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Gui Yin Fang - One of the best experts on this subject based on the ideXlab platform.

  • Thermal Energy Storage materials and systems for solar Energy applications
    Renewable and Sustainable Energy Reviews, 2017
    Co-Authors: Guruprasad Alva, Xingyi Huang, Lingkun Liu, Xiang Huang, Gui Yin Fang
    Abstract:

    Usage of renewable and clean solar Energy is expanding at a rapid pace. Applications of Thermal Energy Storage (TES) facility in solar Energy field enable dispatchability in generation of electricity and home space heating requirements. It helps mitigate the intermittence issue with an Energy source like solar Energy. TES also helps in smoothing out fluctuations in Energy demand during different time periods of the day. In this paper, a summary of various solar Thermal Energy Storage materials and Thermal Energy Storage systems that are currently in use is presented. The properties of solar Thermal Energy Storage materials are discussed and analyzed. The dynamic performances of solar Thermal Energy Storage systems in recent investigations are also presented and summarized.

  • Experimental Investigation of Performances of Microcapsule Phase Change Material for Thermal Energy Storage
    Chemical Engineering & Technology, 2010
    Co-Authors: Gui Yin Fang, Xu Liu
    Abstract:

    Performances of microcapsule phase change material (MPCM) for Thermal Energy Storage are investigated. The MPCM for Thermal Energy Storage is prepared by a complex coacervation method with gelatin and acacia as wall materials and paraffin as core material in an emulsion system. A scanning electron microscope (SEM) was used to study the microstructure of the MPCM. In Thermal analysis, a differential scanning calorimeter (DSC) was employed to determine the melting temperature, melting latent heat, solidification temperature, and solidification latent heat of the MPCM for Thermal Energy Storage. The SEM micrograph indicates that the MPCM has been successfully synthesized and that the particle size of the MPCM is about 81 μm. The DSC output results show that the melting temperature of the MPCM is 52.05 °C, the melting latent heat is 141.03 kJ/kg, the solidification temperature is 59.68 °C, and the solidification latent heat is 121.59 kJ/kg. The results prove that the MPCM for Thermal Energy Storage has a larger phase change latent heat and suitable phase change temperature, so it can be considered as an efficient Thermal Energy Storage material for heat utilizing systems.

P J Erens - One of the best experts on this subject based on the ideXlab platform.

  • Simulation and Testing of a Latent Heat Thermal Energy Storage Unit with Metallic Phase Change Material
    Energy Procedia, 2014
    Co-Authors: J P Kotzé, T W Von Backström, T. W. Von Backström, P J Erens
    Abstract:

    Latent heat Thermal Energy Storage in metallic phase change materials offers a Thermal Energy Storage concept that can store Energy at higher temperatures than with sensible Thermal Energy Storage. This may enable the use of high efficiency thermodynamic cycles in CSP applications, which may lead to a reduction in levelised cost of electricity. Eutectic aluminum silicon alloy, AlSi12, is an attractive phase change material because of its moderate melting temperature, high Thermal conductivity, and high heat of fusion. A prototype Thermal Energy Storage test rig has been built and tested as to better understand the behavior of latent heat Thermal Energy Storage. A mathematical model was developed to predict the behavior of such a heat Storage unit. The model was compared with the behavior of the test rig during discharge. The model proved to simulate the latent heat Thermal Energy Storage with reasonable accuracy. It is recommended that more accurate material property data be obtained and that the Thermal Energy Storage test rig be modified as to improve readings.

Keru Wu - One of the best experts on this subject based on the ideXlab platform.

  • development of Thermal Energy Storage concrete
    Cement and Concrete Research, 2004
    Co-Authors: Dong Zhang, Zongjin Li, Jianmin Zhou, Keru Wu
    Abstract:

    In this paper, a two-step procedure to produce Thermal Energy Storage concrete (TESC) is described. At the first step, Thermal Energy Storage aggregates (TESAs) were made from porous aggregates absorbing phase changing materials (PCMs). At the second step, TESC was produced with a normal mixing method and using TESAs. An adequate amount of PCM can be incorporated into concrete by the two-step procedure. It can be seen experimentally that the Energy Storage capacity of the TESC was comparable with that of a commercially available PCM. The experimental results showed that the geometrical features of the porous structure of the aggregates had significant effect on their absorbing ability of the PCM. Aggregates with large pore connectivity factor and transport tunnel in boundary part can absorb more PCM. It was also found that the phase changing behavior was affected by the volume fraction of PCM in concrete.

Maarten J. Rood - One of the best experts on this subject based on the ideXlab platform.

  • Thermal Energy Storage systems for concentrated solar power plants
    Renewable & Sustainable Energy Reviews, 2017
    Co-Authors: Ugo Pelay, Yilin Fan, Lingai Luo, Driss Stitou, Maarten J. Rood
    Abstract:

    Solar Thermal Energy, especially concentrated solar power (CSP), represents an increasingly attractive renewable Energy source. However, one of the key factors that determine the development of this technology is the integration of efficient and cost effective Thermal Energy Storage (TES) systems, so as to overcome CSP's intermittent character and to be more economically competitive. This paper presents a review on Thermal Energy Storage systems installed in CSP plants. Various aspects are discussed including the state-of-the-art on CSP plants all over the world and the trend of development, different technologies of TES systems for high temperature applications (200–1000°C) with a focus on thermochemical heat Storage, and Storage concepts for their integration in CSP plants.

J P Kotzé - One of the best experts on this subject based on the ideXlab platform.

  • Simulation and Testing of a Latent Heat Thermal Energy Storage Unit with Metallic Phase Change Material
    Energy Procedia, 2014
    Co-Authors: J P Kotzé, T W Von Backström, T. W. Von Backström, P J Erens
    Abstract:

    Latent heat Thermal Energy Storage in metallic phase change materials offers a Thermal Energy Storage concept that can store Energy at higher temperatures than with sensible Thermal Energy Storage. This may enable the use of high efficiency thermodynamic cycles in CSP applications, which may lead to a reduction in levelised cost of electricity. Eutectic aluminum silicon alloy, AlSi12, is an attractive phase change material because of its moderate melting temperature, high Thermal conductivity, and high heat of fusion. A prototype Thermal Energy Storage test rig has been built and tested as to better understand the behavior of latent heat Thermal Energy Storage. A mathematical model was developed to predict the behavior of such a heat Storage unit. The model was compared with the behavior of the test rig during discharge. The model proved to simulate the latent heat Thermal Energy Storage with reasonable accuracy. It is recommended that more accurate material property data be obtained and that the Thermal Energy Storage test rig be modified as to improve readings.