Research On Indoor Thermal Environment And Energy-saving Design Strategy Of Hui-style Residential Buildings

The building area of rural areas in China accounts for about one third of the country.With the gradual promotion of building energy conservation by the state,the energy-saving optimization of traditional residential buildings has been paid more and more attention,the main goal of residential energy-saving design is to improve indoor comfort and reduce building energy consumption by replacing green building materials,optimizing plane layout and using renewable resources.As an important school of architecture in China,Hui style dwellings have been enduring for a long time with their unique architectural style.However,the traditional Hui style dwellings preserved now have a long history,and the indoor thermal comfort and daylighting are difficult to meet the requirements of residents.Through the field investigation of Hui style dwellings,it is known that the traditional houses lack thermal insulation measures,and the thermal performance of some envelope structures can not reach the minimum limit in the specification.More residents choose to use air conditioning,electric heating and other equipment,which not only improves indoor comfort,but also increases building energy consumption.Therefore,it is necessary to provide reasonable and efficient energy-saving optimization strategies for traditional Hui style residential buildings.In order to improve the indoor comfort of traditional Hui style houses and reduce building energy consumption,this paper puts forward targeted energy-saving measures to realize the sustainable development of Hui style houses.The energy consumption simulation research is mainly based on DeST software,first,the model is built according to the actual parameters of typical residential buildings,then the relevant parameters such as meteorological parameters and indoor thermal disturbance are adj usted to conform to the actual situation.The annual cold,thermal load and accumulated load of the building before transformation are calculated as the base of energy saving reconstruction.Combined with the climate conditions and economic development level of Huangshan City,the thermal performance is improved by improving the envelope materials.Different energy-saving schemes for exterior walls,windows and roofs are proposed,and 12 schemes are combined by orthogonal test.The energy-saving schemes are compared and analyzed by energy consumption simulation,range analysis and economic analysis,and the factors affecting building energy consumption are ranked,and the scheme with better energy-saving effect and economy is selected as the best energy-saving scheme.Simulate the indoor temperature of the main rooms of the residential houses after the transformation of the best energy-saving scheme and calculate the corresponding PMV.Compared with that before the energy-saving transformation,it is found that the indoor thermal environment of the buildings after the transformation has been significantly improved,which basically meets the requirements of residents for comfort.The research verified that the energy-saving design of traditional Hui style residential buildings can improve indoor comfort and reduce building energy consumption,and help Hui style residential buildings develop in the direction of energy-saving comfort and environmental harmony.