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Photothermal conversion of biodegradable fluids and carbon black nanofluids

The paper is devoted to the topic of direct absorption solar collectors (DASCs). Various kinds of fluids can be used as heat transfer fluid in DASCs, and the main focus of our paper is on comparing nanofluids (water with carbon black nanoparticles, concentrations between 0.25 and 1.00% weight) and b...

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Autores principales: Kosinska, Anna, Balakin, Boris V., Kosinski, Pawel
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8888712/
https://www.ncbi.nlm.nih.gov/pubmed/35233065
http://dx.doi.org/10.1038/s41598-022-07469-w
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author Kosinska, Anna
Balakin, Boris V.
Kosinski, Pawel
author_facet Kosinska, Anna
Balakin, Boris V.
Kosinski, Pawel
author_sort Kosinska, Anna
collection PubMed
description The paper is devoted to the topic of direct absorption solar collectors (DASCs). Various kinds of fluids can be used as heat transfer fluid in DASCs, and the main focus of our paper is on comparing nanofluids (water with carbon black nanoparticles, concentrations between 0.25 and 1.00% weight) and biodegradable coffee colloids. At first, these fluids were tested by exposing them to irradiation caused by artificial light in indoor experiments, and the corresponding temperature increase was recorded. The fluids were placed in a beaker with a relatively large size so that most of the fluid was not directly irradiated. In these experiments, the performance of the two studied fluids was similar: the resulting temperature increase varied between 46 and 50 °C. Our next experiments involved a smaller system subjected to irradiation obtained by using a solar collector. As a result, we detected an intense absorption on the nanoparticle surface so that the temperature rise in the nanofluid was higher than in the coffee colloids. Next, the process was analysed using a theoretical analysis that gave good correspondence with the experiments. Finally, we extended the theoretical analysis to a DASC with a flowing fluid. The model was validated against results from the literature, but it also supported our experimental findings.
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spelling pubmed-88887122022-03-03 Photothermal conversion of biodegradable fluids and carbon black nanofluids Kosinska, Anna Balakin, Boris V. Kosinski, Pawel Sci Rep Article The paper is devoted to the topic of direct absorption solar collectors (DASCs). Various kinds of fluids can be used as heat transfer fluid in DASCs, and the main focus of our paper is on comparing nanofluids (water with carbon black nanoparticles, concentrations between 0.25 and 1.00% weight) and biodegradable coffee colloids. At first, these fluids were tested by exposing them to irradiation caused by artificial light in indoor experiments, and the corresponding temperature increase was recorded. The fluids were placed in a beaker with a relatively large size so that most of the fluid was not directly irradiated. In these experiments, the performance of the two studied fluids was similar: the resulting temperature increase varied between 46 and 50 °C. Our next experiments involved a smaller system subjected to irradiation obtained by using a solar collector. As a result, we detected an intense absorption on the nanoparticle surface so that the temperature rise in the nanofluid was higher than in the coffee colloids. Next, the process was analysed using a theoretical analysis that gave good correspondence with the experiments. Finally, we extended the theoretical analysis to a DASC with a flowing fluid. The model was validated against results from the literature, but it also supported our experimental findings. Nature Publishing Group UK 2022-03-01 /pmc/articles/PMC8888712/ /pubmed/35233065 http://dx.doi.org/10.1038/s41598-022-07469-w Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Kosinska, Anna
Balakin, Boris V.
Kosinski, Pawel
Photothermal conversion of biodegradable fluids and carbon black nanofluids
title Photothermal conversion of biodegradable fluids and carbon black nanofluids
title_full Photothermal conversion of biodegradable fluids and carbon black nanofluids
title_fullStr Photothermal conversion of biodegradable fluids and carbon black nanofluids
title_full_unstemmed Photothermal conversion of biodegradable fluids and carbon black nanofluids
title_short Photothermal conversion of biodegradable fluids and carbon black nanofluids
title_sort photothermal conversion of biodegradable fluids and carbon black nanofluids
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8888712/
https://www.ncbi.nlm.nih.gov/pubmed/35233065
http://dx.doi.org/10.1038/s41598-022-07469-w
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