Abstract
The OTEC system requires the more efficiency heat exchangers to improve the efficiency of own system. To improve the heat transfer performance of it, we studied the heat transfer surface of plate evaporator with micro-fabrication in the past. The plate had good heat transfer performance. Then, we proposed the new type evaporator which has U-type fins. In this study, the overall heat transfer coefficient was measured and FC-72 boiling behavior inside evaporator was observed. The result of that the U-type fins plate has about 60% larger overall heat transfer coefficient than without fin plate at the same flow conditions.
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