Simulation of photothermal building and thermal comfort analysis of PMV

Abstract

Abstract Nowadays, with the development of technology and the improvement of human economic level, the energy consumption of buildings is gradually increasing. China is very rich in solar energy resources and the development of solar buildings can save a lot of energy by taking advantage of solar energy resources. The Trombe Wall to be studied in this paper are passive solar buildings. Trombe Wall can achieve good indoor natural ventilation and can meet the requirements of human thermal comfort. However, solar energy is unstable and intermittent, which can easily lead to excessive fluctuations in indoor temperature, so the use of suitable phase change or energy storage materials is also a very important measure. In this paper the mathematical model corresponding to Trombe Wall is specifically investigated and simulations are carried out using COMSOL Multiphysics software to verify the thermal characteristics of Trombe Wall at different temperatures in a given room and the natural ventilation effect they achieve. The simulations are followed by a PMV thermal comfort analysis of the room. The analysis is carried out for four scenarios: “Summer - day”, “Summer - night”, “Winter - day” and “Winter - night”, thus enabling the analysis of Trombe Wall at different temperatures.