Research On Indoor Thermal Climate And Energy Saving Of Residential Air-Conditioning Based On CRI Analysis

With the acceleration of urbanization in China,the building area of residential buildings is huge and still rising.In addition,with the continuous improvement of people’s requirements for indoor thermal environment quality,the installation rate of household air conditioning system shows a trend of explosive increase year by year,resulting in increasing energy consumption of buildings.However,the contradiction between people’s increasing demand for thermal comfort and building energy conservation cannot be solved.The significance of optimal design of indoor thermal environment for residential air conditioning is not only to reduce building energy consumption,but more importantly to ensure better indoor thermal environment quality with lower energy consumption and meet the thermal comfort of residents.This topic summer residential indoor thermal environment in cold area as the research object,the theoretical research of various heat factor how to influence the indoor thermal environment formation mechanism in the construction of the external disturbances and internal disturbances and operating factors and the distribution features of the indoor thermal environment,using CFD numerical simulation method to study indoor thermal environment analysis and optimization design.At present,there are few theoretical researches with scientific depth,and there is a lack of optimization design research on high comfort and low energy consumption of buildings with the contribution of thermal environment as the evaluation method.The specific research contents are as follows:(1)Take the experience room of household fresh air system as the experimental platform to complete the indoor thermal environment experimental research of different working conditions when air conditioning 1s used in residential buildings and fresh air is introduced in summer.Through the collation and analysis of the experimental data,the optimal method of fresh air introduction in summer was determined based on the uniformity of thermal environment,reasonable air distribution and energy eonsumption.(2)On the basis of the experimental study of indoor thermal environment in summer,a numerical simulation model was established with indoor temperature and air velocity as the research objects,and the reliability of the model was analyzed by using the confidence interval method.(3)Based on CFD numerical simulation research,adopt the method of thermal environment form contribution to parse the indoor thermal environment,studies the human body,cold and heat source,wall and window thermal factors such as proportion of influence on the indoor thermal environment,is the use of thermal environment contribution analysis from the Angle of saving energy consumption,the concept of clear what kind of measures will influence on the indoor thermal environment is bigger,so as to optimize design,low energy consumption and high comfort of indoor thermal environment.Based on the above research results,under the premise of satisfying the requirements of human thermal comfort,the optimal design of energy-saving residential indoor thermal environment can be realized.The research results of this topic can not only prove the engineering application value of this project research,but also can transform CFD numerical simulation technology as an analytical tool into CFD(interior environment design)as a design tool,and can serve as the basic research results of all energy-saving buildings,which has a broad guiding significance.