Experimental Study On Heat Transfer Characteristics Of West Wall Of Building

With the rapid economic development and rapid population growth,human consumption of energy continues to increase.China in order to achieve the grand goal of a well-off society,urbanization construction process continues to accelerate,the construction industry has been rapid development,followed by a sharp rise in building energy consumption,urban construction process of energy consumption has occupied China's total energy consumption of 20% to 30%,while the building operating energy consumption accounted for more than 80% of the total energy consumption during the life of the building.Therefore,whether it is from the perspective of promoting China's economic development,or from the realization of a grand goal of building a moderately prosperous society point of view,to promote the development of building energy efficiency are imperative.In the course of the daily operation of the building,one of the main sources of indoor load is the heat and heat loss of the wall,but the wall of the heat transfer process has been affected by many factors,it is a complex and changeable process.This paper chooses a west-west facade of Hefei as a research object,experimental study on wall heat transfer characteristics in winter and summer respectively.This paper analyzes the basic theory of heat transfer of envelope,including heat conduction,convective heat transfer,radiation heat transfer,for the development of the test to establish a theoretical basis;On the basis of this theory,two sets of experimental schemes have been developed,a set of measures to take the wall shade,another set does not use the wall shade measures,reasonable selection of experimental equipment,build experimental platform.In this paper,the heat transfer characteristics of the wall in Hefei region under the typical climate conditions reflect the real situation,in the practical application of the project,it has some guiding significance for the local thermal characteristics of the wall.In the course of the study,the typical experimental data of winter and summer were statistically analyzed,the characteristics of the influencing factors of the heat transfer characteristics of the wall are obtained;Through two sets of test system data comparison,get the western wall in the shade state and not shade under the wall of the heat of the numerical relationship,and calculate the thermal conductivity of the experimental wall.