Thermal comfort in winter sleeping environment of rural houses with heated kang in severe cold zone

 Carries out a field test and subjective questionnaire survey on the winter sleeping environment in 29 rural houses in a village of Heilongjiang province. Continuously tests the skin temperature of 4 residents in 2 households during sleep. Obtains the model of thermal comfort evaluation for the sleeping environment in rural houses with heated kang and the comfortable skin temperature of various parts of the human bodies, and carries out a thermal adaptation analysis. The results show that the mean indoor air temperature in winter sleeping environment in rural houses with heated kang is 12.8 ℃. However, the sleep quality of the subjects is high, and most of them are satisfied with the environment. Compared to urban subjects, the skin temperatures of rural subjects are slightly higher at the same comfortable level, which is mainly due to a high temperature microenvironment of heated kang and bedding. The heating system of heated kang applied to rural houses helps to create a warm sleeping microenvironment around the villagers’ bodies.