Abdessamad Faik - Academia.edu (original) (raw)

Papers by Abdessamad Faik

Applied Thermal Engineering, Jul 1, 2023

AIP Conference Proceedings, 2019

New experimental data on the saturated liquid heat capacity for the R600a/mineral oil solutions (... more New experimental data on the saturated liquid heat capacity for the R600a/mineral oil solutions (ROS) is reported in the paper. Data on the two-phase isochoric heat capacity was obtained for different oil fractions of the refrigerant in the temperature range from 260 to 330 K. The obtained information was used to calculate the caloric properties of the ROS. Moreover, an influence of fullerenes C60 on the caloric properties of mineral oil was examined. The measurements of the heat capacity for the ROS, compressor oil and compressor oil containing fullerenes C60 were performed using an experimental setup, which implements a direct heating method in adiabatic calorimeter. In addition, the heat capacity of oil and oil containing fullerenes C60 was measured using differential scanning calorimetry. The effect of increasing the heat capacity of the compressor oil with the additives of 0.0020 kg·kg-1 of fullerenes C60 was observed.

Eurasian Journal of Analytical Chemistry, May 24, 2019

Recently, thermo chemical heat storage (TES) has gained important attentions, since it offers a h... more Recently, thermo chemical heat storage (TES) has gained important attentions, since it offers a high storage capacity with low temperature ensured by thermochemical heat storage materials (TcSM) 1. The hydrates salt can react, store and release heat during a Charge/Discharge cycle based on hydration/dehydration reactions over different temperature range. Due to their good energy storage density, hydrates salts have been widely developed on different researchs to be used in solar energy storage2.Blödite, Konyaite and Löweite are double salt with a good behavior as TcSM thanks to their significant reaction enthalpy. However, theirapplications still limited by the problems of reversibility, complexity and the high charging temperature which is supposed to be provided by solar domestic collectors applications. Moreover, it is complicated to predict the purity and the structural stability of these salts during the dehydration and hydration reaction, which affects the storage density and the efficiency of TcSM. In this work, Konyaite-Blödite (MDHS1) and Löweite-Blödite (MDHS2) were synthesized and characterized. Quantitative XRD analysis of mixtures was performed adopting the Reference Ratio Intensity (RIR) method 3. In addition, an evaluation of (MDHS) is developed taking into account many parameters such as charge temperature, storage density, reversibility and storage performance in order to identify the most promising candidate for domesticheat storage systems. FTIR results confirm good reversibility of hygroscopic behavior at temperature up to 200 °C. Thesemixtures show agood stability behavior, but only MDHS2 offers a good net storage density of 370.8 KWh.m-3 and an excellent efficiency of 38%.

Solar Energy Materials and Solar Cells, Sep 1, 2020

REVUE DE L’ENTREPRENEURIAT ET DE L’INNOVATION, Jul 21, 2018

The aim of this paper is to investigate new classes of materials, metal alloys, as phase change m... more The aim of this paper is to investigate new classes of materials, metal alloys, as phase change materials (PCMs) for thermal energy storage (TES) application. In the first stage of this work, we discuss the considerations for the use of metal and metal alloys as PCMs for high temperature thermal storage applications, as well as summarize the literature on the limited research in this area. The second stage of this work consists to synthesis, analysis and characterize a set of binary metal alloys based on Mg, Al, Cu and Si

Materials Today: Proceedings, 2020

2021 9th International Renewable and Sustainable Energy Conference (IRSEC), Nov 23, 2021

Many researchers have recently become interested in the hybridization of concentrating solar powe... more Many researchers have recently become interested in the hybridization of concentrating solar power (CSP) and photovoltaic (PV) technologies. The hybridization has the objective to gather the low cost of the thermal storage system of CSP with the drop in PV technology equipment. Unlike the common hybridization configuration in which CSP and PV works separately to produce electricity, through this paper we present a new configuration where the PV is used to upgrade the produced heat from CSP by using the electricity produced. Midelt city (Morocco) is selected to perform this study, and system advisor model (SAM) software to simulate the PV and CSP behavior. SAM enables for the greatest performance of CSP and PV plants by optimizing the DNI design point and tilting angle. The outcomes demonstrate that these two parameters have an impact on annual production, LCOE, and capacity factor. The best DNI design point for CSP in Midelt City is 400W/m2, while the optimum tilt angle for PV plants is 32°. Furthermore, using a PV plant to upgrade the heat transfer fluid will save the plant 163, 500 € in the first year.

