Properties of n-Octadecane PCM Composite with Recycled Aluminum as a Thermal Enhancer.

Nicoleta Cobîrzan, Gyorgy Thalmaier, Crețu Mihaela, Mircea Năsui, Dan Doru Micu

Abstract read

In one paragraph

Article in Materials (Basel, Switzerland), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

5 authors.

Nicoleta CobîrzanFaculty of Civil Engineering, Buildings and Management Department, Technical University of Cluj-Napoca, 15 Constantin Daicoviciu Street, 400020 Cluj-Napoca, Romania.

Gyorgy ThalmaierInstitute of Nanomaterials and Nanotechnologies-EUTINN, European University of Technology, European Union, 28 Memorandumului Street, 400114 Cluj-Napoca, Romania.ORCID 0000-0003-2762-6110

Crețu MihaelaInstitute of Nanomaterials and Nanotechnologies-EUTINN, European University of Technology, European Union, 28 Memorandumului Street, 400114 Cluj-Napoca, Romania.

Mircea NăsuiInstitute of Nanomaterials and Nanotechnologies-EUTINN, European University of Technology, European Union, 28 Memorandumului Street, 400114 Cluj-Napoca, Romania.ORCID 0000-0002-4792-2032

Dan Doru MicuInstitute of Nanomaterials and Nanotechnologies-EUTINN, European University of Technology, European Union, 28 Memorandumului Street, 400114 Cluj-Napoca, Romania.ORCID 0000-0003-4921-7166

Funding

European Commission 101103450/01.06.2023

6 · The paper itself

Abstract

This paper presents new types of PCM composites proposed and analyzed for cooling applications in buildings. The composites (n-octadecane-Al-long/n-octadecane-Al-short) were made of n-octadecane with 7% and 7.5% vol. of recycled aluminum added as a thermal conductivity enhancer to avoid sinking during the melting phase and to improve thermal conductivity. Recycled aluminum chips are inexpensive, abundant, and generate a lower environmental impact during composite production. The effect of the chip content was found to increase the thermal conductivity values of the composites by 100% (n-octadecane-Al short) and by 600% (n-octadecane-Al-long) compared to n-octadecane. The percentage of mass increase remained low. The latent heat of n-octadecane-Al-long decreased from 245 kJ/kg to 195 kJ/kg, the melting time shortened from 990 s to 850 s, and the CO

Indexed as

passive coolingPCM compositephase-change kineticsrecycled aluminum chipsthermal conductivity enhancement

Identifiers

PMID41470410

DOI10.3390/ma18245638

PMCPMC12734469

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.