تصفح حسب المؤلف "Sleiti, Ahmad K."
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Accurate prediction of dynamic viscosity of polyalpha-olefin boron nitride nanofluids using machine learning
AbuShanab, Yazeed; Al-Ammari, Wahib A.; Gowid, Samer; Sleiti, Ahmad K. ( Elsevier , 2023 , Article)This study focuses on predicting the dynamic viscosity of nanofluids, specifically Polyalpha-Olefin-hexagonal boron nitride (PAO-hBN) using machine learning models. The primary goal of this research is to assess and contrast ... -
Analysis of novel regenerative thermo-mechanical refrigeration system integrated with isobaric engine
Sleiti, Ahmad K.; Al-Ammari, Wahib A.; Al-Khawaja, Mohammed ( American Society of Mechanical Engineers , 2021 , Article)Refrigerants of the conventional cooling systems contribute to global warming and ozone depletion significantly, therefore it is necessary to develop new cooling systems that use renewable energy resources and waste heat ... -
Application of Fatty Acid Based Phase-Change Material to Reduce Energy Consumption from Roofs of Buildings
Sleiti, Ahmad K.; Naimaster, Edward J. ( American Society of Mechanical Engineers (ASME) , 2016 , Article)Buildings account for a significant portion of the total energy consumption in the U.S., especially the energy-inefficient commercial building sector. As part of the future path toward realizing net zero energy buildings, ... -
Carbon Dioxide Transport Pipeline Systems: Overview of Technical Characteristics, Safety, Integrity and Cost, and Potential Application of Digital Twin
Sleiti, Ahmad K.; Al-Ammari, Wahib A.; Vesely, Ladislav; Kapat, Jayanta S. ( American Society of Mechanical Engineers , 2022 , Article)Carbon dioxide transport from capture to utilization or storage locations plays key functions in carbon capture and storage systems. In this study, a comprehensive overview and technical guidelines are provided for CO2 ... -
Combined direct oxy-combustion and concentrated solar supercritical carbon dioxide power system—Thermo, exergoeconomic, and quadruple optimization analyses
Sleiti, Ahmad K.; Al-Ammari, Wahib A. ( Hindawi , 2022 , Article)For the global future energy systems, concentrated solar power (CSP) and direct CO2 capture systems are of the most important key technologies, however, each of these systems has shortcomings. This study addresses the solar ... -
Comprehensive assessment and evaluation of correlations for gas-oil ratio, oil formation volume factor, gas viscosity, and gas density utilized in gas kick detection
Sleiti, Ahmad K.; Al-Ammari, Wahib A.; Abdelrazeq, Motasem; El-Naas, Muftah; Rahman, Mohammad Azizur; Barooah, Abinash; Hasan, Rashid; Manikonda, Kaushik... more authors ... less authors ( Elsevier B.V. , 2021 , Article)For reliable gas kick detection modeling and simulation, the PVT properties of the gas must be predicted accurately. The property correlations available in open literature are developed mostly for certain regions and ... -
Comprehensive thermoeconomic, exergoeconomic, and optimization analyses of direct oxy-combustion supercritical CO2 intercooled and reheated cycles under design and off-design conditions
Al-Ammari, Wahib A.; Sleiti, Ahmad K. ( Wiley-Blackwell , 2022 , Article)This study presents comprehensive energetic, exergetic, exergoeconomic, and economic (4E) performance analyses for four direct oxy-combustion (DOC) supercritical carbon dioxide (sCO2) power cycles at design, off-design, ... -
Dataset for transient 3D simulations of turbulent premixed flames of Gas-to-Liquid (GTL) fuel
Abdellatif M., Sadeq; Ahmed, Samer F.; Sleiti, Ahmad K. ( Elsevier , 2021 , Other)A fan-stirred combustion vessel is used to study the premixed turbulent combustion of diesel, Gas to Liquids (GTL) and 50/50 diesel-GTL and to generate these datasets. A numerical simulation approach is implemented for ... -
Development of Machine Learning Models for Studying the Premixed Turbulent Combustion of Gas-To-Liquids (GTL) Fuel Blends
Sadeq, Abdellatif M.; Moghaddam, Amin Hedayati; Sleiti, Ahmad K.; Ahmed, Samer F. ( Springer Nature , 2024 , Article)Studying the spatial and temporal evolution in turbulent flames represents one of the most challenging problems in the combustion community. Based on previous 3D numerical analyses, this study aims to develop data-driven ... -
Digital Twin for Power Plants, Energy Savings and other Complex Engineering Systems
