| With the popularization of education and continuous improvement of educational conditions,the enrollment rate of students has been significantly increased,the construction scale of primary and secondary schools has been continuously increased,and the requirements for learning environment have been continuously improved.In order to cope with the increasing energy consumption of primary and secondary schools,it is inevitable to strengthen the energy-saving design and transformation of primary and secondary schools.In this article,through in-depth analysis of building energy conservation technology strategy at home and abroad,especially in view of the education teaching building,the main factors influencing the degree of building energy consumption to sum up,one by one,to analyze their advantages and disadvantages and applicability.Resources in shanxi province climate,building type,the basis of the commonly used building materials,fully consider the feasibility and economy of various energy-saving measures put forward suitable for primary and middle schools in shanxi province of teaching building energy conservation technology strategy.Based on the main factors that influence the education teaching building energy consumption analysis,choice of shanxi province as a typical research object,a middle school,the building thermal environment of the primary and secondary schools in the field test,analysis of the reasons for the formation of the teaching building indoor thermal environment.With the measured outdoor environment parameters as the meteorological data,established the Sketchup model of primary and secondary school buildings,building model built by using EnergyPlus to numerical simulation analysis,contrast the measured and simulated conditions of indoor thermal environment,proves the rationality of the model.Analysis are put forward according to primary and secondary school buildings of different energy-saving routes,by optimizing the simulation analysis of exterior wall insulation,roof insulation have been obtained respectively,south window wall ratio,additional sun relations between energy-saving factors impact on building energy consumption;At the same time,the best energy-saving technology strategy is proposed.The following conclusions are drawn:(1)The test results show that the temperature of the adjacent room has a greater impact on the temperature of the black ball in the room,indicating that the comfort of people in the room is related to the temperature of the adjacent room.Outdoor temperature fluctuations,the measured temperature in the room is relatively stable,the average temperature in the classroom during the test period is stable at about 16°C;but in the same weather conditions,the simulated room temperature is stable at about 19°C.In contrast,the teaching building under the best energy-saving strategy has better insulation performance.(2)For the primary and secondary school buildings in Shaanxi Province,the external wall heat transfer coefficient is kept at 0.432W/(K·m~2)and below,the heat transfer coefficient of the roof is kept at 0.360W/(K·m~2)and below,and the external window is transmitted.The thermal coefficient is 2.100 W/(K·m~2)and below.As the window insulation is better,the window wall can be selected between 0.5 and 0.7depending on the actual situation.For additional sunlight,the depth can be between0.6 and 1.2m depending on the actual situation.(3)Through numerical simulation calculations,the best energy-saving strategy with the lowest total energy consumption was selected from more than 300energy-saving strategies as“120mm external wall insulation?120mm roof insulation?0.7 window-wall ratio?0.6m additional sunlight”;The operating condition saves 62.5%of the heating energy consumption relative to the initial operating conditions,and the energy saving effect is obvious.This study will provide some reference for the energy saving design of teaching buildings in other areas. |
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