Optimal Synthesis of Heat Exchanger Network Based on Flow Exergy Dissipation Cost and Heat Transfer Enhancement

尹清华; 华贲; 吴国东; 黄昭庆; 邓颂九

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Optimal Synthesis of Heat Exchanger Network Based on Flow Exergy Dissipation Cost and Heat Transfer Enhancement

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- Optimal Synthesis of Heat Exchanger Network Based on Flow Exergy Dissipation Cost and Heat Transfer Enhancement
- CIESC Journal Issue 1, (1992)
- 作者机构：
  
  华南理工大学化学工程研究所,华南理工大学化学工程研究所,华南理工大学化学工程研究所,华南理工大学化学工程研究所,华南理工大学化学工程研究所广州510641,广州510641,广州510641,广州510641,广州,510641
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 February 1992，
  
  Published：25 February 1992
- 稿件说明：
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尹清华, 华贲, 吴国东, et al. Optimal Synthesis of Heat Exchanger Network Based on Flow Exergy Dissipation Cost and Heat Transfer Enhancement[J]. CIESC Journal, 1992, (1).
DOI：

尹清华, 华贲, 吴国东, et al. Optimal Synthesis of Heat Exchanger Network Based on Flow Exergy Dissipation Cost and Heat Transfer Enhancement[J]. CIESC Journal, 1992, (1). DOI：

摘要

详细论证了在求解换热网络优化狭点温差△T_mtn

opt过程中

同时考虑换热器流动(火用)损、匹配单元优化和传热强化的必要性.提出以“Supertargeting”所给出的最优狭点温差为初值向狭点温差增大的方向寻求最优解的方法.文中对影响△T_min

ovt大小及其与初值之差的经济条件和复合线特性进行了讨论;提出了新的换热网络优化合成策略.用3个实例来说明所提出方法的优越性.

Abstract

This paper describes the necessity of simultaneously considering flow exer-gy dissipation of heat exchanger

optimization of match unit and heat transfer enhancement while searching optimal minimum temperature approach ΔTmin

opt. It is proposed through analysis to take the ΔT°min

oPt obtained with Linnhoff et al. s "supertargeting" as the initial value and search the ΔTmin

opt towards a value larger than the ΔT°min

opt in order to save computation time. In this paper

economic margin and composite curves structure characteristics of heat exchanger system influencing the ΔTmin

opt and its difference with the initial value are discussed

4 typical types of composite curves structure are distinguished. A new strategy for heat exchanger network synthesis is advanced. Three practical cases show the advantage of the new strategy over others.

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