Heat transfer enhancement of nano-encapsulated phase change material (NEPCM) using metal foam for thermal energy storage

Li, W.Q.; Guo, Shengrong; Tan, Li; Liu, L.L.; Ao, Wen

doi:10.1016/j.ijheatmasstransfer.2020.120737

Cited by 128 publications

(16 citation statements)

References 48 publications

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“…As the world has experienced rapid economic development in recent years, the total global energy consumption has been rising year and year, and the energy demand has been increasing very quickly. − The development of renewable energies and industrial waste heat recovery is now growing at a fast pace, but the problems of dispersion of thermal energy resources, poor energy continuity, and stability in the process of thermal utilization need to be solved. − TES technologies can transform intermittent and incoherent thermal energy into stable energy with continuous output, which can enhance the efficiency of total energy systems. , High-efficiency thermal storage systems using latent-type phase change materials (PCMs) as the storage media have shown great potential for TES, and some PCM thermal storage devices have already been put into industrial use. − It is important to continually deepen the research to improve the heat transfer and storage performance of phase change heat storage devices. , With the characteristics of nontoxicity, noncorrosiveness, high latent heat, low-temperature fluctuations, low cost, and easy accessibility, organic PCMs show great potential in the field of TES, among which paraffin wax (PW) is one of the most representative ones. , However, similar to other organic PCMs, PW generally shows inherently low thermal conductivity, in addition, PW is difficult to maintain its shape during the melting process, which greatly limits its practical use. , …”

Section: Introductionmentioning

confidence: 99%

Improved Anisotropic Thermal Transfer Property of Form-Stable Phase Change Material Supported by 3D Bionic Porous Copper

Guo

Sheng

Zhu

et al. 2023

ACS Sustainable Chem. Eng.

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In response to the characteristics of low heat transfer and unstable morphology of organic phase change materials (PCMs), such as paraffin, a novel anisotropic biomimetic-structured three-dimensional porous Cu skeleton with wood texture and cell wall structure was prepared by the wood template method and was used as a support skeleton for PCMs. The bionic porous Cu maintains the porous channel structure of wood very well. Thanks to the existence of these woody cell walls and interstices, the composite PCMs show highly improved anisotropic thermal conductivity and good antileakage characteristics. The results indicate that the thermal conductivity of the composites in the vertical direction (6.7 W m −1 K −1 ) and the horizontal direction (2.3 W m −1 K −1 ) can reach up to 26.8 and 9.2 times that of paraffin wax (0.25 W m −1 K −1 ), respectively. The novel strategy provided by this work for designing anisotropic thermal conductive structures of composite PCMs presents a promising application in thermal energy storage and thermal management.

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Section: Introductionmentioning

confidence: 99%

Improved Anisotropic Thermal Transfer Property of Form-Stable Phase Change Material Supported by 3D Bionic Porous Copper

Guo

Sheng

Zhu

et al. 2023

ACS Sustainable Chem. Eng.

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“…Its types mainly include IPCMs and OPCMs, and a single type of PCM has some defects, and other PCMs or additives need to be added to improve this problem. In the application process of the PCMs, the TC of some solid–liquid PCMs is not good, and there are leakage problems during the liquefaction and solidification processes, but the high TC of PCM used for cooling applications is always advantageous. − Therefore, nanoparticles, EG, metal foams, etc. are added to the PCMs to improve the TC of the PCMs and prevent the melted PCMs from leaking.…”

Section: Introductionmentioning

confidence: 99%

Comparative Analysis of Additives for Increasing Thermal Conductivity of Phase Change Materials: A Review

Zhang

et al. 2022

Energy Fuels

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The use of cold storage devices to store energy at low peaks of power usage and release it at peaks is an economic measure. It is also one of the main means to solve the imbalance between electricity shortages during the day and abundance at night. Adding cold storage balls equipped with phase change materials (PCMs) into water cold storage devices can utilize the sensible heat of water and the latent heat of PCMs for cold storage, which has a high energy storage density and can provide cold water with a suitable temperature. PCMs can be divided into organic phase change materials (OPCMs) and inorganic phase change materials (IPCMs), but both have defects. Adding additives or other materials to them to form composite phase change materials (CPCMs) can obtain suitable thermal properties. In the process of material application, some PCMs have problems of poor thermal conductivity (TC) and liquid leakage. The use of additives such as expanded graphite (EG), metal foam, and nanoparticles is a better solution to the above problems. In recent years, many scholars have researched PCMs and additives for increasing thermal conductivity (AITC). However, there is still a lack of detailed comparison among EG, metal foam, and nanoparticles. This article will introduce the PCMs used in the temperature zone (TZ) of cold storage air-conditioning systems (CSASs) and analyze their advantages, disadvantages, and improvement methods. This paper will focus on the latest research on the effect of additives such as nanoparticles, EG, and metal foam on the TC of PCMs. It will also compare the special effects of AITC in preventing supercooling, preventing phase separation, preventing leakage of liquid PCMs, and flame retarding. The future research directions of AITC will be discussed.

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“…The commonly used encapsulation methods are currently mainly used stereotyped encapsulation methods: direct mixing method, macro-encapsulation method, and microcapsule encapsulation method. 4,5 Macro packaging is widely used because it is more flexible, and the packaging size, shape, and PCM type can be changed for different application scenarios. The solid-liquid PCM packaging process can be roughly divided into the following processes: melting, conveying, and filling.…”

Section: Introductionmentioning

confidence: 99%

Two-degree-of-freedom internal model control of particle swarm optimization for flow temperature control system in phase change material packaging technology

Zhang

Duan

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part I:

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In this article, a phase change material packaging process system was designed. In view of the hysteresis of the system flow temperature control, a two-degree-of-freedom internal model PID (PSO-TDF-IMC-PID) controller based on particle swarm optimization was determined based on the flow regulating valve model, so as to control the phase change material outlet temperature to keep constant with establishing the system heat transfer model. Compared with other control algorithms, the PSO-TDF-IMC-PID algorithm is proved to be fast, anti-interference and robust. The traditional integral of time multiplied by the absolute value of error criterion performance index is improved, and the improved integral of time multiplied by the absolute value of error criterion is applied to PSO-TDF-IMC-PID algorithm for simulation comparison. Simulation results show that the improved integral of time multiplied by the absolute value of error criterion can effectively eliminate overshoot. The overshoot is reduced from the original 8% to almost 0. To reduce system energy consumption and improve economy, energy consumption constraint conditions are added into the variable trial-error algorithm to calculate economic flow rate and inlet temperature of heat conduction oil. The results show that the dynamic parameters of the system accord with the constraint condition of energy consumption.

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Heat transfer enhancement of nano-encapsulated phase change material (NEPCM) using metal foam for thermal energy storage

Cited by 128 publications

References 48 publications

Improved Anisotropic Thermal Transfer Property of Form-Stable Phase Change Material Supported by 3D Bionic Porous Copper

Improved Anisotropic Thermal Transfer Property of Form-Stable Phase Change Material Supported by 3D Bionic Porous Copper

Comparative Analysis of Additives for Increasing Thermal Conductivity of Phase Change Materials: A Review

Two-degree-of-freedom internal model control of particle swarm optimization for flow temperature control system in phase change material packaging technology

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