{"id":3992,"date":"2021-09-22T05:44:23","date_gmt":"2021-09-22T05:44:23","guid":{"rendered":"https:\/\/zuccatoenergia.it\/?p=3992"},"modified":"2025-07-31T14:55:32","modified_gmt":"2025-07-31T12:55:32","slug":"comparison-of-four-types-of-radial-turbines-for-a-250kw-orc-power-installation","status":"publish","type":"post","link":"https:\/\/zuccatoenergia.it\/it\/comparison-of-four-types-of-radial-turbines-for-a-250kw-orc-power-installation\/","title":{"rendered":"Comparison of four types of radial turbines for a 250kw ORC power installation"},"content":{"rendered":"<h3 style=\"text-align: center;\"><strong>COMPARISON OF FOUR TYPES OF RADIAL TURBINES FOR A 250KW ORC POWER INSTALLATION<\/strong><\/h3>\n<p>&nbsp;<\/p>\n<p style=\"text-align: center;\">Maksim Smirnov, Natalia Kuklina, Aleksandr Sebelev, Alessandro Zuccato and Nikolay Zabelin<\/p>\n<p style=\"text-align: center;\">Peter the Great St. Petersburg Polytechnic University (SPbPU), St. Petersburg, Russia<\/p>\n<p style=\"text-align: center;\">Zuccato Energia Srl, via della Consortia 2, Verona, Italy<\/p>\n<p style=\"text-align: center;\">*Corresponding Author: m.smirnov.turbo@gmail.com<\/p>\n<h4><\/h4>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<h4 style=\"text-align: center;\">ABSTRACT<\/h4>\n<p>&nbsp;<\/p>\n<p style=\"text-align: center;\">This paper seeks to compare four solutions for an <strong>ORC power plant<\/strong> rated at <strong>250 kW<\/strong> running with R1233zdE as the working fluid: a radial inflow \u2013 axial outflow turbine with a typical reaction about of 0.5, a radial centripetal turbines with reaction of 0.36 and 0.05 and an impulse centrifugal turbine. All these turbines are single stage and high-speed. Steady state CFD simulations were carried out to assess the performance at the design and partial load as well as the axial force values.<\/p>\n<p style=\"text-align: center;\">As expected, the <strong>radial inflow turbine has exhibited the best performance<\/strong>, followed then by the centripetal reaction turbine with 4% of a relative efficiency decrease. Both impulse turbines have shown 11% less efficiency at the design point comparing to the radial inflow stage. Under the partial load, the turbines have exhibited different trends of their efficiency behaviour.<\/p>\n<p style=\"text-align: center;\"><em>In particular, with a power output reduction from 100 to 40%, the radial inflow and the centripetal turbine have lost 7% of their efficiency, while the centripetal impulse turbine 20% and the centrifugal impulse just 5%.<\/em><br \/>\nThe axial force of the radial inflow and both centripetal stages may be balanced to reach a desired value by means of the modification of the disk back seal. Instead, the centrifugal impulse stage fails to provide such a balancing, which results in high values of the axial thrust even despite an impulse nature of this stage.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>COMPARISON OF FOUR TYPES OF RADIAL TURBINES FOR A 250KW ORC POWER INSTALLATION &nbsp; Maksim Smirnov, Natalia Kuklina, Aleksandr Sebelev, Alessandro Zuccato and Nikolay Zabelin Peter the Great St. Petersburg Polytechnic University (SPbPU), St. Petersburg, Russia [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":3998,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[110],"tags":[],"translation":{"provider":"WPGlobus","version":"3.0.2","language":"it","enabled_languages":["ro","it","en"],"languages":{"ro":{"title":true,"content":false,"excerpt":false},"it":{"title":true,"content":true,"excerpt":false},"en":{"title":true,"content":true,"excerpt":false}}},"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.5 - 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