摘要
不同冷却水流量条件下,板管式光伏光热(PV/T)系统的性能会发生显著变化。文章通过实验测试了当冷却水流量发生变化(0~0.25 kg/s)时,板管式PV/T组件的温度、发电功率、冷却水温度,以及板管式PV/T系统热效率的变化情况。分析结果表明:当冷却水流量为0~0.25 kg/s时,PV/T组件发电功率的平均值比PV组件增加了约5%,同时,PV/T系统的热效率可达到约57%;板管式PV/T组件的发电功率随着PV/T组件温度的升高而降低,PV/T系统的热效率随着冷却水温度的升高而升高。
The performance of sheet-tube photovoltaic/thermal(PV/T) system could be significant varied under different cooling water flow rates conditions.In the experiment,the temperature and output power of PV/T module,the temperature of water and the thermal efficiency of PV/T system have been tested,which are affected by the various flow rates(0~0.25 kg/s) of the cooling water.Results showed that the output power average of the PV/T module increased by approximately 5%more than the PV module,and the thermal efficiency of the PV/T system reached to approximately57%,when the flow rate of cooling water varied from 0 kg/s to 0.25 kg/s.In addition,the output power of the PV/T module decreased with the temperature increasing,but the thermal efficiency increased with the water temperature increasing.
引文
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