338 m2, using 195 flat-coated solar collectors, with copper tube and aluminum fin. For this heating system a water volume/solar collection area relation, called REVA, of 1.45m3/m2 was obtained. Referred to the hydraulic design and using the program EPANET 2.0 it was found that in the proposed arrangement, 192 solar collectors were irrigated with the optimal range and only 2 solar collectors were below the lower range at 3 L/min.

Rubén Dorantes; Georgina García; Carlos Salazar; Heber Oviedo; Humberto González; Raúl Alanis; Edgar Salazar; Ignacio R. Martín-Dominguez

2014-01-01T23:59:59.000Z

323

EWEB - Residential Solar Water Heating Loan Program | Department of Energy  

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

EWEB - Residential Solar Water Heating Loan Program EWEB - Residential Solar Water Heating Loan Program EWEB - Residential Solar Water Heating Loan Program < Back Eligibility Residential Savings Category Heating & Cooling Solar Swimming Pool Heaters Water Heating Maximum Rebate $7,000 Program Info State Oregon Program Type Utility Loan Program Rebate Amount Up to 75% of system cost after rebate Provider Eugene Water and Electric Board Eugene Water and Electric Board (EWEB) offers residential customers a loan and cash discount program called, "The Bright Way To Heat Water." The program is designed to promote the installation of solar water heaters and solar pool heating systems. It began in May 1990 as part of a demand-side management initiative. The loans have been offered since May 1995. EWEB provides all funding for both loans and cash discounts. Customers may

324

Solar Water Heating Incentive Program | Department of Energy  

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

Solar Water Heating Incentive Program Solar Water Heating Incentive Program Solar Water Heating Incentive Program < Back Eligibility Agricultural Commercial Industrial Institutional Local Government Nonprofit Residential Schools State Government Savings Category Heating & Cooling Solar Swimming Pool Heaters Water Heating Maximum Rebate Varies by sector, location, technology, and electric or gas provider; see below for details Program Info Start Date October 2003 State Oregon Program Type State Rebate Program Rebate Amount Varies by sector, water heating fuel, and electric or gas provider; see below for details Provider Energy Trust of Oregon Beginning in the fall of 2003, Energy Trust of Oregon's Solar Water Heating (SWH) Incentive Program offers incentives to customers of Pacific Power, PGE, NW Natural Gas and Cascade Natural Gas who install solar water or pool

325

Encouraging Combined Heat and Power in California Buildings  

E-Print Network (OSTI)

for energy storage, chiller, PV and solar thermal equipmentsolar thermal electric storage heat storage absorption chillers zero net energyenergy resources (DER) technologies such as PV, solar thermal,

Stadler, Michael

2014-01-01T23:59:59.000Z

326

A Better Steam Engine: Designing a Distributed Concentrating Solar Combined Heat and Power System  

E-Print Network (OSTI)

to be more suited to solar thermal energy sources. Airunit of solar thermal and solar electric energy from a DCS-concentrating solar systems is indeed thermal energy. There

Norwood, Zachary Mills

2011-01-01T23:59:59.000Z

327

Phase Change Materials for Thermal Energy Storage in Concentrated Solar Thermal Power Plants  

E-Print Network (OSTI)

Solar thermal energy collection is an exciting technology for the replacement of non-renewable energy production.

Hardin, Corey Lee

2011-01-01T23:59:59.000Z

328

Solar/heat?driven thermoacoustic engine  

Science Journals Connector (OSTI)

With its abundance and cleanliness solar energy has been harnessed to generate power using various techniques. A thermoacoustic engine is described which was built instrumented and tested to demonstrate use of solar power to generate acoustic power. Sunlight is collected using a 3?ft?diam acrylic Fresnel lens and focused on one end of a ceramic ‘‘stack.’’ This engine has a total length of 40 cm and resonates at around 420 Hz. To permit testing on the abundant cloudy days in Pennsylvania an electrical heater was also built and installed to provide a reliable thermal energy source for indoor measurements. Experimental results are in reasonable agreement with a DE L T AE model. When running in solar mode as a 1/4 wavelength open end resonator the measured acoustic SPL can reach 120 dB easily at 1 m away from the open end on a clear day. The onset of sound generation can be achieved even with a 1?ft?diam Fresnel lens. While an impressive demonstration in terms of sound output despite modest efficiency real solar energy conversion will be improved with inert gas mixtures at higher pressures. [Work supported by ONR lens provided by G. W. Swift.

Reh?lin Chen; Steven L. Garrett

1998-01-01T23:59:59.000Z

329

Unique Solar Thermal Laboratory Gets an Upgrade | Department of Energy  

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

Unique Solar Thermal Laboratory Gets an Upgrade Unique Solar Thermal Laboratory Gets an Upgrade Unique Solar Thermal Laboratory Gets an Upgrade September 10, 2010 - 2:54pm Addthis This “power tower” is part of the National Solar Thermal Test Facility in Albuquerque, which is getting upgrades through Recovery Act funding. | Photo Courtesy of Sandia National Laboratories This "power tower" is part of the National Solar Thermal Test Facility in Albuquerque, which is getting upgrades through Recovery Act funding. | Photo Courtesy of Sandia National Laboratories Lorelei Laird Writer, Energy Empowers The National Solar Thermal Test Facility at Sandia National Laboratories is unique - and in demand. The Facility has been instrumental in NASA tests, national defense programs and concentrated solar technology development.

330

Analysis of the heat transfer and airflow in solar chimney drying system with porous absorber  

Science Journals Connector (OSTI)

Abstract In this paper, the chimney is assembled with porous absorber for the indirect-mode solar dryer. Local thermal non-equilibrium (LTNE) exists in the porous absorber, so the double energy equations and Brinkman–Forchheimer extended Darcy model are employed to analyze the heat transfer and flow in the solar porous absorber, and the k-? turbulent model coupled with the above equations are also used to investigate the influences of the porous absorber inclination and the height of drying system on the heat transfer in the solar dryer. The specific heat capacities (?c) and thermal conductivity ks have remarkable effects on the average temperature of solar porous absorber in the drying system. The mean temperature of the higher (?c) Aluminous solar absorber is lower and the top temperature of porous absorber delays due to lower thermal conductivity ks. The inclined angle of porous absorber influences the airflow and temperature field in the solar dryer greatly. With the height of solar dryer changing from 1.41 m to 1.81 m, the higher airflow velocity and the lower temperature at chimney exit can be achieved. The simulations agree with the published experimental data. All these results should be taken into account for the promotion and application of the solar chimney dryer with porous absorber.

Wei Chen; Man Qu

2014-01-01T23:59:59.000Z

331

Modeling of Thermal Storage Systems in MILP Distributed Energy Resource Models  

E-Print Network (OSTI)

HP Abs. Chiller PV Solar Thermal Annual CO 2 Emissionsfrom CHP [kW] heat from solar thermal [kW] heat from naturalof micro-CHP units, solar thermal units and heat pumps (

Steen, David

2014-01-01T23:59:59.000Z

332

Camera-based reflectivity measurement for solar thermal applications  

E-Print Network (OSTI)

Tubular receivers for solar thermal power plants, specifically tower plants, are in common use, in plantsCamera-based reflectivity measurement for solar thermal applications John D. Pye1 , Clifford K. Ho2 of the solar-weighted reflectivity of the receiver component in CSP systems. Such reflectivity measurement

333

Thermoeconomic Analysis of a Solar Heat-Pump System  

E-Print Network (OSTI)

This paper introduces a solar energy heat-pump system and analyzes the thermoeconomics. The results show that the solar energy heat-pump system can be operated in different modes and used for room heating in winter and cooling in summer and...

Gao, Y.; Wang, S.

2006-01-01T23:59:59.000Z

334

Control valve for solar heating systems  

SciTech Connect

A control valve for a solar heating system is disclosed. The valve has a valve body which defines four chambers disposed end to end. A valve operating rod is movable axially through all four chambers under motor control and carries a valve member for directing liquid through the valve. In one position of the valve member, incoming liquid is directed to an outlet for connection to a solar collector and liquid returning from the collector can flow through the valve body and back to the swimming pool. In the other position of the valve member, the liquid bypasses the collector and is directed back to the pool while liquid in the collector drains back into the valve body through the outlet and is removed by suction from a drain-down chamber in the valve body.

Stewart, J.M.

1981-12-29T23:59:59.000Z

335

Distributed and Steady Modeling of the Pv Evaporator in a Pv/T Solar Assisted Heat Pump  

Science Journals Connector (OSTI)

A specially designed direct-expansion evaporator (PV evaporator), which is laminated with PV cells on the front surface is adopted in a photovoltaic/thermal solar assisted heat pump (PV/T SAHP) to obtain both the...

Jie Ji; Hanfeng He; Wei He; Gang Pei…

2009-01-01T23:59:59.000Z

336

Experimental performance analysis of a solar assisted ground source heat pump system under different heating operation modes  

Science Journals Connector (OSTI)

Abstract This paper presents an experimental study on the influence of operation modes on the heating performance of a solar assisted ground source heat pump system (SAGSHPS). Through experiments conducted in January, the characteristics of the SAGSHPS were investigated under different heating operation modes. The results indicate that the solar thermal could be used to accelerate the soil recovery when the heat pump unit is turned off, but the duration of solar use to recharge boreholes should be optimized according to the water temperature in the solar heat storage water tank to avoid unnecessary power consumption of the circulation pump. In addition, the solar heat storage water tank is beneficial for the stable operation of the SAGSHPS. The volumetric flow rate in the water tank has a significant impact on the electricity consumption of the SAGSHPS. From comprehensive analysis of the integral effect of the SAGSHPS under different modes, the mode in which the water tank is connected with the ground heat exchangers (GHES) in series is the recommended mode for the SAGSHPS in the coldest month in Dalian.

Lanhua Dai; Sufen Li; Lin DuanMu; Xiangli Li; Yan Shang; Ming Dong

2015-01-01T23:59:59.000Z

337

Substations for Decentralized Solar District Heating: Design, Performance and Energy Cost  

Science Journals Connector (OSTI)

Abstract The development of solar district heating is gaining more and more interest, but, in some case the space available for the integration of solar collectors on the ground is limited and the use of decentralized systems is necessary. For decentralized solar district heating systems different hydraulic schemes at the substation level, with or without local use of solar energy, are possible. The present paper detailed an advanced study on decentralized solar district heating system using dynamic simulation software. Nine different hydraulic schemes for substations have been investigated with a return to return feed in. For each scheme many parameters that influence the performance of the solar installation have been studied such as the district heating network return temperature, the solar collector area and the type of solar collector (low temperature or high temperature solar collector). The comparison between the different hydraulic schemes is based on thermal efficiency but also on solar energy cost using the methodology of the Levelized Cost Of Energy (LCOE).

Cedric Paulus; Philippe Papillon

2014-01-01T23:59:59.000Z

338

Experimental Research of an Active Solar Heating System  

E-Print Network (OSTI)

system are discussed in this paper. Based on the design, construction, testing and economic analysis of a demonstration project with the solar heating system, this paper discusses how to connect the solar energy collector with the electricity heater...

Gao, X.; Li, D.

2006-01-01T23:59:59.000Z

339

South River EMC- Solar Water Heating Rebate Program  

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

South River Electric Membership Corporation (EMC) is providing rebates to encourage their customers to install solar water heating systems. To be eligible for the rebate solar collectors must have...

340

Thermal Storage and Advanced Heat Transfer Fluids (Fact Sheet)  

SciTech Connect

Fact sheet describing NREL CSP Program capabilities in the area of thermal storage and advanced heat transfer fluids: measuring thermophysical properties, measuring fluid flow and heat transfer, and simulating flow of thermal energy and fluid.

Not Available

2010-08-01T23:59:59.000Z

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


341

Solar collector for fluid heating system  

SciTech Connect

A solar collector for use in either an upfeed forced hot water heating system or a downfeed system features a pair of serpentine coils arranged in opposing flow relationship within a shallow insulated collector housing having a sealed glass closure panel. The two serpentine coils lie in spaced parallel planes within the housing, and the two coils are offset laterally so that their individual longitudinal loops overlap laterally by approximately one-half the width of each loop. The flow of heated fluid in each serpentine coil is controlled independently of the other coil by a temperature-responsive modulating valve connected in each coil close to the outlet end thereof within the housing. Efficiency of operation and practicality and economy of construction are featured.

Wilson, D.C.

1980-09-30T23:59:59.000Z

342

Countermeasures to Microbiofouling in Simulated Ocean Thermal Energy Conversion Heat Exchangers with Surface and Deep Ocean Waters in Hawaii  

Science Journals Connector (OSTI)

...thermal energy from warm ocean waters. A small fraction...converted to electrical power and waste heat is rejected...water pumped from the ocean depth. Solar energy absorbed by the ocean surface provides the heat...Thermal losses, the power requirements to pump large...

Leslie Ralph Berger; Joyce A. Berger

1986-06-01T23:59:59.000Z

343

Review Article Solar-Thermal Powered Desalination: Its Significant  

E-Print Network (OSTI)

1 Review Article Solar-Thermal Powered Desalination: Its Significant Challenges and Potential John@kau.edu.sa Abstract Solar-desalination systems are desalination systems that are powered by solar energy. With the goal of identifying the key technical challenges and potential opportunities solar-desalination, we

Reif, John H.

344

Augmentation of thermal power stations with solar energy  

Science Journals Connector (OSTI)

A new concept of integration of a solar concentrator field with a modern thermal power station is proposed. Such a configuration ... and infrastructure as a base load facility and solar energy to reduce the fuel ...

BR Pai

1991-06-01T23:59:59.000Z

345

Solar pool heating system: An olympic-sized effort  

SciTech Connect

This article describes design and building of the Georgia Tech Aquatic Center Heliocol solar pool heating system, developed for the 1996 Olympics in Atlanta.

Sheinkopf, K.

1996-07-01T23:59:59.000Z

346

Fort Pierce Utilities Authority- Solar Water Heating Rebate (Florida)  

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

'''''Fort Pierce Utilities Authority has suspended the Solar Water Heating rebate program until 2013. Contact the utility for more information on these offerings.'''''

347

Convective Heat Transfer from Exposed Flat Horizontal Surface in Outdoorconditions at Low Wind Speeds: An Application to Flat Plate Solar Collector  

Science Journals Connector (OSTI)

Estimation of various heat losses in flat plate solar collectors is important for their thermal performance evaluation under different operating conditions. Upward heat losses have a major contribution in the ...

