分析与研究了槽式太阳能聚光集热器运行特性，建立了槽式太阳能聚光集热器运行特性参数的数学模型，应用该模型以我国西部太阳能热发电的典型地区为计算地点，对槽式太阳能聚光集热器的太阳入射角余弦、入射角修正系数、遮挡系数、端部损失及镜场运行效率等运行特性参数进行了计算。结果表明：槽式太阳能集热器正午时刻入射角余弦达到最小值，余弦效应最为明显；遮挡损失和端部损失对槽式集热器的运行影响总体不大，在日出、日落时刻会发生遮挡效应，最大端部损失发生在正午时刻；槽式太阳能聚光集热器镜场效率正午时刻之前单调下降，正午时刻后，随高度角的下降而单调增加，在正午时刻达到最小值，夏至日镜场效率峰值约为0.74，冬至日的峰值约为0.47，差值约为0.27。

This paper analyzes and studies the theory of operating characteristics of parabolic trough solar collector(PTC),and the mathematical model of PTC is established.This model is then applied to calculate the cosine of solar incidence angle,Incidence Angle Modifier,Row Shadowing,end loss and so on in the western part of China.Operating characteristic parameters such as the operating efficiency of the solar field are calculated.The results show that the incidence angle cosine of the trough solar collector reaches the minimum at noon,and the cosine effect is the most evident.The Row Shadowing and the end loss have little influence on the PTC,and the Row Shadowing occurs at sunrise and sunset,and the maximum end loss occurs at noon.The solar field efficiency of the PTCs decreases monotonously before noon,increases monotonously with the decrease of the height angle after noon,and reaches the minimum at noon.The peak efficiency of the solar field in summer solstice is about 0.74,the peak efficiency in winter solstice is about 0.47,and the difference is about 0.27.

TK513.1

国家电网公司科研项目-光热电站优化配置及协调运行关键技术研究(SGQHJY00GHJS1700078)；南京工程学院校级科研基金项目（ZKJ201703）