辐射供暖系统响应时间对比分析

Radiant Heating Contrasting Analysis on System Response Time

为分析长江流域辐射供暖间歇运行的可行性,对重庆地区空气源热泵常规地板辐射供暖系统和毛细管网辐射系统进行实验,分别在三种不同供水温度、三种不同流量下,对其热响应时间进行对比。结果表明:相同条件下,从辐射表面温度的角度,毛细管网系统的响应时间为3.2 h,温度极值为27.6℃。常规地暖系统未达到设定温度,极值为21.6℃。从室内空气温度的角度,毛细管网系统的响应时间为3.2 h,温度极值为18.3℃。常规地暖系统的响应时间为5.3 h,温度极值为16.6℃,均满足规范要求。毛细管网相比常规地暖热响应时间减少40%,毛细管网系统的单位时间温升高于常规地暖系统71%。

To analyze the feasibility of intermittent operation of radiant heating in the Yangtze River Valley, the air source heat pump conventional floor radiant heating system and capillary net radiation system experiment in Chongqing,respectively from three different water supply temperature, and under three different flow, to compare the system response time. The experimental data, which indicated that under the same condition, from the surface temperature perspective, capillary net radiation system’s response time is 3.2 h, and the surface temperature can reach 27.6 ℃ when the conventional heating system can just reach 21.6 ℃ that not reach the setting temperature. From the indoor air temperature perspective, capillary net radiation system’s response time is 3.2 h, and the indoor temperature can reach18.3 ℃ when the conventional heating system can just reach 16.6 ℃ and its response time is 5.3 h, which satisfy the standard request. The system’s response time of capillary net radiation system is 40% shorter than that of conventional heating system, and the temperature rise per unit time of capillary net radiation system is 71% higher than that of conventional heating system.