Study On Energy Saving Technology Of Respiratory Wall In Public Buildings

Respiratory wall can effectively reduce building energy consumption,at the same time the wall has the advantages of heat preservation and heat insulation,noise reduction and so on because the set middle air layer.With the increasing energy consumption of public buildings,the application of energy-saving advantages of breathing walls is increasing.In order to obtain the influencing factors of energy consumption,the heat transfer law and the reasonable thickness of the wall,this paper studies the energy saving technology of the respiratory wall,and its research conclusion has important theoretical significance and engineering application value.The research object is the respiratory wall in this paper,it is concluded that the material and thickness of the respiratory wall are the main influencing factors of its energy consumption through field investigation.In order to master the energy saving effect of breathing wall,this paper set the actual project as an example,proved that the energy efficiency of breathing wall increased by 18% than the average wall by calculating the thermal index of the respiratory wall and comparing the same structure of the ordinary wall.In order to reduce the thickness and weight of the respiratory wall,improve the structural safety,the material and thickness of the wall were optimized,and infer that the heat transfer coefficient of the wall was reduced by 20.38% and the hot inertness index increased by20.67% by comparison.At the same time,Fluent software is used to simulate and verify that the temperature inside,outside and the air layer of the respiratory wall is reduced by1.9?,2.2?and 0.2?.It is proved that the optimized respiration wall has better energy saving.In order to study heat transfer law and changing characteristics of respiratory wall,we has build three groups of temperature experimental wall and get that(1)the temperature of the wall during the day has experienced four stages(insulation-transition-heat-insulation).In the thermal insulation stage,the temperature change is quite different,but the temperature change is not very different in the transitional stage.(2)The maximum temperature of the respiratorywall is later 1 hour than the average ordinary wall during the day.The experimental results show that the insulation performance of the breathing wall is better than that of the ordinary wall.In order to verify the reliability of the test results,three groups of experimental walls are simulated by Fluent software and the results are basically the same.At the same time,the simulation results show that the heat transfer rate of breathing wall is reduced by5.42 W,which also further shows that the thermal performance of the respiratory wall is better than the ordinary wall.In order to better promote the application of breathing wall,this paper selected the different wall materials which commonly used in the project,obtaining that the best air layer thickness of 40mm-60 mm through simulation analysis and calculation of heat transfer coefficient and comparison of specifications.At the same time,it was found that the height change of respiratory wall had little effect on its heat transfer performance.In conclusion,this article can be drawn that the thermal performance of the breathing wall is better than that of the ordinary wall and it has good thermal insulation performance;the optimum air layer thickness range of breathing walls;the height,thickness and other factors impact on the wall through the actual research,theoretical calculation,experimental measurement and simulation checking.It is not only can be widely used in various types of public buildings,but also provide a reliable reference for further study of the respiratory wall.