New analysis method to reduce the industrial energy requirements by heat-exchanger network retrofit: Part 1 – Concepts

Bonhivers, Jean-Christophe; Srinivasan, B.; Stuart, Paul

doi:10.1016/j.applthermaleng.2014.04.078

Cited by 46 publications

(14 citation statements)

References 26 publications

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“…On these diagrams, a bridge corresponds to a sequence of arrows starting from a cooler and finishing at a heater. An algorithm to enumerate the bridges is also available . As an example, the bridge modifications {C1‐E1, E1‐H1}, which lead to a reduction of the energy requirement in the HEN of Figure a, are shown on the grid diagram of Figure b, on the HELD of Figure b, and on the ETD of Figure a.…”

Section: Concepts Of Bridge Analysismentioning

confidence: 87%

“…As each exchanger is indexed in order of increasing source hot‐end temperature, only bridges that include heat transfer modifications with increasing indices of process‐process exchangers have been selected for Table . These modifications are thermodynamically favourable, as explained in a previous paper; e.g., modification E1‐E2 is favourable since the hot‐end temperature of the released E2 source is greater than the hot‐end temperature of the used E1 source, while modification E2‐E1 is unfavourable since the hot‐end temperature of the released E1 source is colder than the hot‐end temperature of the used E2 source . The bridge {C2‐H1} corresponds to the greatest energy saving, namely 2 300 kW.…”

Section: Examplementioning

confidence: 99%

“…A bridge is necessary to save energy in an existing HEN and is a sequence of modifications starting from a cooler and finishing at a heater. A method for the enumeration of bridges has been proposed . For HEN retrofit, the ETD can be shown either on a horizontal axis or between the hot and cold composite curves of pinch analysis; the latter representation makes it easy to use the concepts of pinch analysis and bridge analysis together.…”

Section: Introductionmentioning

confidence: 99%

“…Through bridge modifications, the enthalpy rate curves of exchanger sources move in a sequence starting from a cooler and finishing at a heater. All bridges can be visualized on the grid diagram, the ETD, and the HELD . This approach is the basis of recent research projects to save energy by heat exchanger network retrofit …”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Improving the network pinch approach for heat exchanger network retrofit with bridge analysis

Bonhivers¹,

Moussavi²,

Hackl

et al. 2019

Can J Chem Eng

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Economic and environmental benefits result from increasing the energy efficiency of industrial systems. This article presents the application of bridge analysis concepts to improve the methodology of network pinch for heat exchanger network retrofit. In two simple examples, we compare bridge analysis with the network pinch approach, in terms of saving energy by heat exchanger network improvement. The first example is solved with both methods, while the second can only be solved by bridge analysis. In the first example, three different solutions are proposed, and the third solution leads to 3800 kW energy savings, i.e., the full savings capacity. In the second example, no heat can be saved using the network pinch approach, but two solutions are proposed using bridge analysis, which lead to 395 kW energy savings, i.e., the full savings capacity. Then, we discuss the advantages and limits of pinch analysis and the network pinch approach. Bridge analysis provides a broader perspective on pinch analysis, explains the natural presence of a pinch in a network, shows that removing cross pinch transfers is not necessary to save energy, and helps improve heuristics for creating new cooler-heater paths in the network pinch procedure.

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Section: Concepts Of Bridge Analysismentioning

confidence: 87%

Section: Examplementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Improving the network pinch approach for heat exchanger network retrofit with bridge analysis

Bonhivers¹,

Moussavi²,

Hackl

et al. 2019

Can J Chem Eng

Self Cite

View full text Add to dashboard Cite

show abstract

“…These aspects are apparent especially when dealing with retrofit of existing plants since it is usually prohibitive, practically and economically, to completely revise the plant layout for energy recovery purposes. Recent developments in methods for retrofit design of Heat Exchanger Networks (HENs) for improved Heat Integration include the Retrofit Tracing Grid Diagram [3], the Extended Grid Diagram and Shifted Retrofit Thermodynamic Grid Diagram [4], Bridge Analysis [5], and the Temperature Driving Force curves [6].…”

Section: Introductionmentioning

confidence: 99%

A Steam Utility Network Model for the Evaluation of Heat Integration Retrofits – A Case Study of an Oil Refinery

Marton¹,

Svensson²,

Subiaco³

et al. 2017

J. sustain. dev. energy water environ. syst.

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This paper presents a real industrial example in which the steam utility network of a refinery is modelled in order to evaluate potential Heat Integration retrofits proposed for the site. A refinery, typically, has flexibility to optimize the operating strategy for the steam system depending on the operation of the main processes. This paper presents a few examples of Heat Integration retrofit measures from a case study of a large oil refinery. In order to evaluate expected changes in fuel and electricity imports to the refinery after implementation of the proposed retrofits, a steam system model has been developed. The steam system model has been tested and validated with steady state data from three different operating scenarios and can be used to evaluate how changes to steam balances at different pressure levels would affect overall steam balances, generation of shaft power in turbines, and the consumption of fuel gas.

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Component-Based Simulation Tool for Virtual Commissioning of Control Systems for Heat Exchange and Distribution Processes

Frątczak

Nowak

Klopot

et al. 2020

Advances in Intelligent Systems and Computing

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New analysis method to reduce the industrial energy requirements by heat-exchanger network retrofit: Part 1 – Concepts

Cited by 46 publications

References 26 publications

Improving the network pinch approach for heat exchanger network retrofit with bridge analysis

Improving the network pinch approach for heat exchanger network retrofit with bridge analysis

A Steam Utility Network Model for the Evaluation of Heat Integration Retrofits – A Case Study of an Oil Refinery

Component-Based Simulation Tool for Virtual Commissioning of Control Systems for Heat Exchange and Distribution Processes

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