Thermal characteristics of magnesium nitrate hexahydrate and magnesium chloride hexahydrate mixture as a phase change material for effective utilization of urban waste heat

Nagano, Katsunori; Ogawa, Kiyoshi; Mochida, Tohru; Hayashi, Kanetoshi; Ogoshi, Hajime

doi:10.1016/j.applthermaleng.2003.09.003

Cited by 90 publications

(26 citation statements)

References 8 publications

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“…In other words, the nanoparticle size could be regulated by changing the reaction temperature in order to vary the viscosity of continuous phase. Knowledge of the phase change behavior of these low-melting metallic nanoparticles is critical for their applications such as thermal fluids, energy storage and electronics packaging [6,12,13,[25][26][27][28]. In this experiment, the melting-freezing phase transition of the as-prepared Field's metal and Indium nanoparticles was measured using a Differential Scanning Calorimeter (DSC, Model TA-Q100).…”

Section: Resultsmentioning

confidence: 99%

Synthesis of low-melting-point metallic nanoparticles with an ultrasonic nanoemulsion method

Han

Yang

et al. 2011

Ultrasonics

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Section: Resultsmentioning

confidence: 99%

Synthesis of low-melting-point metallic nanoparticles with an ultrasonic nanoemulsion method

Han

Yang

et al. 2011

Ultrasonics

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“…Magnesium nitrate hexahydrate shows solid-solid phase transition at around 72 °C with enthalpy change of ∆ trs H = 3.1 kJ mol -1 [12,13], and melts at about 90 °C with enthalpy of fusion varied from 38.5 to 42.8 kJ mol -1 [1,3,5,6,8,[12][13][14][15][16]. All data available in literature are summarized with our results (described later).…”

Section: Introductionmentioning

confidence: 90%

Calorimetric study of calcium nitrate tetrahydrate and magnesium nitrate hexahydrate

Sádovská

Honcová

Pilař

et al. 2015

J Therm Anal Calorim

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The heat capacity and enthalpy of fusion of calcium nitrate tetrahydrate, and magnesium nitrate hexahydrate were determined from 234.15 K to melting temperature with point of view of energy storage. Determined values were used for the calculation of entropy and Gibbs energy in the experimental temperature range. Melting point and enthalpy of fusion of calcium nitrate tetrahydrate is 43.9 ± 0.3 °C and 36.6 ± 0.2 kJ mol One solid-solid phase transformation was observed for the magnesium salt at 72.5 ± 0.9 °C with enthalpy of transition 3.1 ± 0.2 kJ mol -1 . The accumulated energy composed of sensible and latent heat is 43.4 and 63.8 kJ mol -1 for the hydrated calcium and magnesium nitrate, respectively. The kinetics of solid-solid phase transformation for magnesium salt was studied under non-isothermal conditions by DSC and the process was described using autocatalytical model with parameters in the range of 0.50 -0.85 for m and range of 2.58 -1.48 for n, respectively.

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“…Among organic PCMs there are fatty acids like carpic acid (655 mol%) + lauric acid (35 mol%) (Dimaano and Watanabe 2002), lauric acid (62.6 wt%) + myristic acid (37.4 wt%) (Kauranen et al 1991), and myristic acid (64.0 wt%) + stearic acid (36.0 wt%) (Sarı 2005). Among inorganic PCMs salt hydrates, manganese nitrate hexahydrate (Nagano et al 2003), and magnesium nitrate hexahydrate (Nagano et al 2004) are usually used. However, as there is no standard PCM and the technology is very new, PCMs should not be used in the proposed still.…”

Section: Phase Change Materials (Pcm)mentioning

confidence: 99%

A review of optimum parameter values of a passive solar still and a design for southern Bangladesh

et al. 2017

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Pure and fresh water is being scarce day by day. Although Bangladesh is a riverine country, pure drinking potable water is not a cheap commodity. Most of the people in the cities boil water to drink, and people of the villages take tube-well's water directly, which might have high amount of heavy metal like arsenic. Solar still is a cheap and very useful renewable technology, which can be used in Bangladesh extensively everywhere at the rooftop as a pure water source. Objective of this paper was to find a low cost portable and easily maintainable passive solar still for southern part of Bangladesh. All the parameters of passive solar still are studied, and it is found that an inclined stepped solar still with passive condenser, internal and external reflectors, black cotton wick, and with optimum design values can be the desired still, which would give maximum yield. Finally, the optimum values of the parameters are used to propose a cheap design.

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Thermal characteristics of magnesium nitrate hexahydrate and magnesium chloride hexahydrate mixture as a phase change material for effective utilization of urban waste heat

Cited by 90 publications

References 8 publications

Synthesis of low-melting-point metallic nanoparticles with an ultrasonic nanoemulsion method

Synthesis of low-melting-point metallic nanoparticles with an ultrasonic nanoemulsion method

Calorimetric study of calcium nitrate tetrahydrate and magnesium nitrate hexahydrate

A review of optimum parameter values of a passive solar still and a design for southern Bangladesh

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