Phase change material based thermal energy storage applications for air conditioning: Review

Muzhanje, Allan Takudzwa; Hassan, Mohsen A.; Hassan, Hamdy

doi:10.1016/j.applthermaleng.2022.118832

Cited by 52 publications

(13 citation statements)

References 97 publications

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“…Therefore, a variety of phase-change composites based on organic PCMs and inorganic 3D foams have been developed for versatile applications, such as air-conditioning systems, energy-saving buildings, photothermal energy storage systems, and Li-ion batteries. 23 In contrast to inorganic foams, the utilization of elastic polymer foams as support materials for organic PCMs can endow the resultant phase-change composites with shape memory properties. This may expand the application of the phase-change composites into soft actuators and control devices.…”

Section: ■ Introductionmentioning

confidence: 99%

“…These 3D foam networks include expanded graphite, graphene aerogel, boron nitride aerogel, carbon nanotube sponge, and MXene aerogel, − whose large porous structure can prevent the migration and leakage of molten PCMs, providing a high package efficiency and high thermal conductance for the resultant phase-change composites. Therefore, a variety of phase-change composites based on organic PCMs and inorganic 3D foams have been developed for versatile applications, such as air-conditioning systems, energy-saving buildings, photothermal energy storage systems, and Li-ion batteries. − …”

Section: Introductionmentioning

confidence: 99%

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Eco-Friendly Flame-Retardant Phase-Change Composite Films Based on Polyphosphazene/Phosphorene Hybrid Foam and Paraffin Wax for Light/Heat-Dual-Actuated Shape Memory

Zhou,

Liu,

Zhang

et al. 2024

ACS Appl. Mater. Interfaces

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Multiactuated shape memory materials are a class of promising intelligent materials that have received great interest in the fields of self-healing, anticounterfeiting, biomedical, soft robotic, and smart thermal management applications. To obtain a light/heat-dual-actuated shape memory material for thermal management applications in fire safety, we have designed a type of halogen-free flame-retardant phase-change composite film based on polyaryloxyphosphazene (PDAP)/phosphorene (PR) hybrid foam as a support material and paraffin wax (PW) as a phase-change material (PCM). PDAP was synthesized as a flexible foam matrix through the ring-opening polymerization of hexachlorocyclotriphosphazene, followed by a substitution reaction of aryloxy groups. The porosity of the PDAP foam is improved by introducing PR nanosheets, facilitating a high latent heat capacity of the PDAP−PR/PW composite films for thermal management applications. The PDAP−PR/PW composite films can implement rapid shape recovery within 65 s in the heating process, which is much shorter than that of the corresponding film without PR nanosheets (185 s). Furthermore, the PDAP−PR/PW composite films also exhibit light-actuated shape memory behavior thanks to their good solar-tothermal energy absorption and conversion contributed by PR nanosheets as a highly effective photothermal material. More importantly, the presence of PR nanosheets imparts an excellent flame-retardant property to the PDAP−PR/PW composite films. The PDAP−PR/PW composite film can be self-extinguished within 2 s after the flame. Through an innovative integration of flexible polyphosphazene foam, PR nanosheets, and solid−liquid PCM to obtain a sensitive actuating response to light and heat, this study offers a new approach for developing multiactuated and eco-friendly flame-retardant shape memory materials to meet the requirement of applications with a requirement of fire safety in soft actuators, thermal therapy, control devices, and so on.

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Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Eco-Friendly Flame-Retardant Phase-Change Composite Films Based on Polyphosphazene/Phosphorene Hybrid Foam and Paraffin Wax for Light/Heat-Dual-Actuated Shape Memory

Zhou,

Liu,

Zhang

et al. 2024

ACS Appl. Mater. Interfaces

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“…6,7 Due to their high latent heat storage capacity and isothermal characteristic during the time of phase transition, PCMs have been extensively studied by researchers and been employed for thermal energy storage for many decades. 8,9 In recent years, PCMs even began to be used in life science applications, for example, drug delivery, 10 controlled release 11 and biomedical applications. 12 PCMs can be divided into three categories, namely, organic and inorganic ones, and eutectics.…”

