Heat Transfer And Heat Analysis And Air Conditioning Load Calculation Of Oval Building With Glass Cover

Glass curtain wall architecture can bring high-end and bright artistic beauty.Nowadays,more and more solar house buildings,sun room buildings and glass-covered buildings are popular and continue to appear.In the southern region of my country,such glass curtain wall buildings often cause problems such as indoor greenhouses,indoor overheating,and increased indoor air conditioning load in summer.In view of the above problems,this paper focuses on the elliptical glass-covered building,and uses a combination of theoretical analysis,data testing,and load calculation to solve the problems of heat transfer and heat gain and air-conditioning load calculation of the glass-covered building.The research can provide a theoretical basis for the rational design of glass-enclosed buildings and the energy saving of air conditioning.First,this paper analyzes the heat transfer heat gain and thermal law of the glass-covered building by testing the thermal parameters of the glass-covered building.Then,the load error relationship between the elliptical building and its evolved building is studied,and a simplified calculation method for the elliptic building air conditioning load is obtained.Finally,by comparing the air-conditioning load of an elliptical building and a glass-enclosed oval building,the amount of air-conditioning load added to the building by the glass enclosure and its impact are discussed.Through the above research,the following conclusions are drawn:(1)Test the thermal parameters of the glass-enclosed building in summer and analyze the heat transfer and heat law of the building.The results show that the average temperature of the corridor of the glass-enclosed building is the largest in summer,and the maximum temperature of the corridor can reach 49.4?,and the maximum temperature and humidity of the corridor will appear earlier than the outdoor temperature and humidity.The corridor and indoor temperature will be higher than the outdoor temperature for a long time.The average indoor relative humidity will be greater than 65%.Studies have shown that the addition of a glass cover in southern China during the summer will deteriorate the indoor thermal and humid environment of the building,and the building will continue to experience high temperature and high humidity overheating.(2)Study the load error relationship between the elliptical building and its evolved building.The results show that under the condition of keeping the side area and height of the elliptical building unchanged,reducing the evolutionary deformation according to the orientation ratio will increase the cooling load of the elliptical building,otherwise it will reduce the cooling load of the building.And the elliptical building increases the evolutionary deformation and decreases the evolutionary deformation according to the direction ratio,the relative load error will increase.When the elliptical building evolves into a "similar building" to calculate the cold load of the envelope,the shape load error percentage will be between 3.5% and 6.5%.The cold load of the envelope structure of an elliptical building can be simplified by constructing a "similar building" method.The above research results can provide new ideas and new methods for the calculation of air-conditioning load of elliptical buildings.(3)Study the influence of the glass cover on the building air conditioning load.The results show that the glass cover will increase the heat transfer and cooling load of the building wall by an average of 40.9%,the instantaneous heat transfer and cooling load of the window by 53.5%,and the integrated cooling load by an average of 13.3%.That is,the addition of the glass cover will directly increase the heat transfer and cooling load of the building envelope structure,so that the internal building air conditioning load increases and the air conditioning energy consumption increases.The above research results can provide theoretical reference and guidance for air conditioning load calculation and air conditioning energy saving of glassenclosed buildings.(4)To construct a "similar building",calculate the air-conditioning load of the elliptical building as 28395.8 W,and calculate the air-conditioning load of the glass-covered elliptical building as 32180.8 W through the steady state and the unsteady state.