Case study of the metamodels of a shell-and-tube heat exchanger

Abstract We present a new methodology for designing a heat exchanger that explicitly considers both static and transient performance characteristics. The proposed approach leverages 1) a highly detailed, albeit static model that captures the complex nonlinear relationship between heat exchanger geometry and heat transfer coefficients, and 2) a reduced-order dynamic model of the heat exchanger that approximates the geometry detailed in the static model. In order to optimize the component design for both static and transient performance metrics, pole locations of the corresponding linearized model are penalized in the cost function of the proposed optimization algorithm in order to move dominant poles further into the left half complex plane. Through a simulated case study for a shell and tube heat exchanger, we demonstrate how the proposed algorithm exploits the trade off between static design metrics, including mass and footprint, and the rate at which heat is removed from the primary fluid.

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Optimisation Techniques for Managing the Project Sustainability Objective: Application to a Shell and Tube Heat Exchanger

Sustainability ◽

10.3390/su12114480 ◽

2020 ◽

Vol 12 (11) ◽

pp. 4480

Author(s):

Juan José Cartelle Barros ◽

Manuel Lara Coira ◽

María Pilar de la Cruz López ◽

Alfredo del Caño Gochi ◽

Isabel Soares

Keyword(s):

Heat Exchanger ◽

Search Algorithm ◽

Environmental Indicators ◽

Tube Heat Exchanger ◽

Management Objectives ◽

Shell And Tube ◽

Project Sustainability ◽

Optimisation Techniques ◽

Optimisation Technique

In addition to traditional project management objectives (cost, time, scope and quality, among others), it is now necessary to include a global sustainability objective in all projects, regardless of their nature and scale. The processes for managing this objective may include sub-processes for optimising the sustainability of some or all of the project’s deliverables. In this paper an integrated optimisation technique was applied to optimise the design of a shell and tube heat exchanger (STHE) by taking into account economic, social and environmental indicators. A case study previously analysed in the literature, although with different objectives and scope, was considered for such a purpose. Diverse sets of weights were defined for the environmental impacts, as well as two additional cases. In the first one, all the indicators where assessed in a linear way. Non-linearities were studied in the second one. Both non-nature-inspired (exhaustive search and Monte Carlo simulation) and nature-inspired (Particle Swarm Optimisation, Crow Search Algorithm and Non-dominated Sorting Genetic Algorithm-II) optimisation techniques were used to solve the problem. The results were presented and discussed in depth. The findings show the necessity of applying these kinds of methodologies in the design of energy systems and, in particular, STHEs.

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NUMERICAL INVESTIGATION OF THE EFFECT OF BAFFLE ORIENTATION AND BAFFLE CUT ON HEAT TRANSFER AND PRESSURE DROP OF A SHELL AND TUBE HEAT EXCHANGER

Equipment ◽

10.1615/ihtc13.p18.230 ◽

2006 ◽

Cited By ~ 1

Author(s):

K. Mohammadi ◽

H. Muller-Steinhagen ◽

W. Heidemann

Keyword(s):

Heat Transfer ◽

Heat Exchanger ◽

Pressure Drop ◽

Numerical Investigation ◽

Tube Heat Exchanger ◽

Shell And Tube

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A Shell-and-Tube Heat Exchanger Optimization by Differential Evolution

10.26678/abcm.encit2016.cit2016-0046 ◽

2016 ◽

Author(s):

Leonardo Cavalheiro Martinez ◽

Viviana Mariani ◽

Marcos Batistella Lopes

Keyword(s):

Heat Exchanger ◽

Differential Evolution ◽

Tube Heat Exchanger ◽

Shell And Tube

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Numerical simulation of the effect of baffle cut and baffle spacing on shell side heat exchanger performance using CFD

Chemical Product and Process Modeling ◽

10.1515/cppm-2020-0033 ◽

2020 ◽

Vol 0 (0) ◽

Author(s):

Swanand Gaikwad ◽

Ashish Parmar

Keyword(s):

Heat Transfer ◽

Heat Transfer Coefficient ◽

Heat Exchanger ◽

Pressure Drop ◽

Transfer Coefficient ◽

Numerical Results ◽

Shell Side ◽

Tube Heat Exchanger ◽

Shell And Tube ◽

Two Parameters

AbstractHeat exchangers possess a significant role in energy transmission and energy generation in most industries. In this work, a three-dimensional simulation has been carried out of a shell and tube heat exchanger (STHX) consisting of segmental baffles. The investigation involves using the commercial code of ANSYS CFX, which incorporates the modeling, meshing, and usage of the Finite Element Method to yield numerical results. Much work is available in the literature regarding the effect of baffle cut and baffle spacing as two different entities, but some uncertainty pertains when we discuss the combination of these two parameters. This study aims to find an appropriate mix of baffle cut and baffle spacing for the efficient functioning of a shell and tube heat exchanger. Two parameters are tested: the baffle cuts at 30, 35, 40% of the shell-inside diameter, and the baffle spacing’s to fit 6,8,10 baffles within the heat exchanger. The numerical results showed the role of the studied parameters on the shell side heat transfer coefficient and the pressure drop in the shell and tube heat exchanger. The investigation shows an increase in the shell side heat transfer coefficient of 13.13% when going from 6 to 8 baffle configuration and a 23.10% acclivity for the change of six baffles to 10, for a specific baffle cut. Evidence also shows a rise in the pressure drop with an increase in the baffle spacing from the ranges of 44–46.79%, which can be controlled by managing the baffle cut provided.

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