Study on Indoor Thermal Environment of Traditional Dwellings in the Watery Town in Suzhou in Winter

Abstract

Traditional dwellings have their own characteristics and values in the construction of indoor thermal environment. In order to analyze the current situation of thermal environment of dwellings in Southern Region of the Yangze River. This paper takes traditional dwellings in the watery town in Suzhou as the research object, and studies the indoor thermal environment in winter through field measurement of indoor and outdoor temperature and relative humidity of dwellings in winter, questionnaire survey and PMV-PPD thermal evaluation system. The results show that the average indoor temperature is 7.5°C, humidity of residential is 72%, the average predicted thermal sensation vote is -2.79, the predicted dissatisfaction is over 90%, and the indoor thermal environment dissatisfaction in public questionnaire survey is 20.83%, which is far from the predicted dissatisfaction PPD. It shows that the vote of hot feeling underestimates the residents' tolerance for the environment, and corrects the deviation of PMV value through adaptive coefficient. The revised aPMV value is greater than PMV value, but the thermal and humidity environment level is still Class III, which does not meet the living conditions. Water source heat pump can be used as a heating method in winter to improve the thermal environment, which can provide reference for improving indoor thermal environment of residential buildings in water towns.