판형 열교환기의 전열판 개수에 따른 유량 분배 특성에 대한 수치해석

A NUMERICAL STUDY ON THE CHARACTERISTIC OF FLOW DISTRIBUTION IN THE CHANNEL OF PLATE HEAT EXCHANGER FOR VARIOUS NUMBER OF CHANNELS

In the present study, the characteristic of flow distribution in the channel of a plate heat exchanger is investigated numerically. In order to accomplish the efficient and fast analyses of the flow characteristics in the channel, a semi-microscopic analysis has been performed using a porous media model. For semi-microscopic analysis using porous media, the flow resistance coefficients are obtained through the result of pressure drop in the experimental data. The results showed that the variation of mass flow rate, geometry and chevron angle strongly depend on the flow distribution in the channel. Particularly, the chevron angle is most important factor for uniform flow distribution.