Research On Heat And Moisture Transfer Of Internal Insulation And Analysis On Building Climate Of Hot Summer And Cold Winter Region

The thermal performance of the building's external envelope is related to the quality of indoor thermal comfort.With the gradual improvement of the living quality of indoor environment,the research on the thermal performance of the building envelope has become more and more important.However,hot summer and cold winter regions in China are densely populated,facing the reality of existing building renovations.How to improve the indoor thermal comfort of buildings while improving the building energy efficiency is particularly important.This paper combines the meteorological parameters of the Yichang area where the author is located and the current status of the existing building envelope structure in Yichang area.The air moisture content and temperature are used as driving forces under stable conditions to calculate and analyze the thermal insulation condensation moisture in the envelope structure.The similarities and differences of condensation inside the building envelopes with different structural layers and different heating and cooling conditions were compared and analyzed.The variation of internal condensation times under different internal insulation structures of the envelope structure was obtained.The condensing calculation software was written in Visual Basic language.It is pointed out that in the hot summer and cold winter climate zone,if the internal thermal insulation structural layer is added during the renovation of the existing building,the internal condensation of the surrounding structure will easily occur during the heating in winter,and the simulation calculation of the refined solution is needed during the transformation.At the same time,using the software programmed by the author,different types of heating and cooling strategies are analyzed,and the meteorological parameters of different regions at home and abroad are compared and analyzed.A possible method for studying meteorological parameters is obtained,which is used to further accurately analyze the hot summer and cold regions.The city's meteorological parameters laid the foundation.Under the condition of indoor and outdoor temperature determination,the multi-heat transfer and the existing one-dimensional thermal bridge calculation method were compared and analyzed by using the thermal bridge simulation software Psi?Therm,and the heat transfer coefficient of the thermal bridge was evaluated.The process plays an important role,and the evaluation method of the thermal bridge in the self-insulation peripheral protection structure system commonly used in Yichang area is preliminarily obtained.