Research On The Energy Conservation Optimization Of Retaining Structure Of Small Scale University Gymnasiums In Southern Hebei Province

At the present stage,energy shortage is a problem that China and the world must face together.In China,the energy consumption of the construction industry accounts for more than 27% of total social energy consumption,and the growth rate of 1% per year continues to rise.As a basic social service facility,the gymnasium is particularly prominent in terms of energy consumption.If the gymnasium with large space and large number can take measures to save energy and reduce consumption,it will make great contributions to building a resource-saving society in China.University gymnasium is an important part of campus architecture.Most of the gymnasiums have great potential in energy conservation.Because those have been built for a long time and the thermal performance of the envelope structure is lower than the current energy-saving design standards.At present,a large number of small stadiums in universities.Through the data measurement and simulation analysis of the case gymnasium,this study draws an energy-saving optimization strategy for the small gymnasium enclosure structure in universities,and provides reference for the energy-saving optimization of the outer small gymnasium in the future.Based on the investigation of university gymnasiums,this study selects the typical architectural structure,comprehensive functions and frequent use in Jinan as a research case,and conducts energy-saving optimization research on the enclosure structure of the university.Based on the measurement of the indoor temperature and the wall temperature of the enclosure structure in the University Gymnasium,the principal component analysis method was used to analyze the influence factors of the indoor temperature changes in the indoor wall of the gymnasium,and the enclosure structure was analyzed.Calculation and comparison analysis of heat transfer in each part.Both of the above methods show that different types and different orientations of the enclosure have different effects on the indoor thermal environment and building energy consumption.The results show that the external window has the greatest influence from the comparison of wall temperature influence factors and heat transfer,followed by roof and peripheral retaining wall.In the gymnasium of the thickness of the insulation layer,the window to wall and the type of exterior window and the thickness of the roof insulation layer of the different protective walls facing the stadium,the influence law of the various parts of the enclosure on the energyconsumption of the building is explored.Therefore,the single energy-saving optimization optimal strategy of the outer wall,the window and the roof is summarized,including the optimum thickness of the outer wall insulation layer,the window-wall ratio of the outer window type and the optimal thickness of the roof insulation layer.The energy-saving effect of the two-factor working condition obtained by the double-coupling simulation is compared.It is found that the outer window and the roof have the best energy-saving effect,the energy saving rate is30.48%,and the energy saving rate of the outer window and the outer wall is 26.96%and the roof.The energy saving rate with the external retaining wall is 21.0%.Through multiple coupling simulations,the energy-saving effect of all-factor conditions is obtained.It is found that the largest proportion of the building energy consumption is the outer window,the energy saving rate is 17.01%,followed by the roof energy saving rate of 11.04%,and the energy saving rate of external wall protection is 7.52%.Therefore,in the energy-saving optimization of the small gymnasium enclosure structure,the different effects of different envelope structures on the energy-saving effect should be considered,and the exterior window part transformation should be considered,followed by the roof and the outer wall protection.