Thermal Comfort of Traditional Village Public Space Based on Numerical Simulation
This paper takes traditional villages around Chaohu Lake as the research object.Through field measurement and ENVI-met numerical simulation,the influences of water,greenery and underlying surface materials on village thermal comfort and microclimate reg-ulation are demonstrated.Physiological equivalent temperature PET is used to evaluate outdoor thermal comfort.The results show that:(1)The ENVI-met numerical simulation can simulate the public space microclimate well,the root mean square error of temperature(RMSE)is between 0.51~0.98 ℃,and the humidity is between 2.39%~3.63%;The mean absolute percentage error(MAPE)of tem-perature is between 1.49%~2.37%,and the humidity is between 3.85%~6.23%,both of which are within the allowable error range.(2)The water body has a positive impact on the improvement of outdoor thermal comfort,and the physiological equivalent temperature of the simulation scheme without water body increases by 3.32 ℃ compared with the same period last year.(3)The combination of rich green space and low reflectivity paving can reduce the physiological equivalent temperature by 1.05 ℃.(4)Improving the green space rate is the most effective way to improve outdoor thermal comfort.Research shows that the protection and improvement of water bodies,enriching greening space,reducing the hardening of the underlying surface,and using low-reflectivity paving materials can effectively improve thermal comfort.