Review on the preparation and performance of paraffin-based phase change microcapsules for heat storage

Chang, Zenghu; Wang, Kai; Wu, Xuehong; Gao, Lei; Qiangwei, Wang; He, Linghao; Wang, Yanling; Zhang, Qi

doi:10.1016/j.est.2021.103840

Cited by 97 publications

(24 citation statements)

References 98 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Parameters such as energy storage, chemical and thermal stability, thermal conductivity, shell mechanical strength, and material resistance to fire are useful in examining the thermophysical nature of microcapsules [183][184][185]. However, common issues, including low energy density, high flammability, and poor thermal conductivity, of these fabricated mPCMs has limited their applicability.…”

Section: Thermophysical Enhancement Of Mpcmsmentioning

confidence: 99%

See 1 more Smart Citation

Methods for the Synthesis of Phase Change Material Microcapsules with Enhanced Thermophysical Properties—A State-of-the-Art Review

Al‐Shannaq

Farid

Ikutegbe

2022

Micro

View full text Add to dashboard Cite

Thermal energy storage (TES) has been identified by many researchers as one of the cost-effective solutions for not only storing excess or/wasted energy, but also improving systems’ reliability and thermal efficiency. Among TES, phase change materials (PCMs) are gaining more attention due to their ability to store a reasonably large quantity of heat within small temperature differences. Encapsulation is the cornerstone in expanding the applicability of the PCMs. Microencapsulation is a proven, viable method for containment and retention of PCMs in tiny shells. Currently, there are numerous methods available for synthesis of mPCMs, each of which has its own advantages and limitations. This review aims to discuss, up to date, the different manufacturing approaches to preparing PCM microcapsules (mPCMs). The review also highlights the different potential approaches used for the enhancement of their thermophysical properties, including heat transfer enhancement, supercooling suppression, and shell mechanical strength. This article will help researchers and end users to better understand the current microencapsulation technologies and provide critical guidance for selecting the proper synthesis method and materials based on the required final product specifications.

show abstract

Section: Thermophysical Enhancement Of Mpcmsmentioning

confidence: 99%

“…Researchers have followed different strategies to eliminate or reduce the degree of supercooling of mPCMs. For example, Lei et al (2022) [194] suppressed the mPCMs supercooling by loading nanoparticles into the core material. Three types of nanoparticles were used, including nano-BN, nanodiamond, and nano-Fe.…”

Section: Supercooling Suppressionmentioning

confidence: 99%

Methods for the Synthesis of Phase Change Material Microcapsules with Enhanced Thermophysical Properties—A State-of-the-Art Review

Al‐Shannaq

Farid

Ikutegbe

2022

Micro

View full text Add to dashboard Cite

show abstract

“…There has been an increase in the demand for energy such as coal, petroleum, and natural gas over the past few decades, which has had a devastating effect on the environment. Therefore, the research on materials such as phase change materials (PCMs) to improve energy efficiency has become a hot research topic at present 1,2 . PCMs can make up the gap between the supply and demand of energy in time and space by storing a large amount of dissipated energy when energy is surplus and releasing it in energy shortage 3,4 .…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, the research on materials such as phase change materials (PCMs) to improve energy efficiency has become a hot research topic at present. 1,2 PCMs can make up the gap between the supply and demand of energy in time and space by storing a large amount of dissipated energy when energy is surplus and releasing it in energy shortage. 3,4 Microencapsulated PCMs (MEPCMs) can effectively remedy the defects of low thermal conductivity and leakage of PCMs during phase change process.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of soy polyols‐based PU shell microencapsulated phase change materials for reliable thermal energy storage

Yan

et al. 2022

Intl J of Energy Research

View full text Add to dashboard Cite

Summary Microencapsulated phase change materials (MEPCMs) have attracted extensive attention due to their ability to encapsulate and protect core materials. Herein, this paper presents the successful preparation of an environmentally friendly bio‐based polyurethane (PU) by utilizing soy polyols as raw material and utilizing it innovatively to achieve the microencapsulation of phase change materials (PCMs). The surface morphology, thermal properties, particle size and particle size distribution of MEPCMs were comprehensively characterized and analyzed. Especially, a systematic study was conducted on MEPCMs in terms of their structure and properties, depending on different preparation conditions. According to the results, microcapsules obtained with a core‐shell ratio of 1:1 and mechanical stirring speed of 300 rpm display good spherical shape, smooth surface, and narrow particle size distribution. Moreover, the melting enthalpy of microcapsules can reach 91.4 J/g when the core material content is 48.4%. Moreover, compared to pure paraffin, the prepared microcapsules have superior thermal stability and high reliability, which shows promising energy storage efficiency of 91.5% even after 50 hot‐cold cycles.

show abstract

“…Organic polymers are often used as microcapsule shell materials as a result of their good sealing properties, structural flexibility, and phase change resistance . Among them, polystyrene (PS) has low cost, excellent mechanical performance, and protective properties for the exterior environment, which make it an excellent candidate as a microcapsule shell material. , Xiong et al prepared PS/ n -octadecane (OD) MEPCM with PS as the shell material and OD as the core material, which possesses a latent heat capacity of 142.9 J/g, corresponding to a high encapsulation ratio of 63.4%.…”

Section: Introductionmentioning

confidence: 99%

Phase Change Microcapsules with a Polystyrene/Boron Nitride Nanosheet Hybrid Shell for Enhanced Thermal Management of Electronics

et al. 2022

View full text Add to dashboard Cite

Organic shell material and phase change material (PCM) have low thermal conductivity, which reduces the heat absorption and release rate of microencapsulated phase change materials (MEPCMs). Boron nitride nanosheets (BNNSs) with high thermal conductivity can not only stabilize the oil phase as the Pickering emulsifier but also improve the thermal conductivity of MEPCMs as one of the shell components, thus facilitating the heat conduction in the microcapsule system. Herein, MEPCM with paraffin wax (PW) as the core material and polystyrene (PS) modified by BNNSs as the shell material (PW@PS/BNNS MEPCMs) are synthesized via Pickering emulsion polymerization. The structure of PW@PS/BNNS MEPCMs can be regulated by tuning the PW and BNNS contents, to achieve high latent heat and thermal conductivity. In comparison to pure PW, the thermal conductivity of MEPCMs−5 wt % BNNSs increases by 63.76% at 25 °C. The PW@PS/BNNS powder possesses a latent heat capacity of 166.3 J/ g, corresponding to a high encapsulation ratio of 80.77%. These properties endow the prepared MEPCMs with excellent thermal regulation properties. We also propose the formation mechanism of PW@PS/BNNS MEPCMs via Pickering emulsion polymerization for the first time, which will guide the MEPCM fabrication toward a reliable direction.

show abstract

Review on the preparation and performance of paraffin-based phase change microcapsules for heat storage

Cited by 97 publications

References 98 publications

Methods for the Synthesis of Phase Change Material Microcapsules with Enhanced Thermophysical Properties—A State-of-the-Art Review

Methods for the Synthesis of Phase Change Material Microcapsules with Enhanced Thermophysical Properties—A State-of-the-Art Review

Preparation and characterization of soy polyols‐based PU shell microencapsulated phase change materials for reliable thermal energy storage

Phase Change Microcapsules with a Polystyrene/Boron Nitride Nanosheet Hybrid Shell for Enhanced Thermal Management of Electronics

Contact Info

Product

Resources

About