Mohammed El Ganaoui

• PhD and HDR
• Professor (Full) at University of Lorraine

In recent decades, the degradation of air quality has become a growing global concern, driven by rapid industrialization, increased urbanization, and the emergence of new health threats such as the COVID-19 pandemic. This chapter explores the evolution of indoor air quality (IAQ) as a critical issue, with a focus on the development and implementati...

Recent studies have examined the performance of various turbulence models and ventilation strategies through both 2D and 3D simulations. This research aims to evaluate the effectiveness of turbulence models, such as k-epsilon and k-omega, in simulating airflow and CO2 distribution under different ventilation conditions. Additionally, the study comp...

Les principaux faits démontrant le changement de climat sont détaillés : vagues de chaleur, cyclones, sécheresses récurrentes suivies d'incendies et même d'inondations comme au Maroc, fonte du pergélisol en Sibérie, élévation du niveau de la mer, se traduisant par une augmentation constante du coût économique de ces désastres naturels. Après avoir...

The Cool Roof concept, known for its efficiency in summer due to high temperatures during this period, employs a light coating that covers the roof to prevent the absorption of heat and maintain lower indoor temperatures. This study integrates a chemical component with biomaterials to enhance performance and reduce CO2 emissions. The composition in...

Given the increasing demand for electricity due to modernization and population growth, there is an urgent need to develop renewable energy conversion technologies such as photovoltaics. Among these technologies, CsPbIBr2, an all‐inorganic lead halide‐based perovskite, has shown promise due to its thermal stability, phase stability, and ease of fab...

This study aims to optimize the influence of the inlet inclination angle on the Indoor Air Quality (IAQ), heat, and temperature distribution in mixed convection within a two-dimensional square cavity filled with an air-CO 2 mixture. The air-CO 2 mixture enters the cavity through two inlet openings positioned at the top wall, which is set at the amb...

This study aims to provide electricity to a remote village in the Union of Comoros that has been affected by energy problems for over 40 years. The study uses a 50 kW diesel generator, a 10 kW wind turbine, 1500 kW photovoltaic solar panels, a converter, and storage batteries as the proposed sources. The main objective of this study is to conduct a...

A fundamental requirement for analysing timber structures under fire is to consider the degradation of material properties with temperature. Therefore, the objective of this study is to propose a model that accounts for the variation of the thermo-physical properties, the development of char, and its evolution with temperature. This model integrate...

The mechanism of fluid and heat transmission within materials with complex porous structures has not yet been fully explored and understood using basic analytical techniques. Therefore, the lack of advanced equipment and techniques has left an important knowledge gap in explaining the complex mechanisms of fluid motion and heat transfer in complex...

Active cooling is quickly becoming a necessity in hot-dry climates prevailing across large sections of the world, where the equivalent solar temperature can rise above 70 °C in the summer. The cooling demand, within the structure depends on various components of building, some of which may be directly exposed to sunlight. While a few mitigating tec...

Aerodynamic drag is still one of the main challenges facing the automotive industry. The design engineers are trying to develop novel techniques that could help to control the flow and optimize the shape of a vehicle to make it able to increase the base pressure drag at the wake region. The pressure drag is one of the main contributors to the aerod...

The aim of this work is to investigate numerically the heat transfer inside a ventilated cavity filled with air-CO2 mixture. The air-CO2 mixture enters in the cavity with the temperature and the CO2 concentration equal to TC= 288 K and C0= 350 ppm respectively. A constant temperature was applied for all walls which is equal to the inlet temperature...

Solar energy has a great potential in many areas of industrial activity in Algeria. This is because most of Algeria has high levels of sustainable solar insulation. Unfortunately, few industries use solar energy for hot water generation, but some industrial processes require hot water at temperatures that can be easily obtained from solar thermal p...

Several rural regions located in Africa are experiencing recurrent and even permanent problems in terms of energy production, supply, and distribution to citizens. This study was conducted to investigate the relevance of the use of a new solar technology that is gradually responding in Europe and in industrialized countries. It is about the use of...

The objective of this work is to evaluate the performance in terms of cost and feasibility of an autonomous system of electric energy production. This system is composed of a PV field, a wind turbine, a diesel generator and a battery storage system to meet the electrical load demand and electrify a village of 800 peoples in a rural area in the Unio...

A dynamic model is presented for a chiller working with a composite adsorbent (silica activated carbon/CaCl 2)-water pair in a solar-biomass cooling installation. The main objective is determining a link between two possible evaporator configurations and the refrigerator's performances. The two considered evaporators work at different pressure leve...

A study is conducted on the performances of a solar powered continuous-adsorption refrigerator considering two particular days as references cases, namely, the summer solstice (June 21st) and the autumn equinox (September 21st). The cooling capacity, system performance coefficient and the daily rate of available cooling energy are assessed. The mai...

Green hydrogen in Morocco: state of play and prospects In order to meet the objectives of international agreements (including the Paris Agreement), a profound transformation of the global energy system is required. In this regard, governments, companies, energy organizations and research institutes are exploring the potential of green hydrogen to a...

