Study On Indoor Thermal Environment Characteristics Of Different Heating Terminal Forms Under Intermittent Operation Mode

Hot summer and cold winter region in China is hot and muggy in summer,cold and wet in winter,which is nearly the coldest area compared with other regions at the same latitudes in the world.With the rapid development of economy and the improvement of people’s living standard,people’s comfort requirements for indoor thermal environment have been constantly improved.Various heating terminal forms and the intermittent operation mode have emerged,and building energy consumption has been continuously improved.Therefore,it is necessary to analyze the dynamic characteristics of indoor thermal environment of different terminal forms,so as to provide reference for heating design.In this paper,an experimental platform with three heating terminal forms(air conditioning,radiant floor and radiator)was built.The dynamic characteristics of indoor thermal environment of different heating terminal forms are experimentally analyzed.The indoor thermal environment differences of various heating terminal forms are quantitatively analyzed from the angles of temperature stratification and fluctuation,temperature response,indoor temperature distribution,composition of heat dissipation and energy consumption level And suggestions for suitable operation mode for each heating terminal are put forward preliminarily.Secondly,aiming at the air infiltration reflected in the indoor thermal environment experiment,the influencing factors of infiltration in heating room are analyzed.The influencing rules to infiltration of door and window airtight degree,temperature difference between indoor and outdoor,and difference of heating terminal forms are summarized preliminarily,and the simple design guidance is put forward.Finally,according to the intermittent heating mode in hot summer and cold winter area,the applicability of different envelope structure systems for the terminal form is simulated and analyzed by EnergyPlus software.The applicability of different envelope structure systems was preliminarily evaluated from the perspectives of heat preservation effect,heating speed,energy consumption level and thermal comfort of the three heating terminal forms under intermittent heating mode using the method of quantification indicators was adopted in this paper.