Thermal Stability Test of Sugar Alcohols as Phase Change Materials for Medium Temperature Energy Storage Application

Solé, Aran; Neumann, Hannah; Niedermaier, Sophia; Cabeza, Luisa F.; Palomo, Elena

doi:10.1016/j.egypro.2014.02.051

Cited by 36 publications

(9 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The only PCMs measured above 100 °C show substantially higher enthalpy, with values around 350 J g −1 . Both of them are sugar alcohols which are known to have higher enthalpy values than other PCM, but are only available with melting points around 100°C and above [ 52 , 53 , 54 ]. These properties correspond well with what is reported in literature for PCM classes [ 55 ].…”

Section: Resultsmentioning

confidence: 99%

Consistent DSC and TGA Methodology as Basis for the Measurement and Comparison of Thermo-Physical Properties of Phase Change Materials

et al. 2020

View full text Add to dashboard Cite

Measuring thermo-physical properties of phase change materials (PCM) in a consistent and reliable manner is essential for system layout of thermal energy storages and correspondingly material selection. Only if basic properties are assessed in a comparable way a selection process leads to the top candidate for any given application and thus enhances market penetration of renewable energy sources coupled with thermal energy storage. In this study, we focus on differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) as basic assessment techniques and develop consistent measurement procedures to create a database with comparable results. We show consistency of the measured results through analysis of coefficient of variation (CV), being in the mean 1.69%, 0.05%, 0.06% and 4.00% for enthalpy, melting onset, melting peak and maximum operating temperature, respectively. Overall, 23 PCM have been measured with the presented methodology, which was mainly possible due to the reduced measurement and preparation time per PCM compared to standard techniques, while achieving similar accuracy and precision.

show abstract

Section: Resultsmentioning

confidence: 99%

Consistent DSC and TGA Methodology as Basis for the Measurement and Comparison of Thermo-Physical Properties of Phase Change Materials

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The variation of solidification and melting enthalpies after 100 thermal cycles ranged from a gain of 0.99% to a loss of 2.94% (see Table 3). Losses below 20% after thermal cycling indicate that the material shows good thermal cycling stability [49]. Moreover, octyl DHSE showed the highest latent heat after 100 heating/cooling cycles: 230.05 kJ•kg -1 (fusion enthalpy), 228.69 kJ•kg -1 (solidification enthalpy).…”

Section: Thermal Properties and Cycling Reliability Of The Dhses Frommentioning

confidence: 99%

Combining biocatalysts to achieve new phase change materials. Application to non-edible animal fat

Gallart-Sirvent

Martín

Solé

et al. 2018

Molecular Catalysis

Self Cite

View full text Add to dashboard Cite

The thermal properties of various alkyl threo-9, 10-dihydroxystearates (DHSEs) prepared from non-edible fat were studied. Non-edible animal fat was hydrolyzed in a 93% yield with R. oryzae resting cells. Crude unsaturated fatty acids were recovered from the matter liquor resulting from a crystallization performed to achieve the saturated fatty acids. These unsaturated free fatty acids were epoxidized with 30% H 2 O 2 using immobilized Candida antarctica Lipase-B *Manuscript Click here to view linked References (CAL-B) as biocatalyst. The epoxy ring was cleaved with hot water in the presence of tertbutanol (t-BuOH). Pure threo-9, 10-dihydroxystearic acid (DHSA) from animal fat was recovered by crystallization (51% yield). Subsequently, DHSA was esterified in -limonene using biocatalysts yielding twelve DHSEs (58-90% yield). Differential scanning calorimetry (DSC) analysis of these esters revealed potential latent heats ranging from 136.83 kJ•kg-1 to 234.22 kJ•kg-1 and melting temperatures from 52.45 ºC to 76.88 ºC. Finally, the compounds with enthalpies above 200 kJ•kg-1 were subjected to 100 and 1000 thermal cycles. These experiments showed that these products present good thermal reliability.

show abstract

“…54 [74], Sharma et al [242], Silakhori et al [243], Solé et al [244], Shukla et al [245]. For example, thermal cycling tests were performed to assess the stability of some chosen organic and inorganic PCMs by Shukla et al [245].…”

Section: Stability Of Pcmsmentioning

confidence: 99%

Critical review of latent heat storage systems for free cooling in buildings

Zeinelabdein

Omer

Gan

2018

Renewable and Sustainable Energy Reviews

179

View full text Add to dashboard Cite

Buildings have a major contribution to the global energy consumption. Heating, ventilating and air conditioning systems (HVAC) are responsible for most of the energy use in buildings. Thus, clean and sustainable alternatives such as free cooling of buildings have recently gained much attention as means to reduce the operation hours and capacity of the conventional cooling and heating systems. The free cooling could be provided by collecting the natural cold energy during night time in appropriate thermal storage form and this could be retrieved when needed. Phase change materials are exploited by a number of investigators as a storage medium in free cooling applications, as these substances possess high energy densities, and absorb and release heat at a narrow temperature range, hence, the comfort temperature can be maintained day and night. The objectives of this article are to provide a comprehensive review on recent development on free cooling technologies incorporating latent heat storage and to shit lights on the most significant parameters affecting the performance of these materials in free cooling strategy. The outcomes of this review would be helpful in providing clear insight information on potential improvements that can be applied to the storage materials. All the reviewed studies demonstrated that the night cooling strategy using PCMs has the capacity to maintain the indoor temperature well within the comfort zone whilst providing a considerable reduction in cooling loads in all considered climates.

show abstract

Thermal Stability Test of Sugar Alcohols as Phase Change Materials for Medium Temperature Energy Storage Application

Cited by 36 publications

References 9 publications

Consistent DSC and TGA Methodology as Basis for the Measurement and Comparison of Thermo-Physical Properties of Phase Change Materials

Consistent DSC and TGA Methodology as Basis for the Measurement and Comparison of Thermo-Physical Properties of Phase Change Materials

Combining biocatalysts to achieve new phase change materials. Application to non-edible animal fat

Critical review of latent heat storage systems for free cooling in buildings

Contact Info

Product

Resources

About