Research On The Optimization Design Of Indoor Thermal Environment Of Passive Heating Building Based On EPS Module

EPS module is a kind of component that is molded from expanded polystyrene and can be used as a building template without dismantling while taking into account the thermal insulation performance.It is widely used in rural areas of our country.Passive solar heating technology does not need to use any mechanical power,and only relies on adding heat-collecting components to the south wall of the building to improve the building’s heat-collecting and heatstoring capacity to increase indoor heating heat.Combining the characteristics of the two types of building technologies,the construction of passive solar energy buildings with EPS modules can not only effectively reduce the energy consumption of buildings for heating in winter,but also improve the indoor thermal environment.However,affected by the construction form and construction practices of EPS modules,the indoor thermal environment of the building has poor stability and is prone to large fluctuations in room temperature.Phase change material is a high heat storage material that will change its phase state in a specific temperature range.It can be combined with the EPS module passive solar building exterior wall to form a wall with higher heat storage performance and give full play to its absorption.The heat release characteristics are used to solve the defects of unstable indoor thermal environment and improve the comfort of indoor thermal environment.Based on this,this research uses the methods of literature analysis,experimental testing and software simulation to discuss and study the mechanism of the indoor thermal environment of the EPS module passive solar building using phase change materials,and propose architectural design strategies.The specific research contents are as follows:（1）Conduct on-the-spot research on the construction of EPS module passive solar buildings and indoor thermal environment,and extract typical self-built farm houses.Build a1:5 simplified scale model of a typical farm building for actual testing.The results show that the phase change material can effectively improve the indoor thermal environment of the EPS module passive solar building.It can avoid the room temperature overheating at noon and the room temperature dropping too much at night.Increase the average room temperature of the building and reduce the waste of solar energy resources.（2）Based on the above research and experimental results,referring to the relevant regulations of EPS modular buildings,passive solar buildings and other relevant regulations,two types of EPS module passive heating building physical models for typical rural self-built houses that meet actual requirements are constructed: direct benefit type and heat collection wall.The influencing factors and the value range are determined from the two aspects of the climate environment and the design parameters of the building envelope.（3）SPSS is used to conduct sensitivity analysis on the determined influencing factors,and the priority of each factor is determined;the improvement rate of room temperature,the increase of room temperature comfort time,and the temperature difference between winter solstice and winter solstice are selected as the evaluation criteria,and the Design Buildier software is used to simulate and simulate the simulation results.The results are sorted and analyzed,and the design strategy of EPS cavity module passive solar heating building based on phase change material is proposed.The research results show that the improvement effect is significant in some areas in severe cold and cold regions,the improvement potential is greater in areas with rich solar energy resources,and the improvement effect in areas rich in solar energy resources is the best.The direct benefit type and the heat collection wall type in severe cold areas are suitable for ultralow energy consumption modules,the direct benefit type in cold areas is suitable for ordinary modules,and the heat collection wall type is suitable for ultra low energy consumption modules.The optimal phase change temperature of the direct benefit solar building is 3°C higher than the average room temperature in the heating season.The optimal phase change material thickness is 20 mm.The area ratio should increase the insulation measures of the night window part.T The optimal phase change temperature of phase change mortar in the severe cold area of the solar collector wall type solar building should be 1.5°C higher than the average indoor temperature during the heating period,and 4.0°C higher than the average indoor temperature during the heating period in the cold area.The area of the ventilation openings of the collector wall should not exceed 3% of the area of the thermal storage wall.In summary,this thesis proposes a low-carbon,environmentally friendly and effective architectural design strategy that can be used to improve the indoor thermal environment of EPS modules passive solar buildings,and explores the advantages and disadvantages of various important influencing factors on the improvement effect,and puts forward reasonable suggestions.,to provide useful support for the promotion and development of energy-saving and low-carbon buildings such as EPS modules in my country,and to provide a certain reference for parameter selection in the early stage of building design.