Experimental Study on Performance of Phase Change Thermal Storage Kang

In this paper, the author build a new type of Kang with paraffin as its heating surface. Paraffin is a kind of phase change material, which can stroage and release heat at a relatively constant temperature. It can make full use of the heat of the smoke in the Kang and extend the Kang heating period. We do comparison test of the the traditional Kang room and the phase change Kang room and related temperature was recorded. The tested result shows that the average temperature of the head, medium and tail of traditional Kang varies greatly, the maximum difference of the temperature is over 20 degrees C. While the average temperatures of the head, middle and tail of the phase change thermal storage Kang are 32.59 degrees C, 28.38 degrees C and 26.12 degrees C, Kang surface temperature distribution is more uniform, which improves the comfort of Kang surface. The indoor temperature with phase change thermal storage Kang shows an upward trend after the fuels burnt out until the wee hours. And the average indoor temperature is 1 degrees C higher than the comparision room. The phase change thermal storage Kang greatly improves the thermal comfort of its heating surface and indoor temperature.