Abstract
Central Research Institute of Electric Power Industry (CRIEPI) has been developing a two-stage compression type hot-water supply heat pump for commercial use, aiming at energy saving in the hot-water supply field. This paper makes an evaluation of energy saving and economic efficiency of this heat pump in case of applying the system to four types of buildings which are different in heat load structure. Results obtained are as follows: CRIEPI{prime}s system is so energy-saving and approximately 20-30% lower in primary energy consumption than the conventional one. CO{sub 2} emissions calculated using CO{sub 2} emission unit requirement of each energy are approximately 30-40% lower than those of the conventional one, and this system is so superior in environmental conservation. If estimating depreciation period of the system at 15 years, the system is low in annual running cost and can be competitive in economic efficiency. Particularly in a building which is large in hot-water supply load and larger in cooling load than in heating load, the system has an advantage in economic efficiency. This is because CRIEPI{prime}s two-stage compression type heat pump can make cold water for cooling during a supply of hot water and therefore installation capacity of the airconditioning heat
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Saikawa, M;
Iwatsubo, T;
Hasegawa, H;
Hamamatsu, T
[1]
- Central Research Institute of Electric Power Industry, Tokyo (Japan)
Citation Formats
Saikawa, M, Iwatsubo, T, Hasegawa, H, and Hamamatsu, T.
Development of advanced heat pump for hot tap-water supply. Evaluation of energy and economic efficiency of the system; Gyomuyo 2 dan asshukushiki kyuto heat pump no kaihatsu. System no sho energy sei, keizaisei no hyoka.
Japan: N. p.,
1991.
Web.
Saikawa, M, Iwatsubo, T, Hasegawa, H, & Hamamatsu, T.
Development of advanced heat pump for hot tap-water supply. Evaluation of energy and economic efficiency of the system; Gyomuyo 2 dan asshukushiki kyuto heat pump no kaihatsu. System no sho energy sei, keizaisei no hyoka.
Japan.
Saikawa, M, Iwatsubo, T, Hasegawa, H, and Hamamatsu, T.
1991.
"Development of advanced heat pump for hot tap-water supply. Evaluation of energy and economic efficiency of the system; Gyomuyo 2 dan asshukushiki kyuto heat pump no kaihatsu. System no sho energy sei, keizaisei no hyoka."
Japan.
@misc{etde_10142183,
title = {Development of advanced heat pump for hot tap-water supply. Evaluation of energy and economic efficiency of the system; Gyomuyo 2 dan asshukushiki kyuto heat pump no kaihatsu. System no sho energy sei, keizaisei no hyoka}
author = {Saikawa, M, Iwatsubo, T, Hasegawa, H, and Hamamatsu, T}
abstractNote = {Central Research Institute of Electric Power Industry (CRIEPI) has been developing a two-stage compression type hot-water supply heat pump for commercial use, aiming at energy saving in the hot-water supply field. This paper makes an evaluation of energy saving and economic efficiency of this heat pump in case of applying the system to four types of buildings which are different in heat load structure. Results obtained are as follows: CRIEPI{prime}s system is so energy-saving and approximately 20-30% lower in primary energy consumption than the conventional one. CO{sub 2} emissions calculated using CO{sub 2} emission unit requirement of each energy are approximately 30-40% lower than those of the conventional one, and this system is so superior in environmental conservation. If estimating depreciation period of the system at 15 years, the system is low in annual running cost and can be competitive in economic efficiency. Particularly in a building which is large in hot-water supply load and larger in cooling load than in heating load, the system has an advantage in economic efficiency. This is because CRIEPI{prime}s two-stage compression type heat pump can make cold water for cooling during a supply of hot water and therefore installation capacity of the airconditioning heat pump can be decreased. 3 refs., 4 figs., 17 tabs.}
place = {Japan}
year = {1991}
month = {Jul}
}
title = {Development of advanced heat pump for hot tap-water supply. Evaluation of energy and economic efficiency of the system; Gyomuyo 2 dan asshukushiki kyuto heat pump no kaihatsu. System no sho energy sei, keizaisei no hyoka}
author = {Saikawa, M, Iwatsubo, T, Hasegawa, H, and Hamamatsu, T}
abstractNote = {Central Research Institute of Electric Power Industry (CRIEPI) has been developing a two-stage compression type hot-water supply heat pump for commercial use, aiming at energy saving in the hot-water supply field. This paper makes an evaluation of energy saving and economic efficiency of this heat pump in case of applying the system to four types of buildings which are different in heat load structure. Results obtained are as follows: CRIEPI{prime}s system is so energy-saving and approximately 20-30% lower in primary energy consumption than the conventional one. CO{sub 2} emissions calculated using CO{sub 2} emission unit requirement of each energy are approximately 30-40% lower than those of the conventional one, and this system is so superior in environmental conservation. If estimating depreciation period of the system at 15 years, the system is low in annual running cost and can be competitive in economic efficiency. Particularly in a building which is large in hot-water supply load and larger in cooling load than in heating load, the system has an advantage in economic efficiency. This is because CRIEPI{prime}s two-stage compression type heat pump can make cold water for cooling during a supply of hot water and therefore installation capacity of the airconditioning heat pump can be decreased. 3 refs., 4 figs., 17 tabs.}
place = {Japan}
year = {1991}
month = {Jul}
}