Research On Using Solar Energy To Improve Indoor Thermal Environment Of Rural Residences In Daqing Area

With the development of Chinese rural economy and the improvement of people’s living standards,residents have put forward higher demands for the comfort of the indoor environment of rural residence.However,the poor thermal performance of the existing rural residence enclosure structure not only affects the indoor thermal environment,but also leads to an increase in building energy consumption.As a form of energy-saving optimization that passively utilizes solar energy to improve the indoor thermal environment of rural residence,attached sunspace are widely used in rural areas of China.However,the indoor air humidity in the rural residence with the sun room is excessive,and the temperature varies widely,which cannot meet the residents’ requirements for a comfortable indoor thermal environment.Solar air collector,as an active use of solar energy,is one of the effective means to realize the efficient utilization of solar energy,improve the indoor thermal environment and reduce the energy consumption of buildings.In this paper,attached sunspace and solar air collector are taken as the research objects to carry out the research on using solar energy to improve the indoor thermal environment..First of all,the typical forms of rural residence in Daqing area were obtained through investigation,and the indoor thermal environment of rural residence was simulated through Energyplus modeling,to analyzes the current situation of indoor thermal environment in to evaluate the performance of using solar energy to improve the indoor thermal environment of rural residences.Secondly,improve the thermal insulation performance of rural residential building envelope,and on this basis,study the influence of additional solar room glass envelope,window wall ratio,heat storage wall structure,as well as solar air collector transparent cover plate,heat absorbing plate solar absorption rate and insulation layer thickness on the indoor thermal environment of rural residential building;Finally,according to the indoor thermal environment,building energy consumption,economy and environmental benefits to evaluate the performance of using solar energy to improve the indoor thermal environment of rural residences.The specific research content is as follows:1.Based on the survey results of rural residence in Xingshugang Village,analyze the current situation of rural residence enclosure structure and solar energy utilization.In order to understand the current situation of the indoor thermal environment of the rural residence,Energy Plus software was used to build a typical rural residence model,and the changes in the indoor thermal environment of the typical rural residence during the heating period and the coldest day were analyzed.2.Establish a rural residence model with traditional additional sunlight room,and analyze the influence of traditional additional sunlight room on the indoor thermal environment of the rural residence.Analyzing the influence of the traditional glass enclosure structure of the additional sunshine room,thermal storage wall and window-wall ratio on the indoor thermal environment of the rural residence and optimizing the parameters.It is found that the indoor thermal environment of the rural residence with the additional sunshine room is not ideal.3.In order to further improve the indoor thermal environment,a rural residence model with an additional sunshine room with solar air collectors is established.Optimize the solar air collector glass cover,the solar absorption rate of the heat absorption plate and the thickness of the insulation material to improve the heat collection efficiency of the collector,and propose a form of solar air collector suitable for the Daqing area.The influence of the optimized solar air collector on the indoor thermal environment is analyzed.4.Based on the above optimization results,the indoor thermal environment,building energy consumption,economy and environmental benefits of rural houses before and after solar energy utilization were studied.The research results of this paper can provide certain theoretical and data support for the future research on using solar energy in rural residence in Daqing area to improve the indoor thermal environment and reduce building energy consumption.