辐射制冷材料军用帐篷内热舒适性的实验研究

Experimental study on thermal comfort of military tent made of radiation refrigeration materials

为了研究辐射制冷材料应用于军用帐篷对帐篷内环境热舒适的改善效果,将辐射制冷材料制成的降温帐篷与普通军用帐篷作对比,在夏季太阳照度充足的时间进行现场实验,测量了两种帐篷的外表面及内部空气温度,并结合WBGT(wet bulb globe temperature)、TSV(thermal sensation vote)及TCV(thermal comfort vote)等热舒适评价指标比较二者内部环境的热舒适情况。实验结果表明:在实验持续3 h,室外温度为34.0℃、总太阳辐射强度为743 W/m^(2)的情况下,相较于普通军用帐篷,辐射制冷帐篷表面温度可降低6.9℃,从而低于周围空气温度;帐篷内部空气温度可降低4.3℃,达到32.9℃;WBGT由32.1降低到28.1℃,可降低4.0℃。由WBGT、TSV及TCV的比较结果显示,帐篷内的热舒适情况得到了显著的改善。

In order to evaluate the thermal comfort improving in military tents made of radiative cooling materials, a military tent made of radiative cooling materials and an ordinary military tent were compared experimentally. The experiment was carried out in summer with sufficient solar illumination. The outside surface temperature and internal air temperature of two military tents were measured. The thermal comfort indexes of environments in the two tents were compared by WBGT, TSV and TCV. The experimental results show that when the experiment lasts for three hours, the outdoor temperature is 34 ℃ and the total solar radiation intensity is 743 W/m^(2), compared with the ordinary military tent, the surface temperature of the radiation cooling tent can be reduced by 6.9 ℃, which is lower than the surrounding air temperature;The air temperature inside the tent is 32.9 ℃ that can be reduced by 4.3 ℃. WBGT can be reduced by 4.0 ℃ from 32.1 to 28.1 ℃. The comparison results of WBGT, TSV and TCV show that the thermal comfort in the tent has been significantly improved.