The present study deals with heat storage in a solar-powered refrigeration system designed for indigenous products preservation in a cold room with a positive temperature. One of the key goals of this study is to show the importance of heat storage and the choice of the suitable coupling, position, and technology of thermal heat storage in these sy...

Phase change materials (PCMs) have high thermal inertia while hygroscopic materials have high hygric inertia. However, few studies have integrated the two materials and considered both hygrothermal behavior and energy performance. This study proposed a novel multilayer building envelope integrated by PCM and bio-based hygroscopic material (hemp con...

Located on the Southern shore of the Mediterranean, and at the same time at the gates of Europe and the North of the African continent, Morocco is distinguished by its richness in terms of climate and geography which constitute specific features providing a diversity of local materials required in the eco-construction and renovation. In this regard...

Located on the Southern shore of the Mediterranean, and at the same time at the gates of Europe and the North of the African continent, Morocco is distinguished by its richness in terms of climate and geography which constitute specific features providing a diversity of local materials required in the eco-construction and renovation. In this regard...

Notre avenir énergétique doit être basé sur le mix énergétique dominé par, une combinaison des énergies non polluantes ayant des ressources importantes. Les énergies renouvelables sont les meilleures candidats mais avec une production intermittente. L'objectif de ce travail est d'évaluer les performances en matière de coût et de faisabilité d'un sy...

The energy consumed in electric power and hot water in households is constantly increasing. The use of solar energy can provide a share in the energy mix. Several studies have been conducted on the performance of an individual forced circulation solar water heater for a family's needs. Currently, panels with hybrid photovoltaic-thermal (PVT) collec...

In this work, we present a feasibility study for a new hybrid power plant (PV-Wind-Diesel-Storage) directly connected to the electrical grid. Several simulations are performed to verify the performance of the hybrid system under different scenarios using real meteorological data. It is shown that the performances of the hybrid system connected to t...

Notre avenir énergétique doit être basé sur le mix énergétique dominé par, une combinaison des énergies non polluantes ayant des ressources importantes. Les énergies renouvelables sont les meilleures candidats mais avec une production intermittente. L’objectif de ce travail est d’évaluer les performances en matière de coût et de faisabilité d’un sy...

Hydrogen is one of the most promising energy vectors for reducing the carbon footprint of various sectors, such as electricity, industry, and transportation. To reach this goal, the water electrolysis process coupled with low-carbon power sources such as nuclear energy and renewable energy sources (wind, solar, geothermal, hydro-electric) to enable...

Goal: Don't miss the pleasure of our International Conference ICOME 22. Save the Date : MAY 22-25, 2022. BAKU - AZERBAIJAN. Special Topical School : Next November, at Lorraine University, Metz-France. ICOME22 updated Website: http://www.icome.ecam-epmi.fr/index.html Call for Papers : http://www.icome.ecam-epmi.fr/topics/index.html Submission i...

Phase change materials (PCMs) can improve indoor thermal comfort and reduce energy consumption, while bio-based concrete is an environment-friendly material that enables indoor humidity regulation and heat insulation. However, only a few studies have explored the integrated application of the two materials and comprehensively analyzed the energy an...

In the current work, we have investigated the flow past a semi-infinite porous solid media, after presenting a similarity transformation, governing equations mapped to a system of non-linear PDE. The flow of a dusty fluid and heat transfer through a porous medium have few applications, viz., the polymer processing unit of a geophysical, allied area...

This paper deals with the experimental investigation of hygrothermal behavior of wooden-frame building envelope. The experiment was based on in-situ monitoring of a full size experimental monozone house built at the University of Lorraine. Variations in temperature and relative humidity inside and outside the envelope were logged simultaneously wit...

In engineering, particularly in the field of energy and renewable energies, simulation is an efficient and economical means, commonly used to carry out preliminary or comparative studies, both during development (design) and during the normal operation of systems. Currently, several simulation tools, including HOMER, are used in academia. Thus, in...

The Comoros is an archipelago in the Indian Ocean located in the Mozambique Channel between the African continent and Madagascar. Geographically Comoros is composed of four islands: Grande Comores, Anjouan, Mohéli and Mayotte (under French administration). Apart from Mayotte, the others three independent islands commonly known as the Union of the C...

In the energy efficiency of buildings, the use of phase change materials (PCM) in the walls is an interesting solution. These intelligent materials offer important inertial capacities through storage by latent heat. PCM integration methods are multiple depending on the nature of the solution. However, the solutions based on direct integration into...

Bio-based materials have strong hygrothermal behavior and phase change materials (PCMs) have high thermal inertia, but they have usually been studied separately in most research. In this paper, the hygrothermal behavior of a multilayer building envelope integrating hemp lime concrete (HLC) and PCM was investigated at experimental level. The envelop...

A modelling approach based on the Substitutive Coefficients Network (SCN) is developed to predict the thermal behavior of a system in the dynamic state-space, without requiring knowledge of the thermal mass. The method can apply either to large-(building, combined solar systems, geothermal energy, and thermodynamic installations) or to small-scale...

