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엑서지 손실 최소화에 의거 합성되는 열교환망의 유용성

Usefulness of Heat Exchanger Network Synthesized by Minimization of Energy Loss

주현수 최창균 김화용

Joo HS Choi CK Kim H

HWAHAK KONGHAK, October 1992, 30(5), 537-546(10), NONE

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Abstract

본 연구에서는 엑서지 해석과 핀치설계방법을 도입한 열교환망합성방법을 이용하여 열교환망을 합성하였다. 본 합성방법을 기존의 무언에 나와 있는 5개의 열교환망문제에 적용하여 본 결과, 최대 에너지회수 조건하에서의 최소 열교환장치수를 만족하였으며 통 수 및 열교환면적에서도 4개의 문제들이 근소한 차이를 보였다. 따라서 본 합성방법은 열교환망합성 및 개선에 있어서 기초설계자료로 활용될 수 있다고 생각한다.

In the present study the heat exchanger network is synthesized by the design method in which the exergy analysis is incorporated with the pinch technology. The present synthesis method is applied to the existent five problems of heat exchanger network. Our method employing the minimum mumber of heat exchange units under the maximum energy recovery condition looks very reasonable even in view of the number of shells and also the area of heat exchangers in comparison with results in recent publications. It is shown that the present method brings the removal of 4 shells in one problem and in other three problems it produces almost the same heat exchange areas as those from the previous methods. Therefore it is thought that the present synthesis method can be used efficiently for the basic design to synthesize and also improve heat exchanger networks.

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