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This paper presents new methods for superstructure heat exchanger network synthesis (HENS) and mass exchanger network synthesis (MENS). The techniques developed in this study explore the use namely supply temperatures/compositions and target temperatures/ compositions in HENS and MENS to define the intervals of superstructures. Such superstructures are modelled as mixed integer non linear programmes...
The total annual cost (TAC) of a Heat Exchanger Network (HEN) is decreased by using Multi-Stream Heat Exchangers (MSHE), enabling a simultaneous heat exchange between more than two streams in a single unit. Several methods have been developed based on pinch concepts to design an MSHE; however, they lead to designs which are both larger and more complex than necessary. The major drawback is they usually...
Carbon dioxide (CO2) emission reduction targeting is an important move in atmospheric CO2 concentration control. Idea of applying HEN retrofit and fuel switching in existing plant has been proposed to be applied simultaneously in achieving CO2 emissions reduction. Graphical approach combining the mentioned idea has been proposed, but involves potentially time consuming manual procedures. Besides,...
The purpose of this study is to find a simplified model which can be used in the optimal process to simplify the optimal design reasonably in conduits with corrugated wall, encountered in commercial plate heat transfer exchanger (PHE). The numerical model of this study is verified by the published experiment data in the previous literature. The results of this present study are shown that the proposed...
In order to achieve the maximal diathermanous efficiency, this paper introduces two calculation methods about the most economical diathermanous area of the Shell and tube heat exchanger which works in two different conditions, and establishes the corresponding mathematical models.
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