[1]马 超,刘艳峰,王登甲,等.低温热水辐射地板动态散热特性研究[J].西安建筑科技大学学报:自然科学版,2014,(03):416-421,448.[doi:10.15986/j.1006-7930.2014.03.020]
 MA Chao,LIU Yanfeng,WANG Dengjia,et al.Study on dynamic heat dissipation characteristics of low temperature hot water radiant floor[J].J.Xi’an Univ. of Arch. & Tech.:Natural Science Edition,2014,(03):416-421,448.[doi:10.15986/j.1006-7930.2014.03.020]
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低温热水辐射地板动态散热特性研究()
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西安建筑科技大学学报:自然科学版[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2014年03期
页码:
416-421,448
栏目:
出版日期:
2014-06-30

文章信息/Info

Title:
Study on dynamic heat dissipation characteristics of low temperature hot water radiant floor
文章编号:
1006-7930(2014)03-0416-06
作者:
马 超 1刘艳峰1王登甲1刘加平2
(1. 西安建筑科技大学环境与市政工程学院,陕西 西安 710055;2. 西安建筑科技大学建筑学院,陕西 西安 710055)
Author(s):
MA Chao1 LIU Yanfeng1 WANG Dengjia1 LIU Jiaping2
(1. School of Environmental and Municipal Engineering, Xi’an Univ. of Arch. & Tech., Xi’an 710055, China; 2. School of Architecture, Xi’an Univ. of Arch. & Tech., Xi’an 710055, China)
关键词:
辐射地板散热特性表面温度温度变化率
Keywords:
radiant floor heat dissipation characteristic surface temperature temperature change rate
分类号:
TU832.1
DOI:
10.15986/j.1006-7930.2014.03.020
文献标志码:
A
摘要:
根据地板二维非稳态散热过程数值分析发现,在常用辐射供暖地板结构下,系统停止运行后13 h 左右,地板散热趋于稳定,20 h 后可认为地板散热过程结束.为了便于工程上辐射地板散热量计算,把地板二维非稳态散热数学模型简化为一维散热数学模型.通过一维解析解与二维数值解对比分析,发现两者差异在1.5%之内.通过对地板散热数学模型求解分析: 获得了系统停止运行后不同填充厚度地板表面平均温度变化率最大值出现时间;填充层厚度越大,地板动态散热越稳定;厚度大于60 mm 时,温度变化率已无明显差异.
Abstract:
According to the numerical analysis of two-dimensional unsteady heat dissipation process of the floor, it’s found that the heat dissipation process of the floor is basically stable around 13 h and is close to the end after 20 h under the common floor structure of the radiant heating. To make engineering calculation convenient, the mathematical model of two-dimensional unsteady heat dissipation is simplified to one-dimension. Comparing the results of one-dimensional analytical solution and two-dimensional numerical simulation, it’s found that the difference of the two results varies from 0.5% to 1.5%. By solving the mathematical model of the floor heat dissipation, the time corresponding to the maximum value of the mean temperature change rate of the floor surface is obtained under different filling thickness, after the systems stop. The thicker the filling more stable is the floor dynamic heat dissipation. When the filling thickness is more than 60 mm, there’s no obvious difference of the temperature change rate.

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备注/Memo

备注/Memo:
收稿日期:2013-12-16 修改稿日期:2014-06-10
基金项目:高等学校博士学科点专项科研基金博导类(20116120110006);陕西省教育厅自然专项基金(2013JK0985)
作者简介:马超(1983-),男,博士研究生,主要从事太阳能热利用及建筑节能研究.E-mail: machao9108@163.com
更新日期/Last Update: 2015-09-01