Dynamic Charging Performance of a Solar Latent Heat Storage Unit for Efficient Energy Utilization

Wu, Shu-Pao; Fang, Guiyin; Liu, Xu

doi:10.1002/ceat.200900257

Cited by 4 publications

(1 citation statement)

References 13 publications

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“…Encapsulation increases the ratio of heat transfer surface to its volume and also stabilizes the phase change material in relation to its surroundings. Han et al [9], Wu et al [10] provided appropriate heat transfer characteristics, compatibility, chamber volume changeability, and cost for selecting encapsulated materials. Volumetric chambers are a suitable type for encapsulating a phase change material.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Melting Process of Encapsulation Phase Change Material in Spiral Shell and Tube Heat Exchanger

Alaei¹,

Ghasemi²,

Raisi³

et al. 2021

IJHT

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Phase change materials are potentially able to store significant amounts of heat energy at almost constant temperatures, especially during the melting and freezing process. These materials enable us to design the individual thermal energy storage systems (TESS). However, several methods have been proposed to solve low thermal conductivity of PCMs, one of which is encapsulating the material in a heat-conducting membrane. In this research, non-welded steel capsules with unique sealing have been manipulated. A Hermetic-Sealed Chamber is fabricated to investigate the heat transfer from a hot fluid to PCMs. The hot fluid is circulated through the spiral coil and Encapsulated PCMs are embedded in shell side. In two different test, static water and trapped air as intermediate fluids are used between the interior system's wall and the cylindrical capsules. The results show that during the heat storage period, combined heat transfer mechanism and mostly through radiation has played a pivotal role when using trapped air. On the other hand, in different flow regimes, a comparison between the total heat transfer coefficients of different tests show that in trapped air condition (Test 2), values of coefficients are almost 1 to 3 times greater than when the water is used (Test 1). Therefore, by considering case of trapped air and integrating this study with solar technologies as a heat source of hot fluid is an excellent way for building energy at any geographical locations.

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Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Melting Process of Encapsulation Phase Change Material in Spiral Shell and Tube Heat Exchanger

Alaei¹,

Ghasemi²,

Raisi³

et al. 2021

IJHT

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Synthesis and Thermal Energy Storage Properties of Erythritol Tetrastearate and Erythritol Tetrapalmitate

et al. 2010

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Erythritol tetrapalmitate (ETP) and erythritol tetrastearate (ETS) were synthesized as novel solid-liquid phase change materials (PCM) by means of the direct esterification reaction of the erythritol with palmitic and stearic acids. The ETP and ETS esters were characterized chemically using FT-IR and 1 H NMR techniques. The energy storage properties of the esters were determined by DSC analysis. The results indicated that the ETP and ETS esters synthesized as novel solidliquid PCMs are promising materials for thermal energy storage applications at large scale such as solar energy storage, building heating or cooling, indoor temperature controlling, and production of smart textile and insulation clothing.

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Preparation and thermal energy storage properties of poly(n‐butyl methacrylate)/fatty acids composites as form‐stable phase change materials

Sarı

Alkan

2011

Polymer Composites

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This work is focused on the preparation, characterization, and determination of thermal energy storage properties of poly(n‐butyl methacrylate) (PnBMA)/fatty acid composites as form‐stable phase change material (PCM). In the composite materials, the fatty acids act as latent heat storage material whereas PnBMA serves as supporting material, which prevents the leakage of the melted fatty acids. The maximum encapsulation ratio for all fatty acids was found to be 40 wt%. The composites that do not allow PCM leakage in melted state were identified as form‐stable PCMs. The compatibility of fatty acids with PnBMA is investigated by optical microscopy (OM) and Fourier Transform Infrared (FT‐IR) spectroscopy. Thermal properties and thermal reliability of the form‐stable composite PCMs were determined using differential scanning calorimetry (DSC). DSC analysis revealed that the form‐stable composite PCMs had melting temperatures between 29.62°C and 53.73°C and latent heat values between 67.23 J/g and 87.34 J/g. Thermal stability of the composite PCMs was studied by thermal gravimetric (TG) analysis and the results indicated that the form‐stable PCMs had good thermal stability. In addition, thermal cycling test showed that the composite PCMs had good thermal reliability with respect to the changes in their thermal properties after accelerated 5,000 thermal cycling. On the basis of all results, it was also concluded that the prepared form‐stable composite PCMs had important potential for many thermal energy storage applications such as solar space heating of buildings by using wallboard, plasterboard or floors integrated with PCM. POLYM. COMPOS., 2012. © 2011 Society of Plastics Engineers

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Dynamic Charging Performance of a Solar Latent Heat Storage Unit for Efficient Energy Utilization

Cited by 4 publications

References 13 publications

Experimental Investigation of Melting Process of Encapsulation Phase Change Material in Spiral Shell and Tube Heat Exchanger

Experimental Investigation of Melting Process of Encapsulation Phase Change Material in Spiral Shell and Tube Heat Exchanger

Synthesis and Thermal Energy Storage Properties of Erythritol Tetrastearate and Erythritol Tetrapalmitate

Preparation and thermal energy storage properties of poly(n‐butyl methacrylate)/fatty acids composites as form‐stable phase change materials

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