Abstract Industrial process heating has been identified as a potential field for solar thermal applications. In this paper, a comparative study was carried out on the performance of an individual solar collector under laboratory conditions and performance of the collector array under field condition. Compound Parabolic Concentrator (CPC) has been used as a solar collector for the application of boiler feed water preheating. The characterization of CPC has been done in liquid phase with water as a working fluid as per the standard, IS 16648 (Part-5):2017. The optical efficiency of the CPC is found to be 64.8% under standard test conditions. In the field, total 200 number of CPCs, each having 3 m2 area, were installed. The performance monitoring and evaluation of the actual installation was carried out over a period of 10 months. The system was designed to supply average 448,500 kWh- Thermal/year, saving the equivalent amount of fossil fuel. The comparative study of the performance of CPC collector under standard conditions and actual operating conditions in the field shows significant variation. The average variation in the performance was about 9% with a maximum variation of 14.7%. The major reasons behind the lower performance output than expected, attribute to the heat losses through the collector manifold and piping (3.9%), soiling of reflector and absorber of CPC (1.72%), uncertainties of instruments (1.49%) and other unaccounted losses like dislocation of the evacuated tubes from the original position, loss of vacuum through evacuated tubes, shadow effect, heat utilization pattern etc. (1.89%), which should be considered while designing the solar field to meet the required output.

中文翻译：

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复合抛物面太阳能集热器 – 根据印度环境中工业过程热应用的标准测试方法和实际现场条件进行性能评估

摘要 工业过程加热已被确定为太阳能热应用的潜在领域。在本文中，对实验室条件下单个太阳能集热器的性能和现场条件下集热器阵列的性能进行了比较研究。复合抛物面聚光器 (CPC) 已被用作太阳能集热器，用于锅炉给水预热的应用。根据 IS 16648（第 5 部分）：2017 标准，CPC 的表征是在液相中以水作为工作流体进行的。在标准测试条件下发现 CPC 的光学效率为 64.8%。在现场，总共安装了 200 台 CPC，每个 CPC 的面积为 3 平方米。实际安装的性能监测和评估历时 10 个月。该系统旨在提供平均 448,500 千瓦时热能/年，节省了等量的化石燃料。CPC收集器在标准条件下和现场实际操作条件下的性能对比研究表明存在显着差异。性能的平均变化约为 9%，最大变化为 14.7%。性能输出低于预期的主要原因是通过集热器歧管和管道的热损失（3.9%）、CPC 反射器和吸收器的污染（1.72%）、仪器的不确定性（1.49%）和其他未计入的损失如真空管与原始位置的错位、真空管的真空损失、阴影效应、热利用模式等（1.89%），