Suresh Kumar; S. C. Mullick

2009-01-01T23:59:59.000Z

348

Simulation and experimental study on honeycomb-ceramic thermal energy storage for solar thermal systems  

Science Journals Connector (OSTI)

Abstract A honeycomb-ceramic thermal energy storage (TES) was proposed for thermal utilization of concentrating solar energy. A numerical model was developed to simulate the thermal performances, and TES experiments were carried out to demonstrate and improve the model. The outlet temperature difference between simulation and experimental results was within 5% at the end of a charging period, indicating the simulation model was reasonable. The simulation model was applied to predict the effects of geometric, thermo-physical parameters and flow fluxes on TES performances. The temperature dropped more quickly and decreased to a lower temperature in discharging period when the conductivity was smaller. The storage capacity increased with the growth of volumetric heat capacity. As to a TES with big channels and thin walls, the outlet temperature increased quickly and greatly in a charging process and dropped sharply in a discharging process.

Zhongyang Luo; Cheng Wang; Gang Xiao; Mingjiang Ni; Kefa Cen

2014-01-01T23:59:59.000Z

349

On the performance of the flat plate solar heat collector  

Science Journals Connector (OSTI)

A flat plate heat collector was constructed for the purpose of heating water by solar energy. It was erected facing south, tilted to the horizontal at the optimum tilt angle, and tested ... was found, for the dim...

M. K. Elnesr; A. M. Khalil

1965-01-01T23:59:59.000Z

350

Maricopa Assn. of Governments - PV and Solar Domestic Water Heating  

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

Maricopa Assn. of Governments - PV and Solar Domestic Water Heating Maricopa Assn. of Governments - PV and Solar Domestic Water Heating Permitting Standards Maricopa Assn. of Governments - PV and Solar Domestic Water Heating Permitting Standards < Back Eligibility Commercial Construction Installer/Contractor Residential Savings Category Solar Buying & Making Electricity Heating & Cooling Water Heating Program Info State Arizona Program Type Solar/Wind Permitting Standards Provider Maricopa Association of Governments In an effort to promote uniformity, the Maricopa Association of Governments (MAG) approved standard procedures for securing necessary electrical/building permits for residential (single-family) and commercial PV systems. These procedures are a part of the MAG Building Code Standards. The standards address requirements for the solar installation, plans,

351

Energy Balance and Thermal Comfort in Passive Solar Housing  

Science Journals Connector (OSTI)

To evaluate the performance of different passive solar dwellings it is necessary to consider not only the thermal performance but also the “comfort performance” of the system.

K. Alder; Ch. Eriksson; A. Faist; N. Morel

1984-01-01T23:59:59.000Z

352

Parabolic Trough Solar Thermal Electric Power Plants (Fact Sheet)  

SciTech Connect

This fact sheet provides an overview of the potential for parabolic trough solar thermal electric power plants, especially in the Southwestern U.S.

Not Available

2006-07-01T23:59:59.000Z

353

Thermoelectrics Combined with Solar Concentration for Electrical and Thermal Cogeneration.  

E-Print Network (OSTI)

??A solar tracker and concentrator was designed and assembled for the purpose of cogeneration of thermal power and electrical power using thermoelectric technology. A BiTe… (more)

Jackson, Philip Robert

2012-01-01T23:59:59.000Z

354

Colored solar-thermal absorbing coatings with high absorptance  

Science Journals Connector (OSTI)

It's difficult to obtain different color appearance and keep high absorptance simultaneously. We introduced AR films into solar-thermal absorbing coatings to tune the color appearance...

Wang, Shao-Wei; Chen, Feiliang; Liu, Xingxing; Wang, Xiaofang; Yu, Liming; Lu, Wei

355

Thermal Efficiency of Solar Collector Made from Thermoplastics  

Science Journals Connector (OSTI)

Abstract Thermoplastics solar collectors have been used to replace a typical metal collector because their mechanical and physical properties make the volume production of lightweight, low cost and corrosion resistance. Effect of thermal conductivity and collector area was observed for four type of themoplastics based i.e PVC-B (PVC: Polyvinyl Chloride-Blue), PB (PB: Polybutene), PP-R (PP-R: Polypropylene Random Copolymer) and PVC-CB: (Polyvinyl Chloride-Carbon Black). The collector area of 2 m2 were prepared as for solar collector. The position of collector panel to south orientation and angle of 140 to the horizontal, which was the collector slope obtaining highest annual efficiency in Thailand, were implemented. Data was collected by data logger from 9.00-16.00 am throughout the day in which temperature reached a sufficient level according to standard test method of ASHRAE 93 77. The mass flow rate of water in collector was 0.02 (kg.s-1). The results of the differing thermal conductivity materials have indicated that there is no different of the materials on collector thermal efficiency. The collector efficiency was depends on the areas of the panel. This suggestion that one material should not only be chosen over another in term of its ability to transfer heat to the liquid within the panel but also collector area.

Warunee Ariyawiriyanan; Tawatchai Meekaew; Manop Yamphang; Pongpitch Tuenpusa; Jakrawan Boonwan; Nukul Euaphantasate; Pongphisanu Muangchareon; Supachat Chungpaibulpatana

2013-01-01T23:59:59.000Z

356

SOLAR ENERGY PROGRAM: CHAPTER FROM THE ENERGY AND ENVIRONMENT ANNUAL REPORT 1979  

E-Print Network (OSTI)

Particle Suspensions for Solar Energy Collection A.Sensible Heat Storage for a Solar Thermal Power Plant T.and A. Pfeiffhofer • . Solar Heated Gas Turbine Process

Authors, Various

2010-01-01T23:59:59.000Z

357

Duquesne Light Company - Residential Solar Water Heating Program |  

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

Duquesne Light Company - Residential Solar Water Heating Program Duquesne Light Company - Residential Solar Water Heating Program Duquesne Light Company - Residential Solar Water Heating Program < Back Eligibility Multi-Family Residential Residential Savings Category Heating & Cooling Solar Water Heating Program Info Start Date 11/30/2009 Expiration Date 03/31/2013 State Pennsylvania Program Type Utility Rebate Program Rebate Amount $286/system Provider Duquesne Light Company Duquesne Light provides rebates to its residential customers for purchasing and installing qualifying solar water heating systems. Eligible systems may receive a flat rebate of $286 per qualifying system. Various equipment, installation, contractor, and warranty requirements apply, as summarized above and described in more detail in program documents. Customers must

358

Lake Worth Utilities - Residential Solar Water Heating Rebate Program |  

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

Lake Worth Utilities - Residential Solar Water Heating Rebate Lake Worth Utilities - Residential Solar Water Heating Rebate Program Lake Worth Utilities - Residential Solar Water Heating Rebate Program < Back Eligibility Residential Savings Category Heating & Cooling Solar Water Heating Maximum Rebate $450 Rebates must not exceed purchase price Program Info State Florida Program Type Utility Rebate Program Rebate Amount $450 per system Provider City of Lake Worth Utilities The City of Lake Worth Utilities (CLWU), in conjunction with Florida Municipal Power Agency, offers rebates to customers who purchase and install a solar water heating system for residential use. A rebate of $450 per system is available to eligible applicants. Eligible equipment must be located on customer premises within the CLWU service territory, and must

359

Valley Electric Association - Solar Water Heating Program | Department of  

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

Valley Electric Association - Solar Water Heating Program Valley Electric Association - Solar Water Heating Program Valley Electric Association - Solar Water Heating Program < Back Eligibility Residential Savings Category Heating & Cooling Solar Water Heating Program Info State Nevada Program Type Utility Loan Program Provider Valley Electric Association Valley Electric Association (VEA), a nonprofit member owned cooperative, developed the domestic solar water heating program to encourage energy efficiency at the request of the membership. VEA partnered with Great Basin College to train and certify installers, creating jobs in the community, and also with Rheem Manufacturing and a local licensed contractor to install the units. A site visit is performed to determine the best installation and system design for each member. Members have the option of

360

Experimental performance of solid-gas chemical heat pump in solar chemical heat pump dryer  

Science Journals Connector (OSTI)

A solar assisted chemical heat pump dryer has been designed, fabricated and tested. The performance of the system has been studied under the meteorological conditions of Malaysia. The system consists of four mean components: solar collector (evacuated ... Keywords: coefficient of performance, drying, energy density, evacuated tubes solar collector, reactor temperature, solid gas chemical heat pump

M. Ibrahim; K. Sopian; A. S. Hussein; W. R. W. Daud; A. Zaharim

2009-02-01T23:59:59.000Z

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


361

A review of thermal energy storage technologies and control approaches for solar cooling  

Science Journals Connector (OSTI)

Abstract This paper presents a review of thermal storage media and system design options suitable for solar cooling applications. The review covers solar cooling applications with heat input in the range of 60–250 °C. Special attention is given to high temperature (>100 °C) high efficiency cooling applications that have been largely ignored in existing reviews. Sensible and latent heat storage materials have been tabulated according to their suitability for double effect and triple effect chillers. A summary of system designs for water storage (sensible heat), and phase change material storage (latent heat) has been provided. The article summarizes literature related to solar thermal air-conditioning systems from a material level as well as plant level considerations. This includes evaluating various control strategies for managing the thermal store, that aid in optimal functioning of a solar air conditioning plant. Modeling approaches are reviewed for sizing the solar thermal store, highlighting the large difference seen in specific storage size when applied in different applications.

Sergio Pintaldi; Cristian Perfumo; Subbu Sethuvenkatraman; Stephen White; Gary Rosengarten

2015-01-01T23:59:59.000Z

362

Heating Water with Solar Energy Costs Less at the Phoenix Federal Correctional Institution; Federal Energy Management Program (FEMP) Achieving Results with Renewable Energy in the Federal Government (Brochure)  

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

Heating Water with Solar Energy Costs Less Heating Water with Solar Energy Costs Less at the Phoenix Federal Correctional Institution A large solar thermal system installed at the Phoenix Federal Correctional Institution (FCI) in 1998 heats water for the prison and costs less than buying electricity to heat that water. This renewable energy system provides 70% of the facility's annual hot water needs. The Federal Bureau of Prisons did not incur the up-front

363

Influence of circumferential solar heat flux distribution on the heat transfer coefficients of linear Fresnel collector absorber tubes  

Science Journals Connector (OSTI)

Abstract The absorber tubes of solar thermal collectors have enormous influence on the performance of the solar collector systems. In this numerical study, the influence of circumferential uniform and non-uniform solar heat flux distributions on the internal and overall heat transfer coefficients of the absorber tubes of a linear Fresnel solar collector was investigated. A 3D steady-state numerical simulation was implemented based on ANSYS Fluent code version 14. The non-uniform solar heat flux distribution was modelled as a sinusoidal function of the concentrated solar heat flux incident on the circumference of the absorber tube. The k–? model was employed to simulate the turbulent flow of the heat transfer fluid through the absorber tube. The tube-wall heat conduction and the convective and irradiative heat losses to the surroundings were also considered in the model. The average internal and overall heat transfer coefficients were determined for the sinusoidal circumferential non-uniform heat flux distribution span of 160°, 180°, 200° and 240°, and the 360° span of circumferential uniform heat flux for 10 m long absorber tubes of different inner diameters and wall thicknesses with thermal conductivity of 16.27 W/mK between the Reynolds number range of 4000 and 210,000 based on the inlet temperature. The results showed that the average internal heat transfer coefficients for the 360° span of circumferential uniform heat flux with different concentration ratios on absorber tubes of the same inner diameters, wall thicknesses and thermal conductivity were approximately the same, but the average overall heat transfer coefficient increased with the increase in the concentration ratios of the uniform heat flux incident on the tubes. Also, the average internal heat transfer coefficient for the absorber tube with a 360° span of uniform heat flux was approximately the same as that of the absorber tubes with the sinusoidal circumferential non-uniform heat flux span of 160°, 180°, 200° and 240° for the heat flux of the same concentration ratio, but the average overall heat transfer coefficient for the uniform heat flux case was higher than that of the non-uniform flux distributions. The average axial local internal heat transfer coefficient for the 360° span of uniform heat flux distribution on a 10 m long absorber tube was slightly higher than that of the 160°, 200° and 240° span of non-uniform flux distributions at the Reynolds number of 4 000. The average internal and overall heat transfer coefficients for four absorber tubes of different inner diameters and wall thicknesses and thermal conductivity of 16.27 W/mK with 200° span of circumferential non-uniform flux were found to increase with the decrease in the inner-wall diameter of the absorber tubes. The numerical results showed good agreement with the Nusselt number experimental correlations for fully developed turbulent flow available in the literature.

Izuchukwu F. Okafor; Jaco Dirker; Josua P. Meyer

2014-01-01T23:59:59.000Z

364

Flow and heat transfer in porous micro heat sink for thermal management of high power LEDs  

Science Journals Connector (OSTI)

A novel porous micro heat sink system is presented for thermal management of high power LEDs, which has high heat transport capability. The operational principle and heat transfer characteristics of porous micro heat sink are analyzed. Numerical model ... Keywords: Heat dissipation, High heat flux, High power LEDs, Porous media, Porous micro heat sink

Z. M. Wan; J. Liu; K. L. Su; X. H. Hu; S. S. M

2011-05-01T23:59:59.000Z

365

ZEN Eaga Solar Ltd | Open Energy Information  

Open Energy Info (EERE)

Newcastle upon Tyne, United Kingdom Zip: NE2 1DB Sector: Solar Product: Distributes solar thermal water heating and PV products. References: ZEN Eaga Solar Ltd1 This...

366

Effect of Solar Thermal Energy on Photoreactions’ Rate  

Science Journals Connector (OSTI)

The Shockley-Queisser limit predicts that at least 70% of solar energy is available to be converted into heat. In this paper, we show that this heating component can play a significant...

Hosseini Hashemi, Seyyed Mohammad; Choi, Jae-Woo; Psaltis, Demetri

367

Experimental analysis of a direct expansion solar assisted heat pump with integral storage tank for domestic water heating under zero solar radiation conditions  

Science Journals Connector (OSTI)

This paper deals with the experimental evaluation of the performance of a direct expansion solar assisted heat pump water heating (DX-SAHPWH) system working under zero solar radiation conditions at static heating operation mode of the storage tank. The DX-SAHPWH system includes two bare solar collectors as evaporator, a \\{R134a\\} rotary-type hermetic compressor, a thermostatic expansion valve and a helical coil condenser immersed in a 300 L water storage tank. The zero solar radiation and stable ambient air temperature working conditions were established by placing the solar collectors into a climate chamber. The analysis is based on experimental data taken from the DX-SAHPWH provided by the manufacturer and equipped with an appropriate data acquisition system. In the paper, the experimental facility, the data acquisition system and the experimental methodology are described. Performance parameters to evaluate the energy efficiency, such as COP and equivalent seasonal performance factors (SPFe) for the heating period, and the water thermal stratification in the storage tank are defined and obtained from the experimental data. Results from the experimental analysis under transient operating working conditions of the DX-SAHPWH system and its main components are shown and discussed. Lastly, the Huang and Lee DX-SAHPWH performance evaluation method was applied resulting in a characteristic COP of 3.23 for the DX-SAHPWH system evaluated under zero solar radiation condition.

