PURPOSE: A turbine bearing lubricant cooling system using evaporation heat of refrigerant is provided to cool lubricant for a turbine bearing with a natural circulation method.;CONSTITUTION: A turbine bearing lubricant cooling system using evaporation heat of refrigerant comprises a lubricant tank(11), a lubricant heat exchanger(12), a condenser(51), a gas pipe(22), a liquid pipe(23) and a gas outlet. Lubricant for a turbine bearing is stored in the lubricant tank. The lubricant heat exchanger is installed higher than the lubricant heat exchanger outside the lubricant tank. The gas pipe passes through the lubricant heat exchanger and the upper outlet of the condenser. The liquid pipe passes through the lower outlet of the lubricant heat exchanger and the lower outlet of the condenser. A closed loop coolant circuit formed by the lubricant heat exchanger, the gas pipe, the condenser, and the liquid pipe, and made vacuum by coolant. The coolant can boil with the heat of the lubricant filled in the lubricant heat exchanger.;COPYRIGHT KIPO 2010
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