Abstract
Outer Adiabatic System Using "Green Eco-Mat" is composed of the porous mats laid on the roof and housetop and the water supply equipment. It is able to conserve energy throughout the year, namely, to radiate heat by vaporization of saturated water in the summer season, and to keep the houses warm like adiabatic slabs in the winter season. This paper presents the results of performance tests and evaluation of energy conservation effects. It is expected that this system saves the electric power of 60kwh for 8 hours in the daytime to air-condition the building with 500m^2 in roof area.