Application of passive cooling systems in the hot and humid climate : the case study of solar chimney and wetted roof in Thailand.

For that study, the thermal performance of two passive cooling systems under hot and humid climate condition is experimentally investigated. The experimental results obtained from a test cell were compared to those obtained from a controlled cell with identical walls but different roof configurations. The results show that application of a solar chimney in the test cell together with the spraying of water on roof can maintain the room temperature much lower than the ambient temperature and increase the flow rate of air due to the buoyancy.