José Fernández-Seara; Carolina Pińeiro; J. Alberto Dopazo; F. Fernandes; Paulo X.B. Sousa

2012-01-01T23:59:59.000Z

368

Unique Challenges in the Design and Operation Philosophy of Solar Thermal Power Plants  

Science Journals Connector (OSTI)

Abstract Solar thermal power plant design and operation philosophy involves unique challenges as compared to design of conventional thermal power plants. The solar receiver operation should be able to absorb maximum solar load during transient events like daily start-up and shut-down. This requires aggressive ramp rates for transient operation of the power plant. However, the component and system level limitations must be considered in formulating these modes of operation and ramp rates. A solar receiver which usually receives heat from heliostats is designed to receive high heat flux to operate at high temperature and pressure during daytime. However, during night-time the receiver receives no heat flux and is losing heat to the environment. Day-night cyclic operation of a solar thermal power plant induces thermal cycles in the solar receiver pressure parts. Since solar receiver tubes are not insulated, the amplitude of thermal cycling is significant and needs to be addressed with proper tools and design approach. Besides, higher plant cycle efficiency requires higher operating temperature and pressure of a solar receiver, further increasing the amplitude of thermal cycling. The system level and component level response to these day-night cycles has a significant impact on modes of operation as well as on the life usage of various components. It also affects the design, specifications and operation of various plant level components. The solar thermal power plant design and operation process is optimized by having a system level thermal-hydraulics model for the solar receiver to simulate the transient start-up and shut-down events. Since all of the major components of the system are included in the model, it reflects the transient response of each of the components on each other and on the overall system. This simulation can be used to generate input conditions for component level life usage analysis. The component level life usage analysis is done using the finite-element method. The component level life usage analysis determines the permissible ramp rates. The thermal-hydraulics dynamic simulation outlines the operational philosophy of the system.

R. Terdalkar; H. Qian; G. Ye

2014-01-01T23:59:59.000Z

369

Experience with solar systems for heating swimming pools in Germany  

SciTech Connect

The results of the demonstration programme [open quotes]Efficient Use of Energy in Swimming Pool Construction[close quotes] has had a positive effect on the dissipation of solar systems for swimming pools. Infrared measurements show how a homogeneous flow can be achieved in the absorber field. The fact that solar systems are acceptable can be clearly in evidence that the behaviour of visitors to purely solar-heated pools with variable water temperature does not differ in principle from conventionally-heated pools with constant temperature. Economic considerations of the operation show that swimming pool solar systems are competitive with conventional heating systems.

Croy, R.; Peuser, F.A. (Zentralstelle fuer Solartechnik, Hilden (Germany))

1994-07-01T23:59:59.000Z

370

OPTIMAi UTILIZATION OF SOLAR ENERGY IN HEATING AND COOLINGOF BUILDINGS  

E-Print Network (OSTI)

OPTIMAi UTILIZATION OF SOLAR ENERGY IN HEATING AND COOLINGOF BUILDINGS C. Byron Winn Gearold R fundamental optimization problems involved in the design of a solar building. The first is a parameter for the given system configu- ration and the opt the latter problem The CSU Solar parameters such as mal set

Moore, John Barratt

371

Turbulent heating of the corona and solar wind: the heliospheric  

E-Print Network (OSTI)

resembles magnetic lines of force Eclipse observations show the `solar corona' Thomson-scattered white light ­ photospheric light scattered from dust, solar spectrum remains ­ `zodiacal light' E corona ­ emission linesTurbulent heating of the corona and solar wind: the heliospheric dark energy problem Stuart D. Bale

372

Modeling of Performance, Cost, and Financing of Concentrating Solar, Photovoltaic, and Solar Heat Systems (Poster)  

SciTech Connect

This poster, submitted for the CU Energy Initiative/NREL Symposium on October 3, 2006 in Boulder, Colorado, discusses the modeling, performance, cost, and financing of concentrating solar, photovoltaic, and solar heat systems.

Blair, N.; Mehos, M.; Christiansen, C.

2006-10-03T23:59:59.000Z

373

Long Term Solar Heat Storage through Underground Water Tanks for the Heating of Housing  

Science Journals Connector (OSTI)

This project consists in the development of design methods of solar plants for heating of housing by means of the interseasonal storage of solar energy through water tanks located under or...

M. Cucumo; V. Marinelli; G. Oliveti; A. Sabato

1983-01-01T23:59:59.000Z

374

Entergy New Orleans - Residential Solar Water Heating Program (Louisiana) |  

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

Entergy New Orleans - Residential Solar Water Heating Program Entergy New Orleans - Residential Solar Water Heating Program (Louisiana) Entergy New Orleans - Residential Solar Water Heating Program (Louisiana) < Back Eligibility Residential Savings Category Heating & Cooling Solar Water Heating Maximum Rebate Residential Solutions: $1000/improvement Program Info Start Date 1/1/2011 State Louisiana Program Type Utility Rebate Program Rebate Amount kWh savings(annual) x $0.34/kWh Provider Energy Smart Solutions Center Entergy New Orleans offers a Solar Water Heater Rebate pilot program designed to help residential customers make energy efficiency improvements. Rebates will be offered on a first-come, first-served basis and reflected on the invoice as a discount. All systems must be OG 300 rated and incentive amount is based on kWh savings. Walk-through energy assessments

375

Solar wind electron density and temperature over solar cycle 23: Thermal noise measurements on Wind  

E-Print Network (OSTI)

Solar wind electron density and temperature over solar cycle 23: Thermal noise measurements on Wind; received in revised form 6 April 2005; accepted 25 April 2005 Abstract We present the solar wind plasma parameters obtained from the Wind spacecraft during more than nine years, encompassing almost the whole solar

California at Berkeley, University of

376

Survival of Microorganisms in a Rock Bed Under Conditions Simulating Solar Heat Storage  

Science Journals Connector (OSTI)

...Under Conditions Simulating Solar Heat Storage Andris Zervins 1 Michael Babcock...colonization of rock beds used for solar heat storage does not appear likely under...under conditions simulating solar heat storage. | A laboratory-scale unit...

Andris Zervins; Michael Babcock; Robert W. Stone

1981-05-01T23:59:59.000Z

377

California Solar Initiative- Low-Income Solar Water Heating Rebate Program  

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

The California Public Utilities Commission (CPUC) voted in October 2011 to create the California Solar Initiative (CSI) Thermal Low-Income program for single and multifamily residential properties....

378

Thermal behaviour of new crystalline semitransparent solar cell structure  

Science Journals Connector (OSTI)

This paper presents the structure of a novel semitransparent solar cell and its thermal behaviour, which cell can be used for building integrated applications. The crystalline self-made test cells can be manufactured using basic semiconductor technological ... Keywords: Building integrated photovoltaics, Semitransparent solar cell and thermal characteristics

Enik Bándy; Márta Rencz,

2013-11-01T23:59:59.000Z

379

Spectrally Solar Selective Coatings for Colored Flat Plate Solar Thermal Collectors  

Science Journals Connector (OSTI)

The paper is a review on the state-of-the-art on colored materials (absorbers and glazings) for solar thermal flat plate collectors obtained world-wide. The ... input for novel, market-acceptable flat plate solar

Luminita Isac; Alexandru Enesca…

2014-01-01T23:59:59.000Z

380

Task 39 Exhibition – Assembly of Polymeric Components for a New Generation of Solar Thermal Energy Systems  

Science Journals Connector (OSTI)

Abstract IEA SHC Task 39 is dedicated to the development, optimization and deployment of materials and designs for polymer based solar thermal systems and components. To increase the confidence in polymeric solar thermal applications, Task 39 actively supports international research activities and seeks to promote successful applications and state-of-the-art products. For the SHC conference 2013, different polymeric components suitable for domestic hot water preparation and space heating were singled out for an exhibition. Promising polymeric collectors, air collectors, thermosiphons, storage tanks and other components from industrial partners all over the world were brought to Freiburg and assembled at the Fraunhofer-Institute for Solar Energy Systems ISE. The resulting SHC Task 39 Exhibition of polymeric components shows the feasibility of all-polymeric solar thermal systems and highlights their potential, especially as scalable and modular applications for building integration or as export products to sunny regions.

Michael Koehl; Sandrin Saile; Andreas Piekarczyk; Stephan Fischer

2014-01-01T23:59:59.000Z

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


381

Recycling of wasted energy : thermal to electrical energy conversion  

E-Print Network (OSTI)

Other LGH sources include solar thermal energy, geo-thermalThe heat source can be solar thermal energy, biologicalsources include the coolants in coal and nuclear power plants, solar thermal energy,

Lim, Hyuck

2011-01-01T23:59:59.000Z

382

Simulation and Validation of a Single Tank Heat Pump Assisted Solar Domestic Water Heating System.  

E-Print Network (OSTI)

??This thesis is a study of an indirect heat pump assisted solar domestic hot water (I-HPASDHW) system, where the investigated configuration is called the Dual… (more)

Wagar, William Robert

2013-01-01T23:59:59.000Z

383

Development of a Web-based Emissions Reduction Calculator for Solar Thermal and Solar Photovoltaic Installations  

E-Print Network (OSTI)

DEVELOPMENT OF A WEB-BASED EMISSIONS REDUCTION CALCULATOR FOR SOLAR THERMAL AND SOLAR PHOTOVOLTAIC INSTALLATIONS Juan-Carlos Baltazar Research Associate Jeff S. Haberl, Ph.D., P.E. Professor/Associate Director Don R. Gilman, P.E. Senior... the potential emission reductions due to the electricity savings from the application of some of the most common solar thermal and solar photovoltaic systems. The methodology to estimate the potential NOx emission reduction integrates legacy analysis tools...

Baltazar-Cervantes, J. C.; Gilman, D.; Haberl, J. S.; Culp, C.

2005-01-01T23:59:59.000Z

384

Physical Properties of Solid Particle Thermal Energy Storage Media for Concentrating Solar Power Applications  

Science Journals Connector (OSTI)

Abstract Solid ceramic particles have proven to be an effective heat transfer and thermal storage media for central receiver power production for a heat input temperature up to 1000 °C. In the directly illuminated solid particle receiver, a cascade of ?0.1-1 mm diameter particles is directly heated within a receiver cavity by concentrated solar energy. The efficiency of this approach, with respect to the energy balance on the receiver itself, is dependent on the physical properties of the particles. In this work, the radiative properties, solar weighted absorptance and thermal emittance, have been measured for several commercially available particle candidates both in the as-received state and after thermal exposure to simulate extended operation at elevated temperature in air between 700?C-1000?C. Heating the particles is shown to significantly reduce the solar weighted absorptance of as-received particles within 24 hours of exposure to air at 1000 °C, while heating at 700 °C in air has relatively little effect. In the as-received state, solar weighted absorptance can be as high as 93%, dropping to 84% after 192 hours at 1000?C. Particle stability is better at 700?C, and the solar absorptance remains above 92% after 192 hours of exposure. Analysis using x-ray diffraction (XRD) shows evidence of multiple chemical transformations in the sintered bauxite particle materials, which contain oxides of aluminum, silicon, titanium, and iron, following heating in air. However, the XRD spectra show only small differences between as-received and heat treated particles leaving open the possibility that the observed change in radiative properties results from a change in oxidation state without a concomitant phase change. Regardless of the specific degradation mechanism, t he solar weighted absorptance of the particles can be increased beyond the as-received condition by chemically reducing the particles in forming gas (5%H2 in N2 or Ar) above 700 °C, providing a possible means of periodically rejuvenating degraded particles in situ.

N. Siegel; M. Gross; C. Ho; T. Phan; J. Yuan

2014-01-01T23:59:59.000Z

385

Development of Non?Tracking Solar Thermal Technology  

Science Journals Connector (OSTI)

The aims of this research is to develop high temperature solar thermal collectors that do not require complex solar tracking devices to maintain optimal performance. The collector technology developed through these efforts uses non?imaging optics and is referred to as an external compound parabolic concentrator. It is able to operate with a solar thermal efficiency of approximately 50% at a temperature of 200?°?C and can be readily manufactured at a cost between $15 and $18 per square foot.

2011-01-01T23:59:59.000Z

386

Solar Keymark-Experiences with the European Solar Thermal Quality Label  

Science Journals Connector (OSTI)

Many aspects come to mind when thinking and talking about technically reliable and long-time durable solar thermal products. The following paper tries to answer...

Korbinian Kramer; Matthias Rommel…

2009-01-01T23:59:59.000Z

387

Low Cost Solar Water Heating R&D | Department of Energy  

Energy Savers (EERE)

Low Cost Solar Water Heating R&D Low Cost Solar Water Heating R&D Emerging Technologies Project for the 2013 Building Technologies Office's Program Peer Review...

388

Building Codes and Regulations for Solar Water Heating Systems | Department  

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

Building Codes and Regulations for Solar Water Heating Systems Building Codes and Regulations for Solar Water Heating Systems Building Codes and Regulations for Solar Water Heating Systems June 24, 2012 - 1:50pm Addthis Photo Credit: iStockphoto Photo Credit: iStockphoto Before installing a solar water heating system, you should investigate local building codes, zoning ordinances, and subdivision covenants, as well as any special regulations pertaining to the site. You will probably need a building permit to install a solar energy system onto an existing building. Not every community or municipality initially welcomes residential renewable energy installations. Although this is often due to ignorance or the comparative novelty of renewable energy systems, you must comply with existing building and permit procedures to install your system.

389

Building Codes and Regulations for Solar Water Heating Systems | Department  

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

Building Codes and Regulations for Solar Water Heating Systems Building Codes and Regulations for Solar Water Heating Systems Building Codes and Regulations for Solar Water Heating Systems June 24, 2012 - 1:50pm Addthis Photo Credit: iStockphoto Photo Credit: iStockphoto Before installing a solar water heating system, you should investigate local building codes, zoning ordinances, and subdivision covenants, as well as any special regulations pertaining to the site. You will probably need a building permit to install a solar energy system onto an existing building. Not every community or municipality initially welcomes residential renewable energy installations. Although this is often due to ignorance or the comparative novelty of renewable energy systems, you must comply with existing building and permit procedures to install your system.

390

Sandia National Laboratories: National Solar Thermal Testing...  

