we found a new material that can decrease temperatures in the clear summer daytime. A hydrated ceramic plate can hold water and evaporate water easily from the surface. Through the evaporative cooling process, radiant heat is changed into latent heat and temperature decreases. The relation of temperature decrease and water content of the hydrated ceramic plate are clearly shown. The critical value is 7% and surface temperature becomes lower than air temperature beyond the critical value in summer daytime. If we use them on the roof of an open-type dairy barn, the radiant heat load to cattle should be considerably decreased.
All Science Journal Classification (ASJC) codes
- Agronomy and Crop Science
- Atmospheric Science