研究目的
The present study analyzed the potential of producing energy from PV/T systems in the greenhouse production sector, focusing on different greenhouse coverings (glass, plastic, and polycarbonate) and the use of PV/T systems inside greenhouses to investigate their effect on energy parameters and output power.
研究成果
The study concluded that the PV/T system's performance is significantly affected by the type of greenhouse covering and the water mass flow rate. The highest overall efficiency was achieved with glass covering at a flow rate of 0.033 kg/s. The use of a solar tracker improved electrical efficiency but had a minimal effect on thermal efficiency. The findings suggest that PV/T systems can be a viable solution for meeting the electrical and thermal energy needs of greenhouses.
研究不足
The study was conducted in a small-scale greenhouse, and the results may vary in larger or differently structured greenhouses. The effect of shadows from the greenhouse structure on the PV panels was noted as a limitation affecting the electrical efficiency.
1：Experimental Design and Method Selection:
The study analyzed the performance of a PV/T system installed inside a greenhouse under three different types of glazing (glass, plastic, and polycarbonate) at four flow rates (0.016, 0.025, 0.033 kg/s, and no-flow) with two configurations (with and without solar tracker).
2：016, 025, 033 kg/s, and no-flow) with two configurations (with and without solar tracker).
Sample Selection and Data Sources:
2. Sample Selection and Data Sources: A 5.8 m2 greenhouse located in Mazandaran Province, Iran, was used. The PV/T system included two polycrystalline solar panels set at an angle of about 29° against the horizon facing south.
3：8 m2 greenhouse located in Mazandaran Province, Iran, was used. The PV/T system included two polycrystalline solar panels set at an angle of about 29° against the horizon facing south.
List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: Equipment included PV panels, a solar power meter, thermocouples, a data logger, a solar power analyzer, and a flow meter sensor.
4：Experimental Procedures and Operational Workflow:
Experiments were conducted from 10 AM to 4 PM, with data collected at 5 min intervals. Parameters measured included PV panel temperature, inlet/outlet water temperatures, solar irradiation, open-circuit voltage, short-circuit current, and panel electrical output power.
5：Data Analysis Methods:
Electrical, thermal, and overall efficiencies were calculated using specific equations to analyze the performance of the PV/T system under different conditions.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
