| 摘要: |
| 空气源热泵毛细管地板辐射供暖系统以制冷剂为热媒直接加热地板，具有系统简单、传热效果好的优点。本文搭建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 ℃，2cm厚水泥地板表面温差可达4.2 ℃；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。 |
| 关键词: 空气源热泵 毛细管 地板辐射 制热性能 |
| DOI： |
| 投稿时间：2023-09-27修订日期：2023-10-30 |
| 基金项目:本文受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。 |
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| Experimental Study on Capillary Floor Radiation Heating System with Air Source Heat Pump |
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| Abstract: |
| The air source heat pump capillary radiant floor heating system directly heats the floor with refrigerant as the heat medium, which has the advantages of simple system and good heat transfer effect. In this paper, an experimental device of capillary floor radiant heating with air source heat pump is built, and the heating experiment of parallel capillary floor radiant ends is carried out at different outdoor ambient temperatures. The experimental results show that the lower the outdoor temperature, the longer the time required for the temperature stability of the capillary floor radiation end. When the outdoor temperature is -5 °C, the stability time is 120 min; the temperature difference between the exhaust inlet end and the condensate outlet end on the same capillary wall is large. The temperature difference on the capillary wall can reach 6.40 °C, and the temperature difference on the surface of the 20 mm thick cement floor can reach 4.20 °C. The vertical temperature difference from the capillary wall to the cement floor surface is small, not exceeding 0.40 °C, and the vertical heat transfer effect of the floor is good. The temperature difference at the same position of different capillaries is within 0.80 °C, and the temperature uniformity is good. When the outdoor temperature is-5 °C, the heating COP of the unit can reach 4.6 with a good heating performance. |
| Key words: air source heat pump capillary floor radiation heating performance |
