{"id":1287,"date":"2020-08-10T09:00:51","date_gmt":"2020-08-10T17:00:51","guid":{"rendered":"https:\/\/www.linquip.com\/blog\/?p=1287"},"modified":"2023-03-12T08:50:30","modified_gmt":"2023-03-12T16:50:30","slug":"why-vacuum-is-maintained-in-condenser","status":"publish","type":"post","link":"https:\/\/www.linquip.com\/blog\/why-vacuum-is-maintained-in-condenser\/","title":{"rendered":"Why vacuum is maintained in condenser: an easy-to-understand guide"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-grey 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-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.linquip.com\/blog\/why-vacuum-is-maintained-in-condenser\/#Vacuum_Importance_in_Condensing_System\" >Vacuum Importance in Condensing System<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.linquip.com\/blog\/why-vacuum-is-maintained-in-condenser\/#Vacuum-producing_Device_Types\" >Vacuum-producing Device Types<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.linquip.com\/blog\/why-vacuum-is-maintained-in-condenser\/#Vacuum_System_Application\" >Vacuum System Application<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.linquip.com\/blog\/why-vacuum-is-maintained-in-condenser\/#What_Will_Happen_If_Vacuum_Is_Increased_or_Removed\" >What Will Happen If Vacuum Is Increased or Removed?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.linquip.com\/blog\/why-vacuum-is-maintained-in-condenser\/#What_Is_the_Vacuum_Efficiency_of_the_Condenser\" >What Is the Vacuum Efficiency of the Condenser?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.linquip.com\/blog\/why-vacuum-is-maintained-in-condenser\/#Download_Why_Vacuum_Is_Maintained_in_Condenser_PDF\" >Download Why Vacuum Is Maintained in Condenser PDF<\/a><\/li><\/ul><\/nav><\/div>\n<p>A condenser is a device or unit used to condense a gaseous substance into a liquid state through cooling. In so doing, the latent heat is released by the substance and transferred to the surrounding environment. Now you may wonder what the point of maintaining vacuum in condensers is. In this article, Linquip has provided thorough information about the reason why vacuum is maintained in condensers.<\/p>\n<p><span style=\"font-weight: 400;\">We offer a wide range of valuable information about condensers at Linquip. For any questions or concerns regarding the equipment &amp; devices used with condensers, don&#8217;t hesitate to contact Linquip. It is best to first read Linquip&#8217;s article &#8220;<\/span><a href=\"https:\/\/www.linquip.com\/industrial-directories\/324\/hvac-condensers\"><b>What Is a Condenser?<\/b><\/a><span style=\"font-weight: 400;\">&#8221; in order to gain a greater understanding of these devices and equipment.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Join Linquip as a<\/span><a href=\"https:\/\/www.linquip.com\/experts?category_id=324\"> <b>Condenser Expert<\/b><\/a><span style=\"font-weight: 400;\"> and take advantage of all the features Linquip offers. Moreover, are you interested in submitting a guest post to the site? To see the Linquip guest content submission page, click<\/span><a href=\"https:\/\/www.linquip.com\/blog\/user-guest-post\"> <b>here<\/b><\/a><span style=\"font-weight: 400;\">.<\/span><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Vacuum_Importance_in_Condensing_System\"><\/span>Vacuum Importance in Condensing System<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Not all condensers maintain vacuum but definitely those working in boiler system do. Water is used to condense steam back to liquid water in any form of boiler system, whether on board ship or in power plants. As water and steam has a volume ratio of 1:1600; that means steam is condensed to the size of 1\/1600 times than before. In other words, the specific volume of water at a given pressure is many times lower than that of steam. This enormous reduction in volume creates the vacuum inside the condenser. This partial vacuum will draw in more gas to be cooled. Now to ensure proper and continuous flow of steam to condensers at all times, vacuum must be maintained externally. In other words, it is impossible to prevent the entrance of air and other non-condensable gases into the condenser. A vacuum is maintained in the condenser so that steam can easily flow and more work can be extracted from the steam in the turbine; this is the reason why vacuum is maintained in condensers. Therefore, some methods must exist to initially cause a vacuum to exist in the condenser. This necessitates the use of vacuum-producing devices to establish and help maintain condenser vacuum.