Abstract
There are several methods for heat transfer enhancement. For example, one can attach various fins on the heat transfer surface, process the surface roughly, insert twisted tape, and so on. These methods increase the heat transfer coefficient or area by manufacturing changes to the heat transfer surface. However it is necessary to consider the problem on account of processing heat transfer area. In this study, heat transfer performance of air-water heat exchanger by under the condition inserting metallic wire was evaluated. Therefore, as insertion amount of metallic wire increased, amount of removed heat was increased slightly. However, pressure drop was increased greatly.
