Abstract
A two-dimensional building model has been developed to estimate the effect of a wet roof covered with water, of ventilation, and of air conditioning on the interior temperature and sensible heat flux on the roof of the building. Sensible heat flux on the wet roof drops to 25% of that on a dry roof, but the effect of ventilation and of air conditioning on sensible heat flux cannot be seen in a numerical study.
The simulated room temperature drops by about 5°C with both 80mh-1 ventilation and the wet roof, and by 3.5°C with -46.4Wm-2 anthropogenic heat generated in the room.
The heat release generated by the outdoor heat exchanger for an air conditioning system is at its maximum value of 219 Wm-2 at 4 p. m, in a summer day when a constant room temperature of 24°C is maintained by the air conditioning; the heat amount corresponds to the sensible heat flux on the roof.
