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基于结构热阻的辐射顶板换热性能评价方法

发表时间:2018-01-31  浏览量:1114  下载量:101
全部作者: 张莉莉,周翔,罗茂辉,汤晟怡,张旭
作者单位: 同济大学机械与能源工程学院
摘 要: 辐射末端结构类型对其换热性能的影响很大,然而现有的辐射末端换热性能评价方法中缺乏能够反映结构影响的参数。本研究基于辐射末端传热模型提出结构热阻的概念,并通过实验测试对比分析4种辐射顶板的结构热阻值。结果表明,结构热阻可以较好地反映不同结构类型的辐射顶板换热性能,并且基于结构热阻的预估结果可以满足工程应用的精度要求。
关 键 词: 市政工程;辐射末端;辐射顶板;结构热阻;换热性能;工程应用
Title: Evaluation on heat transfer performance of radiant ceilings based on structural thermal resistance
Author: ZHANG Lili, ZHOU Xiang, LUO Maohui, TANG Shengyi, ZHANG Xu
Organization: School of Mechanical Engineering, Tongji University
Abstract: Heat transfer performance of radiant terminals is strongly affected by their structure. However, lack of parameters which can reflect the influence of different structures is a drawback of existing methods for evaluating heat transfer performance of radiant terminals. This paper introduces the concept of structural thermal resistance based on radiant terminals heat transfer model. After several experiments, feasibility of this novel concept is confirmed and the structural thermal resistance values of four common radiant ceilings are obtained and analyzed. The structural thermal resistance can reflect the heat transfer performance of different structure types. Meanwhile, the predicted results based on structural thermal resistance can meet the accuracy requirements of engineering application.
Key words: municipal engineering; radiant terminal; radiant ceiling; structural thermal resistance; heat transfer performance; engineering application
发表期数: 2018年1月第2期
引用格式: 张莉莉,周翔,罗茂辉,等. 基于结构热阻的辐射顶板换热性能评价方法[J]. 中国科技论文在线精品论文,2018,11(2):187-193.
 
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