Assessment of Novel Inorganic Storage Medium with Low Melting Point

Pfleger, Nicole; Braun, Markus; Eck, Markus; Bauer, Thomas

doi:10.1016/j.egypro.2015.03.186

Cited by 9 publications

(3 citation statements)

References 14 publications

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“…By calculating the DSC phase change area which is divided by the phase change DSC curve and the onset/end baseline, it is concluded that the phase change enthalpies of the three samples are 127.2, 118.6, and 82.56 J/g, respectively. Compared with similar studies [9], this material has an edge in storage ability. Table 4 shows the melting latent heat change of the three samples with different additions of the thickener.…”

Section: Resultsmentioning

confidence: 86%

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Preparation and Thermal Properties of Eutectic Hydrate Salt Phase Change Thermal Energy Storage Material

Liang

Chen

2018

International Journal of Photoenergy

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In this study, a new cold storage phase change material eutectic hydrate salt (K2HPO4·3H2O–NaH2PO4·2H2O–Na2S2O3·5H2O) was prepared, modified, and tested. The modification was performed by adding a nucleating agent and thickener. The physical properties such as viscosity, surface tension, cold storage characteristics, supercooling, and the stability during freeze-thaw cycles were studied. Results show that the use of nucleating agents, such as sodium tetraborate, sodium fluoride, and nanoparticles, are effective. The solidification temperature and latent heat of these materials which was added with 0, 3, and 5 wt% thickeners were −11.9, −10.6, and −14.8°C and 127.2, 118.6, 82.56 J/g, respectively. Adding a nucleating agent can effectively improve the nucleation rate and nucleation stability. Furthermore, increasing viscosity has a positive impact on the solidification rate, supercooling, and the stability during freeze-thaw cycles.

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Section: Resultsmentioning

confidence: 86%

“…Salt hydrates [8] as an inorganic PCM have an advantage in higher heat storage capacity, suitable cold storage temperature [9], nonflammable, and so on. Thus, it would be more suitable and safer than organic PCM in energy storage application especially cryogenic storage.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Thermal Properties of Eutectic Hydrate Salt Phase Change Thermal Energy Storage Material

Liang

Chen

2018

International Journal of Photoenergy

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“…As for Ca(NO 3 ) 2 in the previous section, density values of Ca(NO 2 ) 2 and Li(NO 2 ) 2 are commonly not available. In a previous work, the minimum melting composition LiNO 3 -Ca(NO 3 ) 2 -NaNO 2 -KNO 2 (24.6 -13.6 -16.8 -45.0 wt%) was identified[46]. CaLiNaK-NO23 is the abbreviation of this mixture.…”

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confidence: 96%

Semi-empirical Density Estimations for Binary, Ternary and Multicomponent Alkali Nitrate–Nitrite Molten Salt Mixtures

Bauer

Bonk

2018

Int J Thermophys

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For sensible thermal energy storage in Concentrating Solar Power (CSP) plants, a molten salt mixture of 60 wt% sodium nitrate (NaNO 3) and 40 wt% potassium nitrate (KNO 3), known as Solar Salt, is commonly utilized. The paper presents semi-empirical estimation results of the density of Solar Salt and alternative molten salt mixtures with low melting temperatures in a range from 70 °C to 140 °C. These mixtures are Hitec, HitecXL, LiNO 3-KNO 3-NaNO 3 and a multi-component mixture. The paper shows that density values of mixtures can be closely predicted from single salt densities. The paper examines different estimation rules for mixtures. The quasilinear volumetric additivity rule (QVAR) is known for ternary reciprocal systems. For the first time, the presented work extends the QVAR to multicomponent mixtures. Temperature dependent densities of selected salt mixtures of the system Ca,Li,K,Na//NO 2 ,NO 3 were estimated. Estimations are motivated by a fast and reliable method compared to time-consuming and error-prone measurements of several mixtures.

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Homogeneous molten salt formulations as thermal energy storage media and heat transfer fluid

Naresh

Rajasekhar

Bharali

et al. 2022

Journal of Energy Storage

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Assessment of Novel Inorganic Storage Medium with Low Melting Point

Cited by 9 publications

References 14 publications

Preparation and Thermal Properties of Eutectic Hydrate Salt Phase Change Thermal Energy Storage Material

Preparation and Thermal Properties of Eutectic Hydrate Salt Phase Change Thermal Energy Storage Material

Semi-empirical Density Estimations for Binary, Ternary and Multicomponent Alkali Nitrate–Nitrite Molten Salt Mixtures

Homogeneous molten salt formulations as thermal energy storage media and heat transfer fluid

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