Journal of energy storage, Oct 1, 2023

Acta Crystallographica Section A, Aug 23, 2008

Springer eBooks, 1983

So far a great deal of effort has been put in fabricating and improving diffused waveguide films ... more So far a great deal of effort has been put in fabricating and improving diffused waveguide films in LiNbO3 and LiTaO3. The systems are not perfect as Ti only increases the extraordinary index for LiNbO3; this is associated with a small electro-optic coefficient. With LiTaO3 there is a problem that the Nb diffucion temperature is above the Curie temperature so one must repole the crystal after the dopant is added.

Optical Materials, Jul 1, 2022

2021 9th International Renewable and Sustainable Energy Conference (IRSEC), Nov 23, 2021

Numerous studies have recently focused on the utilization of abundant natural rocks as sensible h... more Numerous studies have recently focused on the utilization of abundant natural rocks as sensible heat storage materials in packed bed systems. However, there is limited knowledge on the use of mining by-products as filler material, and their applicability has yet to be thoroughly investigated. The focus of this research paper is to investigate the potential of a selected mining by-product known as "Porcellanite" as filler materials in a packed bed storage system. Several techniques were used to characterize this rock. Its structure and morphology were also determined, as well as its thermophysical and mechanical properties. Temperature variation’s effect on thermal capacity and thermal conductivity was also investigated. The thermal stability of rocks was also tested using thermogravimetric analysis up to 400°C. Obtained results prove the potential of the "Porcellanite" rocks" as storage material.

Journal of Applied Physics, May 1, 1983

Measurements are reported for the dispersion curves in the visible wavelength range of a variety ... more Measurements are reported for the dispersion curves in the visible wavelength range of a variety of optical waveguides. Waveguides were formed in LiNbO3 and LiTaO3 by the implantation of helium ions. The radiation damage reduces the refractive index in both materials by about 12% throughout the visible region. This is thought to result from amorphization of the lattice. Waveguides formed by impurity enhancement of the refractive index were measured in soda lime glass doped by ion exchange of Li, K, Rb, Cs, or Ag. In each case the percentage increase in index was wavelength dependent. In particular, the Ag ion exchange waveguides have features attributed to colloidal silver metal. The metal colloids give both dispersion anomalies and a red luminescence. The luminescence was used to measure the losses in the waveguide.

Energy Conversion and Management

2021 9th International Renewable and Sustainable Energy Conference (IRSEC)

Numerous studies have recently focused on the utilization of abundant natural rocks as sensible h... more Numerous studies have recently focused on the utilization of abundant natural rocks as sensible heat storage materials in packed bed systems. However, there is limited knowledge on the use of mining by-products as filler material, and their applicability has yet to be thoroughly investigated. The focus of this research paper is to investigate the potential of a selected mining by-product known as "Porcellanite" as filler materials in a packed bed storage system. Several techniques were used to characterize this rock. Its structure and morphology were also determined, as well as its thermophysical and mechanical properties. Temperature variation’s effect on thermal capacity and thermal conductivity was also investigated. The thermal stability of rocks was also tested using thermogravimetric analysis up to 400°C. Obtained results prove the potential of the "Porcellanite" rocks" as storage material.

2021 9th International Renewable and Sustainable Energy Conference (IRSEC)

Many researchers have recently become interested in the hybridization of concentrating solar powe... more Many researchers have recently become interested in the hybridization of concentrating solar power (CSP) and photovoltaic (PV) technologies. The hybridization has the objective to gather the low cost of the thermal storage system of CSP with the drop in PV technology equipment. Unlike the common hybridization configuration in which CSP and PV works separately to produce electricity, through this paper we present a new configuration where the PV is used to upgrade the produced heat from CSP by using the electricity produced. Midelt city (Morocco) is selected to perform this study, and system advisor model (SAM) software to simulate the PV and CSP behavior. SAM enables for the greatest performance of CSP and PV plants by optimizing the DNI design point and tilting angle. The outcomes demonstrate that these two parameters have an impact on annual production, LCOE, and capacity factor. The best DNI design point for CSP in Midelt City is 400W/m2, while the optimum tilt angle for PV plants is 32°. Furthermore, using a PV plant to upgrade the heat transfer fluid will save the plant 163, 500 € in the first year.

