期刊
INTERNATIONAL JOURNAL OF MODERN PHYSICS C
卷 33, 期 9, 页码 -出版社
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0129183122501133
关键词
Glazed transpired solar collector; perforated absorber; flat-plate solar collector; air injection; forced convection; constant surface heat flux condition
This paper investigates the flat-plate solar collector with different porosities and conducts a parametric study based on numerical simulation. The results show that the use of perforated absorbers can increase the heat transfer area and reduce the local flux density, thereby improving the thermal performance of the collector.
In this paper, the flat-plate solar collector with different porosities is considered. The use of perforated absorbers has many advantages, including the diffusion of the absorbed radiation over the entire depth of the absorber, which increases the area of heat transfer and reduces the local flux density on absorbent surfaces. A parametric study based on numerical simulation is carried out by varying the absorber plate perforation diameter and fixing its spacing. The inlet mass flow rate is changed in a large interval in order to determine the optimal operating points. The heat diffusion and energy balance equations are formulated to be suitable to analyze the influence of the absorber plates' perforation on the GTC thermal performance. That is why, the necessary basic assumptions are developed to simulate the heat exchange mechanism as accurate as possible. Therefore, the heated air thermal conductivity is neglected against that of the absorber which allows that constant surface heat flux condition to be applied at its outer well as well as at glazing cover. The methodology of simulation is completed by aided flowchart to handle the radiation loss and pressure drops' validation.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据