The effect of thermal cyclic variation on the thermophysical property degradation of paraffin as a phase changing energy storage material

Vasu, Anusuiah; Hagos, Ftwi Yohaness; Mamat, Rizalman; Kaur, Jesbains

doi:10.1016/j.applthermaleng.2018.12.033

Cited by 49 publications

(18 citation statements)

References 34 publications

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“…When the pre‐sintering temperature reaches 200°C or more (as shown in Figure 3B–D), there is nearly no binder existing, and the average grain is refined, compared with Figure 3A. It can be refered to the reference Vasu et al., 19 which because binder of paraffin is disintegrated at the temperature of 164.3∼315.5°C. The grain refinement can also enhance the strength of green ceramics, and it is consistent with Figure 2A.…”

Section: Resultsmentioning

confidence: 88%

“…When the presintering temperature reaches 200 • C or more (as shown in Figure 3B-D), there is nearly no binder existing, and the average grain is refined, compared with Figure 3A. It can be refered to the reference Vasu et al, 19 which 3E. The density of green ceramics is higher than that pretreated under low pre-sintered temperature.…”

Section: The Influence Of Pre-sintering Temperature On the Mechanical...mentioning

confidence: 91%

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Laser sintering of Al₂O₃‐based green ceramics prepared by different pre‐sintering temperatures

Liu

Wang

Zhang

2022

Int J Applied Ceramic Tech

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Al2O3‐based green ceramics are prepared by isostatic cold pressing technology. The prepared green ceramics are pre‐sintered at the temperature from room temperature to 1100°C, and then Al2O3 ceramics are prepared by laser sintering. The effects of pre‐sintering temperatures and laser parameters on mechanical properties and the sintering quality are analyzed. The results show that good crystallinity of Al2O3 particles is obtained at a higher pre‐sintering temperature. The flexural strength and density of green ceramics increase with the temperature of heat treatment. The flexural strength decreases slightly at ∼200°C due to the paraffin binder disintegration. The pre‐sintering temperature and laser processing parameters have a significant influence on the sintering quality. With the increase of laser power and laser frequency, dynamic grain growth occurs, and then grains are refined. The majority of plate‐like grains are transformed into long cylindrical‐like grains in the severe densification process. However, porous flocculation microstructures are generated on the samples pre‐sintered at 1100°C after laser sintering, which is due to the material gasification in atmospheric environment during sintering by infrared laser. More uniform microstructure and better sintering quality of samples pre‐sintered at 500°C can be achieved after laser sintering with a relatively narrower grain size distribution.

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Section: Resultsmentioning

confidence: 88%

Section: The Influence Of Pre-sintering Temperature On the Mechanical...mentioning

confidence: 91%

Laser sintering of Al₂O₃‐based green ceramics prepared by different pre‐sintering temperatures

Liu

Wang

Zhang

2022

Int J Applied Ceramic Tech

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“…Investigations have been reported on the degradation in thermophysical properties of a phase change material because of repeated thermal cycling. This result indicates the potential of paraffin wax as a heat storage material in Latent heat thermal energy storage system [16]. Peng, Benli, et al, systematically studies the impacts of thermal conductivity and density of phase change materials on the characteristics of phase change materials-based thermal energy storage systems.…”

Section: Introductionmentioning

confidence: 94%

Investigations on melting and solidification of a battery cooling system using different phase change materials

Pradeep

Venugopal

2021

Therm sci

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The temperature of battery modules in electric vehicles (EVs) must be controlled adequately to remain within a specified range for optimum performance. In this research work, thermal management of battery modules with phase change materials (PCMs) was investigated experimentally and computationally. lithium ion battery pack cooled with a phase change material (PCM) for removing heat generated during the battery charging and discharging cycles. Computations and experiments were carried out to estimate the heat transfer, solidification and melting characteristics of the PCM used in the thermal management of a Li-Ion cell module. Four PCM?s (GR44, RT50, OM35 and paraffin wax) with different melting temperature were used for the study. Battery operating temperature and melting point are the key parameters for selection of PCM. Experiments have been carried out only for OM35 & Paraffin Wax, because PCM OM35 melting point is within the battery operating temperature and Paraffin Wax for considering harshest condition. PCM OM 35 melting temperature range is below 35?C which is accordance with a desire to keep battery temperature below 35?C. Based on experimental & simulation results, it was found that OM35 is keeping battery temperature range minimal, which was the ideal for Li-ion battery thermal management.

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“…The thermal conductivity gets reduced for both PCM and NEPCM when it changes its phase from solid to liquid state due to molecular disorder during phase change. The paraffin wax has negligible degradation of latent heat up to 200 thermal cycles [26], so it can be used as a thermal energy storage system for medium temperature applications.…”

Section: Preparation Of Nepcmmentioning

confidence: 99%

Performance enhancement of a domestic refrigerator with Nanoparticle Enhanced PCM over the condenser side

Kumar¹,

Elakkiyadasan²,

Sathishkumar³

et al. 2020

FME Transactions

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The present work investigates the thermal performance of a domestic refrigerator integrated with the phase change material (PCM) and Nanoparticle Enhanced phase change material (NEPCM) based thermal energy storage system (TES). The materials such as Paraffin wax and Multi Walled Carbon Nano Tube (MWCNT) Dispersed Paraffin Wax are used as TES on condenser side. The experiments are conducted to analyze the performance of the refrigerator by placing the PCM and NEPCM based TES system on the condenser side, and to predict the possible energy saving potential. The integration of PCM and NEPCM based TES system over the condenser results in lowering the ratio of on cycle time to the total cycle time of the refrigerator by 8.26% and 17.95% respectively. The Subcooling of refrigerant takes place due to effective absorption of heat on the condenser side using TES in an isothermal manner. The decrease in the ratio of on cycle time to the total cycle time of the refrigerator and sub cooling of refrigerant lead to an energy saving potential. This potential is estimated as 13.06% with PCM and 18% with NEPCM based TES systems.

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The effect of thermal cyclic variation on the thermophysical property degradation of paraffin as a phase changing energy storage material

Cited by 49 publications

References 34 publications

Laser sintering of Al₂O₃‐based green ceramics prepared by different pre‐sintering temperatures

Laser sintering of Al₂O₃‐based green ceramics prepared by different pre‐sintering temperatures

Investigations on melting and solidification of a battery cooling system using different phase change materials

Performance enhancement of a domestic refrigerator with Nanoparticle Enhanced PCM over the condenser side

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The effect of thermal cyclic variation on the thermophysical property degradation of paraffin as a phase changing energy storage material

Cited by 49 publications

References 34 publications

Laser sintering of Al2O3‐based green ceramics prepared by different pre‐sintering temperatures

Laser sintering of Al2O3‐based green ceramics prepared by different pre‐sintering temperatures

Investigations on melting and solidification of a battery cooling system using different phase change materials

Performance enhancement of a domestic refrigerator with Nanoparticle Enhanced PCM over the condenser side

Contact Info

Product

Resources

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Laser sintering of Al₂O₃‐based green ceramics prepared by different pre‐sintering temperatures

Laser sintering of Al₂O₃‐based green ceramics prepared by different pre‐sintering temperatures