Heat Exchanger Network synthesis with Detailed Heat Exchanger Design

Abstract

Pressure drop and fouling are important issues in heat exchanger network synthesis, which are usually neglected. Heat exchangers were designed in detail during the heat exchanger network synthesis, and pressure drop and fouling effects were taken into account. Pinch analysis combined with exergoeconomic analysis was used for determining optimal minimum approach temperature (DT min ) for heat exchanger network synthesis. Exergy consumption of heat transfer in HENs was calculated using a subsection integral on balanced composite curves. The heat transfer coefficients of all heat exchangers in the network were calculated iteratively to meet the requirements of optimal area and allowable pressure drops. The proposed method was applied to an industrial case. Numerical results indicate the importance of the detailed design of heat exchangers in HENs synthesis.

Globally optimal simultaneous heat exchanger network synthesis and basic heat exchanger design

“…The whole methodology incorporates area targeting in a methodology similar to supertargeting of the minimum temperature approach (Δ T min ). Zunlong et al 11 proposed the utilization of Pinch Analysis and exergoeconomic analysis for the determination of the optimal minimum temperature approach, followed by the synthesis using Pinch Analysis and the design of the different HEXs considering the pressure drop distribution among HEXs of each stream. Allen et al 12 used Pinch Analysis for the HEN synthesis and a genetic algorithm (GA) for the design of HEXs.…”

Exploiting Tube Inserts to Intensify Heat Transfer for the Retrofit of Heat Exchanger Networks Considering Fouling Mitigation

“…In their method, an asymptotic fouling formation model was used to calculate fouling rates in different exchangers, and then suitable exchanger matches with lower stream fouling rates were determined based on the concept of pinch technology and heuristic rules. Ravagnani et al 12 and Jin et al 13 fixed fouling factors and considered detailed exchanger design in the synthesis and optimization of HENs. Their approach considering pressure drops and fouling effects provided more realistic solutions than those neglecting detailed exchanger design.…”