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

Beam Profiling On November 2, 2012, in Concentrating Solar Power, News, Renewable Energy, Solar On Thursday, June 7, we began beam profiling the NSTTF field heliostat beam....

391

THERMAL ENERGY STORAGE IN AQUIFERS WORKSHOP  

E-Print Network (OSTI)

of Thermal Energy Energy Sources o Solar Heat o Winter Coldusual Solar Energy System which uses only a heat source andsources and heat sinks not found anywhere else. Furthermore even where Solar energy

Authors, Various

2011-01-01T23:59:59.000Z

392

Long Island Power Authority - Residential Solar Water Heating Rebate  

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

Long Island Power Authority - Residential Solar Water Heating Long Island Power Authority - Residential Solar Water Heating Rebate Program Long Island Power Authority - Residential Solar Water Heating Rebate Program < Back Eligibility Residential Savings Category Heating & Cooling Solar Water Heating Maximum Rebate $1,500 or 50% of installed cost; $2,000 for systems purchased by 12/31/13 Program Info Funding Source LIPA Efficiency Long Island Program Start Date December 2010 State New York Program Type Utility Rebate Program Rebate Amount $20 per kBTU (based on SRCC collector rating) Bonus Incentive for systems purchased by 12/31/13: 2 Collector system: $500 bonus rebate 1 Collector system: $250 bonus rebate Provider Long Island Power Authority '''''Note: For system purchased by December 31, 2013, LIPA is providing a

393

Underhood Thermal Management [Heat Transfer and Fluid Mechanics] - Nuclear  

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

Underhood Thermal Underhood Thermal Management Capabilities Engineering Computation and Design Engineering and Structural Mechanics Systems/Component Design, Engineering and Drafting Heat Transfer and Fluid Mechanics Overview Thermal Hydraulic Optimization of Nuclear Systems Underhood Thermal Management Combustion Simulations Advanced Model and Methodology Development Multi-physics Reactor Performance and Safety Simulations Other Capabilities Work with Argonne Contact us For Employees Site Map Help Join us on Facebook Follow us on Twitter NE on Flickr Heat Transfer and Fluid Mechanics Bookmark and Share Underhood Thermal Management Hybrid Vehicle Underhood Thermal Analysis Hybrid Vehicle Underhood Thermal Analysis. Click on image to view larger image. In addition to nuclear system applications, the section applies its

394

An integrated solar thermal power system using intercooled gas turbine and Kalina cycle  

Science Journals Connector (OSTI)

A new solar tower thermal power system integrating the intercooled gas turbine top cycle and the Kalina bottoming cycle is proposed in the present paper. The thermodynamic performance of the proposed system is investigated, and the irreversibility of energy conversion is disclosed using the energy–utilization diagram method. On the top cycle of the proposed system, the compressed air after being intercooled is heated at 1000 °C or higher at the solar tower receiver and is used to drive the gas turbine to generate power. The ammonia–water mixture as the working substance of the bottom cycle recovers the waste heat from the gas turbine to generate power. A concise analytical formula of solar-to-electric efficiency of the proposed system is developed. As a result, the peak solar-to-electric efficiency of the proposed system is 27.5% at a gas turbine inlet temperature of 1000 °C under the designed solar direct normal irradiance of 800 W/m2. Compared with a conventional solar power tower plant, the proposed integrated system conserves approximately 69% of consumed water. The results obtained in the current study provide an approach to improve solar-to-electric efficiency and offer a potential to conserve water for solar thermal power plants in arid area.

Shuo Peng; Hui Hong; Hongguang Jin; Zhifeng Wang

2012-01-01T23:59:59.000Z

395

Solar heating system at Quitman County Bank, Marks, Mississippi. Final report  

SciTech Connect

Information is provided on the solar heating system installed in a single story wood frame, cedar exterior, sloped roof building, the Quitman County Bank, a branch of the First National Bank of Clarksdale, Mississippi. It is the first solar system in the geographical area and has promoted much interest. The system has on-site temperature and power measurements readouts. The 468 square feet of Solaron air flat plate collectors provide for 2000 square feet of space heating, an estimated 60% of the heating load. Solar heated air is distributed to the 235 cubic foot rock storage box or to the load (space heating) by a 960 cubic feet per minute air handler unit. A 7.5 ton Carrier air-to-air heat pump with 15 kilowatts of electric booster strips serve as a back-up (auxiliary) to the solar system. Motorized dampers control the direction of airflow and back draft dampers prevent thermal siphoning of conditioned air. The system was turned on in September 1979, and acceptance testing completed in February 1980. This is a Pon Cycle 3 Project with the Government sharing $13,445.00 of the $24,921 Solar Energy System installation cost.

None

1980-06-01T23:59:59.000Z

396

Phenylnaphthalene Derivatives as Heat Transfer Fluids for Concentrating Solar Power: Loop Experiments and Final Report  

SciTech Connect

ORNL and subcontractor Cool Energy completed an investigation of higher-temperature, organic thermal fluids for solar thermal applications. Although static thermal tests showed promising results for 1-phenylnaphthalene, loop testing at temperatures to 450 C showed that the material isomerized at a slow rate. In a loop with a temperature high enough to drive the isomerization, the higher melting point byproducts tended to condense onto cooler surfaces. So, as experienced in loop operation, eventually the internal channels of cooler components such as the waste heat rejection exchanger may become coated or clogged and loop performance will decrease. Thus, pure 1-phenylnaphthalene does not appear to be a fluid that would have a sufficiently long lifetime (years to decades) to be used in a loop at the increased temperatures of interest. Hence a decision was made not to test the ORNL fluid in the loop at Cool Energy Inc. Instead, Cool Energy tested and modeled power conversion from a moderate-temperature solar loop using coupled Stirling engines. Cool Energy analyzed data collected on third and fourth generation SolarHeart Stirling engines operating on a rooftop solar field with a lower temperature (Marlotherm) heat transfer fluid. The operating efficiencies of the Stirling engines were determined at multiple, typical solar conditions, based on data from actual cycle operation. Results highlighted the advantages of inherent thermal energy storage in the power conversion system.

McFarlane, Joanna [ORNL; Bell, Jason R [ORNL; Felde, David K [ORNL; Joseph III, Robert Anthony [ORNL; Qualls, A L [ORNL; Weaver, Samuel P [ORNL

2013-02-01T23:59:59.000Z

397

Research Program - Center for Solar and Thermal Energy Conversion  

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

below. Organic and Hybrid Systems for TE Improving Thermoelectric Efficiency via Low Thermal Boundary Conductance Heat dissipation in Atomic-Scale Junctions A General Strategy to...

398

Thermal Conductivity Enhancement of High Temperature Phase Change Materials for Concentrating Solar Power Plant Applications  

E-Print Network (OSTI)

been heated at solar collection tower, at the temperatureIn the receiver tower, the collected solar radiation heatsfocus and send solar radiation to a receiver tower.

Roshandell, Melina

2013-01-01T23:59:59.000Z

399

Thermal Conductivity of Composites Under Di erent Heating Scenarios  

E-Print Network (OSTI)

Thermal Conductivity of Composites Under Di#11;erent Heating Scenarios H.T. Banks #3; , J.H. Hogan of composites under three di#11;erent heating scenarios: (i) a laser pulse heat source, (ii) a preheated composite sample, and (iii) a continuous heat source. 1 Introduction Adhesives such as epoxies, gels

400

Solar Water Heating Requirement for New Residential Construction |  

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

Water Heating Requirement for New Residential Construction Water Heating Requirement for New Residential Construction Solar Water Heating Requirement for New Residential Construction < Back Eligibility Residential Savings Category Heating & Cooling Solar Water Heating Program Info State Hawaii Program Type Building Energy Code Provider Hawaii Department of Business, Economic Development, and Tourism In June 2008, Hawaii enacted legislation, [http://www.capitol.hawaii.gov/session2008/bills/SB644_CD1_.htm SB 644], with the intent to require solar water-heating (SWH) systems to be installed on all single-family new home construction, with a few exceptions. This legislation had several errors that were corrected by legislation passed during the 2009 legislative session. In June 2009, HB 1464 was signed by the governor and addressed the errors in the previous

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


401

Evidence for Inhomogeneous Heating in the Solar Wind  

Science Journals Connector (OSTI)

Solar wind observations and magnetohydrodynamic (MHD) simulations are used to probe the nature of turbulence heating. In particular, the electron heat flux, electron temperature, and ion temperature in the solar wind are studied using ACE and Wind data. These heating diagnostics are also compared with MHD simulation estimates of the local dissipation density. Coherent structures, which are sources of inhomogeneity and intermittency in MHD turbulence, are found to be associated with enhancements in every heating-related diagnostic. This supports the hypothesis that significant inhomogeneous heating occurs in the solar wind, connected with current sheets that are dynamically generated by MHD turbulence. Indeed, a subset of these coherent current sheets might be candidates for magnetic reconnection. However, the specific kinetic mechanisms that heat and accelerate particles within these structures require further study.

K. T. Osman; W. H. Matthaeus; A. Greco; S. Servidio

2011-01-01T23:59:59.000Z

402

CONTROL SYSTEM FOR SOLAR HEATING and COOLING  

E-Print Network (OSTI)

Solar Energy Society Meeting, Los Angeles, California, Julysolar in- solation measuring stations in northern and central California (California 94720 August 1975 A control system is being developed that will be capable of operating solar

Dols, C.

2010-01-01T23:59:59.000Z

403

Solar coronal heating by magnetosonic waves  

Science Journals Connector (OSTI)

......presence of MHD waves in the solar corona. Saba Strong...data acquired by the Solar Maximum Mission (SMM...emission lines came the SOHO project (Doyle, Teriaca Banerjee...calculated the Alfven wave energy flux density as for...and a combination of Solar Untraviolet Measurements......

E. R. Pekünlü; Ö. Çakirli; E. Özetken

2001-09-11T23:59:59.000Z

404

Thermal response of a flat heat pipe sandwich structure to a localized heat flux  

E-Print Network (OSTI)

metal foam wick and distilled water as the working fluid. Heat was applied via a propane torch and radiative heat transfer. A novel method was developed to estimate experimentally, the heat flux distribution rights reserved. Keywords: Flat heat pipe; Thermal spreader; Heat transfer; Evaporator; Condenser 1

Wadley, Haydn

405

An approach to energy saving assessment of solar assisted heat pumps for swimming pool water heating  

Science Journals Connector (OSTI)

A steady state off-design model of a Water Solar Assisted Heat Pump (W-SAHP) and the results of monthly based averaged simulations are presented. The W-SAHP system is arranged with a commercial water-to-water heat pump, coupled with unglazed flat plate solar collectors. The study is purposely developed for swimming pools, however most of the analysis criteria and outcomes are valid for any building (user) having hot water needs. Calculations are made for given thermal load and user operating temperatures with reference to the climatic data of all Italian Municipalities, that is degree days (DD) in the range from 700 to 3000, altitude from 0 to 1500 m (above sea level), and latitude from 36.5°N to 46.3°N. The primary energy saving capability of the W-SAHP solution, compared to a traditional gas-boiler plant, is analyzed as a function of the DD index of each site. Despite the large spread of climatic and altitude data, the results show that the W-SAHP performance is usually well correlated to DD, which can therefore be assumed as the main independent variable for the energy saving assessment of these systems, and make the results easily extended to other possible geographical locations.

Luca A. Tagliafico; Federico Scarpa; Giulio Tagliafico; Federico Valsuani

2012-01-01T23:59:59.000Z

406

Optimization in solar heating/photovoltaic systems. Master's thesis  

SciTech Connect

This thesis is a design of an alternative system which may provide heating to the Naval Postgraduate School swimming pool. Particularly, it is a solar heating/photovoltaic system designed for a better efficiency and less cost of installation and maintenance. Principles of heat transfer, control and fluid dynamics theory are used for the determination of this heating system elements. The feasibility of its installation and use is analyzed.

Vourazelis, D.G.

1990-12-01T23:59:59.000Z

407

Parabolic-Trough Solar Water Heating--FTA, 022798m FTA trough  

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

Parabolic-trough solar water heating is Parabolic-trough solar water heating is a well-proven technology that directly sub- stitutes renewable energy for conventional energy in water heating. Parabolic-trough collectors can also drive absorption cooling systems or other equipment that runs off a thermal load. There is considerable potential for using these technologies at Federal facil- ities in the Southwestern United States or other areas with high direct-beam solar radi- ation. Facilities such as jails, hospitals, and barracks that consistently use large volumes of hot water are particularly good candi- dates. Use of parabolic-trough systems helps Federal facilities comply with Executive Order 12902's directive to reduce energy use by 30% by 2005 and advance other efforts to get the Federal government to set a good

408

#AskEnergySaver: Home Water Heating | Department of Energy  

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

electric systems, like solar electric and onsite wind power, have substantial energy loss when converting electricity to heat. With solar thermal water heating, there are a...

409

A PASSIVE SOLAR HEATING SYSTEM COMBINED WITH A HEATPUMP AND A LONG TERM HEAT STORAGE  

Science Journals Connector (OSTI)

ABSTRACT This paper describes the design and the first preliminary performance results of a sunspace attached to an existent building, combined with a heatpump and a long term heat storage. The aim of the project is to study the possibility of storing the excess heat of the passive system in a low temperature storage, which is used as cold source for a heatpump. The advantages of the presented system are that the energy flows in the passive solar system can be controlled and that a rather high solar fraction can be obtained (around .7 to .8 in the climate of Ispra). KEYWORDS Passive solar energy, heat pump, heat storage

D. van Hattem; R. Colombo; P. Actis-Dato

1988-01-01T23:59:59.000Z

410

Ocala Utility Services - Solar Hot Water Heating Rebate Program |  

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

You are here You are here Home » Ocala Utility Services - Solar Hot Water Heating Rebate Program Ocala Utility Services - Solar Hot Water Heating Rebate Program < Back Eligibility Residential Savings Category Heating & Cooling Solar Water Heating Maximum Rebate One rebate per account Program Info State Florida Program Type Utility Rebate Program Rebate Amount $450 per system Provider Ocala Utility Services The Solar Water Heater Rebate Program is offered to residential retail electric customers by the City of Ocala Utility Services. Interested customers must complete an application and receive approval from the Ocala Utility Services before installing equipment. The application can be found on the [http://www.ocalafl.org/COO3.aspx?id=947 program web site.] The system must be installed by a licensed Florida contractor on the customer's

411

Southwest Gas Corporation - Smarter Greener Better Solar Water Heating  

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

Southwest Gas Corporation - Smarter Greener Better Solar Water Southwest Gas Corporation - Smarter Greener Better Solar Water Heating Program Southwest Gas Corporation - Smarter Greener Better Solar Water Heating Program < Back Eligibility Commercial Local Government Nonprofit Residential State Government Savings Category Heating & Cooling Solar Water Heating Maximum Rebate Residential: 30% of system cost or $3,000, whichever is less Small Commercial: 30% of system cost or $7,500, whichever is less Schools, Religious, Non-profit, Public Facilities and Civic and County Facilities: 50% of system cost or $30,000, whichever is less Program Info State Nevada Program Type Utility Rebate Program Rebate Amount Residential and Small Business: $14.50 per therm Schools, Religious, Non-profit, Public Facilities and Civic and County

412

Southwest Gas Corporation - Smarter Greener Better Solar Water Heating  

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

Southwest Gas Corporation - Smarter Greener Better Solar Water Southwest Gas Corporation - Smarter Greener Better Solar Water Heating Program (Arizona) Southwest Gas Corporation - Smarter Greener Better Solar Water Heating Program (Arizona) < Back Eligibility Commercial Fed. Government General Public/Consumer Industrial Local Government Multi-Family Residential Nonprofit Residential Schools State Government Savings Category Heating & Cooling Solar Swimming Pool Heaters Water Heating Maximum Rebate 50% of system cost Program Info State Nevada Program Type Utility Rebate Program Rebate Amount $15.00/therm Provider Southwest Gas Corporation '''''Note: Effective July 15, 2013, Southwest Gas is no longer accepting applications for the current program year. Systems installed during the current program year will not be eligible for a rebate in the next program

413

Solar Heating Test Design Facility for Bulk PCM Storage  

Science Journals Connector (OSTI)

This experimentation, conducted by the “Centre d’Energétique de l’ENSMP”, was designed to analyze the interest of bulk PCM storage centralized in a real water active solar heating system consisting of a low tempe...

