A review on passive methods for thermal performance enhancement in parabolic trough solar collectors,International Journal of Energy Research

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A review on passive methods for thermal performance enhancement in parabolic trough solar collectors
International Journal of Energy Research ( IF 4.3 ) Pub Date : 2020-11-16 , DOI: 10.1002/er.6212
Mridul Sharma _{1,

2} , Ravindra Jilte ₁

Affiliation

Among the diverse renewable energy sources available, solar energy harnessing has become very common in most countries. Various collectors were developed, built and checked to work in various temperature ranges. The parabolic trough solar collector is found to be the most common among the other collectors in applications such as the distribution of process heat and the production of steam. The heat collector part known as receiver tube is one of the key practical devices of parabolic trough solar collector. Numerous research studies have centered on receiver tube to raise its thermal potential. The usage of passive techniques such as provision of inserts in the receiver tube and geometrical changes of receiver tube are efficient strategies for increasing thermal performance. Detailed review of the numerical and experimental studies conducted on heat transfer enhancement strategies that rely on the use of inserts with the use of different working fluids in a parabolic trough solar collector's receiver tube is described in this article. Additionally heat transfer enhancement due to geometrical modification of receiver tube is also presented. Further, on the basis of literature survey, a comparison among various strategies is outlined. These studies show that future work in this area, that is, usage of passive techniques in parabolic trough solar collector will offer further growth.

中文翻译：

抛物槽式太阳能集热器被动性能提升方法综述

在可用的各种可再生能源中，利用太阳能已经在大多数国家中非常普遍。开发，建造和检查了各种收集器，以在各种温度范围内工作。发现抛物线槽式太阳能集热器是其他集热器中最常见的应用，例如过程热量的分布和蒸汽的产生。集热器部分称为接收器管，是抛物槽式太阳能集热器的关键实用设备之一。许多研究集中在接收管上，以提高其热潜能。诸如在接收管中提供插入物和接收管的几何形状变化之类的无源技术的使用是提高热性能的有效策略。本文详细介绍了有关传热增强策略的数值和实验研究，这些策略依赖于在抛物槽式太阳能集热器的接收管中使用插入件和使用不同的工作流体。此外，还提出了由于接收管的几何形状修改而提高的传热效果。此外，在文献调查的基础上，概述了各种策略之间的比较。这些研究表明，该领域的未来工作，即在抛物槽式太阳能集热器中使用无源技术将提供进一步的增长。此外，还提出了由于接收管的几何形状修改而提高的传热效果。此外，在文献调查的基础上，概述了各种策略之间的比较。这些研究表明，该领域的未来工作，即在抛物槽式太阳能集热器中使用无源技术将提供进一步的增长。此外，还提出了由于接收管的几何形状修改而提高的传热效果。此外，在文献调查的基础上，概述了各种策略之间的比较。这些研究表明，该领域的未来工作，即在抛物槽式太阳能集热器中使用无源技术将提供进一步的增长。

更新日期：2020-11-16

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