关键词: 光伏发电, 微小制冷系统, 设计, 太阳能, 再生能源

Abstract: An obvious advantage by combining the uses of solar power generation and refrigeration systems is that the electric power available and the cooling demand can be highly matched in season and quantity. However,the performance and stability of a miniature refrigeration system are also easily affected by the change of environmental parameters. An experimental model of a miniature solar refrigeration system(MSRS) based on the combination of photovoltaic and battery was proposed. The experimental analysis of MSRS was carried out. The results operated continuously for 10 hours under a fine and cloudy day showed that the output of photovoltaic cells is 1.48kW·h power,of which 86% is supplied to the compressor,7% is stored to the battery,7% is consumed by the controller,however, while under a cloudy day,the photovoltaic cell outputs is 1.02kW·h power,which provides 73% of the energy for the system,the remaining 27% is provided by the battery. Under the condition using battery alone,the system has been running for 7,12 and 4 hours respectively within three days,the battery outputs 3.11kW·h power,about 93% of which is supplied to the compressor,the remaining 7% is consumed by the controller. The matching relationship between cooling capacity requirement with power available for the present system was analyzed,which provided the experimental basis for the application of MSRS in the future.

Key words: PV generation, miniature refrigeration system, design, solar energy, renewable energy