P. Achard; B. Amann; D. Mayer

1984-01-01T23:59:59.000Z

414

Questar Gas- Residential Solar Assisted Water Heating Rebate Program  

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

Questar gas provides incentives for residential customers to purchase and install solar water heating systems on their homes. Rebates of $750 per system are provided to customers of Questar who...

415

Questar Gas- Residential Solar Assisted Water Heating Rebate Program (Idaho)  

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

Questar gas provides incentives for residential customers to purchase and install solar water heating systems on their homes. Rebates of $750 per system are provided to customers of Questar who...

416

GreyStone Power- Solar Water Heating Program  

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

GreyStone Power, an electricity cooperative serving 103,000 customers in Georgia, introduced a solar water heating rebate in March 2009. This $500 rebate is available to customers regardless of...

417

Ion Cyclotron Waves, Instabilities and Solar Wind Heating  

Science Journals Connector (OSTI)

The effect of alpha particles on the dispersion relation of ion cyclotron waves and its influence on the heating of the solar wind plasma are investigated. ... can dramatically change the dispersion relation of i...

Xing Li; Shadia R. Habbal

2000-01-01T23:59:59.000Z

418

Ion cyclotron waves, instabilities and solar wind heating  

Science Journals Connector (OSTI)

The effect of alpha particles on the dispersion relation of ion cyclotron waves and its influence on the heating of the solar wind plasma are investigated. ... can dramatically change the dispersion relation of i...

Xing Li; Shadia R. Habbal

1999-12-01T23:59:59.000Z

419

Solar heating system installed at Jackson, Tennessee. Final report  

SciTech Connect

The solar energy heating system installed at the Coca-Cola Bottling Works in Jackson, Tennessee is described. The system consists of 9480 square feet of Owens-Illinois evacuated tubular solar collectors with attached specular cylindrical reflectors and will provide space heating for the 70,000 square foot production building in the winter, and hot water for the bottle washing equipment the remainder of the year. Component specifications and engineering drawings are included. (WHK)

None

1980-10-01T23:59:59.000Z

420

Residential solar-absorption chiller thermal dynamics  

SciTech Connect

Research is reported on the transient performance of a commercial residential 3 ton lithium bromide-water absorption chiller designed for solar firing. Emphasis was placed on separating the chiller response from that of the entire test facility so that its transient response could solely be observed and quantified. It was found that the entire system time response and thermal capacitance has a major impact on performance degradation due to transient operation. Tests run to ascertain computer algorithms which simulate system isolated chiller performance, revealed processes hitherto undocumented. Transient operation is simulated by three distinct algorithms associated with the three phases of chiller operation. The first phase is start up time. It was revealed during testing that the time required to reach steady state performance values, when the chiller was turned on, was a linear function of steady state water supply temperatures. The second phase is quasi steady state performance. Test facility's performance compared favorably with the manufacturer's published data. The third phase is the extra capacity produced during spin down. Spin down occurs when the hot water supply pump is turned off while the other system pumps remain operating for a few minutes, thus allowing extra chiller capacity to be realized. The computer algorithms were used to generate plots which show the operational surface of an isolated absorption chiller subjected to off design and transient operation.

Guertin, J.M.; Wood, B.D.; McNeill, B.W.

1981-03-01T23:59:59.000Z

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


421

Molten Salt-Carbon Nanotube Thermal Energy Storage for Concentrating Solar Power Systems  

Office of Scientific and Technical Information (OSTI)

Molten Salt-Carbon Nanotube Thermal Energy Storage for Concentrating Solar Power Systems Molten Salt-Carbon Nanotube Thermal Energy Storage for Concentrating Solar Power Systems Final Report March 31, 2012 Michael Schuller, Frank Little, Darren Malik, Matt Betts, Qian Shao, Jun Luo, Wan Zhong, Sandhya Shankar, Ashwin Padmanaban The Space Engineering Research Center Texas Engineering Experiment Station Texas A&M University Abstract We demonstrated that adding nanoparticles to a molten salt would increase its utility as a thermal energy storage medium for a concentrating solar power system. Specifically, we demonstrated that we could increase the specific heat of nitrate and carbonate salts containing 1% or less of alumina nanoparticles. We fabricated the composite materials using both evaporative and air drying methods. We tested several thermophysical properties of the composite materials,

422

Converting the Sun's Heat to Gasoline Solar Fuel Corporation is a clean tech company transforming the way gasoline, diesel and hydrogen fuels  

E-Print Network (OSTI)

Converting the Sun's Heat to Gasoline Solar Fuel Corporation is a clean tech company transforming the way gasoline, diesel and hydrogen fuels are created and produced. The company has a proprietary technology for converting solar thermal en- ergy (the sun's heat) to fuel (e.g., gasoline, diesel, hydrogen

Jawitz, James W.

423

Solar  

Science Journals Connector (OSTI)

With sharp drop in costs for photovoltaic and solar thermal processes, solar energy has become more attractive alternative ... Almost half the total was earmarked for PV and solar thermal projects. ...

WARD WORTHY

1991-06-17T23:59:59.000Z

424

Reduction in the intensity of solar X-ray emission in the 2- to 15-keV photon energy range and heating of the solar corona  

SciTech Connect

The time profiles of the energy spectra of low-intensity flares and the structure of the thermal background of the soft X-ray component of solar corona emission over the period of January-February, 2003, are investigated using the data of the RHESSI project. A reduction in the intensity of X-ray emission of the solar flares and the corona thermal background in the 2- to 15-keV photon energy range is revealed. The RHESSI data are compared with the data from the Interball-Geotail project. A new mechanism of solar corona heating is proposed on the basis of the results obtained.

Mirzoeva, I. K., E-mail: colombo2006@mail.ru [Russian Academy of Sciences, Space Research Institute (Russian Federation)

2013-04-15T23:59:59.000Z

425

Solar thermal power plants for the Spanish electricity market  

Science Journals Connector (OSTI)

Solar thermal power plants are at present the cheapest technology for solar electricity production. At good sites Levelised Electricity Costs (LEC) of 11 Ct/kWh have been achieved in commercially operated power plants. Economy of scale and further technical improvements will reduce the LEC for future projects. On the 27th of March 2004 in Spain the existing feed-in-law has been modified in order to support the erection of solar thermal power plants and thus make use of the huge solar potential of Spain. A payment of approx. 21 Ct/kWh, guaranteed for the first 25 years of operation, makes the erection and operation of solar thermal power plants very profitable for possible investors on the Spanish peninsula. This paper will present the present situation in Spain and the planned power plant projects. For one specific project the set-up is presented in more detail.

M. Eck; F. Rueda; S. Kronshage; C. Schillings; F. Trieb; E. Zarza

2007-01-01T23:59:59.000Z

426

Sustainable Energy Resources for Consumers Webinar on Solar Water Heating Transcript  

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

Video recording transcript of a Webinar on Nov. 16, 2010 about residential solar water heating applications

427

Sandia National Laboratories: National Solar Thermal Test Facility  

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

Test Facility (NSTTF) Operated by Sandia National Laboratories for the U.S. Department of Energy (DOE), the National Solar Thermal Test Facility (NSTTF) is the only test facility...

428

Photoswitchable Molecular Rings for Solar-Thermal Energy Storage  

Science Journals Connector (OSTI)

Photoswitchable Molecular Rings for Solar-Thermal Energy Storage ... Ground-state energy barriers along the NN torsional coordinates were also computed, along with excitation energies and intensities for the species that can contribute to the photostationary state. ...

E. Durgun; Jeffrey C. Grossman

2013-03-04T23:59:59.000Z

429

Marshall Municipal Utilities- Solar Thermal Water Heater Rebate Program  

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

Marshall Municipal Utilities (MMU) offers residential customers rebates for installing a ENERGY STAR Solar Thermal Water Heater. Rebates are based on the size of the system; MMU offers $20 per...

430

Materials selection for thermal comfort in passive solar buildings  

Science Journals Connector (OSTI)

This paper presents the results of a combined analytical, computational, and experimental study of the key parameters for selecting affordable materials and designing for thermal comfort in passive solar build...

J. M. Thomas; S. Algohary; F. Hammad; W. O. Soboyejo

2006-11-01T23:59:59.000Z

431

Heat Storage for Vapour Based Solar Concentrators.  

E-Print Network (OSTI)

?? In a world where energy demand, population, and environmental concern are increasing by the day, the use of solar energy and other renewable energy… (more)

Hoff, Catharina

2012-01-01T23:59:59.000Z

432

CONTROL SYSTEM FOR SOLAR HEATING and COOLING  

E-Print Network (OSTI)

sensors and control valves used in our generalized experimental system. The experimental solarsensors are remotely located at critical (in terms of decision-making) locations in the solar

Dols, C.

2010-01-01T23:59:59.000Z

433

Performance of a Thermally Stable Polyaromatic Hydrocarbon in a Simulated Concentrating Solar Power Loop  

SciTech Connect

Polyaromatic hydrocarbon thermal fluids showing thermally stability to 600 C have been tested for solar thermal-power applications. Although static thermal tests showed promising results for 1-phenylnaphthalene, loop testing at temperatures to 450 C indicated that the fluid isomerized and degraded at a slow rate. In a loop with a temperature high enough to drive the isomerization, the higher melting point byproducts tended to condense onto cooler surfaces. So, as experienced in loop operation, eventually the internal channels of cooler components in trough solar electric generating systems, such as the waste heat rejection exchanger, may become coated or clogged affecting loop performance. Thus, pure 1-phenylnaphthalene, without addition of stabilizers, does not appear to be a fluid that would have a sufficiently long lifetime (years to decades) to be used in a loop at the temperatures greater than 500 C. The performance of a concentrating solar loop using high temperature fluids was modeled based on the National Renewable Laboratory Solar Advisory Model. It was determined that a solar-to-electricity efficiency of up to 30% and a capacity factor of near 60% could be achieved using a high efficiency collector and 12 h thermal energy storage.

McFarlane, Joanna [ORNL] [ORNL; Bell, Jason R [ORNL] [ORNL; Felde, David K [ORNL] [ORNL; Joseph III, Robert Anthony [ORNL] [ORNL; Qualls, A L [ORNL] [ORNL; Weaver, Samuel P [ORNL] [ORNL

2014-01-01T23:59:59.000Z

434

California Solar Initiative - Low-Income Solar Water Heating Rebate Program  

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

You are here You are here Home » California Solar Initiative - Low-Income Solar Water Heating Rebate Program California Solar Initiative - Low-Income Solar Water Heating Rebate Program < Back Eligibility Low-Income Residential Multi-Family Residential Savings Category Heating & Cooling Solar Water Heating Maximum Rebate Single-Family Low-Income: $3,750 Multi-Family Low-Income: $500,000 Program Info Funding Source Ratepayer Funds Start Date 3/29/2012 State California Program Type State Rebate Program Rebate Amount Step 1 Incentive Rates (contact utility to determine current incentive levels): Single-Family Low-Income: $25.64 per therm displaced Multi-Family Low-Income: $19.23 per therm displaced The California Public Utilities Commission (CPUC) voted in October 2011 to

435

PERFORMANCE OF A CONCENTRATING PHOTOVOLTAIC/THERMAL SOLAR COLLECTOR  

E-Print Network (OSTI)

increased solar energy conversion and potential cost benefits (Fujisawa and Tani, 1997, 2001, Huang et alPERFORMANCE OF A CONCENTRATING PHOTOVOLTAIC/THERMAL SOLAR COLLECTOR Joe S Coventry Centre for Sustainable Energy Systems, Australian National University, Canberra, 0200, Australia +612 6125 3976, +612

436

Thermal efficiency of single-pass solar air collector  

SciTech Connect

Efficiency of a finned single-pass solar air collector was studied. This paper presents the experimental study to investigate the effect of solar radiation and mass flow rate on efficiency. The fins attached at the back of absorbing plate to improve the thermal efficiency of the system. The results show that the efficiency is increased proportional to solar radiation and mass flow rate. Efficiency of the collector archived steady state when reach to certain value or can be said the maximum performance.

Ibrahim, Zamry; Ibarahim, Zahari; Yatim, Baharudin [School of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor Darul Ehsan (Malaysia); Ruslan, Mohd Hafidz [Solar Energy Research Institute (SERI), Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor Darul Ehsan (Malaysia)

2013-11-27T23:59:59.000Z

437

Transient hydrodynamic, heat and mass transfer in a salinity gradient solar pond: A numerical study  

Science Journals Connector (OSTI)

Abstract The impoverishment of our planet in non-renewable energies has incited researchers to design salinity gradient solar ponds to collect and store solar energy at a lower cost. It is in this context that the present research work lies to focus on the numerical study of the transient hydrodynamic, heat and mass transfer in a salinity gradient solar pond. The problem is tackled using the dimensionless governing equations of Navier–Stokes, thermal energy and mass transfer, which are solved numerically by finite-volume method to provide the temperature, concentration and velocity fields in transient regime. The pond is filled with salty water of various salinities to form three zones of salty water: Upper Convective Zone (UCZ), Non-Convective Zone (NCZ) and Lower Convective Zone (LCZ). To prevent convective movements induced by the internal heating of salty water due to solar radiation absorption, a salinity gradient is used in the solar pond. Representative results illustrating the influence of internal Rayleigh number on the thermal performance of the pond and the effect of the aspect ratio on the distribution of temperature and velocity fields in the salinity gradient solar pond (SGSP) are discussed. In addition, results for the transient average temperature of UCZ and LCZ are presented and discussed for various parametric conditions.

