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Stéphane Ginestet - One of the best experts on this subject based on the ideXlab platform.

  • modelling and experimental study of low temperature energy storage reactor using Cementitious Material
    Applied Thermal Engineering, 2017
    Co-Authors: Khadim Ndiaye, Stéphane Ginestet
    Abstract:

    Abstract Renewable energy storage is now essential to enhance the energy performance of buildings and to reduce their environmental impact. Most adsorbent Materials are capable of storing heat, in a large range of temperature. Ettringite, the main product of the hydration of sulfoaluminate binders, has the advantage of high energy storage density at low temperature, around 60 °C. The objective of this study is, first, to predict the behaviour of the ettringite based Material in a thermochemical reactor during the heat storage process, by heat storage modelling, and then to perform experimental validation by tests on a prototype. A model based on the energy and mass balance in the Cementitious Material was developed and simulated in MatLab software, and was able to predict the spatiotemporal behaviour of the storage system. This helped to build a thermochemical reactor prototype for heat storage tests in both the charging and discharging phases. Thus experimental tests validated the numerical model and served as proof of concept.

  • Modelling and experimental study of low temperature energy storage reactor using Cementitious Material
    Applied Thermal Engineering, 2017
    Co-Authors: Khadim Ndiaye, Stéphane Ginestet, Martin Cyr
    Abstract:

    Renewable energy storage is now essential to enhance the energy performance of buildings and to reduce their environmental impact. Most adsorbent Materials are capable of storing heat, in a large range of temperature. Ettringite, the main product of the hydration of sulfoaluminate binders, has the advantage of high energy storage density at low temperature, around 60 degrees C. The objective of this study is, first, to predict the behaviour of the ettringite based Material in a thermochemical reactor during the heat storage process, by heat storage modelling, and then to perform experimental validation by tests on a prototype. A model based on the energy and mass balance in the Cementitious Material was developed and simulated in MatLab software, and was able to predict the spatiotemporal behaviour of the storage system. This helped to build a thermochemical reactor prototype for heat storage tests in both the charging and discharging phases. Thus experimental tests validated the numerical model and served as proof of concept.

Khadim Ndiaye - One of the best experts on this subject based on the ideXlab platform.

  • modelling and experimental study of low temperature energy storage reactor using Cementitious Material
    Applied Thermal Engineering, 2017
    Co-Authors: Khadim Ndiaye, Stéphane Ginestet
    Abstract:

    Abstract Renewable energy storage is now essential to enhance the energy performance of buildings and to reduce their environmental impact. Most adsorbent Materials are capable of storing heat, in a large range of temperature. Ettringite, the main product of the hydration of sulfoaluminate binders, has the advantage of high energy storage density at low temperature, around 60 °C. The objective of this study is, first, to predict the behaviour of the ettringite based Material in a thermochemical reactor during the heat storage process, by heat storage modelling, and then to perform experimental validation by tests on a prototype. A model based on the energy and mass balance in the Cementitious Material was developed and simulated in MatLab software, and was able to predict the spatiotemporal behaviour of the storage system. This helped to build a thermochemical reactor prototype for heat storage tests in both the charging and discharging phases. Thus experimental tests validated the numerical model and served as proof of concept.

  • Modelling and experimental study of low temperature energy storage reactor using Cementitious Material
    Applied Thermal Engineering, 2017
    Co-Authors: Khadim Ndiaye, Stéphane Ginestet, Martin Cyr
    Abstract:

    Renewable energy storage is now essential to enhance the energy performance of buildings and to reduce their environmental impact. Most adsorbent Materials are capable of storing heat, in a large range of temperature. Ettringite, the main product of the hydration of sulfoaluminate binders, has the advantage of high energy storage density at low temperature, around 60 degrees C. The objective of this study is, first, to predict the behaviour of the ettringite based Material in a thermochemical reactor during the heat storage process, by heat storage modelling, and then to perform experimental validation by tests on a prototype. A model based on the energy and mass balance in the Cementitious Material was developed and simulated in MatLab software, and was able to predict the spatiotemporal behaviour of the storage system. This helped to build a thermochemical reactor prototype for heat storage tests in both the charging and discharging phases. Thus experimental tests validated the numerical model and served as proof of concept.

