Non-structural model for heat exchanger network synthesis allowing for stream splitting

Kayange, Heri Ambonisye; Cui, Guomin; Xu, Yue; Li, Jian; Xiao, Yuan

doi:10.1016/j.energy.2020.117461

Cited by 27 publications

(12 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As the result of serial allocation of heat exchangers on a substream of cold stream C1, an additional heat recovery exchanger with a heat load of 969.05 kW (Figure 6) is incorporated, leading to reduced heating and cooling requirement. Thus, the network uses one less utility exchanger than theirs, [20] making it more T A B L E 2 Solutions for case studies 1-4…”

Section: Resultsmentioning

confidence: 99%

“…This work adopts the non-structural model proposed in the work of Kayange et al [20] Process streams are defined by real numbers…”

Section: Hen Representation and Split Zone Formation In Mnsm-ssmentioning

confidence: 99%

“…1. Initialize the population of NP individuals in RWCE, [20,34] each having NE heat exchangers, where NE is specified by the designer (Table 1) based on the number of process-process exchanger units in literature solutions; assign each exchanger a heat duty Q according to Equation ( 2) where values for Q max are set manually, as shown in Table 1, depending on the heat content distribution of process streams; initialize substream flow fractions by randomly generating numbers in the range 0, 1 ð Þ; and initialize the global best cost (=10 20 $/year) for individuals. 2.…”

Section: Optimization Strategymentioning

confidence: 99%

“…Kayange et al [20] 19 9620 413 180 31 076.3 6 716 343 a Nair and Karimi [10] 19 8690 412 250 30 667.0 6 695 584 a Rathjens and Fieg [46] Abbreviation: TAC, total annual cost.…”

Section: Case Studymentioning

confidence: 99%

“…Furthermore, the incorporation of series exchangers per fluid branch has been carried out mostly using models based on superstructures, so some potential HEN configurations may be excluded since the necessary design elements are postulated in advance. This paper proposes a modified non‐structural model with stream splitting (mNSM‐SS) [ 20 ] that allows for submixes in stream splits and series arrangement of heat exchanger units in individual substreams. Submixes can be especially suitable for problems that have significantly more streams of one type (hot or cold) than the other, and problems where some process streams have high heat capacity flowrates which necessitate exchange of large quantities of heat.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Synthesis of stream‐split heat exchanger networks using non‐structural model considering serial equipment in stream branches and submixing of substreams

Kayange

Cui

et al. 2021

Can J Chem Eng

Self Cite

View full text Add to dashboard Cite

This paper proposes a non‐structural model with stream splits, for heat exchanger network (HEN) synthesis, that allows for submixing of substreams within splits and series connection of exchanger units in a substream. In a submix, one substream totally combines with another non‐isothermally, and by allowing this feature, the designer incurs only piping costs, which are significantly low compared to other HEN costs, and benefits from increased possibility of manipulating substream temperatures. An algorithm employing random walk principles and compulsive evolution is applied for HEN optimization. The method's randomness, which enhances its explorative searching power and efficiency, is an attractive property that matches the proposed model. Four case studies from the literature are solved and annual cost savings of $1800, $7769, and $4771/year are achieved for three of them in comparison with published best solutions, attesting to the effectiveness of the proposed model.

show abstract

Section: Resultsmentioning

confidence: 99%

“…This work adopts the non-structural model proposed in the work of Kayange et al [20] Process streams are defined by real numbers…”

Section: Hen Representation and Split Zone Formation In Mnsm-ssmentioning

confidence: 99%

Section: Optimization Strategymentioning

confidence: 99%

“…Kayange et al [20] 19 9620 413 180 31 076.3 6 716 343 a Nair and Karimi [10] 19 8690 412 250 30 667.0 6 695 584 a Rathjens and Fieg [46] Abbreviation: TAC, total annual cost.…”

Section: Case Studymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Synthesis of stream‐split heat exchanger networks using non‐structural model considering serial equipment in stream branches and submixing of substreams

Kayange

Cui

et al. 2021

Can J Chem Eng

Self Cite

View full text Add to dashboard Cite

show abstract

Global optimization of the design of intensified shell and tube heat exchanger using tube inserts

Chang,

Shen

2023

Can J Chem Eng

View full text Add to dashboard Cite

This paper investigates global optimization of the detailed design of intensified shell and tube heat exchangers using two tube inserts: twisted tape and coiled wire. Three objectives, including heat exchanger area, total annualized cost, and environmental impact, are respectively minimized. All the design variables are considered as the ones that have discrete values based on their physical nature or manufacturing standards. We present, for the first time, a tailored global optimization approach for the design of intensified shell and tube heat exchanger: Set trimming procedure. We compare the computational performance of our set trimming procedure, exhaustive enumeration, and commercial solvers. The proposed three objectives have certain competitive relationships and multi‐objective optimization is performed to analyze the conflicts among them. Two literature examples are tested for illustration purposes. The solution results indicate that the intensified heat exchanger designed using tube inserts compares well to the regular heat exchanger using plain tube. Compared with commercial solvers, set trimming procedure runs fast and can converge to global optimum without initial value. The pareto‐optimal solutions of multi‐objective optimization provide holistic trade‐offs between different objectives, hence helping the process designer make proper decisions for the design of intensified shell and tube heat exchangers.

show abstract

A comprehensive review of recent advancements and developments in heat exchanger network synthesis techniques

Xu,

Liu,

Zhang

et al. 2023

Sci. China Technol. Sci.

View full text Add to dashboard Cite

Non-structural model for heat exchanger network synthesis allowing for stream splitting

Cited by 27 publications

References 51 publications

Synthesis of stream‐split heat exchanger networks using non‐structural model considering serial equipment in stream branches and submixing of substreams

Synthesis of stream‐split heat exchanger networks using non‐structural model considering serial equipment in stream branches and submixing of substreams

Global optimization of the design of intensified shell and tube heat exchanger using tube inserts

A comprehensive review of recent advancements and developments in heat exchanger network synthesis techniques

Contact Info

Product

Resources

About