Section: Introductionmentioning

confidence: 99%

“…PCMs release and absorb thermal energy in the form of latent heat in phase transition procedures, which means the temperature variation in phase change processes is negligible 6,7 . Due to their high latent heat storage capacity and isothermal characteristic during the time of phase transition, PCMs have been extensively studied by researchers and been employed for thermal energy storage for many decades 8,9 . In recent years, PCMs even began to be used in life science applications, for example, drug delivery, 10 controlled release 11 and biomedical applications 12 …”

Section: Introductionmentioning

confidence: 99%

Form‐stable phase change materials supported by nanostructured zinc polyacrylate weakening super cooling of polyethylene glycol

Shen

Luo

et al. 2023

J of Applied Polymer Sci

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In order to solve the leakage and distinct super cooling issues of polyethylene glycol (PEG), zinc polyacrylate was used as the supporting material to prepare PEG‐based form‐stable phase change materials (FSPCMs) in this paper. The polyacrylate fractions of zinc polyacrylate are crosslinked by zinc ions through electrovalent bonding. Due to the strong intermolecular force between PEG molecules and the crosslinked polyacrylate fractions, the PCMs have stabilized shape even at 90°C. Zinc ions will gather together because of the incompatibility between PEG matrix and zinc ions, to form nanostructure as the nucleating agent of PEG, weakening the supercooling of the FSPCMs. The enthalpy change values of the FSPCMs in the phase transition processes are all above 120.0 J g−1, showing good thermal energy storage capacity. Additionally, the FSPCMs after 100 times of thermal cycling possess similar thermal properties to the original ones, indicating that the nanostructured zinc polyacrylate has stable interaction with the PEG matrix.

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“…[ 11 ] The impacts of PCM design, flow, and thermal properties on the efficiency of ACS and the prospective usage of PCM in boosting the power savings and COP of ACS are also highlighted. Muzhanje et al [ 12 ] surveyed the past theoretical and experimental studies of PCM uses in ACS in order to analyze energy‐saving potential options. According to the review, the integration of PCM with ACS enhanced the COP by about 1.8% and saved power by 5% at least.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Energy and Exergy Assessment of Vapor Compression Refrigeration Unit Enhanced via Encapsulated Phase Change Material

Ismail,

Hassan

2023

Energy Tech

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Energy and exergy performance of simple vapor compression refrigeration unit is investigated experimentally with and without coupling heat exchanger of phase change material before the condenser. The hot outside air is cooled before entering the condenser throughout the day by flowing over the cooled phase change material structure that previously solidified during nighttime. Phase change material SP24 is employed because its melting/freezing range is suitable for most selected countries' climates. An experimental set‐up of an air‐phase change material heat exchanger coupled with the unit is constructed to examine its performance, including pressure–enthalpy curve, coefficient of performance, exergy performance, and power consumption including inflow air temperatures and flow rates impacts. Results affirm that the coefficient of performance, cooling capacity, power usage, and exergy destruction are improved by using phase change material. Compared to the unmodified unit, the maximum percentage of saved power and exergy destruction enhancement for the modified refrigeration unit with phase change material is about 8.8% and 10%, respectively. The maximum coefficient of performance and exergy efficiency rise is about 15.1% and 14.2%, respectively. Increasing the temperature differential across the phase change material heat exchanger, either by increasing inlet temperature or decreasing airflow, enhances the refrigeration unit power saving.

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Phase change material based thermal energy storage applications for air conditioning: Review

Cited by 52 publications

References 97 publications

Eco-Friendly Flame-Retardant Phase-Change Composite Films Based on Polyphosphazene/Phosphorene Hybrid Foam and Paraffin Wax for Light/Heat-Dual-Actuated Shape Memory

Eco-Friendly Flame-Retardant Phase-Change Composite Films Based on Polyphosphazene/Phosphorene Hybrid Foam and Paraffin Wax for Light/Heat-Dual-Actuated Shape Memory

Form‐stable phase change materials supported by nanostructured zinc polyacrylate weakening super cooling of polyethylene glycol

Experimental Investigation of Energy and Exergy Assessment of Vapor Compression Refrigeration Unit Enhanced via Encapsulated Phase Change Material

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