The effect of a novel roof pond to the indoor air temperature for passive cooling

The effect of a new passive cooling device to the indoor air is analyzed based both to experimental and simulating results. The tested device is a ventilated pond protected with an aluminum layer, placed on the roof of the examined building. The indoor air temperature of the building has been recorded, before and after the placement of the roof cooling technique. The record indoor air temperature is analyzed, in regard to the ambient conditions.

Experimental analysis of small scale roof ponds, protected by a variety of materials in different positions in regard to water level

The experimental analysis aims to investigate ways to protect a water pond, in order to reduce bottom pond temperature. For this purpose, three identical shallow ponds are together recorded in moderate climate. The bottomless ponds are placed on a concrete roof, exposed to the ambient conditions. Water depth is kept constant in 0.10m, while each pond has an area of 1m2. A number of alternative materials for water protection are tested: white textile, the textile used in ironing board, aluminum layer, aluminum foil and insulation.