Search Results - "Sayma, Abdulnaser I."

Power Transmission and Control in Microturbines’ Electronics: A Review by Abuhaiba, Ahmad, Assadi, Mohsen, Apostolopoulou, Dimitra, Al-Zaili, Jafar, Sayma, Abdulnaser I.

“…When the shaft rotates in microturbines, the rotational movement is converted to electrical power. This is achieved through a permanent magnet synchronous…”
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A Generalised Assessment of Working Fluids and Radial Turbines for Non-Recuperated Subcritical Organic Rankine Cycles by White, Martin, Sayma, Abdulnaser

“…The aim of this paper is to conduct a generalised assessment of both optimal working fluids and radial turbine designs for small-scale organic Rankine cycle…”
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Heat Transfer Effect on Micro Gas Turbine Performance for Solar Power Applications by Khader, Mahmoud A., Ghavami, Mohsen, Al-Zaili, Jafar, Sayma, Abdulnaser I.

“…This paper presents an experimentally validated computational study of heat transfer within a compact recuperated Brayton cycle microturbine. Compact…”
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Review of supercritical CO2 technologies and systems for power generation by White, Martin T., Bianchi, Giuseppe, Chai, Lei, Tassou, Savvas A., Sayma, Abdulnaser I.

“…Thermal-power cycles operating with supercritical carbon dioxide (sCO2) could have a significant role in future power generation systems with applications…”
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Design of a 130 MW Axial Turbine Operating with a Supercritical Carbon Dioxide Mixture for the SCARABEUS Project by Abdeldayem, Abdelrahman S., Salah, Salma I., Aqel, Omar A., White, Martin T., Sayma, Abdulnaser I.

“…Supercritical carbon dioxide (sCO2) can be mixed with dopants such as titanium tetrachloride (TiCl4), hexafluoro-benzene (C6F6), and sulphur dioxide (SO2) to…”
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A new method to identify the optimal temperature of latent-heat thermal-energy storage systems for power generation from waste heat by White, Martin T., Sayma, Abdulnaser I.

“…•Novel method proposed to identify optimal TES systems for waste-heat recovery.•Provides fast performance estimates based only on heat source and heat…”
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A methodology for techno-economic and operation strategy optimisation of micro gas turbine-based solar powered dish-engine systems by Ghavami, Mohsen, Al-Zaili, Jafar, Sayma, Abdulnaser I.

“…This paper focuses on the optimisation of small-scale micro gas turbines totally powered by the concentrated solar power to generate electricity in the range…”
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A comparison of axial turbine loss models for air, sCO2 and ORC turbines across a range of scales by Salah, Salma I., White, Martin T., Sayma, Abdulnaser I.

“…Loss models are used to evaluate the aerodynamic performance of axial turbines at the preliminary design stage. The commonly used loss models were derived for…”
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Mean-Line Design of a Supercritical CO2 Micro Axial Turbine by Salah, Salma I., Khader, Mahmoud A., White, Martin T., Sayma, Abdulnaser I.

“…Supercritical carbon dioxide (sCO2) power cycles are promising candidates for concentrated-solar power and waste-heat recovery applications, having advantages…”
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Simultaneous Cycle Optimization and Fluid Selection for ORC Systems Accounting for the Effect of the Operating Conditions on Turbine Efficiency by White, Martin T., Sayma, Abdulnaser I.

“…The design of optimal organic Rankine cycle (ORC) systems requires the simultaneous identification of the optimal cycle architecture, operating conditions and…”
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Improving the economy-of-scale of small organic rankine cycle systems through appropriate working fluid selection by White, Martin, Sayma, Abdulnaser I.

“…•Novel system model coupling turbine and ORC system performance.•Contour plots to characterise working fluid and turbine performance.•Changing working fluid…”
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Residential Micro-CHP system with integrated phase change material thermal energy storage by Khader, Mahmoud A., Ghavami, Mohsen, Al-Zaili, Jafar, Sayma, Abdulnaser I.

“…This paper presents an analysis and experimental investigation of the effect of integrating Phase Change Material (PCM) within a heat exchanger within a Micro…”
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Off-design performance assessment of an axial turbine for a 100 MWe concentrated solar power plant operating with CO2 mixtures by Salah, Salma I., Abdeldayem, Abdelrahman S., White, Martin T., Sayma, Abdulnaser I.

“…This paper presents an investigation of the aerodynamic performance of a 130 MW axial turbine operating with a CO2/SO2 mixture using a mean-line off-design…”
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Making the case for cascaded organic Rankine cycles for waste-heat recovery by White, Martin T., Read, Matthew G., Sayma, Abdulnaser I.

“…The design of single-stage organic Rankine cycle (ORC) systems can be challenging owing to large volumetric expansion ratios and sub-atmospheric condensation…”
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Axial turbine flow path design for concentrated solar power plants operating with CO2 blends by Salah, Salma I., Crespi, Francesco, White, Martin T., Muñoz, Antonio, Paggini, Andrea, Ruggiero, Marco, Sánchez, David, Sayma, Abdulnaser I.

“…The utilisation of certain blends based on supercritical CO2 (sCO2), namely CO2/TiCl4, CO2/C6F6 and CO2/SO2, have been found to be promising for enhancing the…”
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Review of supercritical CO 2 technologies and systems for power generation by White, Martin T., Bianchi, Giuseppe, Chai, Lei, Tassou, Savvas A., Sayma, Abdulnaser I.

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A review of compressors for high temperature heat pumps by El Samad, Tala, Żabnieńska-Góra, Alina, Jouhara, Hussam, Sayma, Abdulnaser I.

“…•Primary challenge in achieving required high temperatures and high lifts in heat pumps is compression.•Experience from refrigeration industry enabled use of…”
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A comparison of axial turbine loss models for air, sCO 2 and ORC turbines across a range of scales by Salah, Salma I., White, Martin T., Sayma, Abdulnaser I.

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