研究目的
Investigating the performance of a micro-refrigeration system driven by photovoltaic power generation under different weather conditions.
研究成果
The battery enhances the stability of the cooling capacity and load power. The system's efficiency fluctuates with solar radiation intensity. The largest exergy loss is from the photovoltaic part, accounting for over 80% of the total loss, with the compressor part contributing more than 16%. The exergy efficiency of the refrigeration system is about 28% under both sunny and cloudy conditions.
研究不足
The study did not include results on semi-sunny or semi-cloudy days, which could provide a more comprehensive understanding of the system's performance under varying weather conditions.
1：Experimental Design and Method Selection:
The study established a micro-refrigeration experimental system driven by photovoltaic power generation to investigate cooling capacity, load power, and system efficiency changes over time under sunny and cloudy weather conditions.
2：Sample Selection and Data Sources:
The system consisted of outdoor solar power generation, indoor micro refrigeration, and a storage battery and control system.
3：List of Experimental Equipment and Materials:
Two photovoltaic panels with an area of about 4 m2, a micro compressor with a power input of about 120W, and R134a as the refrigerant.
4：Experimental Procedures and Operational Workflow:
The system's performance was monitored over time under both sunny and cloudy conditions, focusing on cooling capacity, load power, and system efficiency.
5：Data Analysis Methods:
The study used energy and exergy analysis methods to evaluate the system's performance.
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