Influence Of Ventilation On The Energy Consumption Of Air Conditioning In The Bedroom In Chongqing

With the increasing popularity rate of urban residential area and residential air conditioner,the energy consumption growth of residential air-conditioning has become the focus of residential energy conservation reform.There are many factors affecting the energy consumption level of residential air conditioning.Based on the existing research,it is found that the personnel behavior is an important factor affecting the energy consumption of air conditioning,and the difference in the ventilation status caused by the difference of people's behavior is the fundamental reason for the energy consumption of the air conditioning.The difference of ventilation in residential buildings is significant,and is influenced by the environmental parameters and non environmental parameters of the building itself.The composition and behavior of the people are also the important factors that affect the ventilation of the house.First of all,this paper expounds the status of the research on the behavior of housing personnel and ventilation,ventilation and air conditioning energy consumption,and explains the background of the research on the relationship between residential bedroom ventilation and air conditioning energy consumption in Chongqing.Secondly,in the form of questionnaire survey,we know the basic information of housing in the main city of Chongqing,such as the basic information of the building,the composition of the housing personnel,the quantity of air conditioning equipment and the indoor and external environment parameters.The relationship between basic information and residential ventilation is analyzed.It is concluded that the ventilation condition of the house will be influenced by the conditions of the building itself,the indoor and external environment parameters and the composition of the personnel.Thirdly,the behavior of personnel is the most important factor affecting the energy consumption of air conditioning.The typical behavior of the people in the house includes the opening habit of the inner door and the outside window,the temperature of the air conditioning,the use habit,etc.These all have significant individual and seasonal differences,and can not be understood through the "big data" platform.Therefore,we measured the personnel behavior,environmental parameters,air conditioning operation curve and energy consumption level of the main urban residential area in Chongqing in a phased way.It is found that the peak power and stable operating power of the residential air conditioning correspond to about 125% and 65% of the rated power respectively,and basically keep low power and stable operation.The daily operating time of air conditioning in winter and summer is 5-6h and 10-11 h respectively.When the temperature difference between indoor and outdoor in winter and summer is 4/6?,the opening rate is up to 50%/80%,and it is based on this Qualitative analysis is made on the influence of different personnel behavior and environmental parameters on ventilation status and energy consumption level.Thirdly,on the basis of the qualitative understanding that the difference in ventilation condition will affect the energy consumption of the bedroom air conditioning,the "dry ice method" is used to measure the ventilation number of the bedrooms in different personnel behavior mode,and the corresponding ventilation grade is divided.The ventilation grade I-IV corresponding to the indoor air change number is 1</1-5/5-10/>10 times,and the quantitative is not obtained.With the corresponding relationship between the environmental parameters and the energy consumption level under the ventilation grade,when the ventilation grade I-IV changes,the indoor and outdoor temperature difference in the natural ventilation and air conditioning operation is reduced by 2 /5?,respectively,and the volume fraction of CO2 is reduced by 900/500 ppm in winter and summer,and the energy consumption level of winter and summer is increased by about 1.3/0.9kwh.Finally,the influence of the change of the ventilation grade on the power and energy consumption level of the air conditioning under the specific model is simulated by DeSTh.The results are compared with the measured results.The scatter plot of the ventilation grade and environmental parameters,the ventilation grade and energy consumption is obtained,which can provide reference for the energy saving work of the residential building.