Heat transfer and flow characteristics of air-water heat exchanger inserting porous material

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 the previous study, heat transfer and flow characteristics performances of air-water heat exchanger by under the condition inserting metallic wire was evaluated. By the increase of porosity, although heat removal amount is slightly reduced, the pressure drop was found to be greatly reduced. On the numerical analysis, it was to evaluate the validity of the analysis model. The metal thin wire having a square cross section by inserting the flow path in the flow path in a mesh lattice pattern, it is possible to simulate the experimental results, it is possible qualitative assessment.