All-glass vacuum tube collector heat transfer model used in forced-circulation solar water heating system

被引：68

作者：

Li, Zhiyong ^{[1
]}

Chen, Chao ^{[1
]}

Luo, Hailiang ^{[1
]}

Zhang, Ye ^{[1
]}

Xue, Yaning ^{[1
]}

机构：

[1] Beijing Univ Technol, Coll Architecture & Civil Engn, Beijing, Peoples R China

来源：

SOLAR ENERGY | 2010年 / 84卷 / 08期

关键词：

All-glass vacuum tube collector; Heat transfer model; Forced-circulation solar water heating system; Experimental study; TUBULAR COLLECTORS; ABSORBER TUBES; EXTRACTION; MANIFOLDS;

D O I：

10.1016/j.solener.2010.05.001

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：

The aim of this paper is to establish the heat transfer model of all-glass vacuum tube collector used in forced-circulation solar water heating system. In this model, the simplified heat transfer of collector is composed of the natural convection in single glass tube and forced flow in manifold header. Thus the heat balance equation of water in single tube and the heat balance equation of water in manifold header have been established. The flow equation is also built by analyzing the friction and buoyancy in tube. Through solved these equations the relationship between the collector average temperature, the outlet temperature and natural convection flow rate have been obtained. From this relationship and energy balance equation of collector, the collector outlet temperature can be calculated. The validated experiments of this model were carried out in winter of Beijing. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：1413 / 1421

页数：9

共 15 条

[1]

[Anonymous], 2006, SOLAR ENG THERMAL PR

[2]

[Anonymous], 1999, ASHRAE APPL HDB

[3] Natural circulation flow through water-in-glass evacuated tube solar collectors [J].

Budihardjo, Indra ;

Morrison, Graham L. ;

Behnia, Masud .

SOLAR ENERGY, 2007, 81 (12) :1460-1472

[4] THERMOSIPHON CIRCULATION IN SOLAR WATER HEATERS INCORPORATING EVACUATED TUBULAR COLLECTORS AND A NOVEL WATER-IN-GLASS MANIFOLD [J].

HARDING, GL ;

YIN, ZQ .

SOLAR ENERGY, 1985, 34 (01) :13-18

[5] HEAT EXTRACTION EFFICIENCY OF A CONCENTRIC GLASS TUBULAR EVACUATED COLLECTOR [J].

HARDING, GL ;

YIN, ZQ ;

MACKEY, DW .

SOLAR ENERGY, 1985, 35 (01) :71-79

[6] Measurement and simulation of flow rate in a water-in-glass evacuated tube solar water heater [J].

Morrison, GL ;

Budihardjo, I ;

Behnia, M .

SOLAR ENERGY, 2005, 78 (02) :257-267

[7] Water-in-glass evacuated tube solar water heaters [J].

Morrison, GL ;

Budihardjo, I ;

Behnia, M .

SOLAR ENERGY, 2004, 76 (1-3) :135-140

[8]

Ren Z, 1990, J ENG THERMOPHYSICS, V11, P187

[9] Theoretical flow investigations of an all glass evacuated tubular collector [J].

Shah, Louise Jivan ;

Furbo, Simon .

SOLAR ENERGY, 2007, 81 (06) :822-828

[10]

Wang LiTing, 1987, ACTA ENERGIAE SOLARI, V8, P177

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