<\/p>\n<p><img decoding=\"async\" class=\"size-full wp-image-1291\" src=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/07\/3c.jpg\" alt=\"why vacuum is maintained in condenser\" width=\"600\" height=\"451\" title=\"\" srcset=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/07\/3c.jpg 600w, https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/07\/3c-300x226.jpg 300w, https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/07\/3c-559x420.jpg 559w, https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/07\/3c-80x60.jpg 80w, https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/07\/3c-160x120.jpg 160w, https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/07\/3c-265x198.jpg 265w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/p>\n<div class=\"su-note\"  style=\"border-color:#282828;border-radius:9px;-moz-border-radius:9px;-webkit-border-radius:9px;\"><div class=\"su-note-inner su-u-clearfix su-u-trim\" style=\"background-color:#424242;border-color:#ffffff;color:#ffffff;border-radius:9px;-moz-border-radius:9px;-webkit-border-radius:9px;\"><a href=\"https:\/\/www.linquip.com\/feed\"><img decoding=\"async\" class=\"alignnone\" src=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2021\/04\/Test.jpg\" alt=\"Girl in a jacket\" width=\"300\" height=\"82\" title=\"\"><\/a><\/p>\n<p style=\"roboto: sans serif;\"><b><a style=\"color: #84ffff;\" href=\"https:\/\/www.linquip.com\/experts?category_id=324\">\u00a0 \u00a0See All Condenser Experts<\/a><br \/>\n<b><a style=\"color: #84ffff;\" href=\"https:\/\/www.linquip.com\/companies\/service-provider?category_id=324\">\u00a0\u00a0 See All Condenser Service Provider<br \/>\n<b><\/b><\/a><b><a style=\"color: #84ffff;\" href=\"https:\/\/www.linquip.com\/companies\/manufacturer?category_id=324\">\u00a0\u00a0 See All Condenser Manufactures<br \/>\n<b><\/b><\/a><b><\/b><b><a style=\"color: #84ffff;\" href=\"https:\/\/www.linquip.com\/companies\/distributor?category_id=324\">\u00a0\u00a0 See All Condenser Distributor<br \/>\n<\/a><\/b><\/b><\/b><\/b><\/p>\n<\/div><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Vacuum-producing_Device_Types\"><\/span>Vacuum-producing Device Types<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The three most common vacuum-producing devices are steam-jet air ejectors (SJAE), liquid ring vacuum pumps (LRVP), and a hybrid of ejector and pump.<\/p>\n<ul>\n<li><strong>Ejectors<\/strong> can be operated with many different motive fluids: steam, air, organic vapor and other gases. They can handle corrosive and slugging liquids, solid and abrasive suction fluids without damage. They also have explosion-proof construction and can be installed indoors or outdoors with versatile mounting design. Furthermore, low initial cost, low maintenance cost and long life are other advantages of ejectors.<\/li>\n<li><strong>Liquid Ring Vacuum Pumps<\/strong> are the most used vacuum-producing devices besides ejectors in industry. They are reliable with simple design involving only one rotating part, which is not subject to wear. In addition, they can handle condensible vapors or even slugs of liquid entrained in the gas stream without damage to the pump or affecting performance. They are also resistant to contaminants entering with the gas stream and include wide choice of materials available for handling most gases and seal liquids.<\/li>\n<li><strong>Hybrid of ejector and pump <\/strong>is often used to reduce energy costs and the size of the vacuum pump. Its other advantages include operating simplicity, ability to handle corrosive vapors, available space, and the cost and availability of spare parts.<\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Vacuum_System_Application\"><\/span>Vacuum System Application<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The primary application of vacuum systems in the power generation industry is evacuating the air and other non-condensable gases from the shell side and the waterbox side of a steam surface condenser (shell and tube condenser). On the shell side, the vacuum equipment is used for two purposes: rapid evacuation of air to reduce condenser pressure before steam turbine starts, the \u201chogging mode,\u201d or for continuous removal of air and associated water vapor from the main condenser when the steam turbine is in operation, the \u201cholding mode.\u201d \u00a0The elimination of air and other non-condensable gases from the condenser shell side is necessary for appropriate heat transfer from steam to cooling water in the condenser and, consequently, to maintain high vacuum in the condenser. This increases the amount of energy extracted from the steam exhausted from the steam turbine and increases the plant\u2019s energy production. Without a vacuum system, air and other non-condensable gases would severely reduce the heat transfer in the condenser, and the plant would require a condenser with significantly more surface area for the same thermal load. Because of this, vacuum system must exist in condensers.<\/p>\n<p><img decoding=\"async\" class=\"size-full wp-image-1292\" src=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/07\/2b.jpg\" alt=\"why vacuum is maintained in condenser\" width=\"700\" height=\"499\" title=\"\" srcset=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/07\/2b.jpg 700w, https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/07\/2b-300x214.jpg 300w, https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/07\/2b-696x496.jpg 696w, https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/07\/2b-589x420.jpg 589w, https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/07\/2b-100x70.jpg 100w\" sizes=\"(max-width: 700px) 100vw, 700px\" \/><\/p>\n<div class=\"su-note\"  style=\"border-color:#282828;border-radius:9px;-moz-border-radius:9px;-webkit-border-radius:9px;\"><div class=\"su-note-inner su-u-clearfix su-u-trim\" style=\"background-color:#424242;border-color:#ffffff;color:#ffffff;border-radius:9px;-moz-border-radius:9px;-webkit-border-radius:9px;\"><a href=\"https:\/\/www.linquip.com\/feed\"><img decoding=\"async\" class=\"alignnone\" src=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2021\/04\/Test.jpg\" alt=\"Girl in a jacket\" width=\"300\" height=\"82\" title=\"\"><\/a><\/p>\n<p style=\"roboto: sans serif;\"><b><a style=\"color: #84ffff;\" href=\"https:\/\/www.linquip.com\/equipment\/324\/condensers\">\u00a0 \u00a0What is Condenser?