空气源热泵毛细管地板辐射供暖系统实验研究  

Experimental Study on Capillary Floor Radiation Heating System with Air-Source Heat Pump

作　　者：牛建会[1] 王海超 吕天舒 李永亮 Niu Jianhui;Wang Haichao;LüTianshu;Li Yongliang(Hebei Renewable Energy Heating Engineering Technology Center,Hebei University of Architecture,Zhangjiakou,075000,China)

机构地区：[1]河北省可再生能源供热工程技术中心河北建筑工程学院,张家口075000

出　　处：《制冷学报》2025年第1期46-52,166,共8页Journal of Refrigeration

基　　金：河北建筑工程学院博士科研启动基金项目(B-202303),河北建筑工程学院研究生创新基金项目(XY2023052)资助

摘　　要：空气源热泵毛细管地板辐射供暖系统以制冷剂为热工质直接加热地板,具有系统简单、传热效果好的优点。搭建了空气源热泵毛细管地板辐射供暖实验装置,在不同室外环境温度下对平行布置的毛细管地板辐射末端进行供暖实验研究。实验结果表明:室外温度越低,毛细管地板辐射末端温度稳定所需时间越长,当室外温度为-5℃时,稳定时间为120 min;同一根毛细管壁面上排气入口端与凝液出口端温差较大,可达到6.40℃,2 cm厚水泥地板表面温差可达4.20℃;从毛细管壁至水泥地板表面竖向温差较小,不超过0.40℃,地板竖向传热效果良好;不同毛细管的同一位置处温差在0.80℃以内,温度均匀性良好;室外温度为-5℃时,机组稳定运行制热COP可达4.61,性能良好。The air-source heat pump capillary radiant floor heating system directly heats the floor using a refrigerant as the heat transfer fluid,which employs a simple system and promotes good heat transfer.This study developed an experimental device for capillary floor radiant heating with an air-source heat pump,and a heating experiment with parallel capillary floor radiant terminal was conducted at different outdoor ambient temperatures.The experimental results demonstrate that a longer time is required for the temperature of the capillary floor radiation terminal to reach steady as the outdoor temperature decreases.When the outdoor temperature was-5℃,the required time was 120 min.The temperature difference between the discharge inlet end and the condenser outlet end on the same capillary wall was large.The temperature difference on the capillary wall reached 6.40℃,while that on the surface of the 20 mm-thick cement floor reached 4.20℃.Conversely,the vertical temperature difference from the capillary wall to the cement floor surface was small,not exceeding 0.40℃,and the vertical heat transfer effect of the floor was good.The temperature difference at the same position of different capillaries was within 0.80℃,and the temperature uniformity was good.When the outdoor temperature was-5℃,the heating coefficient of performance of the unit reached 4.61 with good heating performance.

关 键 词：空气源热泵 毛细管 地板辐射 制热性能 

分 类 号：TB611[一般工业技术—制冷工程] TU832.16[建筑科学—供热、供燃气、通风及空调工程]