Applied Thermal Engineering, Jul 1, 2023

AIP Conference Proceedings, 2019

New experimental data on the saturated liquid heat capacity for the R600a/mineral oil solutions (... more New experimental data on the saturated liquid heat capacity for the R600a/mineral oil solutions (ROS) is reported in the paper. Data on the two-phase isochoric heat capacity was obtained for different oil fractions of the refrigerant in the temperature range from 260 to 330 K. The obtained information was used to calculate the caloric properties of the ROS. Moreover, an influence of fullerenes C60 on the caloric properties of mineral oil was examined. The measurements of the heat capacity for the ROS, compressor oil and compressor oil containing fullerenes C60 were performed using an experimental setup, which implements a direct heating method in adiabatic calorimeter. In addition, the heat capacity of oil and oil containing fullerenes C60 was measured using differential scanning calorimetry. The effect of increasing the heat capacity of the compressor oil with the additives of 0.0020 kg·kg-1 of fullerenes C60 was observed.

Eurasian Journal of Analytical Chemistry, May 24, 2019

Recently, thermo chemical heat storage (TES) has gained important attentions, since it offers a h... more Recently, thermo chemical heat storage (TES) has gained important attentions, since it offers a high storage capacity with low temperature ensured by thermochemical heat storage materials (TcSM) 1. The hydrates salt can react, store and release heat during a Charge/Discharge cycle based on hydration/dehydration reactions over different temperature range. Due to their good energy storage density, hydrates salts have been widely developed on different researchs to be used in solar energy storage2.Blödite, Konyaite and Löweite are double salt with a good behavior as TcSM thanks to their significant reaction enthalpy. However, theirapplications still limited by the problems of reversibility, complexity and the high charging temperature which is supposed to be provided by solar domestic collectors applications. Moreover, it is complicated to predict the purity and the structural stability of these salts during the dehydration and hydration reaction, which affects the storage density and the efficiency of TcSM. In this work, Konyaite-Blödite (MDHS1) and Löweite-Blödite (MDHS2) were synthesized and characterized. Quantitative XRD analysis of mixtures was performed adopting the Reference Ratio Intensity (RIR) method 3. In addition, an evaluation of (MDHS) is developed taking into account many parameters such as charge temperature, storage density, reversibility and storage performance in order to identify the most promising candidate for domesticheat storage systems. FTIR results confirm good reversibility of hygroscopic behavior at temperature up to 200 °C. Thesemixtures show agood stability behavior, but only MDHS2 offers a good net storage density of 370.8 KWh.m-3 and an excellent efficiency of 38%.

Solar Energy Materials and Solar Cells, Sep 1, 2020

REVUE DE L’ENTREPRENEURIAT ET DE L’INNOVATION, Jul 21, 2018

The aim of this paper is to investigate new classes of materials, metal alloys, as phase change m... more The aim of this paper is to investigate new classes of materials, metal alloys, as phase change materials (PCMs) for thermal energy storage (TES) application. In the first stage of this work, we discuss the considerations for the use of metal and metal alloys as PCMs for high temperature thermal storage applications, as well as summarize the literature on the limited research in this area. The second stage of this work consists to synthesis, analysis and characterize a set of binary metal alloys based on Mg, Al, Cu and Si

Materials Today: Proceedings, 2020

2021 9th International Renewable and Sustainable Energy Conference (IRSEC), Nov 23, 2021

Many researchers have recently become interested in the hybridization of concentrating solar powe... more Many researchers have recently become interested in the hybridization of concentrating solar power (CSP) and photovoltaic (PV) technologies. The hybridization has the objective to gather the low cost of the thermal storage system of CSP with the drop in PV technology equipment. Unlike the common hybridization configuration in which CSP and PV works separately to produce electricity, through this paper we present a new configuration where the PV is used to upgrade the produced heat from CSP by using the electricity produced. Midelt city (Morocco) is selected to perform this study, and system advisor model (SAM) software to simulate the PV and CSP behavior. SAM enables for the greatest performance of CSP and PV plants by optimizing the DNI design point and tilting angle. The outcomes demonstrate that these two parameters have an impact on annual production, LCOE, and capacity factor. The best DNI design point for CSP in Midelt City is 400W/m2, while the optimum tilt angle for PV plants is 32°. Furthermore, using a PV plant to upgrade the heat transfer fluid will save the plant 163, 500 € in the first year.

