Characterization of supercooling suppression of microencapsulated phase change material by using DSC

Alvarado, Jorge L.; Marsh, Charles; Sohn, Chang Hyun; Vilceus, M.; Hock, Vincent F.; Phetteplace, Gary; Newell, T.A.

doi:10.1007/s10973-005-7430-0

Cited by 73 publications

(22 citation statements)

References 22 publications

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“…Instead of taking temperature difference between two maximums, DT is defined as the difference between the highest temperature in melting peak and the lowest temperature in solidifying peak. The super-cooling of microsized particles of phase change materials can be reduced by adding nucleating agent to reduce nucleation barrier [3][4][5][6][7][8] or controlling working conditions such as degree of over-heating and cooling rates [9,10]. However there is no effective way to reduce super-cooling of metallic nanoparticles, which cannot be doped readily with non-molten impurities due to small size and lack of material with matching structure.…”

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confidence: 99%

Controlling supercooling of encapsulated phase change nanoparticles for enhanced heat transfer

Yan

et al. 2011

Chemical Physics Letters

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mentioning

confidence: 99%

Controlling supercooling of encapsulated phase change nanoparticles for enhanced heat transfer

Yan

et al. 2011

Chemical Physics Letters

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“…where k b is static thermal conductivity of MPCM suspension, k p is thermal conductivity of MPCM particle, 22 and Wang et al 23,24 Urea-formaldehyde (UF) 1490 1675 0.433 --Zhang et al, 19 Zhang and Niu, 25 and Alvarado et al 26 Polymethyl methacrylate (PMMA) 1190 1470 0.21 -210 Table 2. Thermal conductivity of deionized water.…”

Section: Resultsmentioning

confidence: 99%

The role of contact angle in the thermal conductivity of microencapsulated phase change material suspensions

Qiu

Le²,

et al. 2017

Advances in Mechanical Engineering

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The purpose of this article is to investigate the effect of the wettability on the thermal conductivity of microencapsulated phase change material suspensions. The wettability of the capsules, characterized by contact angle between solid capsules and carrier fluid, was modified by mixing two selected surfactants into the suspensions, that is, cetyltrimethylammonium bromide and sodium dodecyl sulfate, and changing such surfactants' additive amount. Meanwhile, the static thermal conductivity of the microencapsulated phase change material suspensions was measured. The results indicated the effect of the cetyltrimethylammonium bromide is more significant than the sodium dodecyl sulfate when the mass fraction of surfactants falls into the range of 0-0.05 wt%. However, when the mass fraction of surfactants continues to increase from 0.05 wt%, the significance of the sodium dodecyl sulfate exceeded the cetyltrimethylammonium bromide. It was also found that the decrease in the contact angle led to the growth in thermal conductivity for Maxwell model and tested results. When the contact angle fell into the range of 45°-95°, the Maxwell model could predict the thermal conductivity with a good accuracy, but inversely, when the contact angles were smaller than 45°, a significant gap was found between the two results. To remove such gap a correction factor ''A'' which is associated with contact angles was proposed.

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“…When a PCM's temperature increases above the melting point, the PCM absorbs and stores heat as thermal energy as it melts. When the PCM's temperature increases beyond the specified temperature range, the PCM is powered off and cools to below the melting point, releasing its stored energy and returning to a solid state [4][5][6][7][8].…”

Section: Pcm's Applicationmentioning

confidence: 99%

“…In this way, heat stress is prevented. PCMs in clothing allow the clothing to act as a mediator between the body and the environment, protecting people in hazardous conditions [1][2][3][4][5][6].…”

Section: Pcm's Applicationmentioning

confidence: 99%

Phase Change Materials’ Application in Clothing Design

Lin

2012

Trans. Mat. Res. Soc. Japan

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Heat (energy released) and cool (energy absorbed) are two types of PCMs that have been developed and adopted in clothing and textiles design. Many special function and smart textiles have adopted this concept such as: ski wear, diver dry suits, underwear, socks, hats, masks, gloves, shoes, firefighters' gear, bedding like sheets and pillowcases, and medical clothing. This paper discusses current PCM applications in clothing and explores future usage.

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Characterization of supercooling suppression of microencapsulated phase change material by using DSC

Cited by 73 publications

References 22 publications

Controlling supercooling of encapsulated phase change nanoparticles for enhanced heat transfer

Controlling supercooling of encapsulated phase change nanoparticles for enhanced heat transfer

The role of contact angle in the thermal conductivity of microencapsulated phase change material suspensions

Phase Change Materials’ Application in Clothing Design

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