{"id":2394,"date":"2024-02-26T08:54:35","date_gmt":"2024-02-26T07:54:35","guid":{"rendered":"https:\/\/www.marani.pl\/?p=2394"},"modified":"2024-02-26T08:54:37","modified_gmt":"2024-02-26T07:54:37","slug":"impact-of-rotor-geometry-optimization-on-the-off-design-orc-turbine-performance","status":"publish","type":"post","link":"https:\/\/www.marani.pl\/en\/impact-of-rotor-geometry-optimization-on-the-off-design-orc-turbine-performance\/","title":{"rendered":"Impact of rotor geometry optimisation on the off-design ORC turbine performance"},"content":{"rendered":"<p><strong>AUTHORS: \u0141ukasz Witanowski, Piotr Klonowicz, Piotr Lampart, Piotr Klimaszewski, Tomasz Suchocki, \u0141ukasz J\u0119drzejewski, Dawid Zaniewski, Pawe\u0142 Zi\u00f3\u0142kowski<\/strong><\/p>\n\n\n\n<p id=\"abspara0010\">The paper describes the method of CFD-based Nelder-Mead optimisation of a 10 kW single-stage axial turbine operating in an ORC system working on R7100. The total-to-static isentropic efficiency is defined as an objective function.<\/p>\n\n\n\n<p id=\"abspara0015\">Multi-point linear regression is carried out to determine the significance of the objective function arguments and to pick up the set of particular variables and characteristic quantities (e.g. flow angles) which contribute most to improving the objective function value. This approach enables us to considerably reduce the number of optimised parameters and computational time needed for the optimisation process.<\/p>\n\n\n\n<p id=\"abspara0020\">Variable operating parameters of ORC power systems become an everyday occurrence, which makes the analysis of ORC turbines under variable operating parameters a critical part of the design. Therefore, the paper presents the influence of a single-criterion optimisation of the rotor geometry on the performance of the ORC turbine in a wide range of operating conditions. The results of optimization indicate that new geometry provides an approximately 5.5 pp. (percentage point) increase in total-to-static efficiency for the design point, and even larger improvements reaching 7 pp. For higher turbine loads, whereas for lower loads the efficiency improvements are at the level of 1.5-4 pp.<\/p>\n\n\n\n<p>The entire article can be read\u00a0<a href=\"https:\/\/www.marani.pl\/wp-content\/uploads\/2024\/02\/09_paper.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">here<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"<p>AUTHORS: \u0141ukasz Witanowski, Piotr Klonowicz, Piotr Lampart, Piotr Klimaszewski, Tomasz Suchocki, \u0141ukasz J\u0119drzejewski, Dawid Zaniewski, Pawe\u0142 Zi\u00f3\u0142kowski The paper describes [...].<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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v26.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Impact of rotor geometry optimization on the off-design ORC turbine performance -<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.marani.pl\/en\/impact-of-rotor-geometry-optimization-on-the-off-design-orc-turbine-performance\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Impact of rotor geometry optimization on the off-design ORC turbine performance -\" \/>\n<meta property=\"og:description\" content=\"AUTORZY: \u0141ukasz Witanowski, Piotr Klonowicz, Piotr Lampart, Piotr Klimaszewski, Tomasz Suchocki, \u0141ukasz J\u0119drzejewski, Dawid Zaniewski, Pawe\u0142 Zi\u00f3\u0142kowski The paper describes [&hellip;]\" \/>\n<meta property=\"og:url\" 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