Correlation of experimental and theoretical heat transfer in mantle tanks used in low flow SDHW systems

被引：25

作者：

Shah, LJ ^{[1
]}

Furbo, S ^{[1
]}

机构：

[1] Tech Univ Denmark, Dept Bldg & Energy, DK-2800 Lyngby, Denmark

来源：

SOLAR ENERGY | 1998年 / 64卷 / 4-6期

关键词：

D O I：

10.1016/S0038-092X(98)00093-0

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Experimental and theoretical investigations of vertical mantle tanks for solar domestic hot water systems have been carried out. Differently designed mantle tanks have been evaluated in a laboratory test facility and a transient three-dimensional CFD-model of one of the mantle tanks is developed in the CFD-program CFX 4.1. The model is validated against the experimental tests and good agreement between measured and calculated results are achieved. The results from the CFD-calculations are used to illustrate the thermal behaviour and the fluid dynamics in the mantle and in the inner tank The CFD-calculations are used to carry out a detailed analysis of the heat transfer from the solar collector fluid to the wall of the inner tank. The analysis has resulted in a local Nusselt-Rayleigh correlation for the heat transfer between the solar collector fluid and the wall of the inner tank. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：245 / 256

页数：12