The Performance Research Of Trombe Wall And Its Optimizaytion Structure Under The Coupled Action Of Wind And Heat Pressure

Along with the development of the industry and the progress of technology,energy and environment problem increasingly serious,the society is facing the crisis of energy shortage and environmental pollution.In terms of construction,most of air conditioning are used in the buildings,which,on the one hand,makes the energy consumption increase,on the other hand,bring a series of problems such as 'Conditioning Disease'.In recent years,natural ventilation has paid more and more attention by people.At present,most of the studies of Trombe wall about natural ventilation,only thermal effect is considered.While in practice,wind pressure and hot pressing both can affect the ventilation performance,sometimes thermal and wind pressure are weaken each other,sometimes hot and air pressure are enhanced.Based on this view,the coupled action under the thermal pressure and wind pressure of Trombe performance were studied,and the optimization of the structure setting the flow piece in the Trombe wall channel is put forward in this paper.The disturbed flow piece is the square plate.The optimization structure of Trombe wall is compared in order to find to the best structure through numerical simulation.At the same time,the installation angle of the turbulence pieces are also studied based on different angles comparing the ventilation rate,temperature and velocity of Trombe Wall to find the best so that provides the convenience for later energy-saving building design,and achieves the goal energy saving.Numerical calculation results indicate that:when the proportion of Inlet size and height of Trombe wall is 0.1,the ventilation rate arieves maximum under the same outdoor wind speed and heat flux density of collection heat wall.In the same case above,the ventilation rate of Trombe wall increases with its width increasing;wind pressure to natural ventilation has beneficial effect,and wind pressure and thermal coupling action prompt the internal ventilation rate of Trombe Wall increasing.when the volecity value of the external environment is 0.1?0.7 m/s,hot-pressing during 100?800 w/m2,hot pressing plaies a leading role in every value of volecity.Through the performance compared between the optimizing structure and not reaching the conclusions:as a whole,between the range of width of Trombe wall between 100 mm to 600 mm,the performance of optimization structure increasing turbulence piece is better than the not optimized,and the performance of optimization structure is more obvious than not optimized between 100?300 mm.When the width of Trombe Wall is 400?600 mm,the performance of the structure of Trombe wall optimized to a certain extent,has improved,but the increase rate tends to reduce,especially their insulation heat effect.When the width is 100 mm?200mm,disturbing piece is 30°,the Trombe Wall's insulation heat effect is best;When the width is 200mm,the ventilation performance of optimization structure is improved significantly,and the most obvious growth is the optimization structure whose turbulence piece is 45°,and the growth of ventilation rate can reach 32.5%.When the width is 300mm,and the most obvious growth is the optimization structure whose turbulence piece is 60°,and the growth of ventilation rate can reach 45.5%and disturbing piece is 45°,the Trombe Wall's insulation heat effect is bestwhen the range of Trombe Wall width between 400?600 mm,the best insulation heat effect is the optimization structure of Trombe Wall in which the piece angle is 30°,and the best ventilation performance is the optimization structure whose turbulence piece are 30°,and the largest growth of ventilation rate can reach 23.5%.