Journal of energy storage, Oct 1, 2023

Acta Crystallographica Section A, Aug 23, 2008

Springer eBooks, 1983

So far a great deal of effort has been put in fabricating and improving diffused waveguide films ... more So far a great deal of effort has been put in fabricating and improving diffused waveguide films in LiNbO3 and LiTaO3. The systems are not perfect as Ti only increases the extraordinary index for LiNbO3; this is associated with a small electro-optic coefficient. With LiTaO3 there is a problem that the Nb diffucion temperature is above the Curie temperature so one must repole the crystal after the dopant is added.

Optical Materials, Jul 1, 2022

2021 9th International Renewable and Sustainable Energy Conference (IRSEC), Nov 23, 2021

Numerous studies have recently focused on the utilization of abundant natural rocks as sensible h... more Numerous studies have recently focused on the utilization of abundant natural rocks as sensible heat storage materials in packed bed systems. However, there is limited knowledge on the use of mining by-products as filler material, and their applicability has yet to be thoroughly investigated. The focus of this research paper is to investigate the potential of a selected mining by-product known as "Porcellanite" as filler materials in a packed bed storage system. Several techniques were used to characterize this rock. Its structure and morphology were also determined, as well as its thermophysical and mechanical properties. Temperature variation’s effect on thermal capacity and thermal conductivity was also investigated. The thermal stability of rocks was also tested using thermogravimetric analysis up to 400°C. Obtained results prove the potential of the "Porcellanite" rocks" as storage material.

Journal of Applied Physics, May 1, 1983

Measurements are reported for the dispersion curves in the visible wavelength range of a variety ... more Measurements are reported for the dispersion curves in the visible wavelength range of a variety of optical waveguides. Waveguides were formed in LiNbO3 and LiTaO3 by the implantation of helium ions. The radiation damage reduces the refractive index in both materials by about 12% throughout the visible region. This is thought to result from amorphization of the lattice. Waveguides formed by impurity enhancement of the refractive index were measured in soda lime glass doped by ion exchange of Li, K, Rb, Cs, or Ag. In each case the percentage increase in index was wavelength dependent. In particular, the Ag ion exchange waveguides have features attributed to colloidal silver metal. The metal colloids give both dispersion anomalies and a red luminescence. The luminescence was used to measure the losses in the waveguide.

Energy Conversion and Management

2021 9th International Renewable and Sustainable Energy Conference (IRSEC)

Numerous studies have recently focused on the utilization of abundant natural rocks as sensible h... more Numerous studies have recently focused on the utilization of abundant natural rocks as sensible heat storage materials in packed bed systems. However, there is limited knowledge on the use of mining by-products as filler material, and their applicability has yet to be thoroughly investigated. The focus of this research paper is to investigate the potential of a selected mining by-product known as "Porcellanite" as filler materials in a packed bed storage system. Several techniques were used to characterize this rock. Its structure and morphology were also determined, as well as its thermophysical and mechanical properties. Temperature variation’s effect on thermal capacity and thermal conductivity was also investigated. The thermal stability of rocks was also tested using thermogravimetric analysis up to 400°C. Obtained results prove the potential of the "Porcellanite" rocks" as storage material.

2021 9th International Renewable and Sustainable Energy Conference (IRSEC)

Many researchers have recently become interested in the hybridization of concentrating solar powe... more Many researchers have recently become interested in the hybridization of concentrating solar power (CSP) and photovoltaic (PV) technologies. The hybridization has the objective to gather the low cost of the thermal storage system of CSP with the drop in PV technology equipment. Unlike the common hybridization configuration in which CSP and PV works separately to produce electricity, through this paper we present a new configuration where the PV is used to upgrade the produced heat from CSP by using the electricity produced. Midelt city (Morocco) is selected to perform this study, and system advisor model (SAM) software to simulate the PV and CSP behavior. SAM enables for the greatest performance of CSP and PV plants by optimizing the DNI design point and tilting angle. The outcomes demonstrate that these two parameters have an impact on annual production, LCOE, and capacity factor. The best DNI design point for CSP in Midelt City is 400W/m2, while the optimum tilt angle for PV plants is 32°. Furthermore, using a PV plant to upgrade the heat transfer fluid will save the plant 163, 500 € in the first year.