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Processes
Special Issues
Heat and Mass Transfer in Energy Engineering
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Heat and Mass Transfer in Energy Engineering

A special issue of Processes (ISSN 2227-9717). This special issue belongs to the section "Energy Systems".

Deadline for manuscript submissions: 15 May 2024 | Viewed by 2061

Special Issue Editors

Prof. Dr. Vladimir D. Stevanovic

E-Mail Website
Guest Editor
Faculty of Mechanical Engineering, University of Belgrade, Belgrade, Serbia
Interests: thermalhydraulics and hydrodynamics; heat and mass transfer; numerical simulations; energy efficiency; two-phase flow; thermal energy storage
Prof. Dr. Ritunesh Kumar

E-Mail Website
Guest Editor
Department of Mechanical Engineering, Indian Institute of Technology, Indore 453552, India
Interests: desiccant cooling systems; renewable energy; heat transfer

Special Issue Information

Dear Colleagues,

Heat and mass transfer processes are essential for energy engineering in order to design and operate safe, reliable, cost-effective and environmentally acceptable energy plants and equipment. All branches of energy engineering are more or less based and depend on the knowledge of principles and phenomena of heat and mass transfer—conduction, convection, radiation, diffusion, phases interface transfer, as well as on the mastering and applying experimental, theoretical and methods of numerical simulations. These days, extensive research and development in the field of heat and mass transfer for energy engineering span form large macroscopic scales to nanoscales systems and devices, with the application in thermal and nuclear power engineering, energy engineering for the utilization of biomass, solar, wind, geothermal and hydro renewables, hydrogen production, transport, and utilization, as well as energy storage, residential, industrial and public heating, cooling, prime movers in transportation, etc.

The journal Processes invites you to publish the original results of your scientific research and engineering development in the field of heat and mass transfer with application in energy engineering in this Special Issue. Topics include, but are not limited to:

  • Fundamental research in heat and mass transfer with the foreseen application in energy engineering;
  • Advanced designs of energy devices, equipment and plants with heat and mass transfer processes;
  • New experimental, theoretical and methods of numerical simulations for the investigation and prediction of heat and mass transfer with application in energy engineering.

The submitted papers will be peer reviewed. It is believed that this open access Special Issue will have a remarkable influence within the academic and engineering communities, with a fast dissemination of new knowledge and with a valuable contribution to the deployment of new engineering designs for the welfare of society.

Prof. Dr. Vladimir D. Stevanovic
Prof. Dr. Ritunesh Kumar
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Processes is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Published Papers (2 papers)

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Research

29 pages, 12890 KiB  
Article
Numerical Study of a Heat Exchanger with a Rotating Tube Using Nanofluids under Transitional Flow
by Mohamed A. El-Magid Mohamed, Andrés Meana-Fernández, Juan M. González-Caballín, Anthony Bowman and Antonio José Gutiérrez-Trashorras
Processes 2024, 12(1), 222; https://doi.org/10.3390/pr12010222 - 19 Jan 2024
Viewed by 738
Abstract
Improvements in heat exchanger thermal efficiency are crucial for achieving energy use and cost reductions. The use of nanofluids and the rotation of the exchanger inner tube may enhance heat transfer and exchanger efficiency. In this work, after having performed experiments on such [...] Read more.
Improvements in heat exchanger thermal efficiency are crucial for achieving energy use and cost reductions. The use of nanofluids and the rotation of the exchanger inner tube may enhance heat transfer and exchanger efficiency. In this work, after having performed experiments on such a heat exchanger, a three dimensional numerical model was developed to simulate the transitional forced convection flow of a horizontal double-tube heat exchanger, with the aim of obtaining insight into the effects of the inner tube rotation, fluid flow rate and type of nanofluid employed. It was found that an increase in the nanoparticle concentration up to 3% increased the exchanger efficiency. Al2O3, Al2O3-Cu and Cu-water nanofluids were studied, with the Cu-water being the fluid with the best performance (19.33% improvement). Heat transfer was enhanced with inner tube rotation up to 500 rpm (41.2%). Nevertheless, pressure drop and friction values were increased due to both phenomena, leading to higher pumping power values for the operation of the heat exchanger. Hence, a balance between the performance and pumping power increase must be considered when modifications are made on a heat exchanger. The development of the numerical model might help in further optimizing, redesigning and scaling up heat exchangers. Full article
(This article belongs to the Special Issue Heat and Mass Transfer in Energy Engineering)
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14 pages, 2719 KiB  
Article
Natural Convection in a Circular Enclosure with Four Cylinders under Magnetic Field: Application to Heat Exchanger
by Raouia Azzouz and Mohamed Bechir Ben Hamida
Processes 2023, 11(8), 2444; https://doi.org/10.3390/pr11082444 - 14 Aug 2023
Cited by 4 | Viewed by 820
Abstract
This paper documents the 2D numerical study of magnetohydrodynamic unsteady natural convective heat transfer in a circular enclosure with four heating cylinders in both the horizontal and the vertical mid-plane. The fluid is an incompressible Newtonian fluid. The main transport equations based on [...] Read more.
This paper documents the 2D numerical study of magnetohydrodynamic unsteady natural convective heat transfer in a circular enclosure with four heating cylinders in both the horizontal and the vertical mid-plane. The fluid is an incompressible Newtonian fluid. The main transport equations based on the conservation of mass, momentum, and energy are calculated and solved using a finite element numerical solver with the following parameter ranges: dimensionless distance between cylinders S = 0.05–0.29, Rayleigh number Ra=103–106, and Hartmann number for Ha = 0–120. COMSOL Multiphysics, a numerical simulation program, was used to solve the governing equations. It was demonstrated that for lower Ra values, heat transfer through an applied magnetic field is unaffected for a specific S value because the mechanism of transport is diffusion, whereas for larger Ra, there is a complex interaction among magnetic field and physical thermal properties. The features of the heat transfer rate are determined by the interaction. The Nusselt number virtually stays constant as Ha rises at smaller Ra. However, at high Ra, the Nusselt number initially declines with Ha and thereafter essentially stays constant, and at high Ra values, the switch from conduction to convective heat transfer takes place. Additionally, Nu rises slightly with S at increasing Ra. Full article
(This article belongs to the Special Issue Heat and Mass Transfer in Energy Engineering)
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