Thermal Analysis of Organic and Nanoencapsulated Electrospun Phase Change Materials

Latent heat stored in phase change materials (PCM) can greatly improve energy efficiency in indoor heating/cooling applications. This study presents the materials and methods for the formation and characterization of a PCM layer for a latent heat thermal energy storage (LHTES) application. Four comm...

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Main Authors: Evdoxia Paroutoglou, Peter Fojan, Leonid Gurevich, Göran Hultmark, Alireza Afshari
Format: Article
Language:English
Published: MDPI AG 2021-02-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/14/4/995
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author Evdoxia Paroutoglou
Peter Fojan
Leonid Gurevich
Göran Hultmark
Alireza Afshari
author_facet Evdoxia Paroutoglou
Peter Fojan
Leonid Gurevich
Göran Hultmark
Alireza Afshari
author_sort Evdoxia Paroutoglou
collection DOAJ
description Latent heat stored in phase change materials (PCM) can greatly improve energy efficiency in indoor heating/cooling applications. This study presents the materials and methods for the formation and characterization of a PCM layer for a latent heat thermal energy storage (LHTES) application. Four commercially available PCMs comprising the classes of organic paraffins and organic non-paraffins were selected for thermal storage application. Pure organic PCM and PCM in water emulsions were experimentally investigated. PCM electrospun microfibers were produced by a co-axial electrospinning technique, where solutions of Polycaprolactone (PCL) 9% <i>w</i>/<i>v</i> and 12% <i>w</i>/<i>v</i> in dichloromethane (DCM) were used as the fiber shell materials. PCM emulsified with sodium dodecyl sulfate (SDS), and Polyvinylalcohol 10% <i>w</i>/<i>v</i> (PVA) constituted the core of the fibers. The thermal behavior of the PCM, PCM emulsions, and PCM electrospun fibers were analyzed with differential scanning calorimetry (DSC). A commercial organic paraffin with a phase change temperature of 18 °C (RT 18) in its pure and emulsified forms was found to be a suitable PCM candidate for LHTES. The PVA-PCM electrospun fiber matrix of the organic paraffin RT18 with a PCL concentration of 12% <i>w</i>/<i>v</i> showed the most promising results leading to an encapsulation efficiency of 67%.
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spelling doaj.art-20a1a8ea7b6840fe958051cad1f0aafe2023-12-11T17:03:20ZengMDPI AGEnergies1996-10732021-02-0114499510.3390/en14040995Thermal Analysis of Organic and Nanoencapsulated Electrospun Phase Change MaterialsEvdoxia Paroutoglou0Peter Fojan1Leonid Gurevich2Göran Hultmark3Alireza Afshari4Department of the Built Environment, Division of Sustainability, Energy and Indoor Environment, Aalborg University, 2450 København SV, DenmarkDepartment of Materials and Production, Aalborg University, 9220 Aalborg Ø, DenmarkDepartment of Materials and Production, Aalborg University, 9220 Aalborg Ø, DenmarkDepartment of the Built Environment, Division of Sustainability, Energy and Indoor Environment, Aalborg University, 2450 København SV, DenmarkDepartment of the Built Environment, Division of Sustainability, Energy and Indoor Environment, Aalborg University, 2450 København SV, DenmarkLatent heat stored in phase change materials (PCM) can greatly improve energy efficiency in indoor heating/cooling applications. This study presents the materials and methods for the formation and characterization of a PCM layer for a latent heat thermal energy storage (LHTES) application. Four commercially available PCMs comprising the classes of organic paraffins and organic non-paraffins were selected for thermal storage application. Pure organic PCM and PCM in water emulsions were experimentally investigated. PCM electrospun microfibers were produced by a co-axial electrospinning technique, where solutions of Polycaprolactone (PCL) 9% <i>w</i>/<i>v</i> and 12% <i>w</i>/<i>v</i> in dichloromethane (DCM) were used as the fiber shell materials. PCM emulsified with sodium dodecyl sulfate (SDS), and Polyvinylalcohol 10% <i>w</i>/<i>v</i> (PVA) constituted the core of the fibers. The thermal behavior of the PCM, PCM emulsions, and PCM electrospun fibers were analyzed with differential scanning calorimetry (DSC). A commercial organic paraffin with a phase change temperature of 18 °C (RT 18) in its pure and emulsified forms was found to be a suitable PCM candidate for LHTES. The PVA-PCM electrospun fiber matrix of the organic paraffin RT18 with a PCL concentration of 12% <i>w</i>/<i>v</i> showed the most promising results leading to an encapsulation efficiency of 67%.https://www.mdpi.com/1996-1073/14/4/995LHTESPCMelectrospun fiber matrixDSC
spellingShingle Evdoxia Paroutoglou
Peter Fojan
Leonid Gurevich
Göran Hultmark
Alireza Afshari
Thermal Analysis of Organic and Nanoencapsulated Electrospun Phase Change Materials
Energies
LHTES
PCM
electrospun fiber matrix
DSC
title Thermal Analysis of Organic and Nanoencapsulated Electrospun Phase Change Materials
title_full Thermal Analysis of Organic and Nanoencapsulated Electrospun Phase Change Materials
title_fullStr Thermal Analysis of Organic and Nanoencapsulated Electrospun Phase Change Materials
title_full_unstemmed Thermal Analysis of Organic and Nanoencapsulated Electrospun Phase Change Materials
title_short Thermal Analysis of Organic and Nanoencapsulated Electrospun Phase Change Materials
title_sort thermal analysis of organic and nanoencapsulated electrospun phase change materials
topic LHTES
PCM
electrospun fiber matrix
DSC
url https://www.mdpi.com/1996-1073/14/4/995
work_keys_str_mv AT evdoxiaparoutoglou thermalanalysisoforganicandnanoencapsulatedelectrospunphasechangematerials
AT peterfojan thermalanalysisoforganicandnanoencapsulatedelectrospunphasechangematerials
AT leonidgurevich thermalanalysisoforganicandnanoencapsulatedelectrospunphasechangematerials
AT goranhultmark thermalanalysisoforganicandnanoencapsulatedelectrospunphasechangematerials
AT alirezaafshari thermalanalysisoforganicandnanoencapsulatedelectrospunphasechangematerials