间歇用能特征下的干湿式地板辐射供暖热性能对比  

Comparative study on the thermal performance of dry and wet radiant floor heating under the characteristics of intermittent energy use

作　　者：周文杰 朱文涛 朱懿德 李涛 ZHOU Wenjie;ZHU Wentao;ZHU Yide;LI Tao(School of Urban Construction,Wuhan University of Science and Technology,Wuhan 430065,China)

机构地区：[1]武汉科技大学城市建设学院,湖北武汉430065

出　　处：《西安工程大学学报》2023年第6期26-33,共8页Journal of Xi’an Polytechnic University

基　　金：湖北省大学生创新创业训练计划项目(S202310488066);湖北省教育厅科学研究计划青年人才项目(Q20221110);建筑节能安徽省工程技术研究中心开放课题(AHJZJN-2021-04)。

摘　　要：针对间歇供暖应用背景下干湿式地板辐射供暖形式选择的问题,建立2种地板辐射供暖的传热数学模型,并通过实验验证了传热数学模型的准确性。利用CFD模拟仿真方法,通过改变管间距、填充层厚度以及供暖间歇时间等因素分析2种地板的散热特性。结果表明:填充层厚度对干式地板的热性能影响较小,主要影响湿式地板的散热速率,管间距对2种地板散热速率的影响较小,温度随管间距增大而降低。在不同间歇供暖方案下,当室外温度为8℃、室内初始温度为12℃、盘管平均温度为40℃时,干式地板温度比湿式地板高1.2~2.9℃,室内空气温度高0.5~1.3℃。干式地板不适用于供暖时间较短的间歇方案。过长或过短的间歇方案在夜间无法长久维持在舒适温度区间内,2种地板辐射供暖采用开机12 h的间歇方案运行效果较好。In order to compare and analyze the thermal performance of dry and wet radiant floor heating in intermittent heating mode,the mathematical theoretical analysis models of heat transfer of two types of floor heating were established,and the accuracy of the models was verified by experiment.The method of CFD simulation is used to analyze the heat dissipation characteristics and thermal comfort of the two floors processes by changing the pipe spacing,the thickness of the filling layer and the heating interval time.The results show that the thickness of the filling layer basically has no effect on the thermal performance of dry floor heating,but mainly affects the heat dissipation rate of wet floor heating.The pipe spacing has little effect on the heat dissi-pation rate of the two types of floor and the temperature decreases with the increase of pipe spac-ing.Under different intermittent heating schemes,when the outdoor temperature is 8℃,the in-door initial temperature is 12℃,and the average temperature of the floor heating coil is 40℃,the temperature of dry floor heating is 1.2~2.9℃higher than that of wet floor heating,and the indoor air temperature is 0.5~1.3℃higher than that of wet floor heating.Dry floor heating is not suitable for intermittent program with short heating time.Too long or too short intermittent program can not be maintained in the comfort temperature range for a long time at night,and two types of radiant floor heating using the intermittent program of 12 h can achieve better oper-ating results.

关 键 词：间歇供暖 热性能 地板辐射供暖 室内热环境 

分 类 号：TU832.1[建筑科学—供热、供燃气、通风及空调工程]