Multi-criteria decision-making under uncertainty conditions of a shell-and-tube heat exchanger

Saldanha, Wagner Henrique; Arrieta, Felipe Raúl Ponce; Ekel, Petr; Machado-Coelho, Thiago Melo; Soares, Gustavo Luís

doi:10.1016/j.ijheatmasstransfer.2020.119716

Cited by 14 publications

(3 citation statements)

References 51 publications

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“…There are different heat exchanger configurations, such as shell and tube, plate, coil, and double tube, among others, which can be used in various heat transfer applications that require specific conditions and specifications for effective heat transmission. However, these types of equipment can present a high investment cost, which has lead to the search for optimization methods, as seen in the literature [5]. Models and optimization tools based on energy and financial balances have been analyzed to improve the thermal-hydraulic performance [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Experimental and Computational Fluid Dynamic—CFD Analysis Simulation of Heat Transfer Using Graphene Nanoplatelets GNP/Water in the Double Tube Heat Exchanger

Lima,

Ochoa,

da Costa

et al. 2023

Processes

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This study investigates and compares the experimental heat transfer performance and simulation via computational fluid dynamics (CFD) of graphene nanoplatelets (GNP) and water nanofluids GNP/water in the double-tube-type heat exchanger (DTHE). Tests were conducted with water/water and GNP/water fluids, with the nanofluid for the hot-fluid circuit and water for the cold-fluid circuit, with counterflow direction, varying the nanofluid concentrations by weight (wt%) at 0.0125%, 0.025%, and 0.050%, the operating temperature at 50 and 60 °C, and Reynolds numbers between 2000–6000. The results showed that 0.025 wt% GNP presented better thermal performance, with a 28% increase in the temperature gain. The 0.025 wt% GNP had slightly better performance for the Nusselt number (Nu), and the 0.05 wt% GNP had a slightly better thermal effectiveness. The comparison between the experimental values showed good agreement with those calculated by empirical correlations and the CFD model, with maximum and minimum relative error values of 9% and 1%, respectively, when the Petukhov equation was used.

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Section: Introductionmentioning

confidence: 99%

Experimental and Computational Fluid Dynamic—CFD Analysis Simulation of Heat Transfer Using Graphene Nanoplatelets GNP/Water in the Double Tube Heat Exchanger

Lima,

Ochoa,

da Costa

et al. 2023

Processes

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“…AHP has particular application in group decision making [10], and is now used around the world in a wide variety of decision situations, in fields such as government, business, industry, healthcare, education, and energy [11]. The AHP method was pioneered by Professor Saaty in the 1970s, and remains the standard method for this application.…”

Section: Introductionmentioning

confidence: 99%

Comparative Evaluation of Direct Disposal and Pyro-SFR Nuclear Fuel Cycle Alternatives Using Multi Criteria Decision Making in Korea

Kim

Cho

2021

Energies

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The Korean government is currently evaluating two alternatives, direct disposal and pyroprocessing, for the disposal of spent nuclear fuel. This paper presents the ranking results of comparing and evaluating direct disposal and pyro-SFR fuel cycle alternatives using multi-criteria decision-making methods such as AHP, TOPSIS, and PROMETHEE. In considering the various evaluation criteria involved in these two alternatives, we aimed to determine the optimal choice in terms of the economic and social conditions of Korea. The evaluation criteria considered were safety, resource availability, environmental impact, economics, nuclear proliferation resistance, and public acceptance. The results show that the pyro-SFR fuel cycle alternative is more advantageous than direct disposal in the AHP and TOPSIS methods, whereas direct disposal is more advantageous in the PROMETHEE method because the ranking is reversed. TOPSIS assigns the ideal value and the most negative value among the input values to each criterion as a parameter reflecting the concept of distance between the best alternative and the worst alternative. In contrast, the PROMETHEE method first selects the preference function including the preference threshold, and calculates the preferred outflow and the preferred inflow for the detailed evaluation indicators. Therefore, differences exist in the methodologies of multi-criteria decision making. Nonetheless, the analysis results of the back-end fuel cycle option can greatly contribute to establishing a nuclear policy for the back-end nuclear fuel cycle, and these efforts will enable sustainable nuclear power generation.

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“…The advantages of such thermal equipment are justified by its reliability, robustness, versatility, and applicability over wide ranges of operation pressures and temperatures. [1] Therefore, it is of great importance to design the optimal STHE to enhance heat transfer performance, [2,3] decrease device sizes, [4,5] and lower economic costs. [6][7][8] Over the past few decades, significant efforts have been devoted with broad applications to industrial practice, bringing considerable energy saving, [9] economic profit, [10][11][12] and environmental benefits.…”

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confidence: 99%

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

Chang,

Shen

2023

Can J Chem Eng

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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.

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Multi-criteria decision-making under uncertainty conditions of a shell-and-tube heat exchanger

Cited by 14 publications

References 51 publications

Experimental and Computational Fluid Dynamic—CFD Analysis Simulation of Heat Transfer Using Graphene Nanoplatelets GNP/Water in the Double Tube Heat Exchanger

Experimental and Computational Fluid Dynamic—CFD Analysis Simulation of Heat Transfer Using Graphene Nanoplatelets GNP/Water in the Double Tube Heat Exchanger

Comparative Evaluation of Direct Disposal and Pyro-SFR Nuclear Fuel Cycle Alternatives Using Multi Criteria Decision Making in Korea

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

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