Study On The Relationship Between Space Form And Indoor Thermal Comfort Of Village Houses In Western Beijing

At present,the research on the villages in the western Beijing mainly focuses on the social and cultural aspects,but less on the objective physical environment.Due to the current situation of energy shortage in the west of Beijing and the development of "coal reduction and coal substitution",the rural residents in the west of Beijing have limited energy resources to meet the needs of thermal comfort.Limited by the economic level,material and technical conditions are relatively scarce.Therefore,it is necessary to study the space form and other architectural design elements in order to explore the passive design strategy and improve the thermal environment of residential buildings in the west of Beijing.Three typical villages in the west of Beijing are selected for investigation.By using the methods of qualitative analysis and quantitative statistics,the spatial characteristics of residential buildings in the west of Beijing are summarized from the aspects of courtyard form,architectural scale and architectural orientation.Then choose two houses to measure the space form and thermal comfort,evaluate the thermal comfort according to the test results,and discuss the relationship between the space form and thermal comfort qualitatively based on the test results and space form measurement data.Then,using Ladybug + honeybee software to build a performance model of a typical courtyard house,and carry out thermal comfort static simulation,and analyze the correlation between simulation results and test data to verify the reliability of simulation tools and methods.On this basis,taking the courtyard house as the model prototype,using the simulation tools and methods,the dynamic simulation of thermal comfort of changing space form is carried out,and the influence of space form factors such as courtyard type,space layout,section form,body size,roof inclination angle,eave length,window wall ratio on indoor thermal comfort is studied in detail.Through the field quantitative test and analysis,the static model and method calibration,the dynamic simulation results of the model are as follows: the type of residential complex in western Beijing has little influence on the indoor thermal comfort of a single space of the same location scale;the auricle and ceiling structure have obvious improvement on the indoor thermal comfort of the main room,and the increase of the auricles on both sides can reduce the average indoor air temperature of the main room by 1.6 ? in summer and even in winter and season The average air temperature increases by 6.2 ?,and the ceiling structure can reduce the indoor average air temperature by 1.2 ? in summer and 0.9 ? in winter;the building orientation has a great impact on indoor thermal comfort,and the indoor thermal comfort in the north direction space is the best in summer,and the indoor thermal comfort in the east-west direction space is the worst;the indoor thermal comfort in the south direction space is the best in winter,and the indoor thermal comfort in the north-east direction is 36 ° The indoor thermal comfort of space is the worst;the influence of body size(width,depth and clear height)on indoor thermal comfort index shows an exponential change rule,among which the clear height has the most significant influence on indoor thermal comfort;the roof angle has an influence on indoor thermal comfort with ceiling structure,but the influence degree is small,the roof angle increases from 3.6 ° to 45 ° and the average air temperature in summer only decreases by 0.15 In winter,the average air temperature is only reduced by 0.13 ?;the influence of eaves length on indoor thermal comfort index shows a piecewise linear change rule,and the influence degree is large.Increasing the eaves length can improve indoor thermal comfort in summer,but not in winter;the influence of window wall ratio on indoor thermal comfort index shows a linear change rule,and the influence degree is large The larger the ratio of window to wall,the better the indoor thermal comfort in winter,but the worse the indoor thermal comfort in summer.