为研究寒冷地区不同过流断面平板微热管光伏光热一体化组件（MHP-PV/T）冬季运行性能,对2组MHP-PV/T组件在45°安装倾角下进行性能测试,对比2022年1月1—2日系统光电、光热和综合性能。结果表明： 在室外平均环境温度0.5 ℃条件下,矩形过流断面平板微热管PV/T（R-MHP-PV/T）系统平均光电效率12.1%、光电功率140.6 W、光热效率12.2%、光热功率161.7 W、总能功率321.1 W、总能效率约24.6%,总能收益2.31 kWh;梯形过流断面平板微热管PV/T（T-MHP-PV/T）系统平均光电效率12.0%、光电功率140.4 W、光热效率约8.6%、光热功率114.6 W、总能功率278.4 W、总能效率约20.9%,总能收益2.11 kWh。填充工质为R141b、充液率25%的矩形和梯形过流断面MHP-PV/T系统在寒冷地区冬季室外可启动并正常工作,R-MHP-PV/T系统综合性能优于T-MHP-PV/T系统。
Abstract
In order to study the winter operation performance of micro heat pipe PV/T with different cross section in cold areas, two groups of MHP-PV/T systems are tested under 45° sloped angle. The photoelectric, photothermal and comprehensive performances of the system from January 1 to 2, 2022 are compared and analyzed. The results show that： under the condition of outdoor average ambient temperature of 0.5 ℃, the rectangular cross section MHP-PV/T （R-MHP-PV/T） system average photoelectric efficiency is 12.1%, photoelectric power is 140.6 W, photothermal efficiency is 12.2%, photothermal power is 161.7 W, total power is 321.1 W, total energy efficiency is 24.6%, the total revenue for is 2.31 kWh. The trapezoidal cross section MHP-PV/T（T-MHP-PV/T） system average photoelectric efficiency is 12.0%, photoelectric power is 140.4 W, photothermal efficiency is about 8.6%, photothermal power is 114.6 W, total power is 278.4 W, total energy efficiency is about 20.9%, the total revenue is 2.11 kWh. The MHP-PV/T system with rectangular and trapezoidal cross section filled with working medium R141b and liquid filling rate of 25% can be started and work normally outdoors in cold areas in winter. The comprehensive performance of R-MHP-PV/T system is better than that of T-MHP-PV/T system.
关键词
太阳能 /
光伏光热 /
热电性能 /
热管 /
实验研究
Key words
solar energy /
photovoltaic/thermal /
thermoelectric performance /
heat pipe /
experimental research
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基金
国家重点研发计划（2019YFE0104900）; 甘肃省科技重大专项项目（22ZD6WA056）; 甘肃省高等学校产业支撑引导项目 （2021CYZC-33; 2022CYZC-28）; 兰州市人才创新创业项目（2017-RC-34）
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