Abstract
A new type of solar-air source heat pump water heating system was developed for space heating and residential hot water supply. The specially designed multi-source collector/evaporator (C/E) using spiral-finned tubes could absorb heat from both solar radiation and ambient air. A prototype was designed and tested on different weather conditions in October in Nanjing, China. The experimental results showed that the prototype could heat water from 40 °C up to 55 °C efficiently both in the daytime and at night. It operated in the solar-source mode with a high averaged COP of 5.1 in the daytime when the solar radiation was 731 W/m 2. Meanwhile, it operated in the air-source mode stably with a averaged COP of 3.5 at night, avoiding using electricity as a backup energy source.
Original language | English |
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Title of host publication | 2009 Asia-Pacific Power and Energy Engineering Conference, APPEEC 2009 - Proceedings |
DOIs | |
Publication status | Published - 27 Aug 2009 |
Event | 2009 Asia-Pacific Power and Energy Engineering Conference, APPEEC 2009 - Wuhan, China Duration: 27 Mar 2009 → 31 Mar 2009 |
Conference
Conference | 2009 Asia-Pacific Power and Energy Engineering Conference, APPEEC 2009 |
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Country/Territory | China |
City | Wuhan |
Period | 27/03/09 → 31/03/09 |
Keywords
- Collector/evaporator
- Heat pump
- Solar energy
- Water heater
ASJC Scopus subject areas
- Energy Engineering and Power Technology