Abstract
In the case that a plate heat exchanger is used as an evaporator, the heat transfer performance may strongly depend on the flow behavior of gas-liquid two-phase flow. The FC-72 boiling heat transfer characteristics with hot water heating were examined for a single-channel plate fin heat exchanger with an offset fin. Heat transfer rate increased with increasing the flow rate of hot water, however the amplitude seemed to be saturate in high flow rate condition of hot water in spite of the decrease in the effectiveness in the heat exchange. The reason might be on the heat transfer deterioration in the refrigerant flow due to the flow pattern of boiling two-phase flow.
