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Advances in Thermal Management and Heat Transfer
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Advances in Thermal Management and Heat Transfer

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "J: Thermal Management".

Deadline for manuscript submissions: 28 August 2024 | Viewed by 3728

Special Issue Editor

Dr. Zhenyu Liu

E-Mail Website
Guest Editor
School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Interests: micro-/nanoscale flow and heat transfer; pore-scale transport modelling; enhanced heat transfer

Special Issue Information

Dear Colleagues,

The Guest Editor is inviting submissions to a Special Issue of Energies on the subject area of “Advances in Thermal Management and Heat Transfer”. Thermal management has become quite challenging in recent years, such as in the fields of electronics, vehicle and data centers, etc., and many leading-edge techniques have been developed for requirements associated with it, such as high heat flux density, high compactness, and light weight. Micro-/nanoscale heat transfer provides potential solutions to advanced thermal management technologies (microchannel, heat pipe, cold plate and vacuum chamber, etc.). Moreover, the innovative materials and related processing technology are also interesting topics for thermal management and heat transfer researchers.

This Special Issue will deal with micro-/nanoscale heat transfer and innovative materials for thermal management technologies. Topics of interest for publication include but are not limited to:

  • Conductive heat transfer in confined structure;
  • Multiphase flow and heat transfer;
  • Enhanced heat transfer with phase change;
  • Thermal interface material;
  • 1D/2D material in thermal design;
  • Thermal management modelling, analysis, and strategy;
  • Low-carbon thermal management.

Dr. Zhenyu Liu
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. Energies is an international peer-reviewed open access semimonthly 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 2600 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

  • thermal management
  • heat transfer
  • micro-/nanoscale
  • multiphase flow
  • phase change

Published Papers (3 papers)

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Research

15 pages, 5736 KiB  
Article
Numerical Study on Heat and Mass Transfer of Evaporated Binary Zeotropic Mixtures in Porous Structure
by Bo Zhang, Peilin Cui, Zhiguo Wang, Zhiwei Sun, Bo Kong, Wei Wang, Wen Du, Ping Huang, Zhenhai Pan and Zhenyu Liu
Energies 2023, 16(18), 6526; https://doi.org/10.3390/en16186526 - 11 Sep 2023
Viewed by 777
Abstract
This study investigates the heat and mass transfer characteristics of a binary mixture (R134a/R245fa) evaporated in a porous medium. The Eulerian model coupled with the multiphase VOF model and species transport equations is employed to establish a multi-component evaporation model. The effects of [...] Read more.
This study investigates the heat and mass transfer characteristics of a binary mixture (R134a/R245fa) evaporated in a porous medium. The Eulerian model coupled with the multiphase VOF model and species transport equations is employed to establish a multi-component evaporation model. The effects of heat flux ranging from 200 kW/m2 to 500 kW/m2, porosity ranging from 0.4 to 0.6, and mass fraction ratios (R134a/R245fa) of 3:7, 5:5, and 7:3 are explored. The results indicate that an increase in heat flux contributes to an increase in the evaporation rate. For the overall evaporation rate, the evaporation rates of R134a and R245fa improve by 11.3%, 6.9%, and 16.3%, respectively, while the maximum improvement in heat transfer coefficient is only 1.4%. The maximum evaporation rate is achieved at intermediate porosity in the porous medium, and the highest heat transfer coefficient is obtained at a porosity of 0.4. With the increase in mass fraction, the evaporation rate of the corresponding species also increases, while the overall evaporation rate and heat transfer coefficient remain almost unchanged. Full article
(This article belongs to the Special Issue Advances in Thermal Management and Heat Transfer)
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18 pages, 5413 KiB  
Article
Separated Liquid–Vapor Flow Analysis in a Mini-Channel with Mesh Walls in the Closed-Loop Two-Phase Wicked Thermosyphon (CLTPWT)
by Karthik S. Remella and Frank M. Gerner
Energies 2023, 16(13), 5045; https://doi.org/10.3390/en16135045 - 29 Jun 2023
Viewed by 707
Abstract
A metallic wire mesh screen, wire diameter of approximately 50 μm, is folded into ~80 “accordion-shaped” mini-channels and placed inside the evaporator package of a novel passive thermal management device for cooling overhead light-emitting diodes (LEDs) used in factory floors and high-bay facilities. [...] Read more.
A metallic wire mesh screen, wire diameter of approximately 50 μm, is folded into ~80 “accordion-shaped” mini-channels and placed inside the evaporator package of a novel passive thermal management device for cooling overhead light-emitting diodes (LEDs) used in factory floors and high-bay facilities. The thermal power dissipated via these devices ranges between 75 W and 171 W. The channel walls (screen) wick liquid water from the porous wick (located centrally above the screen) and facilitate its evaporation. The closed-loop tests on this device confirm that the two-phase mixture quality exiting the evaporator is approximately 0.2. This paper presents a steady-state numerical model of this separated liquid–vapor flow in a single mini-rectangular channel (900 μm × 2000 μm, 4 cm long) with wire mesh-screen walls. The primary objective of the model is to estimate the pressure drops occurring in this two-phase flow. The model initially assumes a flat liquid–vapor interface along the channel and uses an iterative approach to estimate its final meniscus shape (curvature). In addition to the temperature distribution along the screen walls, this paper also discusses the velocity and pressure distributions in both liquid and vapor regions. It also helps understand the liquid–vapor interfacial shear in this flow configuration and proposes a flow-limiting condition for the device by predicting flow reversal in the channel. Full article
(This article belongs to the Special Issue Advances in Thermal Management and Heat Transfer)
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10 pages, 2810 KiB  
Article
Air-Type Vacuum-Tube Solar Collector Design and Heat Collection Performance Test
by Chuanhui Zhu, Xiaodong Dong, Shubin Yan, Yang Cui and Quanquan Luo
Energies 2022, 15(15), 5679; https://doi.org/10.3390/en15155679 - 5 Aug 2022
Cited by 4 | Viewed by 1664
Abstract
With the continuous development and utilization of clean energy, the thermal utilization of solar energy is an important research direction. In view of the problems of the low utilization rate of solar heat in alpine regions of solar energy, an air-type vacuum-tube solar [...] Read more.
With the continuous development and utilization of clean energy, the thermal utilization of solar energy is an important research direction. In view of the problems of the low utilization rate of solar heat in alpine regions of solar energy, an air-type vacuum-tube solar collector (AVSC) with air as the heat-exchange medium was designed. The vacuum tube of the solar heat collector adopted a double-pass spiral direct-current structure, and the vacuum tube had a built-in heat-storage rod. In order to test the heat collection performance of the designed air evacuated-tube solar collector, a heat collection performance test of the collector was conducted. The results showed that the average heat collection efficiency of the vacuum tube solar collector without phase-change heat-storage rods was 38%. The evacuated-tube solar collector using water as the heat transfer medium had an average heat collection efficiency of 58%. The average equivalent heat collection efficiency of the AVSC with a built-in phase-change heat-storage rod was 61%. Full article
(This article belongs to the Special Issue Advances in Thermal Management and Heat Transfer)
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