Numerical thermal study on effect of porous rings on performance of solar parabolic trough collector

被引：146
作者：
Ghasemi, Seyed Ebrahim [1 ]
Ranjbar, Ali Akbar [1 ]
机构：
[1] Babol Univ Technol, Dept Mech Engn, Babol Sar, Iran
来源：
APPLIED THERMAL ENGINEERING | 2017年 / 118卷
关键词：
Thermal study; Solar parabolic trough collector; Porous ring; RNG k-epsilon model; Syltherm; 800; HEAT-TRANSFER; RECEIVER; SYSTEM; CONCENTRATOR; FLOW; SIMULATION; GENERATION; NANOFLUID; DESIGN; STEAM;
D O I：
10.1016/j.applthermaleng.2017.03.021
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
In this article, three dimensional turbulent flow for Syltherm heat transfer fluid in absorber tube of solar system with turbulators is simulated. The thermo-hydraulic characteristics of solar parabolic trough collector with porous rings are investigated numerically. The numerical simulation is implemented by using Computational Fluid Dynamics (CFD). The impact of distance between rings and the inner diameter of the rings on the thermal performance of the collector are evaluated. The heat transfer fluid is Syltherm 800 and the analysis is carried out based on Re-Normalization-Group (RNG) k-epsilon turbulent model. The results show that the heat transfer characteristics of solar parabolic trough collector enhances by inserting the porous rings in tubular solar absorber. Also, by decreasing the distance between porous rings, the heat transfer characteristic increases but by increasing the inner diameter of the porous rings, the Nusselt number reduces. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：807 / 816
页数：10
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