Research on Summer Microclimate Thermal Comfort of Park in Hot Summer and Warm Winter Area Based on Comfa Model

There are few hot summer and warm winter regions.A study was conducted to determine the various characteristics of the hot Spring park's microclimate. Taking Fuzhou Hot Spring Park as an example, the microclimate comfort and its influencing factors of parks in hot summer and warm winter areas was studied. The hot spring park was divided into 12 areas, and the microclimate elements and related environmental elements were measured for 3 days. Besides, the comfort questionnaire survey was carried out. The results showed that The results show that the regions with the most abundant natural environment elements have the most abundant microclimate changes. Spearman correlation analysis found that solar radiation and air temperature were significant factors affecting microclimate in hot summer and warm winter regions. Secondly, using the Comfortable Formula (COMFA) model, the human energy budget of different comfort levels in summer was obtained based on the univariate cubic regression equation, and when it is ≤84 W/m2, it can meet the requirements of microclimate comfort. Finally, among other environmental factors, only canopy closure has a significant correlation with microclimate comfort. This study provide a reference for improving the microclimate comfort of parks in hot summer and warm winter areas .