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Fluids
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Heat Transfer in the Industry
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Heat Transfer in the Industry

A special issue of Fluids (ISSN 2311-5521). This special issue belongs to the section "Heat and Mass Transfer".

Deadline for manuscript submissions: 30 April 2026 | Viewed by 1567

Special Issue Editor

Dr. Paloma Martínez-Merino

E-Mail Website
Guest Editor
Applied Physics Department, University of Vigo, E-36310 Vigo, Spain
Interests: heat transfer; nanofluids; solar energy; thermal conductivity; isobaric specific heat; parabolic trough collectors
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Heat transfer plays a key role in numerous industrial processes, from manufacturing to energy production, chemical processing, and beyond. Recent advancements in both experimental and numerical techniques have significantly improved our understanding of thermal transport phenomena, leading to the development of more efficient, sustainable, and innovative industrial systems. The aim of this Special Issue is to bring together original research that addresses the challenges and opportunities of heat transfer across a wide range of industrial applications.

Topics of interest for this Special Issue include the following:

  • Advanced heat exchanger design and optimization;
  • Phase-change phenomena in industrial applications (e.g., boiling, condensation);
  • Heat transfer in additive manufacturing and advanced manufacturing techniques;
  • Thermal management in industrial energy systems;
  • Innovations in cooling and heating systems for industrial use;
  • Experimental techniques for studying heat transfer in complex industrial systems;
  • Computational modeling and the simulation of heat transfer in industrial environments;
  • Energy-efficient heat transfer solutions in the context of sustainability.

Dr. Paloma Martínez-Merino
Guest Editor

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. Fluids 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 1800 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.

Keywords

  • industrial heat transfer
  • thermal management
  • energy efficiency
  • heat exchangers
  • phase-change heat transfer
  • computational thermal modeling
  • experimental heat transfer techniques
  • sustainable thermal systems

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Further information on MDPI's Special Issue policies can be found here.

Published Papers (2 papers)

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Research

18 pages, 4029 KB  
Article
Effects of the Orifice and Absorber Grid Designs on Coolant Mixing at the Inlet of an RITM-Type SMR Fuel Assembly
by Anton Riazanov, Sergei Dmitriev, Denis Doronkov, Aleksandr Dobrov, Aleksey Pronin, Dmitriy Solntsev, Tatiana Demkina, Daniil Kuritsin and Danil Nikolaev
Fluids 2025, 10(11), 278; https://doi.org/10.3390/fluids10110278 (registering DOI) - 24 Oct 2025
Abstract
This article presents the results of an experimental study on the hydrodynamics of the coolant at the inlet of the fuel assembly in the RITM reactor core. The importance of these studies stems from the significant impact that inlet flow conditions have on [...] Read more.
This article presents the results of an experimental study on the hydrodynamics of the coolant at the inlet of the fuel assembly in the RITM reactor core. The importance of these studies stems from the significant impact that inlet flow conditions have on the flow structure within a fuel assembly. A significant variation in axial velocity and local flow rates can greatly affect the heat exchange processes within the fuel assembly, potentially compromising the safety of the core operation. The aim of this work was to investigate the effect of different designs of orifice inlet devices and integrated absorber grids on the flow pattern of the coolant in the rod bundle of the fuel assembly. To achieve this goal, experiments were conducted on a scaled model of the inlet section of the fuel assembly, which included all the structural components of the actual fuel assembly, from the orifice inlet device to the second spacer grids. The test model was scaled down by a factor of 5.8 from the original fuel assembly. Two methods were used to study the hydrodynamics: dynamic pressure probe measurements and the tracer injection technique. The studies were conducted in several sections along the length of the test model, covering its entire cross-section. The choice of measurement locations was determined by the design features of the test model. The loss coefficient (K) of the orifice inlet device in fully open and maximally closed positions was experimentally determined. The features of the coolant flow at the inlet of the fuel assembly were visualized using axial velocity plots in cross-sections, as well as concentration distribution plots for the injected tracer. The geometry of the inlet orifice device at the fuel assembly has a significant impact on the pattern of axial flow velocity up to the center of the fuel bundle, between the first and second spacing grids. Two zones of low axial velocity are created at the edges of the fuel element cover, parallel to the mounting plates, at the entrance to the fuel bundle. These unevennesses in the axial speed are evened out before reaching the second grid. The attachment plates of the fuel elements to the diffuser greatly influence the intensity and direction of flow mixing. A comparative analysis of the effectiveness of two types of integrated absorber grids was performed. The experimental results were used to justify design modifications of individual elements of the fuel assembly and to validate the hydraulic performance of new core designs. Additionally, the experimental data can be used to validate CFD codes. Full article
(This article belongs to the Special Issue Heat Transfer in the Industry)
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27 pages, 7643 KB  
Article
Enhancing Thermal Comfort in Buildings: A Computational Fluid Dynamics Study of Multi-Layer Encapsulated Phase Change Materials–Integrated Bricks for Energy Management
by Farzad Ghafoorian, Mehdi Mehrpooya, Seyed Reza Mirmotahari and Mahmood Shafiee
Fluids 2025, 10(7), 181; https://doi.org/10.3390/fluids10070181 - 10 Jul 2025
Viewed by 1303
Abstract
Thermal energy storage plays a vital role in enhancing the efficiency of energy systems, particularly in building applications. Phase change materials (PCMs) have gained significant attention as a passive solution for energy management within building envelopes. This study examines the thermal performance of [...] Read more.
Thermal energy storage plays a vital role in enhancing the efficiency of energy systems, particularly in building applications. Phase change materials (PCMs) have gained significant attention as a passive solution for energy management within building envelopes. This study examines the thermal performance of encapsulated PCMs integrated into bricks as a passive cooling method, taking into account the outdoor climate conditions to enhance indoor thermal comfort throughout summer and winter seasons. A computational fluid dynamics (CFDs) analysis is performed to compare three configurations: a conventional brick, a brick with a single PCM layer, and a brick with three PCM layers. Results indicate that the three-layer PCM configuration provides the most effective thermal regulation, reducing peak indoor temperature fluctuations by up to 4 °C in summer and stabilizing indoor temperature during winter. Also, the second and third PCM layers exhibit minimal latent heat absorption, with their liquid fractions indicating that melting does not occur. As a result, these layers primarily serve as thermal insulation—limiting heat ingress in summer and reducing heat loss in winter. During summer, the absence of the first PCM layer in the single-layer configuration leads to faster thermal penetration, causing the brick to reach peak temperatures approximately two hours earlier in the afternoon and increasing the temperature by about 5 °C. Full article
(This article belongs to the Special Issue Heat Transfer in the Industry)
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