Kyle A. Riding - One of the best experts on this subject based on the ideXlab platform.

  • influence of different particle sizes on reactivity of finely ground glass as supplementary Cementitious Material scm
    Cement & Concrete Composites, 2015
    Co-Authors: Mohammadreza Mirzahosseini, Kyle A. Riding
    Abstract:

    Abstract Finely ground glass can be pozzolanically reactive and serve as a supplementary Cementitious Material (SCM). In this study, the pozzolanic reactivity of three narrow size ranges of green glass cullet, 63–75 μm, 25–38 μm, and 0–25 μm was investigated in order to understand the effects of particle size on glassy SCM reactivity. Isothermal calorimetry, chemical shrinkage, thermogravimetric analysis, and leaching tests were used to measure cement and glass dissolution and reactions. Images taken by scanning electronic microscope (SEM) in backscattered (BS) mode were analyzed to measure glass degree of hydration. In addition, mortar compressive strength and water absorption of samples containing glass powder at different curing temperatures and ages were used to relate reaction degree to performance. Results showed that hydration degree of the glass particles could be directly accounted for through linear correlation with particles surface area.

  • Use of bioethanol byproduct for supplementary Cementitious Material production
    Construction and Building Materials, 2014
    Co-Authors: Feraidon F. Ataie, Kyle A. Riding
    Abstract:

    Abstract Corn stover has the potential for use as a supplementary Cementitious Material (SCM) for concrete. The impact of distilled water and dilute acid pretreatments and post-treatments on the pozzolanic reactivity of corn stover ash (CSA) was studied. Additionally, the potential use of a bioethanol byproduct called high lignin residue (HLR) for SCM production was examined. Pretreated CSA and high lignin residue ash (HLRA) increased the early reactivity of cement paste when used as 20% replacement of cement in the system whereas unpretreated CSA was found to severely suppress the hydration reaction. The highest compressive strength was obtained from samples containing HLRA.

Martin Cyr - One of the best experts on this subject based on the ideXlab platform.

  • Modelling and experimental study of low temperature energy storage reactor using Cementitious Material
    Applied Thermal Engineering, 2017
    Co-Authors: Khadim Ndiaye, Stéphane Ginestet, Martin Cyr
    Abstract:

    Renewable energy storage is now essential to enhance the energy performance of buildings and to reduce their environmental impact. Most adsorbent Materials are capable of storing heat, in a large range of temperature. Ettringite, the main product of the hydration of sulfoaluminate binders, has the advantage of high energy storage density at low temperature, around 60 degrees C. The objective of this study is, first, to predict the behaviour of the ettringite based Material in a thermochemical reactor during the heat storage process, by heat storage modelling, and then to perform experimental validation by tests on a prototype. A model based on the energy and mass balance in the Cementitious Material was developed and simulated in MatLab software, and was able to predict the spatiotemporal behaviour of the storage system. This helped to build a thermochemical reactor prototype for heat storage tests in both the charging and discharging phases. Thus experimental tests validated the numerical model and served as proof of concept.

Maslina Jamil - One of the best experts on this subject based on the ideXlab platform.

  • production of rice husk ash for use in concrete as a supplementary Cementitious Material
    Construction and Building Materials, 2011
    Co-Authors: Muhammad Fauzi Mohd Zain, Mohammed Nazrul Islam, F Mahmud, Maslina Jamil
    Abstract:

    Abstract Rice husk ash (RHA), rich in silica content, can be produced from rice husk using appropriate combustion technique for use in concrete as a supplementary Cementitious Material. This paper discusses production process of RHA from rice husk and the quality of RHA produced using rudimentary furnace of the National University of Malaysia (UKM). Three combustion methods and two grinding methods were used to investigate physical characteristics and chemical aspects of RHA produced. Combustion temperature distribution of the furnace, ash particle size, silica crystallization phase and chemical content of the produced RHA were studied using X-ray diffraction (XRD) analysis and scanning electron microscopy (SEM). From the investigation, it was found that combustion period, chilling duration, and grinding process and duration are important in obtaining RHA of standard fineness and quality. In addition, air ducts in the furnace are very useful in order to supply air for proper burning of rice husk.