Abstract
Energy saving strategies for air cooling include methods that utilize the latent heat of water such as local cooling by dry mist, roof cooling by spray, and greening of building. In this report, the air temperature for cooling by using the latent heat from a moisturized test cloth on some cooling plates in a duct was investigated. The specific retention and evaporation rate of the test cloth were 130mass% and 3.21g/(m^2・min), respectively. The heat of cooling, which is the air temperature difference between upstream and downstream of cooling plates, was measured for velocities ranging from 0.5 to 4m/s, air temperatures ranging from 24 to 31℃ and relative humilities ranging from 50 to 80%. It was observed that the heat of cooling increases with increasing air temperature, air velocity, the number of plates and the length of plate, and decreases with decreasing air humidity.
