{"id":5833,"date":"2025-08-01T14:51:04","date_gmt":"2025-08-01T09:21:04","guid":{"rendered":"https:\/\/study.madeeasy.in\/?p=5833"},"modified":"2025-08-28T17:46:57","modified_gmt":"2025-08-28T12:16:57","slug":"steam-turbines","status":"publish","type":"post","link":"https:\/\/www.madeeasy.in\/study\/me\/thermodynamics\/steam-turbines","title":{"rendered":"Steam Turbines"},"content":{"rendered":"<h2>Impulse Turbine<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-5834 size-full\" src=\"https:\/\/study.madeeasy.in\/wp-content\/uploads\/2025\/08\/impulse-turbine.jpg\" alt=\" Impulse Turbine \" width=\"368\" height=\"376\" srcset=\"https:\/\/www.madeeasy.in\/study\/wp-content\/uploads\/2025\/08\/impulse-turbine.jpg 368w, https:\/\/www.madeeasy.in\/study\/wp-content\/uploads\/2025\/08\/impulse-turbine-294x300.jpg 294w\" sizes=\"auto, (max-width: 368px) 100vw, 368px\" \/><\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_79_1 ez-toc-wrap-left counter-hierarchy ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.madeeasy.in\/study\/me\/thermodynamics\/steam-turbines\/#Pressure-compounding\" >Pressure compounding<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.madeeasy.in\/study\/me\/thermodynamics\/steam-turbines\/#Velocity-compounding\" >Velocity compounding<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.madeeasy.in\/study\/me\/thermodynamics\/steam-turbines\/#Reaction-Turbine\" >Reaction Turbine<\/a><\/li><\/ul><\/nav><\/div>\n<h3><span class=\"ez-toc-section\" id=\"Pressure-compounding\"><\/span>Pressure compounding<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>where, N = Nozzle,<\/p>\n<p>MB = Moving blade<\/p>\n<p>The pressure drop occurs only in the nozzle. There is no pressure drop while steam flows through the blades.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Velocity-compounding\"><\/span>Velocity compounding<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>where, SB = Stationary blade<\/p>\n<p>All the pressure drop and enthalpy drop of steam takes place in a single row of nozzles.<\/p>\n<p>(\u0394H)stage = (\u0394H)total \/\u00a0 Total number of stage<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Reaction-Turbine\"><\/span>Reaction Turbine<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li>Optimum velocity ratio, \u03c1 = cos \u03b1<\/li>\n<li>Maximum efficiency, \u03b7max = 2cos2\u03b1 \/ 1+cos2\u03b1<\/li>\n<li>Degree of reaction, R = Enthalpy drop in moving blade \/ Total enthalpy drop<\/li>\n<\/ul>\n<p><strong>Velocity &amp; Pressure variation in reaction turbine<\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-5835 size-full\" src=\"https:\/\/study.madeeasy.in\/wp-content\/uploads\/2025\/08\/Velocity.jpg\" alt=\"Velocity\" width=\"406\" height=\"196\" srcset=\"https:\/\/www.madeeasy.in\/study\/wp-content\/uploads\/2025\/08\/Velocity.jpg 406w, https:\/\/www.madeeasy.in\/study\/wp-content\/uploads\/2025\/08\/Velocity-300x145.jpg 300w\" sizes=\"auto, (max-width: 406px) 100vw, 406px\" \/><\/p>\n<p style=\"text-align: center;\"><a class=\"btn btn-danger\" role=\"button\" href=\"https:\/\/study.madeeasy.in\/me\/thermodynamics\/second-law-of-thermodynamics\/\" target=\"_blank\" rel=\"noopener\">&lt;&lt; Previous<\/a> | <a class=\"btn btn-success\" role=\"button\" href=\"https:\/\/study.madeeasy.in\/me\/thermodynamics\/zeroth-law-of-thermodynamics\/\" target=\"_blank\" rel=\"noopener\"> Next &gt;&gt;<\/a><br \/>\n<strong> Must Read: <\/strong> <a href=\"https:\/\/study.madeeasy.in\/subjects\/what-is-thermodynamics\/\" target=\"_blank\" rel=\"noopener\"><strong>What is thermodynamics in Mechanical Engineering?<\/strong><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Impulse Turbine Pressure compounding where, N = Nozzle, MB = Moving blade The pressure drop occurs only in the nozzle.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1701,10],"tags":[1703,1702,311],"class_list":["post-5833","post","type-post","status-publish","format-standard","hentry","category-thermodynamics","category-me","tag-impulse-turbine","tag-reaction-turbine","tag-velocity"],"_links":{"self":[{"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/posts\/5833","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/comments?post=5833"}],"version-history":[{"count":0,"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/posts\/5833\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/media?parent=5833"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/categories?post=5833"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/tags?post=5833"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}