Study On Thermal Comfort Of Kitchen Environment Of Nearly Zero Energy Residential Building In Severe Cold Zone

The indoor thermal and humid environment and thermal comfort of kitchen are the key issues in the current nearly zero energy buildings(NZEB)environment.At present,most of the existing related studies were the research on thermal environment measurement and thermal comfort of different types of buildings in different climate zones,as well as the practical analysis on the thermal environment of NZEB in different climate zones.There were relatively few studies on the thermal comfort of NZECB in severe cold zone,while there was no relevant research on the thermal comfort of kitchen environment of NZEB in severe cold zone.This paper was to solve the poor thermal comfort of household kitchen in NZEB in cold zone,and the type of optimization was put forward,and put forward the research based on the real-time monitoring of physiological parameters of kitchen cooking personnel acquire real-time access to the kitchen environment temperature and thermal comfort of personnel.In order to realize the dynamic and intelligent control of the kitchen thermal environment.This project was based on a kitchen thermal comfort field research of NZEB in severe cold zone.Firstly,objective parameters of thermal and humid environment,subjective thermal sensation vote of the subjects and real-time physiological parameter data of the subjects were monitored and collected in the field measurement study.Then,based on the field datas,this paper analyzed the indoor thermal and humid environment creation effect of the household kitchen in the NZEB in the severe cold zone with the direct air supplement of outdoor air.Then,the applicability of the typical PMV/TSV model in the kitchen of NZEB in cold zone was studied.Based on the results,the optimization and modification of the thermal comfort model for the kitchen of NZEB in cold zone were studied.Finally,based on the objective physiological parameters of the subjects,the correlation between the changes of physiological parameters of the subjects and the changes of indoor thermal environment of the kitchen and the changes of thermal comfort of the cooking staff was explored,so as to find an effective and sensitive theoretical basis for intelligent control of indoor ambient temperature based on the monitoring values of physiological parameters.The results of this study showed that the distribution of thermal and humid environment in the kitchen of NZEB was obviously uneven.The outdoor air supply in the kitchen had the greatest influence on the thermal environment at the ankles,which intensified the heterogeneity of the environment.e PMV model based on expectation factor modification(expectation factor e=0.42)could relatively effectively predict the thermal comfort of the household kitchen environment of NZEB in severe cold regions.Based on the correlation between EDA,HRV,EMG and RESP of cooking personnel and the changes of kitchen thermal environment and cooking personnel’s thermal comfort,the control of indoor ambient temperature and the prediction of thermal comfort based on personnel monitoring physiological parameters had a good effect.The research work in this paper could be applied to the determination and optimization of target monitoring parameters in the environmental control of smart home kitchen to provide a useful reference.