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Author:
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Category : Power resources
Languages : en
Pages : 824
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Author:
Publisher:
ISBN:
Category : Power resources
Languages : en
Pages : 824
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ISBN:
Category : Aeronautics
Languages : en
Pages : 1346
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Category : Fuel
Languages : en
Pages : 418
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Author:
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Category : Fuel
Languages : en
Pages : 584
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Category :
Languages : en
Pages :
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A description is given of the development and testing of the newly-marketed dedicated heat pump water heater (HPWH), and an analysis is presented of its performance and space conditioning impacts. This system utilizes an air-to-water heat pump, costs about $1000 installed, and obtains a coefficient of performance (COP) of about 2.0 in laboratory and field tests. Since a HPWH is usually installed indoors and extracts heat from the air, its operation is a space conditioning benefit if an air conditioning load exists and a penalty if a space heating load exists. To investigate HPWH performance and a space conditioning impacts, a simulation has been developed to model the thermal performance of a residence with resistance baseboard heat, air conditioning, and either heat pump or resistance water heating. The building characteristics are adapted for three US geographical areas (Madison, Wisconsin; Washington, DC; and Ft. Worth, Texas), and the system is simulated for a year with typical weather data. For each city, HPWH COPs are calculated monthly and yearly. In addition, the water heating and space conditioning energy requirements of HPWH operation are compared with those of resistance water heater operation to determine the relative performance ratio (RPR) of the HPWH. The annual simulated RPRs range from 1.5 to 1.7, which indicate a substantial space heating penalty of HPWH operation in these cities.
Author: United States. Congress. House. Committee on Energy and Commerce. Subcommittee on Energy Conservation and Power
Publisher:
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Category : Energy conservation
Languages : en
Pages : 188
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Category : Building
Languages : en
Pages : 540
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Category : Solar energy
Languages : en
Pages : 72
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Author: J. Bosma
Publisher: Elsevier
ISBN: 0444596550
Category : Technology & Engineering
Languages : en
Pages : 613
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The 70 papers collected in this volume present an up to date review of the trends in heat pump technology. The heat pump is reviewed both as being part of a more comprehensive system, and as a refined device providing energy and greenhouse gas emission reductions. Its implementation in a system or process must be carefully considered at an early stage of design or development, and process integration is discussed in detail as a valuable tool for industry.The heat pump is proving to be a highly effective energy conserving tool, particularly when designed and used as an integral part of a system. Environmental benefits are gained when energy is conserved, and heat pumps can make a major contribution in this area. However, some heat pumps use working fluids which are environmentally unfriendly, and the progress that has been made in the field of alternative refrigerants is reported on. The volume will prove an indispensable reference source on the wide-ranging applications that have been developed since the last international conference, on such topics as heat pump field trials, pilot plants and development programmes.
Author: American Society of Heating, Refrigerating and Air-Conditioning Engineers
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Category : Air conditioning
Languages : en
Pages : 1882
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