The Influence of Heat Transfer Irreversibilities on the Optimal Performance of Diabatic Distillation Columns
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M. Schaller
Abstract
A distillation column with the possibility of heat exchange on every tray (a fully diabatic column) is optimized in the sense of minimizing its total entropy production. This entropy production counts the interior losses due to heat and mass flow as well as the entropy generated in the heat exchangers. It is observed that the optimal heating distribution, i.e. the heat exchange required on each tray, is essentially the same for all trays in the stripping and rectification sections, respectively. This makes a column design with consecutive interior heat exchanger and only one exterior supply for each of the two sections very appealing. The result is only slightly dependent on the heat transfer law considered. In the limit of an infinite number of trays even this column with resistance to transfer of heat becomes reversible.
Copyright © 2002 by Walter de Gruyter GmbH & Co. KG
Articles in the same Issue
- Optimization in the Face of Contradictory Criteria – the Example of Muscle
- Exponential Stability in the Dual-Phase-Lag Heat Conduction Theory
- Maximum Frictional Dissipation and the Information Entropy of Windspeeds
- First and Second-Law Efficiencies in a New Thermodynamical Diagram
- The Influence of Heat Transfer Irreversibilities on the Optimal Performance of Diabatic Distillation Columns
- Optimality in Multi-stage Operations with Asymptotically Vanishing Cost
- Liquid-Vapour Phase Change Rates and Interfacial Entropy Production
Articles in the same Issue
- Optimization in the Face of Contradictory Criteria – the Example of Muscle
- Exponential Stability in the Dual-Phase-Lag Heat Conduction Theory
- Maximum Frictional Dissipation and the Information Entropy of Windspeeds
- First and Second-Law Efficiencies in a New Thermodynamical Diagram
- The Influence of Heat Transfer Irreversibilities on the Optimal Performance of Diabatic Distillation Columns
- Optimality in Multi-stage Operations with Asymptotically Vanishing Cost
- Liquid-Vapour Phase Change Rates and Interfacial Entropy Production
