Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Development of CO2 heat pump water heater for residential use-development and performance evaluation of the prototype system
Environmental protection is becoming more important, and heat pumps with natural working fluids are being developed eagerly. On the other hand, in Japan, the demand for hot tap water accounts for about one third of residential final energy consumption, but most of this demand is met by the direct combustion of fossil fuel. So it is very effective for saving energy to develop highly efficient heat pumps for hot tap water supply. Under such a circumstance, the development of a CO2 heat pump water heater for residential use was started. The components, such as a compressor, heat exchangers, etc. were developed. A prototype, which consists of these components, was designed and made. In this paper, the authors describe the outline of the prototype heat pump unit and its experimental results including its characteristics and performance. Also, the yearly average COP under Tokyo conditions was estimated from these studies and it was clarified that the average COP was over 3. The developed CO2 heat pump water heater can achieve high efficiency and is very promising.
Development of CO2 heat pump water heater for residential use-development and performance evaluation of the prototype system
Environmental protection is becoming more important, and heat pumps with natural working fluids are being developed eagerly. On the other hand, in Japan, the demand for hot tap water accounts for about one third of residential final energy consumption, but most of this demand is met by the direct combustion of fossil fuel. So it is very effective for saving energy to develop highly efficient heat pumps for hot tap water supply. Under such a circumstance, the development of a CO2 heat pump water heater for residential use was started. The components, such as a compressor, heat exchangers, etc. were developed. A prototype, which consists of these components, was designed and made. In this paper, the authors describe the outline of the prototype heat pump unit and its experimental results including its characteristics and performance. Also, the yearly average COP under Tokyo conditions was estimated from these studies and it was clarified that the average COP was over 3. The developed CO2 heat pump water heater can achieve high efficiency and is very promising.
Development of CO2 heat pump water heater for residential use-development and performance evaluation of the prototype system
Titel japanisch
Saikawa, M. (Autor:in) / Hashimoto, K. (Autor:in) / Kobayakawa, T. (Autor:in) / Kusakari, K. (Autor:in) / Itoh, M. (Autor:in) / Sakakibara, H. (Autor:in)
2001
8 Seiten, 9 Quellen
Aufsatz (Zeitschrift)
Japanisch
Development of a Low-Cost Heat Pump Water Heater for Residential Applications
| British Library Conference Proceedings | 1998
Performance of a heat pump water heater
| TIBKAT | 1952
Development of a Prototype Residential Valuation System
| British Library Conference Proceedings | 1998
Development of high-efficiency carbon dioxide commercial heat pump water heater
| Taylor & Francis Verlag | 2013