The effects of volumetric flow rate and inclination angle on the performance of a solar thermal collector

被引：16

作者：

Razika, Ihaddadene ^{[1
]}

Nabila, Ihaddadene ^{[1
]}

Madani, Bey ^{[1
]}

Zohra, Hamdibacha Fatima ^{[2
]}

机构：

[1] Msila Univ, Dept Mech Engn, Msila, Algeria

[2] Msila Univ, Lab Fluid Mech, Msila, Algeria

来源：

ENERGY CONVERSION AND MANAGEMENT | 2014年 / 78卷

关键词：

Solar energy; Solar storage collector; Volumetric flow rate; Collector inclination; Instantaneous collector efficiency;

D O I：

10.1016/j.enconman.2013.09.051

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A solar collector is a device that converts solar energy into heat. This paper presents an experimental study on the influences of volumetric flow rate and inclination angle on the performance of a solar collector. The tests were conducted on a solar energy demonstration system (ET200), which consists of a solar collector, a storage tank, a control and command cabinet and a high power lamp simulating solar energy. For radiation intensity of 1.033 kW/m(2) and inclination angle of 0 degrees, the results showed that the efficiency of the collector followed a linear relationship versus the flow rate; eta = 0.68 x Q(v) + 49.79 and presented a coefficient of correlation (R-2) of 0.9898. Similarly, the increase of the inclination angle from 0 degrees to 6 degrees increased the effectiveness of the collector. A linear relationship; eta = 0.43 x alpha + 53.07 with a high coefficient of determination (R-2 = 0.967) relates the collector efficiency to the inclination angle. It is important to operate at higher mass flow rates and take the collector angle at 0 degrees in order to reach its meaning full efficiency (heating water). (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：931 / 937

页数：7

共 9 条

[1]

[Anonymous], 2003, INSTR MAN ET200 SOL

[2] Comparison of the performance of two solar heating systems used to improve the microclimate of agricultural greenhouses in Morocco [J].