Ridha Boudhiaf; Mounir Baccar

2014-01-01T23:59:59.000Z

438

Influences of ambient air speed and internal heat load on the performance of solar chimney in the tropics  

Science Journals Connector (OSTI)

Abstract Solar chimney is a combination of solar assisted stack and wind driven ventilation where air in the solar chimney expands under heating from solar irradiance and being relatively lighter, rises out from the chimney outlets, drawing the cooler air into the building through the fenestrations. This pull effect is complemented further by the push effect from the outdoor ambient wind. The study of solar chimney system within the zero energy building in tropical Singapore aims to determine the effects of ambient air speed and internal heat load on the thermal environment of the solar chimney ducts and classroom’s interior. Experimental and computational results show that high ambient air speed greater than 2.00 m/s improves the air speed within the solar chimney ducts; both low and high ambient air speeds are found to improve the classroom’s interior air speed. However, the significance of ambient air speed drops when solar irradiance is greater than 700 W/m2. Furthermore, under the tropical weather conditions of high solar irradiance and low ambient air speed, cross ventilation performs better compared to solar chimney; hence, solar chimney is recommended to be employed under zero ambient air speed. Lastly, results show that the influences of internal heat load on the air temperature and speed within solar chimney ducts as well as classroom’s interior are limited.

Alex Yong Kwang Tan; Nyuk Hien Wong

2014-01-01T23:59:59.000Z

439

A solid?state solar?powered heat transfer device  

Science Journals Connector (OSTI)

A solar?powered solid?state heat transferdevice capable of operating in either a refrigeration or a heat?pump mode is proposed. The device’s operation is based on the combined utilization of the photovoltaic and Peltier effects.

Milivoj Beli?; Joel I. Gersten

1979-01-01T23:59:59.000Z

440

10 MWe Solar Thermal Central Receiver Pilot Plant Total Capital Cost  

Science Journals Connector (OSTI)

A cost analysis of the 10MWe Solar One Thermal Central Receiver Plant near Barstow, California, ... is presented to help predict costs of future solar thermal central receiver plants. In this paper, the Solar One...

H. F. Norris

1985-01-01T23:59:59.000Z

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


441

Thermal storage module for solar dynamic receivers  

DOE Patents (OSTI)

A thermal energy storage system comprising a germanium phase change material and a graphite container.

Beatty, Ronald L. (Farragut, TN); Lauf, Robert J. (Oak Ridge, TN)

1991-01-01T23:59:59.000Z

442

Solar Water Heating FTA, 024922m FTA solwat heat.pdf  

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

Federal Technology Alert A series of energy efficient technology guides prepared by the New Technology Demonstration Program Solar Water Heating Well-Proven Technology Pays Off in Several Situations Solar water heating is a well-proven and readily available technology that directly substitutes renewable energy for conventional water heating. This Federal Technology Alert (FTA) of the Federal Energy Management Program (FEMP), one of a series on new energy- efficient technologies and renewable energy technologies, describes the various types of solar water heating systems, the situations in which solar water heating is likely to be cost- effective, considerations in selecting and designing a system, and basic steps for installing a system. There are a variety of different types

443

Solar Water Heating System Maintenance and Repair | Department of Energy  

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

Water Heating System Maintenance and Repair Water Heating System Maintenance and Repair Solar Water Heating System Maintenance and Repair May 30, 2012 - 2:35pm Addthis Rooftop solar water heaters need regular maintenance to operate at peak efficiency. | Photo from iStockphoto.com Rooftop solar water heaters need regular maintenance to operate at peak efficiency. | Photo from iStockphoto.com Solar energy systems require periodic inspections and routine maintenance to keep them operating efficiently. Also, from time to time, components may need repair or replacement. You should also take steps to prevent scaling, corrosion, and freezing. You might be able to handle some of the inspections and maintenance tasks on your own, but others may require a qualified technician. Ask for a cost estimate in writing before having any work done. For some systems, it may

444

Modeling and co-simulation of a parabolic trough solar plant for industrial process heat  

Science Journals Connector (OSTI)

In the present paper a tri-dimensional non-linear dynamic thermohydraulic model of a parabolic trough collector was developed in the high-level acausal object-oriented language Modelica and coupled to a solar industrial process heat plant modeled in TRNSYS. The integration is performed in an innovative co-simulation environment based on the TLK interconnect software connector middleware. A discrete Monte Carlo ray-tracing model was developed in SolTrace to compute the solar radiation heterogeneous local concentration ratio in the parabolic trough collector absorber outer surface. The obtained results show that the efficiency predicted by the model agrees well with experimental data with a root mean square error of 1.2%. The dynamic performance was validated with experimental data from the Acurex solar field, located at the Plataforma Solar de Almeria, South-East Spain, and presents a good agreement. An optimization of the IST collector mass flow rate was performed based on the minimization of an energy loss cost function showing an optimal mass flow rate of 0.22 kg/s m2. A parametric analysis showed the influence on collector efficiency of several design properties, such as the absorber emittance and absorptance. Different parabolic trough solar field model structures were compared showing that, from a thermal point of view, the one-dimensional model performs close to the bi-dimensional. Co-simulations conducted on a reference industrial process heat scenario on a South European climate show an annual solar fraction of 67% for a solar plant consisting on a solar field of 1000 m2, with thermal energy storage, coupled to a continuous industrial thermal demand of 100 kW.

R. Silva; M. Pérez; A. Fernández-Garcia

2013-01-01T23:59:59.000Z

445

Thermal Hydraulic Optimization of Nuclear Systems [Heat Transfer and Fluid  

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

Thermal Hydraulic Thermal Hydraulic Optimization of Nuclear Systems Capabilities Engineering Computation and Design Engineering and Structural Mechanics Systems/Component Design, Engineering and Drafting Heat Transfer and Fluid Mechanics Overview Thermal Hydraulic Optimization of Nuclear Systems Underhood Thermal Management Combustion Simulations Advanced Model and Methodology Development Multi-physics Reactor Performance and Safety Simulations Other Capabilities Work with Argonne Contact us For Employees Site Map Help Join us on Facebook Follow us on Twitter NE on Flickr Heat Transfer and Fluid Mechanics Bookmark and Share Thermal Hydraulic Optimization of Nuclear Systems Accelerator Driven Test Facility Target Accelerator Driven Test Facility Target. Click on image to view larger

446

Modelling the vertical heat exchanger in thermal basin  

Science Journals Connector (OSTI)

In geographical area characterize by specific geological conformations such as the Viterbo area which comprehend active volcanic basins, it is difficult to use conventional geothermal plants. In fact the area presents at shallow depths thermal falde ... Keywords: heat, thermal aquifer, thermal energy

Maurizio Carlini; Sonia Castellucci

2007-06-01T23:59:59.000Z

447

High temperature latent heat thermal energy storage: Phase change materials, design considerations and performance enhancement techniques  

Science Journals Connector (OSTI)

Abstract A very common problem in solar power generation plants and various other industrial processes is the existing gap between the period of thermal energy availability and its period of usage. This situation creates the need for an effective method by which excess heat can be stored for later use. Latent heat thermal energy storage is one of the most efficient ways of storing thermal energy through which the disparity between energy production or availability and consumption can be corrected, thus avoiding wastage and increasing the process efficiency. This paper reviews a series of phase change materials, mainly inorganic salt compositions and metallic alloys, which could potentially be used as storage media in a high temperature (above 300 °C) latent heat storage system, seeking to serve the reader as a comprehensive thermophysical properties database to facilitate the material selection task for high temperature applications. Widespread utilization of latent heat storage systems has been held back by the poor thermal conductivity and some other inherent drawbacks of the use of PCMs; this paper reviews several heat transfer and performance enhancement techniques proposed in the literature and discusses a number of design considerations that must be taken into account aiming to provide a broad overview for the design of high temperature latent heat based thermal energy storage systems.

Bruno Cárdenas; Noel León

2013-01-01T23:59:59.000Z

448

Performance of the Second Generation Solar Heating System in the Solar House of the Eindhoven University of Technology  

Science Journals Connector (OSTI)

Summer 1981 a new solar heating system has been installed in the Solar House at the E.U.T. The principal features of the system are Philips VTR 261 evacuated tube collectors, integration of the auxiliary heate...

R. W. G. Bisschops; C. W. J. van Koppen…

1984-01-01T23:59:59.000Z

449

Investigation of a Novel Solar Assisted Water Heating System with Enhanced Energy Yield for Buildings  

E-Print Network (OSTI)

simulation and experimental verification. The unique characteristic of such system consists in the integrated loop heat pipe and heat pump unit (LHP-HP), which was proposed to improve solar photovoltaic (PV) generation, capture additional solar heat...

Zhang, X.; Zhao, X.; Xu, J.; Yu, X.

2012-01-01T23:59:59.000Z

450

Experimental investigation on system with combination of ground-source heat pump and solar collector  

Science Journals Connector (OSTI)

This paper presents the heating performance and energy distribution of a system with the combination of ground-source heat pump and solar collector or a solar-assisted ground-source heat pump system (SAGSHPS) by ...

Tao Hu ? ?; Jialing Zhu ???; Wei Zhang ? ?

2013-06-01T23:59:59.000Z

451

Development of a Combined Hot Water and Sorption Store for Solar Thermal Systems  

Science Journals Connector (OSTI)

Abstract The motivation for the development of a combined hot water and sorption store is to complement the advantages and to reduce the disadvantages of the two particular storage technologies. Hot water stores offer high heat supply rates but are particularly suitable for short term storage due to heat losses whereas for a sorption store the power drain is low but it shows the advantage of a high storage density and long-term heat storage almost without losses. The combined hot water and sorption store has been developed using the example of a solar thermal system for domestic hot water preparation. The store consists of a radial stream adsorber integrated in a hot water store. Adsorption and desorption experiments in laboratory have been conducted with a prototype store in full-scale. A numerical model of the combined store has been developed and annual simulations of a solar thermal system including a combined hot water and sorption store have been conducted. The thermal performance has been compared to those of reference hot water stores. The results of the experimental and numerical investigations will be presented in this paper and the benefit of a combined hot water and sorption store applied for solar thermal systems will be discussed.

Rebecca Weber; Henner Kerskes; Harald Drück

2014-01-01T23:59:59.000Z

452

Energy-Dependent Timing of Thermal Emission in Solar Flares  

Science Journals Connector (OSTI)

We report solar flare plasma to be multi-thermal in nature based on the theoretical model and study of the energy-dependent timing of thermal emission in ten M-class flares. We ... observed by the Si detector of ...

Rajmal Jain; Arun Kumar Awasthi; Arvind Singh Rajpurohit…

2011-05-01T23:59:59.000Z

453

Sandia National Laboratories: solar thermal electric technologies  

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

Plan Webinar Wednesday, Jan. 14 Sandian Presents on PV Failure Analysis at European PV Solar Energy Conference and Exhibition (EU PVSC) EC Top Publications Design and Analysis...

454

Design of a solar thermal collector simulator.  

E-Print Network (OSTI)

??The recent increased interest in renewable energy has created a need for research in the area of solar technology. This has brought about many new… (more)

Bolton, Kirk G.

2009-01-01T23:59:59.000Z

455

Relationship between Solar Wind and Coronal Heating: Scaling Laws from Solar X-Rays  

Science Journals Connector (OSTI)

Pevtsov et al. recently showed that the luminosity of solar and stellar X-rays from closed magnetic structures scales nearly linearly with magnetic flux over 12 decades. We show here that the total power available to accelerate the solar wind also scales linearly with magnetic flux, provided that its sources inject a roughly constant energy per particle prior to losses from heat conducted by electrons into radiation. Using a recently developed model of the solar wind energy source and particle source, we calculate the available solar wind power and convert it into an equivalent X-ray luminosity to explore whether the same process that drives solar wind may also power coronal heating. The quantitative results agree remarkably well with the Pevtsov et al. X-ray observations and with GOES X-ray observations over almost two solar cycles from 1985 to 2004. The model for the solar wind energy and particle source relies on the continual reconfiguration of the supergranular network through the emergence of small bipolar or more complex closed magnetic fields. This naturally leads to an energy flux proportional to field strength on large-scale field structures with field strengths larger than the emerging flux. We conclude that the sources of energy for the solar wind and coronal heating are linked, likely through the emergence of new magnetic flux that continually reconfigures large-scale solar magnetic fields and powers and heats the corona.

N. A. Schwadron; D. J. McComas; C. DeForest

2006-01-01T23:59:59.000Z

456

Modeling and Simulation of Solar Chimney Power Plant with and without the Effect of Thermal Energy Storage Systems.  

E-Print Network (OSTI)

??A solar updraft tower power plant – sometimes also called 'solar chimney' or just ‘solar tower’ – is a solar thermal power plant utilizing a… (more)

Daba, Robera

2011-01-01T23:59:59.000Z

457

Modeling The Potential For Thermal Concentrating Solar Power Technologies  

SciTech Connect

In this paper we explore the tradeoffs between thermal storage capacity, cost, and other system parameters in order to examine possible evolutionary pathways for thermal Concen-trating Solar Power (CSP) technologies. A representation of CSP performance that is suit-able for incorporation into economic modeling tools is developed. We find that, as the fraction of electricity supplied by CSP technologies grows, the application of thermal CSP technologies might progress from current hybrid plants, to plants with a modest amount of thermal storage, and potentially even to plants with sufficient thermal storage to provide base load generation capacity. The representation of CSP cost and performance developed here was implemented in the ObjECTS MiniCAM long-term integrated assessment model. Datasets for global solar resource characteristics as applied to CSP technology were also developed. The regional and global potential of thermal CSP technologies is examined.

Zhang, Yabei; Smith, Steven J.; Kyle, G. Page; Stackhouse, Jr., Paul W.

2010-10-25T23:59:59.000Z

458

Use of Renewable Energy in Buildings: Experiences With Solar Thermal Utilization  

E-Print Network (OSTI)

Solar energy is receiving much more attention in building energy systems in recent years. Solar thermal utilization should be based on the integration of solar collectors into buildings. The facades of buildings can be important solar collectors...

