Study on the Influence of Sunshade Methods and Construction on Indoor Natural Ventilation
Sunshading methods and construction have a great influence on the creation of indoor wind environment,and with the improvement of indoor air quality and thermal com-fort requirements,indoor natural ventilation is more and more emphasized.In order to in-vestigate the influence of shading methods and construction on the indoor wind environ-ment,taking an office in Hengyang City as an example,the air intake,measured point wind speed values and air age of the office were analyzed based on CFD(Computational Fluid Dynamics)technology for horizontal,vertical,integrated and baffle shading panels at lengths of 400 mm,600 mm,800 mm,1 000 mm and 1 200 mm,respectively.When the wind projection angle is 0°,the average air intake of horizontal,vertical and integrated sunshade increases by 135 m3/h,110 m3/h and 125 m3/h for every 200 mm increase in the length of the sunshade,and the average air intake of baffle-type board decreases by 365 m3/h for every 200 mm increase in the length of the board.Through the study and a-nalysis of the evaluation indexes of the air intake,the measured point wind velocity and the indoor wind field,the impact of the sunshade on the indoor air intake is larger,and the impact on the indoor air flow direction and flow rate is less.The reasonable use of vari-ous types of sunshade,can achieve the effect of improving the indoor natural ventilation.
sunshadenatural ventilationindoor air environmentnumerical simulation
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