The present work proposes a continuous solar adsorption refrigerator for a positive cold storage room of 231 m³ used for fruits and vegetables preservation and installed in the south of Tunisia. After the estimation of the storage room cooling load which is equal to 13 kW, a parametric study, aims to improve the performance of the chiller is done i...

Refrigeration by absorption is gaining more and more importance, especially in applications, where the source of energy used in the generator is renewable. Our work aimed at providing a cooling system adequate to the weather conditions in Tunisia as well as other Euro-Mediterranean regions. Furthermore, this cooling system is at the same time envir...

This paper exhibits the oscillatory characteristics of a free convective flow of nanofluids in horizontal concentric annuli of pilot dimensions to provide a mechanical solution against their particles settling which occurs by aggregation. These nanofluids are generated according to each class of particles that may exist with four types of industria...

Adsorption refrigeration technology such as green refrigeration method, following environmental protection and growing economic development, has received much attention. Which are considered more environmentally friendly alternatives to conventional compression refrigeration, since they can use refrigerants that do not contribute to ozone layer dep...

Advanced materials for energy harvesting, storage, sensing and environmental engineering II

In this paper, single-phase homogeneous nanofluid model is proposed to investigate the natural convection of magneto-hydrodynamic (MHD) flow of Newtonian CueH 2 O nanoli-quid in a baffled U-shaped enclosure. The Brinkman model and Wasp model are considered to measure the effective dynamic viscosity and effective thermal conductivity of the nanoliqu...

In this work, a numerical study is carried out to investigate the effect of Rayleigh number on mixed convection in a horizontal channel heated from below by sinusoidal temperature profile and cooled from above. The multiple relaxation time double population thermal lattice Boltzmann method (MRT-TLBM) is used. A validation of our code is done by com...

The use of Phase Change Materials (PCMs) in the building sector is an attractive solution contributing to the reduction of energy consumption as well as the improvement of the thermal comfort. To achieve this objective, it is required to study the complex phenomena of phase changes when PCM incorporated in different types of building materials. In...

This work focuses on the study of the averaged velocity and the turbulent intensity of the double jet impingement is used to separate two adjacent cellule. Numerical LES investigations are carried out in this study. A jet impingement against a flat and smooth surface without recirculation was used for this. The WALE (Wall Adapting Local Eddy) struc...

The interaction of natural convection with thermal radiation of black surfaces in a cylindrical enclosure filled with air has been numerically investigated. The steady-state continuity, Navier–Stokes and energy equations were discretized using the control volume method and solved numerically via the SIMPLER algorithm. Effects of Rayleigh number...

Natural convection of a magneto hydrodynamic nanofluid in a porous cavity in the presence of a magnetic field is investigated. The two vertical side walls are held isothermally at temperatures Th and Tc, while the horizontal walls of the outer cone are adiabatic. The governing equations obtained with the Boussinesq approximation are solved using Co...

The interaction of natural convection with thermal radiation of black surfaces in a cylindrical enclosure filled with air has been numerically investigated. The steady-state continuity, Navier–Stokes and energy equations were discretized using the control volume method and solved numerically via the SIMPLER algorithm. Effects of Rayleigh number (Ra...

In this work, a numerical study of mixed convection inside a horizontal channel with an open trapezoidal enclosure subjected to a discrete heat source in different locations is carried out. The heat source with the length of ε = 0.75, is maintained at a constant temperature. The air flow with a fixed velocity and a cold temperature enters the chann...

Special Issue in MATEC Web of Conferences, Volume 330, With great pleasure, I invite you to take a look at our New Special Issue (International Conference on Materials & Energy (ICOME’19)). More than 50 interesting papers have been published within. Link : https://www.matec-conferences.org/articles/matecconf/abs/2020/26/contents/contents.html E...

In the current work a continuous solar adsorption refrigerator is proposed for a positive cold storage room of 231 m 3 used for fruits and vegetables preservation and installed in the south of Tunisia. After the estimation of the climatic data and the storage room-cooling load for representative days in the months of March (spring), June (summer),...

Building-based active envelopes play an important role to reduce active heating supplies. Several techniques are developed to enhance the energy performances of active building envelopes; meanwhile, numerous numerical and mathematical models are also developed to conduct the performance analysis of these techniques. In this paper, we propose a stat...

The effect on the entropy production and MHD convection of the hybrid nanofluid Al2O3–Cu/water (water with Cu and Al2O3 nanoparticles) in a porous square enclosure is studied numerically via Galerkin finite element method. The enclosure used for flow and natural convection analysis is subjected to sinusoidal varying temperatures at the boundaries....

The main purpose of this study is to numerically investigate the Prandtl number effect on mixed convection in a horizontal channel heated from below using the thermal lattice Boltzmann method (TLBM). The double‐population model with two different lattices is used, in particular, the D2Q9 for the velocity field and D2Q5 for the thermal field. The de...

Panel Discussion on “Sustainable Development Goals”

Le présent papier traite l'alimentation en énergie électrique de «Dioro», une commune malienne située à 70 km du poste source le plus proche. L'alimentation est assurée via un système hybride composé principalement d'un générateur photovoltaïque, de deux générateurs thermiques et de batteries de stockage. Différents scenarii de fonctionnement du sy...