太阳能Issue(4)：41-48,8.DOI:10.19911/j.1003-0417.tyn20240508.02
抛物槽式太阳能集热器集热性能的实验研究
EXPERIMENTAL STUDY ON HEAT COLLECTION PERFORMANCE OF PARABOLIC TROUGH SOLAR COLLECTORS
摘要
Abstract
This paper established an experimental platform based on a parabolic trough solar heating system in Taian City,Shandong Province,and studies the effects of weather conditions,direct normal irradiance(DNI),and inlet temperature of thermal oil on the heat collection performance of the solar collector.The research results show that:1)The instantaneous thermal efficiency of the solar collector is significantly affected by weather.On sunny days,the maximum instantaneous efficiency reached 0.73.During windy conditions,influenced by wind speed,the efficiency dropped to 0.61.On foggy days,due to the attenuation of DNI caused by airborne particles,the maximum efficiency was 0.46.During rainy days,the instantaneous efficiency remained between 0.03 and 0.08.2)With a constant inlet temperature of thermal oil,the instantaneous thermal efficiency of the solar collector increased as the DNI increased.3)At DNI levels of 500 W/m2 and 600 W/m2,the instantaneous efficiency initially increased and then decreased with rising inlet oil temperature.when the DNI levels is 700 W/m2 and 800 W/m2,due to the higher DNI compensating for some of the heat loss of the solar collector,the instantaneous heat collection efficiency of the solar collector continues to increase with the increase of the inlet temperature of the thermal oil,but the increase is relatively gentle.These findings provide theoretical support for advancing the application of parabolic trough solar collectors in heating engineering projects.关键词
抛物槽式太阳能集热器/瞬时集热效率/法向直接辐照度/入口温度/供暖Key words
parabolic trough solar collector/instantaneous heat collection efficiency/DNI/inlet temperature/heating分类
能源科技引用本文复制引用
戴安,赵强,郭杰..抛物槽式太阳能集热器集热性能的实验研究[J].太阳能,2025,(4):41-48,8.基金项目
济南市"高校20条"产业创新载体项目(2021GXRC116) （2021GXRC116）
山东省科技型中小企业创新能力提升工程(2022TSGC2135,2023TSGC0236) （2022TSGC2135,2023TSGC0236）
