Use of advanced composite curves for assessing cost-effective HEN retrofit II. Case studies

Nordman, Roger; Berntsson, Thore

doi:10.1016/j.applthermaleng.2008.02.022

Cited by 35 publications

(12 citation statements)

References 8 publications

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“…An approach that accounts for cost of not only the heat exchangers but also the pumping and piping is the Cost Matrix [15] method. The Area Matrix method has been later extended by Nordman and Berntsson with introduction of the Advanced Composite Curves [16] and presented its applicability in case studies [17]. Gadalla [18] proposed graphical method for plotting temperatures of hot process stream versus cold process stream.…”

Section: Introductionmentioning

confidence: 99%

Heat Integration retrofit analysis—an oil refinery case study by Retrofit Tracing Grid Diagram

Nemet

Klemeš

Varbanov

et al. 2015

Front. Chem. Sci. Eng.

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Heat Integration has been established over the last decades as a proven chemical engineering methodology. Two design implementations are often used in the industry: grassroots and retrofit. Although various methods have been developed for retrofit, it still needs more development to ensure simultaneously thermodynamic feasibility and economic viability. In this paper, a novel graphical approach has been developed to facilitate the understanding of the current situation and scope of improvement. The Retrofit Tracing Grid Diagram presents all streams and heat exchangers in temperature scale and the heat exchangers are clearly separated from each other, enabling clear visualisation of the current state. The tool incorporates the previously developed Cross-Pinch Analysis as well as path approach for retrofit. Additionally, the non-vertical heat transfer can be evaluated. The application of the developed tool has been validated on an oil refinery case study. The applicability of the tool is evident as it can reveal additional options for modification that none of the previous methods considered.

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Section: Introductionmentioning

confidence: 99%

Heat Integration retrofit analysis—an oil refinery case study by Retrofit Tracing Grid Diagram

Nemet

Klemeš

Varbanov

et al. 2015

Front. Chem. Sci. Eng.

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“…It is necessary to screen available heating and cooling sources of the process from the GCC [17,18]. This investigation provides the information about appropriate cooling (heating) level(s) and corresponding sizing of HP (or heat duty).…”

Section: Methodsmentioning

confidence: 99%

Heat integrated heat pumping for biomass gasification processing

Pavlas¹,

Stehlı́k²,

Oral³

et al. 2010

Applied Thermal Engineering

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The main part of this paper is an industrial case study. It deals with an application of a heat pump in energy systems for biomass gasification in a wood processing plant. ProcessIntegration methodology is applied to deal with complex design interactions as many streams requiring heating and cooling are involved in the energy recovery. A refrigeration cycle maintains low temperature in the scrubber where the production gas (or synthesis gassyngas) is cooled and undesirable contaminants are removed before the syngas is introduced into the engine. In addition to electricity generation, a large amount of waste heat is available in the biomass gasification system studied in the paper, and its appropriate heat integration with utility systems within a plant allows the available heat to be efficiently utilized for the site. The conceptual understanding gained from the case study provides systematic design guidelines for further process development and industrial implementation in practice

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“…The most recent publications about applications of process integration (see, e.g., [1][2][3][4][5]) and various aspects of HEN synthesis (see, e.g., [6][7][8][9][10]) confirm the interest of the research community in this field, the ultimate aim of which is cleaner production.…”

Section: Introductionmentioning

confidence: 99%

The synthesis of cost optimal heat exchanger networks with unconstrained topology

Toffolo

2009

Applied Thermal Engineering

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The optimization of heat exchanger network (HEN) synthesis still remains an open problem because of the complexity of the space comprising all the possible solutions, and most of the proposed methods introduce simplifying assumptions that mainly affect the topological features of the candidate solutions considered and thus artificially limit the boundaries of the search space.This work is devoted to the pursuit of cost-optimal HENs with unconstrained topology, exploiting the advantages deriving from two graph representations of a HEN. One representation is used by an evolutionary algorithm to manage HEN topology and the other is used by a NLP algorithm to manage heat load distribution among the exchangers. The proposed two-level hybrid optimization method is applied to four test cases taken from the literature about HEN synthesis, among which the well-known Aromatics Plant problem.Keywords: synthesis optimization, heat exchanger networks, graph theory. ACCEPTED MANUSCRIPTThe synthesis of cost optimal heat exchanger networks with unconstrained topology -Andrea Toffolo

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Use of advanced composite curves for assessing cost-effective HEN retrofit II. Case studies

Cited by 35 publications

References 8 publications

Heat Integration retrofit analysis—an oil refinery case study by Retrofit Tracing Grid Diagram

Heat Integration retrofit analysis—an oil refinery case study by Retrofit Tracing Grid Diagram

Heat integrated heat pumping for biomass gasification processing

The synthesis of cost optimal heat exchanger networks with unconstrained topology

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