Wang, R.; Zhai, X.

2006-01-01T23:59:59.000Z

459

Steam Reforming of Methane Utilizing Solar Heat  

Science Journals Connector (OSTI)

There is a worldwide interest to use solar energy to save or substitute fossil material, which is taken as fuel or chemical feedstock in present technologies. Among the possibilities, which are studied in deta...

W. D. Müller

1987-01-01T23:59:59.000Z

460

Cyclotron Heating of the Solar Corona  

Science Journals Connector (OSTI)

A physical model of the solar transition region and corona is presented, in which plasma flows in rapidly-diverging coronal funnels and holes are described within the framework of a two-fluid model including wave...

Eckart Marsch

1999-01-01T23:59:59.000Z

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


461

Cyclotron Heating of the Solar Corona  

Science Journals Connector (OSTI)

A physical model of the solar transition region and corona is presented, in which plasma flows in rapidly-diverging coronal funnels and holes are described within the framework of a two-fluid model including wave...

Eckart Marsch

462

Direct expansion solar assisted heat pumps – A clean steady state approach for overall performance analysis  

Science Journals Connector (OSTI)

Abstract Traditional thermal solar panel technologies have limited efficiency and the required economic investments make them noncompetitive in the space heating market. The greatest limit to the diffusion of thermal solar systems is the characteristic temperatures they can reach: the strong connection between the user temperature and the collector temperature makes it possible to achieve high thermal (collector) efficiency only at low, often useless, user temperatures. By using solar collectors as thermal exchange units (evaporators) in a heat pump system (direct expansion solar assisted heat pump, DX-SAHP), the overall efficiency greatly increases with a significative cut of the associated investment in terms of pay-back time. In this study, an approach is proposed to the steady state analysis of DX-SAHP, which is based on the simplified inverse Carnot cycle and on the second law efficiency concept. This method, without the need of calculating the refrigerant fluid properties and the detailed processes occurring in the refrigeration device, allows us to link the main features of the plant to its relevant interactions with the surroundings. The very nature of the proposed method makes the relationship explicit and meaningful among all the involved variables. The paper, after the description of the method, presents an explanatory application of this technique by reviewing various aspects of the performance of a typical DX-SAHP in which the savings on primary energy consumption is regarded as the main feature of the plant and highlighted in a monthly averaged analysis. Results agree to those coming from a common standard steady state thermodynamic analysis. The application to a typical DX-SAHP system demonstrates that a mean saved primary energy of about 50% with respect to standard gas burner can be achieved for the same user needs. Such a result is almost independent from the type of flat plate solar panel used (double or single glazed, or even bare panels) as a result of using an optimal collector working temperature.

Luca A. Tagliafico; Federico Scarpa; Federico Valsuani

2014-01-01T23:59:59.000Z

463

Thermal instability in planar solar coronal structures  

Science Journals Connector (OSTI)

Prominentes and filaments are thought to arise as a consequence of a magnetized plasma undergoing thermal instability. Therefore the thermal stability of a magnetized plasma is investigated under coronal condi...

R. A. M. Van der Linden; M. Goossens

1990-01-01T23:59:59.000Z

464

Numerical study on thermal behaviors of a solar chimney incorporated with PCM  

Science Journals Connector (OSTI)

Abstract The thermal behaviors of a solar chimney incorporating with organic phase change material (PCM) RT-42 unit under different heat fluxes are studied in this paper. For the numerical model, effective heat capacity method is employed to analyze the performance of RT-42, while the average thermo-physical property approach is used to describe the PCM/fins component. The PCM behaviors during its melting and solidification processes, absorber surface temperature, mass flow rate, and inlet and outlet air temperature difference have been investigated. The numerical results give good agreements with the experimental results. The comprehensive investigations under various heat fluxes from 100 to 800 W/m2 are carried out by using the verified model. The numerical results show that the performance of the system deteriorates sharply once the heat flux is or lower than 500 W/m2, but not big improvement if the heat flux is higher than 700 W/m2. Therefore, the performance of the system is highly dependent on the solar radiation. The application of high effective thermal conductivity enhancers can further improve the performance of the chimney under lower solar radiation.

Yongcai Li; Shuli Liu

2014-01-01T23:59:59.000Z

465

Application of solar thermal energy to buildings and industry  

SciTech Connect

Flat plate collectors and evacuated tube collectors are described, as are parabolic troughs, Fresnel lenses, and compound parabolic concentrators. Use of solar energy for domestic hot water and for space heating and cooling are discussed. Some useful references and methods of system design and sizing are given. This includes mention of the importance of economic analysis. The suitability of solar energy for industrial use is discussed, and solar ponds, point-focus receivers and central receivers are briefly described. The use of solar energy for process hot water, drying and dehydration, and process steam are examined, industrial process heat field tests by the Department of Energy are discussed, and a solar total energy system in Shenandoah, GA is briefly described. (LEW)

Kutscher, C. F.

1981-05-01T23:59:59.000Z

466

Project Profile: Scattering Solar Thermal Concentrators  

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

Pennsylvania State University, under the 2012 SunShot Concentrating Solar Power (CSP) R&D FOA, is designing and testing a novel solar collector system that relies on stationary optics, avoiding the need for mirror movement. The system is capable of achieving optical performance equal to state-of-the-art parabolic trough systems, but at a lower cost.

467

Solar Water Heating in Dragash Municipality, Kosovo.  

E-Print Network (OSTI)

?? Water has been heated with the sun has almost as long as there have been humans, but itis not until recently that more advanced… (more)

Dahl Hĺkans, Mia

2010-01-01T23:59:59.000Z

468

Optimisation of Solar Collector Area for Solar Thermal Systems  

Science Journals Connector (OSTI)

Invariably solar energy systems are provided with an auxiliary energy source to meet the energy requirements of a system operating at a constant temperature. A technoeconomic analysis has been developed in thi...

N. K. Bansal; Aman Dang

1984-01-01T23:59:59.000Z

469

PV vs. Solar Water Heating- Simple Solar Payback  

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

Solar energy systems hang their hats on payback. Financial payback is as tangible as money in your bank account, while other types of payback—like environmental externalities—are not usually calculated in dollars. There’s no doubt that photovoltaic (PV) and solar hot water (SHW) systems will pay you back. Maybe not as quickly as you’d like, but all systems will significantly offset their cost over their lifetimes. Here we’ll try to answer: Which system will give the quickest return on investment (ROI)?

470

Solar Assisted Heat Pump Systems with Ground Heat Exchanger – Simulation Studies  

Science Journals Connector (OSTI)

Abstract Different concepts of solar assisted heat pump systems with ground heat exchanger are simulated according to IEA SHC Task44/HPP Annex38 reference conditions. Two aspects of the concepts are investigated using TRNSYS simulations. First, the solar impact on system efficiency is assessed by the seasonal performance factor. Second, the solar impact on the possible shortening of the ground heat exchanger is evaluated by the minimum temperature at the ground heat exchanger inlet. The simulation results reveal diverging optimums for the concepts. The direct use of solar energy clearly achieves the best effect on the efficiency improvement. A simple domestic hot water system reaches a seasonal performance factor of 4.5 and solar combi-systems seasonal performance factors up to 6. In contrast, the use of solar energy on the cold side of the heat pump achieves the best effects on the shortening of the ground heat exchanger of up to 20%. Two highly sensitive influences are investigated with the developed transient system model. First, the minimum allowed heat source temperature is varied. Here 1 K equals a variation of 0.25 in the seasonal performance or of around 10% ground heat exchanger length. Second, the ground heat exchanger model is simulated without and with a pre-pipe that improves the transient model behavior. The influence of this pre-pipe on the SPF is small for conventionally designed ground heat exchangers, but of around 2 K for the minimum inlet temperature. Therefore, the dynamic model quality reveals potential to reduce the size of the ground heat exchanger corresponding to investment costs.

Erik Bertram

2014-01-01T23:59:59.000Z

471

Development of a Technology Roadmap for Solar Thermal Cooling in Austria  

Science Journals Connector (OSTI)

Aim of the project was the development of a technology roadmap for solar thermal cooling in Austria involving the relevant market players. The main contents of the technology roadmap are the compilation of the initial position in terms of existing solar thermal cooling plants as well as relevant R&D results, identification of market potentials, technology development and the necessary measures for it. The technology developments are described in short term, medium term, and long term objectives as well as the connected market relevance for Austria and the economic development of this technology. Scenarios for a useful interaction with other sustainable thermal cooling technologies like cooling with district heating are analyzed to clarify the future position of solar thermal cooling in the Austrian energy supply. The market player of this technology reach from component manufactures (solar thermal collector, ab-/-adsorption chillers, ventilation systems, storages, control, etc.), business enterprises (hotels, breweries, laundries, supermarkets, etc.), building developers and consultancy engineers to research institutions, energy agencies and political decision makers. All of these groups were involved in the development of the technology roadmap by expert workshops and interviews.

Anita Preisler; Tim Selke; Hilbert Focke; Nicole Hartl; Georg Geissegger; Erich Podesser; Alexander Thür

2012-01-01T23:59:59.000Z

472

Performance of solid-gas chemical heat pump subsystem of solar dryer  

Science Journals Connector (OSTI)

In this paper the performance of solid-gas chemical heat pump subsystem of solar dryer has been investigated. A thermodynamic analysis is presented to upgrade solar energy with solid-gas chemical heat pump for agriculture drying purpose. A solar assisted ... Keywords: coefficient of performance (COPh), drying, evacuated tubes, overall COPs, solar, solid gas chemical heats pump

M. Ibrahim; W. R. W. Daud; Kamaruzaman Ibrahim; Azami Zaharim; Kamaruzaman Sopian

2010-01-01T23:59:59.000Z

473

Santa Clara Water and Sewer - Solar Water Heating Program | Department of  

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

Water and Sewer - Solar Water Heating Program Water and Sewer - Solar Water Heating Program Santa Clara Water and Sewer - Solar Water Heating Program < Back Eligibility Commercial Local Government Residential Savings Category Heating & Cooling Solar Swimming Pool Heaters Water Heating Commercial Heating & Cooling Program Info State California Program Type Leasing Program Provider City of Santa Clara Water and Sewer Utility In 1975, the City of Santa Clara established the nation's first municipal solar utility. Under the Solar Water Heating Program, the Santa Clara Water and Sewer Utilities Department supplies, installs and maintains solar water heating systems for residents and businesses. In addition, the city has also installed solar energy equipment for a number of its own facilities. Solar equipment is available from the city for heating swimming pools,

474

Low-Cost Solar Water Heating Research and Development Roadmap  

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

Low-Cost Solar Water Heating Low-Cost Solar Water Heating Research and Development Roadmap K. Hudon, T. Merrigan, J. Burch and J. Maguire National Renewable Energy Laboratory Technical Report NREL/TP-5500-54793 August 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 Low-Cost Solar Water Heating Research and Development Roadmap K. Hudon, T. Merrigan, J. Burch and J. Maguire National Renewable Energy Laboratory Prepared under Task No. SHX1.1001 Technical Report NREL/TP-5500-54793 August 2012

475

Low Cost Solar Water Heating R&D  

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

Template Template Low Cost Solar Water Heating R&D Kate Hudon National Renewable Energy Laboratory Kate.hudon@nrel.gov 303-275-3190 April 3, 2013 2 | Building Technologies Office eere.energy.gov Purpose & Objectives Problem Statement: The major market barrier for solar water heaters (SWHs) is installed cost. This project addresses this barrier by working with an industry research partner to evaluate innovative solutions that reduce the installed cost of a SWH by

476

Thermal Modernisation Through Utilisation of Solar Energy  

Science Journals Connector (OSTI)

The paper presents idea of modernization of energy system in buildings through implementation of traditional energy efficiency measures and introduction of modern options of utilization of solar energy systems...

Dorota Chwieduk

2009-01-01T23:59:59.000Z

477

Azobenzene-Functionalized Carbon Nanotubes As High-Energy Density Solar Thermal Fuels  

Science Journals Connector (OSTI)

Azobenzene-Functionalized Carbon Nanotubes As High-Energy Density Solar Thermal Fuels ... Solar thermal fuels, which reversibly store solar energy in molecular bonds, are a tantalizing prospect for clean, renewable, and transportable energy conversion/storage. ... Here we present a novel solar thermal fuel, composed of azobenzene-functionalized carbon nanotubes, with the volumetric energy density of Li-ion batteries. ...

Alexie M. Kolpak; Jeffrey C. Grossman

2011-06-20T23:59:59.000Z

478

Thermal performance evaluation of a solar air heater with and without thermal energy storage  

Science Journals Connector (OSTI)

This communication presents the experimental study and performance analysis of a solar air heater with and without phase change ... found that the output temperature in case with thermal energy storage (TES) is h...

V. V. Tyagi; A. K. Pandey; S. C. Kaushik…

2012-03-01T23:59:59.000Z

479

Barriers to solar process heat projects: Fifteen highly promising (but cancelled) projects  

SciTech Connect

We analyzed technical, economic, and institutional barriers encountered by the solar industry in penetrating the market of solar thermal systems as applied in industry, commerce, and government. The barriers discussed are not theoretical or developed by conducting marketing research surveys of potential users. Rather, they are barriers that precluded implementing actual solar projects for 15 ``highly promising`` prospective users. The efforts to determine their technical and economic feasibility were funded by the US Department of Energy (DOE) Solar Process Heat (SPH) program. Each year, the SPH program conducts a prefeasibility studies activity -- an engineering assessment of the technical and economic feasibility of a solar system for a specific application for a specific end-user. These studies also assess institutional issues that impact the feasibility of the proposed project and develop an action plan for the project`s implementation. In FY 1991 and FY 1992, the program funded a total of 11 studies in which solar projects were investigated for 21 potential users. Of these 21 potential users, only three have made firm commitments to acquire solar systems, yielding a 14% success rate (decisions by three other companies are still pending). The low success rate is disappointing because the solar companies had complete freedom to select ``highly promising`` potential users. We therefore evaluated the reasons for the low success rate and the implications for market penetration.

Carwile, C. [USDOE, Washington, DC (United States). Office of Industrial Technologies] [USDOE, Washington, DC (United States). Office of Industrial Technologies; Hewett, R. [National Renewable Energy Lab., Golden, CO (United States)] [National Renewable Energy Lab., Golden, CO (United States)

1994-10-01T23:59:59.000Z

480

Design implications and potentials of passive solar heating in higher density communities: the Lykovrissi Solar Village  

SciTech Connect

Carefully analyzed building density, massing, and orientation become critical if solar access to the building is to be maintained. Even more carefully thought out building organization and room planning is critical if solar access to the apartment is to be maintained. Finally, careful material and component selection and placement, as well as window control system design is critical if solar access (heating) for the individual is to be maintained. The prerequisite guidelines necessary to ensure this completed solar access were established for the design of the Lykovrissi Solar Village now under construction near Athens. Fulfilling a cooperative agreement of 1978 between Germany and Greece, a community of rowhouses and three-to-six story multi-family units have been designed to provide energy efficient and solar assisted housing for 431 low income families, with a clear perspective on comparing solar systems for future subsidized housing.

