Analysis on Performance of a Solarinduced Ventilation Wall with Buildin Grille Induced Channel

Abstract:

A new solarinduced ventilation wall with grille induced channel, which utilize solar energy and wind energy to cause indoor natural ventilation, was proposed. The effects of structural parameters on the ventilation performance of the new structure were studied at different outdoor wind speed and solar radiation intensity by threedimensional computational fluid dynamics method. The results showed that the builtin grille induced channel can utilize the induction of outdoor wind in formation of main channel of solarinduced ventilation wall to strengthen natural ventilation. The mass flow rate of the new solarinduced ventilation wall firstly increases, and then decreases with the increase of the ratio of grille spacing to grille height, there is an optimum ratio for the maximum of mass flow rate. With the increase of the ratio of wind induced channel width to main channel width, the mass flow rate of the solarinduced ventilation wall under different outdoor wind speed firstly increases and then decreases.