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Condensation Heat Transfer
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Condensation Heat Transfer

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

Deadline for manuscript submissions: closed (20 September 2021) | Viewed by 4817

Special Issue Editor

Dr. Junho Oh

E-Mail Website
Guest Editor
Department of Mechanical Engineering, University College London, Torrington Place, London WC1E 7JE, UK
Interests: phase change heat transfer; nanoengineering; wettability; heat transfer; interfacial science; energy–water–health nexus

Special Issue Information

Dear Colleagues,

I would like to convey a warm invitation on behalf of the editorial office to all colleagues who are interested in submitting a research article to the Special Issue in Energies (ISSN 1996-1073; CODEN: ENERGA) on “Condensation Heat Transfer”. Condensation heat transfer is ubiquitous in nature and our daily lives, and substantial to various engineering applications such as energy production/harvesting and HVAC&R (heating, ventilation, air conditioning, and refrigeration). In addition, due to the recent advances in nanoengineering and demands on heat exchangers for higher energy efficiency or concentrated thermal loads for cooling, numerous types of research are ongoing in micro- or nanoscale condensation heat transfer.

This topical Issue will be dedicated not only to fundamentals and theoretical works but also to applied, numerical, and experimental research. Energies has broad authorship and readership, not only in mechanical/electrical/chemical engineering or material science but also in physics, mathematics, and chemistry. Interdisciplinary studies will be highly appreciated. We are looking forward to introducing a novel and fascinating original research article or an insightful review article on the recent advances in the field of condensation heat transfer.

Dr. Junho Oh
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

  • Condensation
  • Phase change heat transfer
  • Energy harvesting
  • Electronics cooling
  • Heat exchanger
  • Filmwise/dropwise condensation
  • Nanoengineered surface
  • Hydrophobic surface
  • Heating, air conditioning, ventilation, and refrigeration (HVAC&R)
  • Theoretical/numerical/experimental

Published Papers (2 papers)

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Research

20 pages, 4015 KiB  
Article
Condensation of Hydrocarbons in Compact Smooth and Microfinned Tubes
by Ehsan Allymehr, Ángel Álvarez Pardiñas, Trygve Magne Eikevik and Armin Hafner
Energies 2021, 14(9), 2647; https://doi.org/10.3390/en14092647 - 05 May 2021
Cited by 6 | Viewed by 2361
Abstract
A database for flowing condensation of three hydrocarbons, namely propane (R290), isobutane (R600a), and propylene (R1270), is extended by experimental tests in a smooth tube and two microfinned tubes with an increase of heat exchange area of 1.51 and 2.63, respectively. The outer [...] Read more.
A database for flowing condensation of three hydrocarbons, namely propane (R290), isobutane (R600a), and propylene (R1270), is extended by experimental tests in a smooth tube and two microfinned tubes with an increase of heat exchange area of 1.51 and 2.63, respectively. The outer diameter for all of the test tubes was 5 mm. Heat transfer coefficient and pressure drop are compared between the fluids and tubes. Tests were conducted at saturation temperatures of 35 °C and mass fluxes between 200 to 500 kgm−2s−1. Results show that isobutane (R600a) has a higher heat transfer coefficient and pressure drop while propylene (R1270) and propane (R290) present very similar characteristics. Both microfinned tubes increase the heat transfer coefficient compared to the smooth tube, but with different magnitude and tendencies and almost independently of the fluid tested. The maximum increase of heat transfer coefficient reached values of up to 1.8 while the maximum increase in pressure drop was by a factor of 1.7. Data have been compared with predictive methods exhibiting accurate correlation for smooth tube, while the accuracy of results for the microfinned are dependent on the type of tube and fluid used. Full article
(This article belongs to the Special Issue Condensation Heat Transfer)
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19 pages, 1909 KiB  
Article
Modeling Study on Heat Transfer in Marangoni Dropwise Condensation for Ethanol-Water Mixture Vapors
by Jinshi Wang, Ziqiang Ma, Yong Li, Weiqi Liu and Gen Li
Energies 2020, 13(24), 6726; https://doi.org/10.3390/en13246726 - 20 Dec 2020
Viewed by 1690
Abstract
In this paper, a model was developed to predict the heat transfer characteristics of Marangoni dropwise condensation. In accordance with the feature of Marangoni condensation, condensation was treated as dropwise condensation of mixture vapors. The condensation space was divided into two parts: the [...] Read more.
In this paper, a model was developed to predict the heat transfer characteristics of Marangoni dropwise condensation. In accordance with the feature of Marangoni condensation, condensation was treated as dropwise condensation of mixture vapors. The condensation space was divided into two parts: the vapor diffusion layer and the condensate layer. For the condensate layer, the classical heat transfer calculation method of dropwise condensation was imitated to obtain the heat transfer characteristics. For the vapor diffusion layer, the heat transfer characteristics were achieved by solving the conservation equations. These heat transfer characteristics were coupled through the conjunct boundary, which was the vapor-liquid interface. The model was applied to the condensation of water-ethanol mixture vapors. A comparison with the existing experimental data showed that the developed model could basically reflect the influences of vapor-to-surface temperature difference, vapor concentration, vapor pressure, and vapor velocity on heat transfer characteristic of Marangoni condensation. Results showed that some differences existed between the calculation results and experimental results, but the prediction deviation of the model could be acceptable in the range of vapor-to-surface temperature difference where the condensation heat transfer coefficients reached peak values. Full article
(This article belongs to the Special Issue Condensation Heat Transfer)
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