Abstract
A simulation study on the operating performance of a new type of solar-air source heat pump water heater (SAS-HPWH) has been presented. The SAS-HPWH used a specially designed flat-plate heat collector/evaporator with spiral-finned tubes to obtain energy from both solar irradiation and ambient air for hot water heating. Using the meteorological data in Nanjing, China, the simulation results based on 150 L water heating capacity showed that such a SAS-HPWH can heat water up to 55 °C efficiently under various weather conditions all year around. In this simulation study, the influences of solar radiation, ambient temperature and compressor capacity on the performance of the SAS-HPWH were analyzed. In order to improve the overall operating performance, the use of a variable-capacity compressor has been proposed.
| Original language | English |
|---|---|
| Pages (from-to) | 1257-1265 |
| Number of pages | 9 |
| Journal | Applied Thermal Engineering |
| Volume | 26 |
| Issue number | 11-12 |
| DOIs | |
| Publication status | Published - 1 Aug 2006 |
Keywords
- Energy efficiency
- Heat pump
- Simulation
- Solar energy
- Water heater
ASJC Scopus subject areas
- Energy Engineering and Power Technology
- Mechanical Engineering