Loftness, V. (INTERATOM, Bergisch Gladbach, Germany); Boese, F.K.; Tombazis, A.; Mouzakis, J.

1981-01-01T23:59:59.000Z

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


481

Thermally Activated Desiccant Technology for Heat Recovery and Comfort  

SciTech Connect

Desiccant cooling is an important part of the diverse portfolio of Thermally Activated Technologies (TAT) designed for conversion of heat for the purpose of indoor air quality control. Thermally activated desiccant cooling incorporates a desiccant material that undergoes a cyclic process involving direct dehumidification of moist air and thermal regeneration. Desiccants fall into two categories: liquid and solid desiccants. Regardless of the type, solid or liquid, the governing principles of desiccant dehumidification systems are the same. In the dehumidification process, the vapor pressure of the moist air is higher than that of the desiccant, leading to transfer of moisture from the air to the desiccant material. By heating the desiccant, the vapor pressure differential is reversed in the regeneration process that drives the moisture from the desiccant. Figure 1 illustrates a rotary solid-desiccant dehumidifier. A burner or a thermally compatible source of waste heat can provide the required heat for regeneration.

Jalalzadeh, A. A.

2005-11-01T23:59:59.000Z

482

Latent Heat or Phase Change Thermal Energy Storage  

Science Journals Connector (OSTI)

It has been explained in sections 1.6 and 1.6.2 how phase change materials (PCM) have considerably higher thermal energy storage densities compared to sensible heat storage materials and are able to absorb or rel...

H. P. Garg; S. C. Mullick; A. K. Bhargava

1985-01-01T23:59:59.000Z

483

Active solar heating and cooling information user study  

SciTech Connect

The results of a series of telephone interviews with groups of users of information on active solar heating and cooling (SHAC). An earlier study identified the information user groups in the solar community and the priority (to accelerate solar energy commercialization) of getting information to each group. In the current study only high-priority groups were examined. Results from 19 SHAC groups respondents are analyzed in this report: DOE-Funded Researchers, Non-DOE-Funded Researchers, Representatives of Manufacturers (4 groups), Distributors, Installers, Architects, Builders, Planners, Engineers (2 groups), Representatives of Utilities, Educators, Cooperative Extension Service County Agents, Building Owners/Managers, and Homeowners (2 groups). The data will be used as input to the determination of information products and services the Solar Energy Research Institute, the Solar Energy Information Data Bank Network, and the entire information outreach community should be preparing and disseminating.

Belew, W.W.; Wood, B.L.; Marle, T.L.; Reinhardt, C.L.

1981-01-01T23:59:59.000Z

484

Apparatus and method for solar heating of water  

SciTech Connect

This patent describes an apparatus for heating a tank of water comprising at least three substantially planar plastic strips positioned substantially vertically in spaced relationship in the water, such that the strips are substantially immersed in the water to be heated, and means for positioning the strips in the water with the provisos that the strips are light absorbent on both major planar surfaces and that the positioning means is of such construction as to minimize absorption of solar radiation by the positioning means rather than by the strips. A method for solar heating of a tank of water comprising the steps of positioning at least three substantially vertical, substantially planar plastic strips in spaced relationship in the water, such that strips are substantially immersed in the water to be heated, with the proviso that the strips are light absorbent on both major planar surfaces, and exposing the strips to solar radiation. A recreational swimming pool equipped with a solar heating apparatus comprising at least three substantially planar plastic strips removably positioned substantially vertically in spaced relationship in the pool water, such that and means for removably positioning the strips in spaced relationship in the pool water with the proviso that the strips are light absorbent on both major planar surfaces.

Caines, R.S.

1988-12-13T23:59:59.000Z

485

Thermal insulation by heat resistant polymers.  

E-Print Network (OSTI)

??Internal insulation in a solid rocket motor is a layer of heat-barrier material placed between the internal surface of the case and the propellant. The… (more)

Ahmed, Ashraf Fathy

2009-01-01T23:59:59.000Z

486

Coronal Heating Driven by Magnetic-gradient Pumping Mechanism in Solar Plasmas  

E-Print Network (OSTI)

The solar coronal heating is a longstanding mystery in astrophysics. Considering that the solar magnetic field is spatially inhomogeneous with considerable magnetic gradient from solar surface to the corona, this work proposes a magnetic gradient pumping (MGP) mechanism and try to explain the formation of hot plasma upflows, such as the hot type II spicules and hot plasma ejections, etc. In MGP mechanism, the magnetic gradients drive the energetic particles to move upwards from the underlying solar atmosphere and form hot upflows. These upflow energetic particles deposit in corona and make it becoming very hot. Roughly estimations indicate that the solar corona can be heated to above 1 million degrees, and the upflow velocity is about 40 km/s in chromosphere and about 130 km/s in the corona. The solar magnetic flux tubes act as pumpers to extract energetic particles from the underlying thermal photosphere, convey them and deposit in the corona. The deposition of energetic particles will make the corona become...

Tan, Baolin

2014-01-01T23:59:59.000Z

487

Heat efficiency of “translucent cover-radiation absorbing heat-exchange panel” system of flat solar collectors  

Science Journals Connector (OSTI)

An analytic expression is proposed for determining the heat efficiency of the “translucent cover-radiation absorbing heat-exchange panel” system of flat solar collectors, and on its base the heat efficiency of th...

R. R. Avezov; N. R. Avezova

2008-09-01T23:59:59.000Z

488

Low-Cost Solar Water Heating Research and Development Roadmap  

SciTech Connect

The market environment for solar water heating technology has changed substantially with the successful introduction of heat pump water heaters (HPWHs). The addition of this energy-efficient technology to the market increases direct competition with solar water heaters (SWHs) for available energy savings. It is therefore essential to understand which segment of the market is best suited for HPWHs and focus the development of innovative, low-cost SWHs in the market segment where the largest opportunities exist. To evaluate cost and performance tradeoffs between high performance hot water heating systems, annual energy simulations were run using the program, TRNSYS, and analysis was performed to compare the energy savings associated with HPWH and SWH technologies to conventional methods of water heating.

Hudon, K.; Merrigan, T.; Burch, J.; Maguire, J.

2012-08-01T23:59:59.000Z

489

Minor ion heating in spectra of linearly and circularly polarized Alfvén waves: Thermal and non-thermal motions associated with perpendicular heating  

SciTech Connect

Minor ion (such as He{sup 2+}) heating via nonresonant interaction with spectra of linearly and circularly polarized Alfvén waves (LPAWs and CPAWs hereafter) is studied. The obtained analytic solutions are in good agreement with the simulation results, indicating that newborn ions are heated by low-frequency Alfvén waves with finite amplitude in low-beta plasmas such as the solar corona. The analytic solutions also reproduce the preferential heating of heavy ions in the solar wind. In the presence of parallel propagating Alfvén waves, turbulence-induced particle motion is clearly observed in the wave (magnetic field) polarized directions. After the waves diminish, the newborn ions are heated, which is caused by the phase difference (randomization) between ions due to their different parallel thermal motions. The heating is dominant in the direction perpendicular to the ambient magnetic field. The perpendicular heating, ?=(T{sub i?}{sup R}?T{sub i0?}{sup R})/T{sub i0?}{sup R} (where T{sub i0?}{sup R} and T{sub i?}{sup R} are the perpendicular temperature of species i before and after genuine heating, respectively), in the spectrum of CPAWs is a factor of two stronger than that of LPAWs. Moreover, we also study the effect of field-aligned differential flow speed of species i relative to H{sup +}, ?v{sub ip}=(v{sub i}?v{sub p})·B/|B| (where v{sub i} and v{sub p} denote vector velocities of the H{sup +} and species i, respectively), on the perpendicular heating. It reveals that large drift speed, v{sub d}=?v{sub ip}, has an effect on reducing the efficiency of perpendicular heating, which is consistent with observations.

Dong, Chuanfei, E-mail: dcfy@umich.edu [Department of Atmospheric, Oceanic and Space Sciences, University of Michigan, Ann Arbor, Michigan 48109 (United States) [Department of Atmospheric, Oceanic and Space Sciences, University of Michigan, Ann Arbor, Michigan 48109 (United States); Los Alamos National Laboratory, Los Alamos, New Mexico 87544 (United States)

2014-02-15T23:59:59.000Z

490

Solar Thermochemical Fuels Production: Solar Fuels via Partial Redox Cycles with Heat Recovery  

SciTech Connect

HEATS Project: The University of Minnesota is developing a solar thermochemical reactor that will efficiently produce fuel from sunlight, using solar energy to produce heat to break chemical bonds. The University of Minnesota is envisioning producing the fuel by using partial redox cycles and ceria-based reactive materials. The team will achieve unprecedented solar-to-fuel conversion efficiencies of more than 10% (where current state-of-the-art efficiency is 1%) by combined efforts and innovations in material development, and reactor design with effective heat recovery mechanisms and demonstration. This new technology will allow for the effective use of vast domestic solar resources to produce precursors to synthetic fuels that could replace gasoline.

None

2011-12-19T23:59:59.000Z

491

Collisional Thermalization of Hydrogen and Helium in Solar Wind Plasma  

E-Print Network (OSTI)

In situ observations of the solar wind frequently show the temperature of $\\alpha$-particles (fully ionized helium), $T_\\alpha$, to significantly differ from that of protons (ionized hydrogen), $T_p$. Many heating processes in the plasma act preferentially on $\\alpha$-particles, even as collisions among ions act to gradually establish thermal equilibrium. Measurements from the $\\textit{Wind}$ spacecraft's Faraday cups reveal that, at $r=1.0\\ \\textrm{AU}$ from the Sun, the observed values of the $\\alpha$-proton temperature ratio, $\\theta_{\\alpha p} \\equiv T_\\alpha\\,/\\,T_p$ has a complex, bimodal distribution. This study applied a simple model for the radial evolution of $\\theta_{\\alpha p}$ to these data to compute expected values of $\\theta_{\\alpha p}$ at $r=0.1\\ \\textrm{AU}$. These inferred $\\theta_{\\alpha p}$-values have no trace of the bimodality seen in the $\\theta_{\\alpha p}$-values measured at $r=1.0\\ \\textrm{AU}$ but are instead consistent with the actions of the known mechanisms for $\\alpha$-particle p...

Maruca, Bennett A; Sorriso-Valvo, Luca; Kasper, Justin C; Stevens, Michael L

2013-01-01T23:59:59.000Z

492

Off-peak summer performance enhancement for rows of fixed solar thermal collectors using reflective surfaces.  

E-Print Network (OSTI)

??The possibility of increasing the efficiency of fixed solar thermal collectors without greatly adding to the cost or complexity of the overall solar collection system… (more)

Armenta, Casiano

2011-01-01T23:59:59.000Z

493

Chromospheric heating by electron and proton bombardment in the solar flare of June 7, 1980. Research note  

SciTech Connect

Using observations of both hard x-rays and gamma-rays in the large solar flare on June 7, 1980, we infer the amount of chromospheric heating due to bombardment both by non-thermal electrons and by protons, respectively. If a thick-target model for the X-ray bremsstrahlung is adopted, then proton heating is shown to be important only in the lower chromosphere; however, if the hard X-rays are substantially thermal in origin, then proton heating may play an important or indeed dominant role in determining the structure of the entire flaring chromosphere.

Emslie, A.G.

1982-12-01T23:59:59.000Z

494

Solar heating and cooling demonstration project at the Florida Solar Energy Center  

SciTech Connect

The retrofitted solar heating and cooling system installed at the Florida Solar Energy Center is described. Information is provided on the system's test, operation, controls, hardware and installation, including detailed drawings. The Center's office building, approximately 5000 square feet of space, with solar air conditioning and heating as a demonstration of the technical feasibility is located just north of Port Canaveral, Florida. The system was designed to supply approximately 70% of the annual cooling and 100% of the heating load. The project provides unique high-temperature, non-imaging, non-tracking, evacuated-tube collectors. The design of the system was kept simple and employs five hydronic loops. They are energy collection, chilled water production, space cooling, space heating and energy rejection.

Hankins, J.D.

1980-02-01T23:59:59.000Z

495

Solar thermal energy contract list, fiscal year 1990  

SciTech Connect

The federal government has conducted the national Solar Thermal Technology Program since 1975. Its purpose is to provide focus, direction, and funding for the development of solar thermal technology as an energy option for the United States. This year's document is more concise than the summaries of previous years. The FY 1990 contract overview comprises a list of all subcontracts begun, ongoing, or completed during FY 1990 (October 1, 1989, through September 30, 1990). Under each managing laboratory projects are listed alphabetically by project area and then by subcontractor name. Amount of funding milestones are listed.

Not Available

1991-09-01T23:59:59.000Z

496

Solar water heating potential in South Africa in dynamic energy market conditions  

Science Journals Connector (OSTI)

This paper is an attempt to determine the potential for solar water heating (SWH) in South Africa and the prospects for its implementation between 2010 and 2030. It outlines the energy market conditions, the energy requirements related to residential and commercial water heating in the country and the solar water heating market dynamics and challenges. It was estimated that 98% of the potential is in the residential sector and the rest in the commercial sector. The total thermal demand for 20 years for water heating was estimated to 2.2 EJ. A ‘Moderate SWH implementation’ will provide 0.83 EJ of clean energy until 2030 and estimated cost savings of 231 billion rand. For an ‘Accelerated SWH implementation’ these figures are 1.3 EJ and 369 billion rand. The estimated accumulated reduction of CO2 emissions due to SWH can be as high as 297 Mt. The increased affordability of residential hot water due to SWH is an important social factor and solar water heating has a strong social effect.

Georgi Donev; Wilfried G.J.H.M. van Sark; Kornelis Blok; Ognjan Dintchev

2012-01-01T23:59:59.000Z

497

Federal technology alert. Parabolic-trough solar water heating  

SciTech Connect

Parabolic-trough solar water heating is a well-proven renewable energy technology with considerable potential for application at Federal facilities. For the US, parabolic-trough water-heating systems are most cost effective in the Southwest where direct solar radiation is high. Jails, hospitals, barracks, and other facilities that consistently use large volumes of hot water are particularly good candidates, as are facilities with central plants for district heating. As with any renewable energy or energy efficien