![]() ![]() ![]() Plate heat exchangers are widely used in energy-intensive process industries to increase heat recovery and reduce greenhouse gas emissions with the features of small minimum temperature approach and high effectiveness. However, the heat recovery is limited through the enhancement, which is restricted by the geometry of existing heat exchanger. Heat exchanger enhancement technologies have been widely used into heat exchanger networks (HENs) retrofit. ![]() Kexin Xu, Robin Smith, in Computer Aided Chemical Engineering, 2019 Abstract However, their method is unable to handle phase change which limits its applications. Even though their model assumes constant heat transfer coefficients and constant heat capacities, they achieved high accuracy for a single phase system. They discretized the hyperbolic first order heat transfer equation for both hot and cold streams inside each element. (1991) developed such models by discretizing the heat exchanger into small elements of fixed area. Detailed modeling of heat exchangers using first principles can result in complex and complicated non-linear models. Natural gas and light hydrocarbons are liquefied to extremely low temperatures using cryogenic refrigeration cycle before being fed into distillation columns for separation.Įfficient design of these refrigeration cycles requires integrated modeling of the heat exchangers with the expander and compressor together. Heat exchangers are a primary process equipment in the chemical industry and are essential for energy conservation, particularly for cryogenic refrigeration. Biegler, in Computer Aided Chemical Engineering, 2019 1 Introduction ![]()
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