A thermodynamic‐combinatorial approach to the design of optimum heat exchanger networks

Flower, J.R.; Linnhoff, B.

doi:10.1002/aic.690260102

Cited by 37 publications

(9 citation statements)

References 6 publications

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“…The development of strategies to overcome these complicating characteristics methodologically is thus of great value. A pioneering method is the noteworthy pinch analysis (Linnhoff and Flower, 1978;Flower and Linnhoff, 1980). Pinch analysis proposed systematic procedures to find energy consumption targets for a given set of process streams based on thermodynamic insights.…”

Section: Introductionmentioning

confidence: 99%

A Novel Sequential Approach for the Design of Heat Exchanger Networks

Pavão¹,

Costa²,

Ravagnani³

2021

Front. Chem. Eng.

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This paper presents a new algorithm for the design of heat exchanger networks (HEN) that tries to take advantage of the strengths of the sequential and simultaneous approaches. It is divided into two sequential parts. The first one is an adaptation of the transportation model (TransHEN). It maintains the concept of temperature intervals and considers the possibility of heat transfer between all the hot and cold streams inside those intervals, and at the same time it allows the a priori calculation of the logarithmic mean temperature difference between all possible heat exchanges, and therefore it maintains the area estimation linear in the model. The second step (HENDesign model), uses a superstructure that contains all the possible alternatives in which the matches predicted by the first stage model can exchange heat to design the final heat exchanger network. Unlike the sequential approach, in this model, all heat flows, temperatures, areas, etc. are reoptimized maintaining the set of matches predicted in the first stage. The model is highly nonlinear and nonconvex, however, it is relatively easy to get good results, because the model starts with the values predicted by the TransHEN model. The algorithm has been tested using fifteen benchmark problems commonly used in literature to compare the performance of heat exchanger network algorithms. In eleven out of the fifteen cases present better or equal results than the best ones reported in the open literature. In three the results presented only marginal differences in total annualized cost (lower than 0.5%) and only a difference of 2.4% in the largest one.

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Section: Introductionmentioning

confidence: 99%

A Novel Sequential Approach for the Design of Heat Exchanger Networks

Pavão¹,

Costa²,

Ravagnani³

2021

Front. Chem. Eng.

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“…Pinch Technology was first introduced by B. Linnhoff , for grassroots design. The method is based on a targeting phase where the minimum utility is calculated as a function of a minimum temperature approximation, originally called minimum approximation temperature difference (Δ T Min ), later named Heat Recovery Approximation Temperature (HRAT).…”

Section: Introductionmentioning

confidence: 99%

Retrofit of Crude Units Preheating Trains: Mathematical Programming versus Pinch Technology

Bagajewicz

Valtinson²,

Thanh³

2013

Ind. Eng. Chem. Res.

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This paper presents a comparison of two heat exchanger network retrofit methods as they are applied to crude units: the well-known and widely used Pinch Design Method (PDM) and a recently developed Heat Integration Transportation Model (HIT), a recently developed mathematical programming-based MILP model [Nguyen et al. Ind. Chem. Eng. Res. 2010, 49, 13]. We show that the three-step procedure (targeting, design, and evolution) used by Pinch Technology renders solutions with excessive and unrealistic splitting of streams as well as visibly less profit compared to the results of HIT.

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“…Over the past 40 years, pinch analysis has been established as a systematic tool for optimal design of resource utilization networks including heat, water, mass and gas systems 2–47. Application of pinch analysis typically involves two key stages, i.e.…”

Section: Introductionmentioning

confidence: 99%

A new graphical approach for simultaneous targeting and design of a paper recycling network

Kit

Alwi

Manan

2011

Asia-Pacific J Chem Eng

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Rising demand for paper has resulted in increased number of trees being chopped around the world. The loss of forest lands due to rampant tree cutting has caused a steady increase in the earth's temperature, changed the weather pattern and ultimately threatened the world's ecosystems. One way to mitigate these problems is through efficient paper recycling. To ensure that maximum recycling is achieved, proper mixing of different types of paper of different fiber contents should be considered. This work presents a new generic graphical method for simultaneous targeting and designing of a maximum paper recycling network. The first step is to establish the maximum paper recycling target using a graphical approach called the source–sink composite curves. Next, source–sink allocation curve and network allocation diagram are constructed to design the maximum paper recovery network. The graphical tool allows a designer to graphically visualize, explore, evolve and systematically select the best paper recycling network. Application of the method in Universiti Teknologi Malaysia campus yields a new fresh fiber target of 1464 tons/year. This is a potential reduction in 43.7% fresh fiber and translates into an annual reduction in 38 622 chopped trees and a potential savings of up to 4.5 GWh of electricity and 30.1 × 103 m3 of water. Copyright © 2011 Curtin University of Technology and John Wiley & Sons, Ltd.

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A thermodynamic‐combinatorial approach to the design of optimum heat exchanger networks

Cited by 37 publications

References 6 publications

A Novel Sequential Approach for the Design of Heat Exchanger Networks

A Novel Sequential Approach for the Design of Heat Exchanger Networks

Retrofit of Crude Units Preheating Trains: Mathematical Programming versus Pinch Technology

A new graphical approach for simultaneous targeting and design of a paper recycling network

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