Sleiti, Ahmad K.; Kapat, Jayanta S.; Vesely, Ladislav; Al-Khawaja, Mohammed ( Qatar University Press , 2021 , Poster)Digital Twin (DT) is a digital representation of a machine, service, or production system that consists of models, information, and data used to characterize properties, conditions, and behavior of the system. Renewable ... -
Early gas kick detection in vertical wells via transient multiphase flow modelling: A review
Sleiti, Ahmad K.; Takalkar, Gorakshnath; El-Naas, Muftah H.; Hasan, Abu Rashid; Rahman, Mohammad Azizur ( Elsevier B.V. , 2020 , Article Review)Gas influx from reservoir into the wellbore during drilling, tripping, or other operations, is a hazard. In the early stages, the influx may be nearly undetectable, but the kick can rapidly change from a seemingly steady ... -
Energetic, economic, and environmental analysis of solid oxide fuel cell-based combined cooling, heating, and power system for cancer care hospital
Sleiti, Ahmad K.; Al-Ammari, Wahib A.; Arshad, Raiha; El Mekkawy, Tarek ( Tsinghua University , 2022 , Article)In this study, energetic, economic, and environmental analysis of solid oxide fuel cell-based combined cooling, heating, and power (SOFC-CCHP) system is proposed for a cancer care hospital building. The energy required for ... -
EXPERIMENTAL INVESTIGATION AND HEAT TRANSFER ANALYSIS OF INNOVATIVE THERMAL MECHANICAL REFRIGERATION SYSTEM COMPARED TO ELECTRIC COMPRESSOR
Sleiti, Ahmad K.; Al-Ammari, Wahib A.; Al-Khawaja, Mohammed ( American Society of Mechanical Engineers (ASME) , 2022 , Conference Paper)The current electric refrigeration and air condition systems are major causes for ozone depletion and global warming. These systems consume large percent of the worldwide gross production of electricity (around 17%). ... -
Experimental Investigation of Foam drilling fluid using Visualization Technique
Barooah, Abinash; Khan, Muhammad Saad; Sleiti, Ahmad K.; Abdelrazeq, Motasem; Rahman, Mohammad Azizur; Hassan, Ibrahim; Hasan, Rashid; Hascakir, Berna... more authors ... less authors ( Qatar University Press , 2021 , Poster)Cutting transport is one of the major factors, which affects the cost, time and quality of drilling operations. Over the years, as the number of directional wells have increased to improve the productivity, it has been ... -
Experimental Investigation of Innovative Thermal Mechanical Refrigeration System
Sleiti, Ahmad K.; Al-Ammari, Wahib A.; Al-Khawaja, Mohammed ( Qatar University Press , 2021 , Poster)The current electrical refrigeration and air condition systems are considered as one of the major sources for ozone depletion and global warming problems. Furthermore, they consume a large percentage of the worldwide gross ... -
Flare gas-to-power by direct intercooled oxy-combustion supercritical CO2 power cycles
Sleiti, Ahmad K.; Al-Ammari, Wahib A.; Aboueata, Khaled M. ( Elsevier , 2021 , Article)With more than 150 billion m3 of gases annually flared around the world, gas flaring is a major source of greenhouse gas emissions that contaminates the environment with more than 400 Mt CO2/year. Therefore, utilizing the ... -
Heat transfer analysis of regenerative thermo-mechanical refrigeration system
Sleiti, Ahmad K.; Al- Khawaja, Mohammed ( American Society of Mechanical Engineers (ASME) , 2020 , Conference Paper)Refrigeration systems contribute to the critical environmental concerns including global warming and ozone depletion. It is necessary to develop new systems that use renewable energy resources and waste heat to perform the ... -
Integrated supercritical co2 power cycle with concentrated solar power tower with 50mw power capacity
Gamil, Ahmed Idris Ibrahim (2021 , Master Thesis)As a part of the world's efforts to mitigate the impact of global warming via carbon neutrality plan by 2050, a novel supercritical carbon dioxide (sCO2) power cycle is presented that is integrated with concentrated solar ... -
Novel dual-mixed refrigerant precooling process for high capacity hydrogen liquefaction plants with superior performance
Sleiti, Ahmad K.; Al-Ammari, Wahib A.; Ghani, Saud ( Elsevier , 2023 , Article)Liquid hydrogen is a superior alternative for the current energy storage methods and energy carriers as it has higher energy density and cleanliness. However, hydrogen liquefaction is an energy-intensive process. In ... -
Novel solar driven cooling system integrated with solar still system
Sleiti, Ahmad K.; Al-Ammari, Wahib A.; Al-Khawaja, Mohammed ( Qatar University Press , 2020 , Poster)Novel integrated solar cooling and solar distillation system is introduced to meet the high cooling and fresh water demands in hot and arid regions such as Qatar. The system is composed of a solar-driven ejector cooling ...