Research On The Active And Passive Hybrid Optimization Technology Of The Residence Building In The Yangtze River Region

This study is based on the project of the"Heating and air conditioning program and corresponding system of building in Yangtze River Region"(project number:2016YFC0700306).As far as the energy consumption characteristics of the air conditioning system of residential buildings in the Yangtze River Region,the average number of installed air conditioners per household is large,while the using time of air conditioners is short and the average energy consumption is low.However,due to the differences between the behaviors of the people in residential building,the energy consumed by different households is very large,and the concentration of energy consumption is very high.Therefore,the air conditioning energy consumption can be greatly reduced by improving residents'use of air conditioners.Based on the principle of“passive priority and active optimization”,this paper optimizes the operation mode of air-conditioning equipment for residential buildings in the Yangtze River Region.;First of all,questionnaire surveys were conducted on typical cities in the Yangtze River Region,Shanghai,Chengdu,Hangzhou,Changsha and Chongqing,and more than8,000 questionnaires were obtained.Through the statistical analysis by spss,the traditional air conditioning operation mode and natural ventilation mode of the residents in the area are obtained,which provides a basis for analyzing the potential energy saving points of the traditional residential air conditioning usage mode.In order to quantitatively analyze the difference of energy-saving effects of passive energy-saving technologies in various sub-climate conditions in the Yangtze River Region,passive technologies such as external wall insulation,energy-saving windows,and sunshade components were selected,and EnergyPlus was usd to dynamically simulated for each zone.effect,Combined with the P1-P2 economic model analysis method,the net present value of total investment life of various energy-saving technologies in different climatic zones was calculated.Finally,the individual passive technologies and their integration in different climate zones are selected and ranked optimally,which establishes the bases for the application of the corresponding active technologies.Due to the huge difference of the climatic conditions in the sub-climate areas of the Yangtze River Region,the passive energy-saving technology can not meet the energy consumption requirements of 20kWh/(m~2·a)for the whole year.This paper also analysis the active technology.According to the energy-saving effect brought by passive technology application,in order to achieve the energy consumption index of20kWh/(m~2.a),the annual comprehensive energy efficiency ratio of the residential building air conditioner after passive energy-saving technology application is calculated.the same method was used to quantitatively study the temperature index and natural ventilation delay time when natural ventilation and air conditioning switch between each other,and In the second chapter of the questionnaire survey,the user's traditional usage mode was used to compare the energy consumption,and the optimization results of the opening and closing conditions of different climate partition room air conditioners were obtained.In addition,the indoor temperature,humidity and energy consumption of seven households in Wuhu and Chongqing from December 17 to March 3 were monitored.The actual monitoring data was used to analyze the application effects of active and passive energy-saving technologies.The error of the indoor temperature and humidity was used to verify the accuracy of the model.