Mechanical & Industrial Engineering: المرسلات الحديثة
السجلات المعروضة 341 -- 360 من 1454
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Review of innovative approaches of thermo-mechanical refrigeration systems using low grade heat
( Hindawi , 2020 , Article)Cooling and refrigeration systems consume around 17% of the world-wide electricity. Enhancing the performance of these systems, using renewable energy resources and waste heat recovered from industrial processes, will lead ... -
Study of recirculating water-based and carbon-based working fluids on the combustion flow field and the cycle performances of semi-closed CO2-capturing Brayton-derived cycles
( Elsevier , 2022 , Article)The transition into new power technologies that utilize fossil fuels with near zero emissions to the ambient is an urgent need to mitigate the worldwide environmental problems. In this study, detailed analyses of carbon-based ... -
Thermoeconomic and optimization analyses of direct oxy-combustion supercritical carbon dioxide power cycles with dry and wet cooling
( Elsevier , 2021 , Article)Oxy-combustion supercritical CO2 power cycles have the advantages of high-energy efficiency and near-zero pollutant emissions. Thus, these cycles are considered as an efficient way to reduce CO2 emissions while maintaining ... -
Flare gas-to-power by direct intercooled oxy-combustion supercritical CO2 power cycles
( 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 ... -
Direct-fired oxy-combustion supercritical-CO2 power cycle with novel preheating configurations -thermodynamic and exergoeconomic analyses
( Elsevier , 2021 , Article)Energy, exergy, and exergoeconomic analyses of novel direct-fired oxy-fuel combustion supercritical CO2 cycle with preheating and dry-cooling are introduced. Novelty aspects of the study include the preheating process ... -
Combined direct oxy-combustion and concentrated solar supercritical carbon dioxide power system—Thermo, exergoeconomic, and quadruple optimization analyses
( 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 thermoeconomic, exergoeconomic, and optimization analyses of direct oxy-combustion supercritical CO2 intercooled and reheated cycles under design and off-design conditions
( 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, ... -
Energy and exergy analyses of novel supercritical CO2 Brayton cycles driven by direct oxy-fuel combustor
( Elsevier , 2021 , Article)This study addresses major research gaps related to supercritical carbon dioxide (sCO2) power cycles including the shortcomings due to adding extra components, the high operating temperatures and the lack of studies on ... -
Techno-economic assessment of low-carbon hydrogen exports from the Middle East to the Asia-Pacific, and Europe
( Taylor & Francis , 2023 , Article)Hydrogen has the potential to play a major role in the global energy mix in the future and to achieve carbon-neutral targets by 2050. However, there is a lack of studies that investigate the economic feasibility of ... -
Accurate prediction of dynamic viscosity of polyalpha-olefin boron nitride nanofluids using machine learning
( 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 ... -
Off-design performance analysis of combined CSP power and direct oxy-combustion supercritical carbon dioxide cycles
( Elsevier , 2021 , Article)The solar power tower (SPT) has the potential to achieve high efficiency and large-scale power production due to its high achievable temperatures. However, thermal energy storage (TES) is required to solve the intermittency ... -
Energetic, economic, and environmental analysis of solid oxide fuel cell-based combined cooling, heating, and power system for cancer care hospital
( 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 on the performance of a novel thermo-mechanical refrigeration system driven by an expander-compressor unit
( Elsevier , 2022 , Article)Operating thermos-mechanical refrigeration (TMR) ejector-based and organic Rankine cycle-based refrigeration systems at ultra-low temperature heat source (60 °C to 100 °C) is challenging and limited by their low coefficient ... -
Experimental investigations on the performance of a thermo-mechanical refrigeration system utilizing ultra-low temperature waste heat sources
( Elsevier , 2023 , Article)Experimental studies that investigate the utilization of ultra-low temperature (between 48 °C and 120 °C) waste heat, which forms 25 % of the global unrecovered waste heat, to drive thermal cooling systems are rare. Thus, ... -
Carbon Dioxide Transport Pipeline Systems: Overview of Technical Characteristics, Safety, Integrity and Cost, and Potential Application of Digital Twin
( 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 ... -
A novel hydrogen liquefaction process using dual mixed cryogenic refrigeration system: Energy, exergy, and economic analysis
( Elsevier , 2024 , Article)In conventional hydrogen liquefaction plants, the liquefaction process consumes high portion of about 30 % of the liquid hydrogen (LH2) energy content. In addition, existing LH2 technology uses pure or single mixed ... -
Novel integration between propane pre-cooled mixed refrigerant LNG process and concentrated solar power system based on supercritical CO2 power cycle
( Elsevier , 2023 , Article)Liquefaction of natural gas (LNG) is an energy-intensive process with large CO2 emissions. This study addresses these problems by introducing a novel hybrid integration between the propane pre-cooled mixed-refrigerant ... -
Theoretical and experimental study on the selection of pure and mixed refrigerants for a power-cooling system driven by ultra-low-grade heat
( Elsevier , 2023 , Article)This study theoretically and experimentally evaluates the performance of a system that combines an organic Rankine cycle (ORC) and a vapor compression cycle (VCC) driven by ultra-low-grade heat (ULGH). A systematic method ... -
Systematic thermodynamic approach for designing mixed refrigerants used in hydrogen precooling process
( Elsevier , 2022 , Article)Designing an optimal mixed-refrigerant (MR) composition for any cryogenic refrigeration process plays a key role in the process overall performance. However, the existing approaches of developing mixed-refrigerants for ... -
Environmental impact of fuel spills on land
(2006 , Conference)This study considers the toxicity and flammability of emitted fuel vapor from un-ignited pools of spilled chemicals on land. It also estimates the thermal radiation levels emitted from such pools in case they catch fire. ...
