Experimental analysis of defrosting and heating performance of a solar‐assisted heat pump integrated phase change energy storage
| Autor: | Jie Yang, Lvlin Jiang, Haifei Chen, Ali Badiei, Yang Zhang, Fuwei Zhang, Yunjie Wang, Tao Lu, Guiqiang Li |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
H221
Materials science Solar-assisted heat pump 020209 energy Nuclear engineering H223 H300 Energy Engineering and Power Technology 02 engineering and technology Energy storage law.invention Phase change Defrosting law 0202 electrical engineering electronic engineering information engineering J910 Renewable Energy Sustainability and the Environment business.industry Energy consumption 021001 nanoscience & nanotechnology Solar energy Fuel Technology Nuclear Energy and Engineering Heat transfer 0210 nano-technology business Heat pump |
| Zdroj: | International Journal of Energy Research. 44:2173-2182 |
| ISSN: | 1099-114X 0363-907X |
| Popis: | This thesis investigates a novel solar-assisted heat pump integrated phase change energy storage system. The defrosting performance of this system was studied experimentally and the results were compared with two traditionally used methods: reverse cycle defrosting (RCD) method and hot gas bypass defrosting (HGBD) method. The results show that the phase change energy storage system has superior performance compared with traditional defrosting methods. The indoor temperature drop recorded was relatively small and the defrosting time was 75% of the RCD system and 53% of HGBD system. The phase change energy storage system increased the condensation temperature which consequently increased the temperature difference of heat transfer resulting in higher conductivity in the defrosting progress. Compared with the method of RCD and the method of HGBD, the recovery time of the system was shortened by 90 and 160 seconds, respectively. The system works with low-temperature heat source and circulating water, which considerably reduces energy consumption, thereby improving the performance of the defrosting system. A further experimental study was also conducted on the heating performance and the results also indicated that the value of COP can reach up to 3.6 in daytime, and the indoor temperature can be stably maintained above 18°C throughout the day. |
| Databáze: | OpenAIRE |
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