Performance enhancement of three-stage axial turbine for Clean Organic Rankine Cycle system driven by low-temperature heat source

High performances of Organic Rankine Cycle (ORC) system are widely used in various industrial applications. Axial flow turbine at low temperature heat source is of major importance in some processes. This work focuses on numerical analyses to improve high efficiency of a small Organic Rankine Cycle...

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Autores principales:	T.T. Naas, M. Telha, L. Laib, H. Shakhawat, A. Bacha, A. Taibaoui, A.Z. Naas, D. Aissaoui
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Three-stage axial turbine Turbine efficiency,Low temperature heat sources Cleaning Organic Ranking Cycle Renewable energy sources TJ807-830 Environmental engineering TA170-171
Acceso en línea:	https://doaj.org/article/cc51ba6de0884eb883158e850a22aee3
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id	oai:doaj.org-article:cc51ba6de0884eb883158e850a22aee3
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spelling	oai:doaj.org-article:cc51ba6de0884eb883158e850a22aee32021-11-12T04:49:02ZPerformance enhancement of three-stage axial turbine for Clean Organic Rankine Cycle system driven by low-temperature heat source2666-790810.1016/j.clet.2021.100336https://doaj.org/article/cc51ba6de0884eb883158e850a22aee32021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2666790821002962https://doaj.org/toc/2666-7908High performances of Organic Rankine Cycle (ORC) system are widely used in various industrial applications. Axial flow turbine at low temperature heat source is of major importance in some processes. This work focuses on numerical analyses to improve high efficiency of a small Organic Rankine Cycle (ORC) axial turbine using n-pentane as a working fluid. Different turbine stages are proposed to ensure maximum performance for the Organic Rankine Cycle (ORC) application. In order to characterize the hydrodynamic and thermodynamic performances, 3D RANS computations are suggested for five different rotational speeds(1000 rpm, 2000 rpm, 4000 rpm, 8000 rpm, and 16,000 rpm), and four mass flow rates ranging from 0.2 to 0.5 kg/s with inlet temperature of 365 K.The results indicate that the highest turbine efficiency of 87% in the two-stage turbine with rotational speed 16,000 rpm and inlet mass flow rate 0.2 kg/s, where the mass flow rate 0.5 kg/s gives highest power output value of 10,751W.Theturbine efficiency and power output are 88.03% and 12,950 W in the steady state for three-stage turbine configuration. The transient computational process leads to the maximum values of 88% and 12,932Wforturbine efficiency and power output. These results highlight the potential of using micro-three-stage axial turbine of Organic Rankine Cycle (ORC) systems for the exchange of low temperature heat sources.T.T. NaasM. TelhaL. LaibH. ShakhawatA. BachaA. TaibaouiA.Z. NaasD. AissaouiElsevierarticleThree-stage axial turbineTurbine efficiency,Low temperature heat sourcesCleaning Organic Ranking CycleRenewable energy sourcesTJ807-830Environmental engineeringTA170-171ENCleaner Engineering and Technology, Vol 5, Iss , Pp 100336- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Three-stage axial turbine Turbine efficiency,Low temperature heat sources Cleaning Organic Ranking Cycle Renewable energy sources TJ807-830 Environmental engineering TA170-171
spellingShingle	Three-stage axial turbine Turbine efficiency,Low temperature heat sources Cleaning Organic Ranking Cycle Renewable energy sources TJ807-830 Environmental engineering TA170-171 T.T. Naas M. Telha L. Laib H. Shakhawat A. Bacha A. Taibaoui A.Z. Naas D. Aissaoui Performance enhancement of three-stage axial turbine for Clean Organic Rankine Cycle system driven by low-temperature heat source
description	High performances of Organic Rankine Cycle (ORC) system are widely used in various industrial applications. Axial flow turbine at low temperature heat source is of major importance in some processes. This work focuses on numerical analyses to improve high efficiency of a small Organic Rankine Cycle (ORC) axial turbine using n-pentane as a working fluid. Different turbine stages are proposed to ensure maximum performance for the Organic Rankine Cycle (ORC) application. In order to characterize the hydrodynamic and thermodynamic performances, 3D RANS computations are suggested for five different rotational speeds(1000 rpm, 2000 rpm, 4000 rpm, 8000 rpm, and 16,000 rpm), and four mass flow rates ranging from 0.2 to 0.5 kg/s with inlet temperature of 365 K.The results indicate that the highest turbine efficiency of 87% in the two-stage turbine with rotational speed 16,000 rpm and inlet mass flow rate 0.2 kg/s, where the mass flow rate 0.5 kg/s gives highest power output value of 10,751W.Theturbine efficiency and power output are 88.03% and 12,950 W in the steady state for three-stage turbine configuration. The transient computational process leads to the maximum values of 88% and 12,932Wforturbine efficiency and power output. These results highlight the potential of using micro-three-stage axial turbine of Organic Rankine Cycle (ORC) systems for the exchange of low temperature heat sources.
format	article
author	T.T. Naas M. Telha L. Laib H. Shakhawat A. Bacha A. Taibaoui A.Z. Naas D. Aissaoui
author_facet	T.T. Naas M. Telha L. Laib H. Shakhawat A. Bacha A. Taibaoui A.Z. Naas D. Aissaoui
author_sort	T.T. Naas
title	Performance enhancement of three-stage axial turbine for Clean Organic Rankine Cycle system driven by low-temperature heat source
title_short	Performance enhancement of three-stage axial turbine for Clean Organic Rankine Cycle system driven by low-temperature heat source
title_full	Performance enhancement of three-stage axial turbine for Clean Organic Rankine Cycle system driven by low-temperature heat source
title_fullStr	Performance enhancement of three-stage axial turbine for Clean Organic Rankine Cycle system driven by low-temperature heat source
title_full_unstemmed	Performance enhancement of three-stage axial turbine for Clean Organic Rankine Cycle system driven by low-temperature heat source
title_sort	performance enhancement of three-stage axial turbine for clean organic rankine cycle system driven by low-temperature heat source
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/cc51ba6de0884eb883158e850a22aee3
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Performance enhancement of three-stage axial turbine for Clean Organic Rankine Cycle system driven by low-temperature heat source

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