低温地板辐射与低温层式通风耦合供暖模式热性能实验研究

Experimental Investigation of the Thermal Performance on the Low-temperature Radiant Floor Coupled with Low-temperature Stratum Ventilation under Heating Mode

随着COVID-19病毒的爆发,舒适、健康的室内环境成为了新的研究焦点。针对传统供暖模式所展示出的缺陷,本研究提出了1种新型的低温地板辐射与低温层式通风耦合供暖模式,并对其热性能、室内热舒适性以及污染物代谢能力进行了对比实验研究。研究结果表明:在相同能耗下,本研究所提出的新型耦合供暖模式相对于其他2种常规采暖模式下的操作温度分别高出0.78℃与0.88℃;室内PMV垂直分布更加均匀,且头足敏感区舒适性强于常规供暖模式;二氧化碳去除效率可高达2.08,大大缩短污染物停留时间,降低人体暴露率。因此本研究所提出的低温地板辐射与低温层式通风耦合供暖模式可以在高浓度室外环境下提供1个舒适、健康的室内环境,具有较大的供暖节能潜力与应用前景。

With the outbreak of the COVID-19 epidemic,how to create a comfortable and healthy indoor environment has become a hot topic. Based on the drawbacks of the traditional heating modes,a new lowtemperature radiant floor coupled with low-temperature stratum ventilation under heating mode was proposed,with its thermal performance,indoor thermal comfort and pollutants metabolism ability being investigated through experimental comparison. The results show that with the same energy consumption,the operative temperature of the coupling heating mode is 0. 78 ℃ and 0. 88 ℃ higher than the other two conventional heating modes respectively;the vertical distribution of indoor PMV is more uniform,with the thermal comfort of the head and foot area better than that of the conventional heating modes;the removal efficiency of CO2 can be as high as 2. 08,which greatly shortens the pollutant retention time and reduces human exposure rate.