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Phase Change Materials: Design and Applications—Volume II

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Materials Science and Engineering".

Deadline for manuscript submissions: closed (29 February 2024) | Viewed by 5052

Special Issue Editor

Special Issue Information

Dear Colleagues,

The first Special Issue on “Phase Change Materials: Design and Applications” was a great success, with a total of 10 papers accepted for publication. We have therefore decided to extend the opportunity to other researchers who were not able to submit their work to this Special Issue, and it is with this in mind that we are extending this invitation to the Phase Change Materials scientific community to submit your papers to this Special Issue on “Phase Change Materials: Design and Applications—Volume II”, which is devoted to some of the topics of Volume I as well as new ones.

In recent years, science and technology have revolutionized our way of life, improving wellbeing and comfort for all humankind. The discovery of new materials with unique features at the macro- and nanoscales has played a significant part in this advancement. The possibility of producing materials able to perform different functions and of responding to external stimuli will undoubtedly be an extremely important research area for the foreseeable future.

Thermal energy storage systems with phase change materials (PCMs) have been investigated for several applications as they constitute a promising and sustainable method for reduction in fuel and electrical energy consumption. PCMs are compounds that can store thermal energy in the form of latent heat during their phase transition. PCMs have the ability to accumulate and store plenty of energy. The activation of this high storage potential of PCMs is accomplished when their phase is changed.

This Special Issue aims to attract all researchers working in this research field and will collect new findings and recent advances on the development, synthesis, structure–activity relationships, and future applications of PCMs. Research manuscripts and a limited number of review manuscripts are encouraged in the following areas:

  • Batteries
  • Building/construction
  • Energy/thermal storage
  • Environmental effects
  • Fuel cells
  • Recycling
  • Solar energy utilization
  • Structure–properties relationship
  • Sustainable energy and engineering systems

Dr. Ioannis Kartsonakis
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. Applied Sciences 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 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.

Keywords

  • cooling
  • eutectics
  • heat exchanger
  • heat transfer fluid
  • latent heat
  • liquid–gas PCM
  • solid–gas PCM
  • solid–liquid PCM
  • solid–solid PCM
  • thermal conductivity
  • thermal storage
  • transition temperature

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Published Papers (3 papers)

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Research

13 pages, 5718 KiB  
Article
Assessment of Thermal Performance of Phase-Change Material-Based Multilayer Protective Clothing Exposed to Contact and Radiant Heat
by Morgan Renard, Waldemar Machnowski and Adam K. Puszkarz
Appl. Sci. 2023, 13(16), 9447; https://doi.org/10.3390/app13169447 - 21 Aug 2023
Cited by 2 | Viewed by 1575
Abstract
The research presented in this article concerns the thermal properties of multilayer protective clothing, specifically, the impact of phase-change material (PCM) incorporation on the occurring heat transfer. Multilayer textile assemblies with PCM inserts (macrocapsules containing n-octadecane) and reference assemblies with PP inserts (macrogranules [...] Read more.
The research presented in this article concerns the thermal properties of multilayer protective clothing, specifically, the impact of phase-change material (PCM) incorporation on the occurring heat transfer. Multilayer textile assemblies with PCM inserts (macrocapsules containing n-octadecane) and reference assemblies with PP inserts (macrogranules from polypropylene) with very similar geometry and the same textile layers were tested. The spatial geometry of tested assemblies was examined using high-resolution X-ray microtomography (micro-CT). The heating process of the assemblies was examined under the conditions of exposure to contact heat (using thermography) and radiant heat (using a copper plate calorimeter, according to EN ISO 6942). PCM-containing assemblies achieved a temperature rise of 12 °C in a longer period than the reference assemblies; for the contact heat method, the time was longer by 11 and 14 min, and for the radiant heat method by 1.7 and 2.1 min. Full article
(This article belongs to the Special Issue Phase Change Materials: Design and Applications—Volume II)
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19 pages, 4893 KiB  
Article
Heavy-Duty Use and Charging of Power Tool Battery Packs: A Simulation-Based Study to Improve Cooling Strategies
by Veit Königer and Volker Knoblauch
Appl. Sci. 2023, 13(15), 8848; https://doi.org/10.3390/app13158848 - 31 Jul 2023
Viewed by 1358
Abstract
In the fast-growing but also highly competitive market of battery-powered power tools, cell-pack-cooling systems are of high importance, as they guarantee safety and short charging times. A simulation model of an 18 V power tool battery pack was developed to be able to [...] Read more.
In the fast-growing but also highly competitive market of battery-powered power tools, cell-pack-cooling systems are of high importance, as they guarantee safety and short charging times. A simulation model of an 18 V power tool battery pack was developed to be able to evaluate four different pack-cooling systems (two heat-conductive polymers, one phase change material, and non-convective air as reference) in an application scenario of practical relevance (the intensive use of a power tool followed by cooling down and charging steps). The simulation comprises battery models of 21700 cells that are commercially available as well as heat transfer models. The study highlights the performance of the different cooling materials and their effect on the maximum pack temperature and total charging cycle time. Key material parameters and their influence on the battery pack temperature and temperature homogeneity are discussed. Using phase change materials and heat-conductive polymers, a significantly lower maximum temperature during discharge (up to 26%) and a high shortening potential of the use/charging cycle (up to 32%) were shown. In addition to the cooling material sweep, a parameter sweep was performed, varying the external temperature and air movement. The high importance of the conditions of use on the cooling system’s performance was illustrated. Full article
(This article belongs to the Special Issue Phase Change Materials: Design and Applications—Volume II)
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19 pages, 1588 KiB  
Article
Review and Analysis of Existing Approaches to Investigate Property Degradation of Phase Change Materials and Development of a New Systematic Approach
by Harald Mehling
Appl. Sci. 2023, 13(15), 8682; https://doi.org/10.3390/app13158682 - 27 Jul 2023
Cited by 2 | Viewed by 1019
Abstract
With increasing commercial success of PCM, the long-term development of properties becomes more important. It has been investigated already for decades in a variety of ways and a wide range of testing conditions. Previous reviews concluded that further work toward standardization of testing [...] Read more.
With increasing commercial success of PCM, the long-term development of properties becomes more important. It has been investigated already for decades in a variety of ways and a wide range of testing conditions. Previous reviews concluded that further work toward standardization of testing is needed. In a desktop study, the current approach to testing was analyzed. It is shown that standardization should not mean to always test with the same methods using the same conditions, e.g., as different applications impose different conditions. Instead, testing should be tailored to the individual case. For this, a new, systematic approach was developed. It identifies first the basic functions and related properties that might be subject to testing, e.g., with a specific application in mind, and then gives an approach to find the degradation effects and underlying mechanisms to allow tailoring and optimizing test procedures. As an example, the approach is applied to the function of heat storage. Here, a new degradation effect was identified, and for degradation by phase separation, it is shown by an example that it could even be reversed at suitable conditions. Therefore, tailoring testing conditions to the individual case is needed. Deeper knowledge of degradation mechanisms is required, so further R&D is suggested. Full article
(This article belongs to the Special Issue Phase Change Materials: Design and Applications—Volume II)
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