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Thermal Management of Serpentine Flexible Heater Based on the Orthotropic Heat Conduction Model
Flexible heaters can perfectly fit with undevelopable surfaces for heating in many practical applications such as thermotherapy, defogging/deicing systems and warming garments. Considering the requirement for stretchability in a flexible heater, certain spacing needs to be retained between serpentin...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9025186/ https://www.ncbi.nlm.nih.gov/pubmed/35457926 http://dx.doi.org/10.3390/mi13040622 |
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author | Zhao, Zhao Nan, Jin Li, Min |
author_facet | Zhao, Zhao Nan, Jin Li, Min |
author_sort | Zhao, Zhao |
collection | PubMed |
description | Flexible heaters can perfectly fit with undevelopable surfaces for heating in many practical applications such as thermotherapy, defogging/deicing systems and warming garments. Considering the requirement for stretchability in a flexible heater, certain spacing needs to be retained between serpentine heat sources for deformation which will inevitably bring critical challenges to the thermal uniformity. In order to reconcile these two conflicting aspects, a novel method is proposed by embedding the serpentine heat source in orthotropic layers to achieve comprehensive performance in stretchability and uniform heating. Such a scheme takes advantage of the ability of orthotropic material to control the heat flow distribution via orthotropic thermal conductivity. In this paper, an analytical heat conduction model with orthotropic substrate and encapsulation is calculated using Fourier cosine transform, which is validated by finite element analysis (FEA). Meanwhile, the effects of the orthotropic substrate or encapsulation with different ratios of thermal conductivity and the geometric spacing on the thermal properties are investigated, which can help guide the design and fabrication of flexible heaters to achieve the goal of uniform heating. |
format | Online Article Text |
id | pubmed-9025186 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-90251862022-04-23 Thermal Management of Serpentine Flexible Heater Based on the Orthotropic Heat Conduction Model Zhao, Zhao Nan, Jin Li, Min Micromachines (Basel) Article Flexible heaters can perfectly fit with undevelopable surfaces for heating in many practical applications such as thermotherapy, defogging/deicing systems and warming garments. Considering the requirement for stretchability in a flexible heater, certain spacing needs to be retained between serpentine heat sources for deformation which will inevitably bring critical challenges to the thermal uniformity. In order to reconcile these two conflicting aspects, a novel method is proposed by embedding the serpentine heat source in orthotropic layers to achieve comprehensive performance in stretchability and uniform heating. Such a scheme takes advantage of the ability of orthotropic material to control the heat flow distribution via orthotropic thermal conductivity. In this paper, an analytical heat conduction model with orthotropic substrate and encapsulation is calculated using Fourier cosine transform, which is validated by finite element analysis (FEA). Meanwhile, the effects of the orthotropic substrate or encapsulation with different ratios of thermal conductivity and the geometric spacing on the thermal properties are investigated, which can help guide the design and fabrication of flexible heaters to achieve the goal of uniform heating. MDPI 2022-04-15 /pmc/articles/PMC9025186/ /pubmed/35457926 http://dx.doi.org/10.3390/mi13040622 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Zhao, Zhao Nan, Jin Li, Min Thermal Management of Serpentine Flexible Heater Based on the Orthotropic Heat Conduction Model |
title | Thermal Management of Serpentine Flexible Heater Based on the Orthotropic Heat Conduction Model |
title_full | Thermal Management of Serpentine Flexible Heater Based on the Orthotropic Heat Conduction Model |
title_fullStr | Thermal Management of Serpentine Flexible Heater Based on the Orthotropic Heat Conduction Model |
title_full_unstemmed | Thermal Management of Serpentine Flexible Heater Based on the Orthotropic Heat Conduction Model |
title_short | Thermal Management of Serpentine Flexible Heater Based on the Orthotropic Heat Conduction Model |
title_sort | thermal management of serpentine flexible heater based on the orthotropic heat conduction model |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9025186/ https://www.ncbi.nlm.nih.gov/pubmed/35457926 http://dx.doi.org/10.3390/mi13040622 |
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