Phase change materials for energy storage nucleation to prevent supercooling

Lane, G.A.

doi:10.1016/0927-0248(92)90116-7

Cited by 142 publications

(79 citation statements)

References 5 publications

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“…Brandstetter [83] also obtained CaCl 2 $6H 2 O cycle stability using water excess principle and SrCl 2 as additive. The cycle stability does not only depend on the additive but also on the amount of the additive added to CaCl 2 , as shown by the results reported by Lane [78].…”

Section: Incongruent Melting E Phase Segregationsupporting

confidence: 62%

“…Lane and Rossow [77] [78] have shown nucleation induction and decreasing supercooling of calcium chloride. Generally, the use of nucleating agents reduces the energy storage density of the PCM or increases the material cost.…”

Section: Supercooling or Undercoolingmentioning

confidence: 99%

“…Generally, the use of nucleating agents reduces the energy storage density of the PCM or increases the material cost. Furthermore, other technical difficulties may arise during cycling and the additive may become ineffective after some cycles [73,78]. For instance, the use of [53,54] 187 [18,27] 191e212 [51,52] 209 [48,49] 213.12 [50] 163 [48,49] 88 [48,49] 134 [48,49] 257 [48,49] Energy …”

Section: Supercooling or Undercoolingmentioning

confidence: 99%

See 2 more Smart Citations

A review on the use of calcium chloride in applied thermal engineering

N’Tsoukpoe¹,

Rammelberg²,

Fopah-Lele³

et al. 2015

Applied Thermal Engineering

106

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Section: Incongruent Melting E Phase Segregationsupporting

confidence: 62%

Section: Supercooling or Undercoolingmentioning

confidence: 99%

Section: Supercooling or Undercoolingmentioning

confidence: 99%

See 1 more Smart Citation

A review on the use of calcium chloride in applied thermal engineering

N’Tsoukpoe¹,

Rammelberg²,

Fopah-Lele³

et al. 2015

Applied Thermal Engineering

106

View full text Add to dashboard Cite

“…After prolonged use, most of salt hydrates tend to supercool before freezing during the extraction of stored heat [42]. This causes a drop in the efficiency of the material, and will eventually lead to heat recovery not taking place at all in the PCM.…”

Section: Super Cooling Effectsmentioning

confidence: 99%

“…Supercooling is defined as the state where a liquid solidifies below its normal freezing point [40], and hence experiences a delay in starting its solidification process [41]. After prolonged use, most of salt hydrates tend to supercool before freezing during the extraction of stored heat [42]. This causes a drop in the efficiency of the material, and will eventually lead to heat recovery not taking place at all in the PCM.…”

Section: Super Cooling Effectsmentioning

confidence: 99%

PCMs for Residential Building Applications: A Short Review Focused on Disadvantages and Proposals for Future Development

et al. 2017

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Phase change materials (PCMs) offer great potential as a latent heat energy storage technique to provide energy efficient systems in new and existing residential buildings. Due to their unique characteristic of high storage densities and latent heat properties, PCMs provide opportunities for greater energy storage in many applications for residential buildings. These applications include, but are not limited to, solar water heating, space heating/cooling, and waste heat recovery. This study reviews PCM systems in residential building applications, with a focus on their major disadvantages and concludes with proposals for future development. Several disadvantages of PCM use in the given application have been identified and include; super cooling, low thermal conductivity, phase segregation, fire safety, and cost. The issues caused by super cooling and phase segregation lead to thermal cycling degradation, limiting the useful lifecycle of the material. These issues could limit their potential in building applications, which require systems of a long lifespan. Low thermal conductivities can slow down the rate at which heat is distributed or absorbed from the building, which affect the occupants comfort and as well as the efficiency of the system. Ideas based on the current research on ways to limit these disadvantages are included in the study. This study also identifies that further research is required on novel maintenance ways for the PCM systems after they have been installed.

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Optically Triggered Synchronous Heat Release of Phase‐Change Enthalpy and Photo‐Thermal Energy in Phase‐Change Materials at Low Temperatures

Líu

Tang

Dong

et al. 2020

Adv Funct Materials

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Phase‐change materials (PCMs) are used in several energy recycling utilization systems due to their latent‐heat‐storage and ‐release ability. However, the inability of PCMs to release heat at temperatures below their freezing point limits their application in distributed energy utilization systems. This paper reports optically‐triggered low‐temperature heat release in PCMs based on a solid–liquid phase change (PC) controlled by the trans–cis (E–Z) photo‐isomerization of azobenzene. To achieve this, a photo‐responsive alkyl‐grafted Azo is incorporated into tetradecane (Ted) to create a photo‐sensitive energy barrier for the PC. The Azo/Ted composite exhibits controllable supercooling (4.04–8.80 °C) for heat storage and achieves synchronous heat release of PC enthalpy and photo‐thermal energy. In addition, the Azo reduces the crystallization of Ted by intercalating into its molecular alignment. Furthermore, under light illumination, the Azo/Ted composite releases considerable heat (207.5 J g−1) at relatively low temperatures (−1.96 to −6.71 °C). The temperature of the annular device fabricated for energy utilization increases by 4 °C in a low‐temperature environment (−5 °C). This study will pave the way for the design of advanced distributed energy systems that operate by controlling the energy storage/release of PCMs over a wide range of temperatures.

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Phase change materials for energy storage nucleation to prevent supercooling

Cited by 142 publications

References 5 publications

A review on the use of calcium chloride in applied thermal engineering

A review on the use of calcium chloride in applied thermal engineering

PCMs for Residential Building Applications: A Short Review Focused on Disadvantages and Proposals for Future Development

Optically Triggered Synchronous Heat Release of Phase‐Change Enthalpy and Photo‐Thermal Energy in Phase‐Change Materials at Low Temperatures

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