KAJI PENGGUNAAN METHANOL SEBAGAI REFRIGERAN UNTUK MENINGKATKAN EFISIENSI TERMAL SISTEM PENDINGIN KONVEKSI DENGAN UNDERGROUND THERMAL STORAGE TANK

Abstrak

Abstract

Convective roof cooling operates using water as refrigerant. It consists in convection process pass through over the roof, thus decreasing the roof temperature. This system has a great potential to provide thermal comfort in places where roof temperature is low. However, thermal efficiency from the previous research which it is use water as refrigerant is still low. A way to solve this problem is to use methanol as a refrigerant. Following, this paper analyzes some operation parameters such as: roof and room temperature and heat transfer rate. The paper shows the conditions for the best operation point, with regard to thermal conditions of roof and room temperature.

Keywords: wind, turbine, electrical power.