Heat protection by different phase change materials

Bühler, M.; Popa, Ana-Maria; Scherer, Lukas J.; Lehmeier, F.K.S.; Rossi, René M.

doi:10.1016/j.applthermaleng.2013.02.025

Cited by 40 publications

(26 citation statements)

References 18 publications

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“…To provide thermal comfort of PCM textiles, the PCM should be well selected with phase change temperatures in the range of 18–36 °C, such as n ‐nonadecane, n ‐heptadecane, n ‐eicosane, n ‐octadecane, etc. [ 76 ] To solve the leakage issue, various methods like coaxial electrospinning and microencapsulation have been explored.…”

Section: Advanced Strategiesmentioning

confidence: 99%

Emerging Materials and Strategies for Personal Thermal Management

Liu

Shin

et al. 2020

Advanced Energy Materials

376

242

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us warm in cold climates and shielded us from the nakedness for modesty and civilization. [1,2] Cloth is also a platform for artists, designers, and tailors to advance the clothing demands with emerging materials, process, and fashion. [2] While the majority of the functionalities of clothes lie in their physical attributes, such as their softness, breathability, air/ vapor permeability, and, of course the appearance, their role in thermal management is equally, if not more, important. The primary goal of clothing is to satisfy human being's basic needs in thermal comfort, by providing cooling in the hot environment or heating in the cold environment. [1] The energy management aspect of clothing is becoming an increasingly important and attractive aspect due to our increasing awareness to energy consumption and our persisting pursuit of comfort and health. The finite availability and the associated environmental consequence of fossil fuels have motivated us to save energy from virtually all aspects of our daily lives. A suitable thermal envelop is a necessity for our living and working. To create a comfortable indoor environment, the building heating, ventilation, and air conditioning (HVAC) systems are widely used for space cooling and heating at the expense of excessive energy consumption. [3][4][5][6] According to United States In this decade, the demands of energy saving and diverse personal thermoregulation requirements along with the emergence of wearable electronics and smart textiles give rise to the resurgence of personal thermal management (PTM) technologies. PTM, including personal cooling, heating, insulation, and thermoregulation, are far more flexible and extensive than the traditional air/liquid cooling garments for the human body. Concomitantly, many new advanced materials and strategies have emerged in this decade, promoting the thermoregulation performance and the wearing comfort of PTM simultaneously. In this review, an overview is presented of the state-ofthe-art and the prospects in this burgeoning field. The emerging materials and strategies of PTM are introduced, and classed by their thermal functions. The concept of infrared-transparent visible-opaque fabric (ITVOF) is first highlighted, as it triggers the work on advanced PTM by combining it with radiative cooling, and the corresponding implementations and realizations are subsequently introduced, followed by wearable heaters, flexible thermoelectric devices, and sweat-management Janus textiles. Finally, critical considerations on the challenges and opportunities of PTM are presented and future directions are identified, including thermally conductive polymers and fibers, physiological/psychological statistical analysis, and smart PTM strategies.

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Section: Advanced Strategiesmentioning

confidence: 99%

Emerging Materials and Strategies for Personal Thermal Management

Liu

Shin

et al. 2020

Advanced Energy Materials

376

242

View full text Add to dashboard Cite

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“…In one application, blister packs containing PCM were created which featured multiple cavities 10 mm in diameter and 4 mm deep sealed with foil. The material was then used to line protective clothing for workers exposed at regular intervals to the heat from industrial ovens [52]. Samples were made using four different PCMs in the blister packs and the gear was tested in exposure to a 1500 W/m 2 radiation heat flux at a distance of 50 cm.…”

Section: Textile Designsmentioning

confidence: 99%

Energy Storage Applications

Fleischer

2015

Thermal Energy Storage Using Phase Change Materials

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As discussed in Chap. 1, energy storage through solid-liquid phase change is inherently a transient process and is best suited for systems that experience repeated transients, such as on-off or periodic peaking cycles, or for those systems which require thermal energy storage for later use. PCMs are commonly used in applications for both thermal management and for thermal energy storage.Interest in PCMs for thermal management of systems can be traced back at least through the 1970s. NASA in particular was interested in the use of PCMs as what were then referred to as "thermal capacitors" and PCMs were implemented in several moon vehicles and in Skylab [1]. The 1977 NASA tech brief "A Design Handbook for Phase Change Thermal Control and Energy Storage Devices" [2] was one of the first comprehensive PCM references, and is still widely cited and used today.During the 1970s and 1980s, interest was also building in the application of PCMs in solar systems [3-5] for thermal energy storage in both large solar plants, and in smaller domestic applications such as domestic hot water systems. The concept of embedding PCMs in various types of building materials, such as wallboard and floorboards, in order to create houses and offices with lower heating and cooling loads for greater energy efficiency, also began in the 1970s/80s [6,7]. Simultaneously, a significant amount of fundamental research was being completed on PCMs, considering in-depth the melting and solidification processes, and the roles of conduction and natural convection on the phase change processes [8][9][10][11].With the growth of computing power through the 1980s and 1990s, integrated circuits began dissipating significant amounts of heat and PCM applications in the thermal management of high performance, military and consumer electronics came on the scene in the late 1990s [12][13][14]. More recently, PCMs have seen application in textile design for energy absorbing clothing for military and consumer products [15].

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“…(3) Phase change garments which use the latent heat storage materials (ice, dry ice, paraffin, hexadecane, etc.) for cooling the body . Unfortunately, these three kinds of personal cooling technologies were all high‐cost, complicated, and hardly applied in daily life.…”

Section: Introductionmentioning

confidence: 99%

A Novel Approach to Design Nanoporous Polyethylene/Polyester Composite Fabric via TIPS for Human Body Cooling

Liu

Wang

et al. 2018

Macro Materials & Eng

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In this study, in order to obtain a wearable infrared‐transparent material based on nanoporous polyethylene, a newly ultrahigh molecular weight polyethylene (UHMWPE)/polyester composite fabric with nanoporous structure is developed via thermally induced phase separation (TIPS) method. A polyester mesh with loose warp/weft weaves is chosen as the intermediate to enhance the fabric mechanical strength and air permeability. Meanwhile, methoxy‐poly(ethylene glycol)‐aminoethyl/polydopamine particles (mPPDAPs) are used to improve the hydrophilicity of UHMWPE. The fabric is composited with mPPDAPs/UHMWPE/liquid paraffin mixture at high temperature. Then the nanoporous structure is formed via TIPS in UHMWPE phase in the composite fabric. This newly UHMWPE/polyester composite fabric possesses a unique connective nanoporous structure with the pore sizes distributed from 50 to 100 nm and it also has many disconnected honeycomb pores that are ≈1000 nm in diameter. These characteristics endow the composite fabric with excellent properties of wearability and optical properties, including sufficient moisture wicking rate, air permeability, and mechanical strength, high infrared‐transparent and ultraviolet/visible‐opaque properties. It is an effective, economical, and practical novel composite textile for human body cooling.

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Heat protection by different phase change materials

Cited by 40 publications

References 18 publications

Emerging Materials and Strategies for Personal Thermal Management

Emerging Materials and Strategies for Personal Thermal Management

Energy Storage Applications

A Novel Approach to Design Nanoporous Polyethylene/Polyester Composite Fabric via TIPS for Human Body Cooling

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