Development of thermo-regulating polypropylene fibre containing microencapsulated phase change materials

Iqbal, Kashif; Sun, Danmei

doi:10.1016/j.renene.2014.05.063

Cited by 90 publications

(40 citation statements)

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“…[98,104,123,[127][128][129][130][131][132] For incorporation of PCMs into textiles for enabling thermal comfort, microencapsulation is an important technique since it allows the PCMs to undergo a phase change from solid to liquid while being contained within a thin and resilient polymer shell (between 1 -30 µm in diameter). [104] PCMs have been incorporated into textiles most commonly in three different ways: (i) addition of microencapsulated PCMs into the fiber matrix to produce phase change fibers by various methods, such as (a) wet spinning to create alginate fiber containing microencapsulated n-octadecane (µoctadecane) PCM, [133] polyacrylonitrilevinylidene chloride (PAN/VDC) fibers with µoctadecane PCM, [134] and others, [135,136] (b) melt spinning to create core-sheath fibers with µoctadecane-PE composite core/PP sheath, [137] poly(butylene terephthalate) (PBT) fibers containing µoctadecane PCM, [138] PET/PEG copolymer that was melt spun into fibers, [139] and others, [140,141] and (c) electrospinning to create electrospun PCM containing fibers such as PET/fatty acids composite fibers, [142] core-sheath fibers with PCM octadecane core and a TiO2-Polyvinylpyrrolidone (PVP) sheath, [143] and polyethylene glycol (PEG)/cellulose acetate composite fibers, [144] and others, [145][146][147][148] (ii) coating textiles with microencapsulated PCMs, [106,[149][150][151][152] and (iii) incorporation of microencapsulated PCMs into foams which can subsequently be embedded into textile products. [153][154][155] Sanchez et al…”

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confidence: 99%

Smart Textile‐Based Personal Thermal Comfort Systems: Current Status and Potential Solutions

Tabor

Chatterjee

Ghosh

2020

Adv Materials Technologies

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Thermophysiological comfort in humans is sought universally but seldom achieved due to biological and physiological variances. Most people in developed parts of the world rely on central heating and cooling systems to achieve thermophysiological comfort which is highly energy-intensive, inefficient, and rarely satisfactory. A potential solution to this issue is a wearable personal thermal comfort system (PTCS) consisting of textile-based temperature and moisture sensors, that can sense the environment and physiology of the wearer, combined with thermal and moisture responsive actuators, and/or heating/cooling devices to provide an individualized thermal environment. Moving thermal regulation away from the built environment to the microclimate surrounding the human body with the use of textiles has the This article is protected by copyright. All rights reserved. 2 potential to provide personalized thermal comfort and energy savings. Such a system may employ thermal comfort models and leverage the Internet of Things (IoT) and machine learning (ML) to understand individuals' comfort requirements in the current environment. Herein, the current state of textile-based active and passive thermophysiological comfort systems/technologies is summarized, including their environmental impact, major thermal comfort models, and factors influencing comfort (such as heat and moisture transfer). Also, active and passive textile-based devices (sensors, actuators, and flexible heating/cooling devices) that may be incorporated into a textile-based wearable PTCS are comprehensively discussed with an emphasis on their advantages, limitations, and future prospects.

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confidence: 99%

Smart Textile‐Based Personal Thermal Comfort Systems: Current Status and Potential Solutions

Tabor

Chatterjee

Ghosh

2020

Adv Materials Technologies

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“…For 12% incorporation of MEPCM, the latent heat capacity for the polypropylene fibre was observed as 9.2 J/g. Predicted model and experimental results were well correlated for the thermo regulated fabric in terms of its latent heat, tenacity and modulus [56]. M.S.…”

Section: Smart Textilesmentioning

confidence: 78%

Review on Phase Change Materials with Nanoparticle in Engineering Applications

Kaviarasu¹,

Prakash²

2016

JESTR

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Phase change materials (PCMs) with their phenomenal phase changing behavior hold a key for many developments in renewable energy and engineering systems for sustainable future. PCM which can store and release heat energy over a temperature range has become an eminent candidate for many engineering applications that includes thermal, civil, electronics and textile. In modern days, Nano-PCMs have gained much attention of the engineers in utilizing them for thermal energy storage systems, for cooling microelectronic systems, for space heating or cooling in modern buildings and also in smart textiles for human comfort. Contribution of Nano-PCM based energy systems in energy savings and reduction of global gas emission is of interest now. This review provides an outlook of various types of PCM, choices of nanomaterial for incorporation and applications of nanomaterial incorporated PCMs. The most common types of PCM used are water, paraffin, hydrated salts and bio based PCM. Despite their high latent heat storage advantage, their low thermal property calls for the incorporation of nanomaterials. Nanomaterials with their high surface to volume ratio tune the thermal properties of the base PCM. Nanomaterials used for incorporation in PCM include Al, Cu, SiO2, TiO2, Carbon nanotubes (CNT), Carbon nanofibers (CNF), Al2O3, NaOH KOH etc.

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“…Finally, the use of phase-change materials (PCM) woven into the fabric for thermoregulation of textile material has also been attempted. 62,63 Use of PCM allows for control of heat flow by melting/solidifying, depending on the ambient temperature. One of the biggest challenges is the effective energy density (latent heat of fusion) of PCM woven into the textile, which is very low.…”

Section: Zonal Control Of Thermal Loadsmentioning

confidence: 99%

Theoretical Minimum Thermal Load in Buildings

Booten

Rao

Rapp

et al. 2021

Joule

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Building cooling and heating accounts for a large portion of total global energy use and requires commensurate amounts of resources, which contribute significantly to global warming.Traditionally, addressing this issue has meant improving the efficiency of equipment supplying the thermal energy, reducing envelope heat transfer, and reducing air infiltration. However, this approach is already reaching practical limits. In this perspective, we explore (1) theoretically how to reduce thermal load in buildings and (2) practically how to achieve that reduction and dramatically lower the energy required to support building loads. First, we discuss our framework developed for calculating the theoretical minimum thermal load (TMTL) in buildings. Our analysis shows that current thermal loads in buildings are more than an order-of-magnitude higher than the TMTL. We also introduce an approximate formula to calculate energy savings from zonal control of thermal load, which shows that the majority of zonal control benefits can be achieved with fewer than 10 zones. Then, we discuss pros and cons of various approaches and strategies to achieve the TMTL. We conclude our perspective with some longer-term R&D ideas such as thermally adaptive clothing and thermal storage to help approach the TMTL while providing the additional benefit of interacting with the renewable grid of the future. operated by Alliance for Sustainable Energy, LLC, for the U.S. Department of Energy (DOE) under Contract No. DE-AC36-08GO28308 and by Lawrence Berkeley National Laboratory under Contract No. DE-AC02-05CH11231 with the U.S. Department of Energy Building Technologies Office. The views expressed in the article do not necessarily represent the views of the DOE or the U.S. Government. The U.S. Government retains and the publisher, by accepting the article for publication, acknowledges that the U.S. Government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this work, or allow others to do so, for U.S. Government purposes This document was prepared as an account of work sponsored by the United States Government.

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Development of thermo-regulating polypropylene fibre containing microencapsulated phase change materials

Cited by 90 publications

References 10 publications

Smart Textile‐Based Personal Thermal Comfort Systems: Current Status and Potential Solutions

Smart Textile‐Based Personal Thermal Comfort Systems: Current Status and Potential Solutions

Review on Phase Change Materials with Nanoparticle in Engineering Applications

Theoretical Minimum Thermal Load in Buildings

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