Thermal Analysis of Organic and Nanoencapsulated Electrospun Phase Change Materials

Evdoxia Paroutoglou, Peter Fojan, Leonid Gurevich, Göran Hultmark and Alireza Afshari
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Evdoxia Paroutoglou: Department of the Built Environment, Division of Sustainability, Energy and Indoor Environment, Aalborg University, 2450 København SV, Denmark
Peter Fojan: Department of Materials and Production, Aalborg University, 9220 Aalborg Ø, Denmark
Leonid Gurevich: Department of Materials and Production, Aalborg University, 9220 Aalborg Ø, Denmark
Göran Hultmark: Department of the Built Environment, Division of Sustainability, Energy and Indoor Environment, Aalborg University, 2450 København SV, Denmark
Alireza Afshari: Department of the Built Environment, Division of Sustainability, Energy and Indoor Environment, Aalborg University, 2450 København SV, Denmark

Energies, 2021, vol. 14, issue 4, 1-15

Abstract: 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% w / v and 12% w / v in dichloromethane (DCM) were used as the fiber shell materials. PCM emulsified with sodium dodecyl sulfate (SDS), and Polyvinylalcohol 10% w / v (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% w / v showed the most promising results leading to an encapsulation efficiency of 67%.

Keywords: LHTES; PCM; electrospun fiber matrix; DSC (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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