Research On Indoor Thermal Environment Of Farm Houses In Handan Plain In Winter

At present,with the proposal of China’s Rural Revitalization strategic planning,building a new socialist countryside has become an important development trend.However,most of the rural houses in China are self built houses.Due to the constraints of economic conditions and the lack of corresponding energy-saving design standards and theoretical guidance,the construction level is relatively backward compared with the city,and the thermal performance of the enclosure structure of rural houses is poor,As a result,the indoor heat loss in winter is large,and the indoor thermal environment is poor,which can not meet the normal needs of human body.On the other hand,with the deepening of the new rural construction,the living standards of farmers have been improved,and the indoor thermal environment and comfort of rural houses also have higher requirements.Therefore,how to keep the indoor thermal environment in a comfortable range and reduce the energy consumption to the minimum is an urgent problem to be considered and solved.In this thesis,shangbi rural house in Handan plain area is taken as the research object.Firstly,the existing thermal environment assessment methods are discussed and combed.According to the characteristics and application scope of the main thermal environment assessment standards at home and abroad,whether they are suitable for rural houses is compared and verified,and the indoor thermal environment assessment method suitable for the characteristics of rural houses in Handan plain area is selected.Secondly,through the investigation of rural houses in Handan plain area,we know that due to the lack of understanding of indoor environment comfort,energy saving and economic foundation,there are some problems in rural houses in this area,such as high floor height,large shape coefficient,high heat transfer coefficient of envelope structure and serious energy loss.Based on the field investigation and data analysis of clothing resistance in rural areas of Handan plain,the value of clothing thermal resistance in winter is 1.92 clo.Thirdly,the indoor thermal environment of rural houses in Handan plain was measured.Eight typical farmhouses of different ages in shangbi town of Handan plain were selected to test and record the indoor thermal environment of the main rooms and bedrooms of the above eight farmhouses for four consecutive days in winter cold days.The results show that the indoor temperature range of farmhouses in Handan plain in winter cold days is 6 ℃-18 ℃.Finally,this thesis uses the building energy consumption simulation software Energy Plus to model and simulate the typical rural houses in Handan plain area.Through the single factor analysis method and the expert scoring method introduced in the third chapter,the influencing factors of winter heating energy consumption in Handan plain area are screened,and six higher influencing factors are obtained: roof structure,external wall structure,building storey height,external window heat transfer coefficient,floor height,floor height and floor height Through the analysis of range and variance,the primary and secondary order of the six influencing factors of winter energy consumption,the optimal level matching scheme and the significance level of each factor for winter heating energy consumption are obtained.In this thesis,the indoor thermal environment of Handan plain in winter is measured,and the temperature range within the comfortable range is obtained.Through the simulation of Energy Plus software and combined with the comprehensive analysis of local economic conditions and farmers’ living habits,the optimal design scheme of rural houses in Handan plain is put forward,which is not only in line with the comfort of indoor thermal environment,but also in line with the lowest heating energy consumption in winter,It provides data reference for indoor thermal comfort environment and energy consumption of rural houses in cold areas,as well as the design of green rural houses.