Abstract
Temperature of urban areas has increased since about 100 years ago. It would be needed to develop a new urban device to compensate artificial surface of urban areas by cooling air like leaves of plants. We have applied porous ceramics to a new concept of the cooling device, which can work as leaves of plants. It is a transpiration cooling system. We have already developed a testing device for confirming the thermal performance aiming 2 kW cooling capacity using porous ceramics and confirmed that the cooling ability has already exceeded 2 kW in intermediate seasons and the exhaust-air temperature is lower than ambient temperature in summer. By replacing out-door unit of small-capacity cooling tower or out-door unit of cooling devices, the proposed cooling system can create the non-exhaust heat thermal systems of refrigerating, air-cooling devices, power generator, and PVT solar panels etc.