<\/a><br \/>\n<b><a style=\"color: #84ffff;\" href=\"https:\/\/www.linquip.com\/equipment?query=condensers\">\u00a0\u00a0 Condenser For Sales<br \/>\n<b><\/b><\/a><\/b><\/b><\/p>\n<\/div><\/div>\n<h2><span class=\"ez-toc-section\" id=\"What_Will_Happen_If_Vacuum_Is_Increased_or_Removed\"><\/span>What Will Happen If Vacuum Is Increased or Removed?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Although the working pressure of a condenser do have many advantages including faster condensation, better heat exchange, avoid air to get dissolved in water and increased overall efficiency of the unit, there is a limit to which it is feasible and when it starts to make more trouble than it solves. Generally, maintaining perfect sealing condition in a condenser as the pressure reduces below one atmosphere is a hard goal to accomplish. This increase on the cost and maintenance requirement makes it ineffective in long run. Furthermore, as we reduce the pressure; the steam starts to condense at lower and lower temperature.\u00a0 As the temperature of condensing steam decreases with decrease in pressure, different problems emerge to maintain the same heat exchange between the medium. Ideally, the greater the temperature difference between the two medium, the better is the heat exchange efficiency of the condenser. Similarly, if we remove the vacuum from the system it not only increases the amount of heat energy lost unused; but also causes a rapid drop in PH of the boiler water which will lead to sudden drop in system efficiency in short run and complete damage of the turbine assembly in long run. So a condenser must never be run without vacuum unless it is safe.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"What_Is_the_Vacuum_Efficiency_of_the_Condenser\"><\/span><b>What Is the Vacuum Efficiency of the Condenser?<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Vacuum efficiency is the ratio of actual (measured by gauge) to ideal vacuum in a condenser. Ideal pressure is defined as having the same pressure as the condensate temperature (pi) or with the temperature of steam flowing into the condenser.<\/span><\/p>\n<p>So, this is all you need to know about maintaining vacuum in <a href=\"https:\/\/en.wikipedia.org\/wiki\/Condenser_(heat_transfer)\" target=\"_blank\" rel=\"noopener noreferrer\">condensers<\/a>. If you enjoyed your time in Linquip and want to share your experience with others, feel free to leave it in the comment section. We will be more than glad to have your viewpoint on the article. If you need any assistance with similar subjects, do not hesitate to <a href=\"https:\/\/www.linquip.com\/sign-up?client_redirect=\/\" target=\"_blank\" rel=\"noopener noreferrer\">sign up on our website<\/a> where our experts are ready to solve your issue.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Download_Why_Vacuum_Is_Maintained_in_Condenser_PDF\"><\/span><b>Download Why Vacuum Is Maintained in Condenser PDF<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>For your convenience, you can download this article as a PDF file so you can refer to it whenever you like.<\/p>\n<div class=\"su-button-center\"><a href=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2020\/08\/linquip.com-Why-vacuum-is-maintained-in-condenser-an-easy-to-understand-guide.pdf\" class=\"su-button su-button-style-default su-button-wide\" style=\"color:#FFFFFF;background-color:#2D89EF;border-color:#246ec0;border-radius:12px\" target=\"_blank\" rel=\"noopener noreferrer\"><span style=\"color:#FFFFFF;padding:0px 30px;font-size:22px;line-height:44px;border-color:#6cadf4;border-radius:12px;text-shadow:none\"> Download PDF<\/span><\/a><\/div>\n<p>&nbsp;<\/p>\n<p><em><strong>Read More on Linquip<\/strong><\/em><\/p>\n<ul>\n<li><span style=\"font-size: 10pt;\"><strong><span style=\"text-decoration: underline;\"><span style=\"font-family: verdana, geneva, sans-serif;\"><a href=\"https:\/\/www.linquip.com\/blog\/types-of-boilers\/\" target=\"_blank\" rel=\"noopener\">Types of boilers: Which one is the best?<\/a><\/span><\/span><\/strong><\/span><\/li>\n<li><span style=\"font-size: 10pt;\"><strong><span style=\"text-decoration: underline;\"><span style=\"font-family: verdana, geneva, sans-serif;\"><a href=\"https:\/\/www.linquip.com\/blog\/types-of-plate-heat-exchanger\/\" target=\"_blank\" rel=\"noopener\">Types of Plate Heat Exchanger: Different Types with Wide Use<\/a><\/span><\/span><\/strong><\/span><\/li>\n<li><span style=\"font-size: 10pt;\"><strong><span style=\"text-decoration: underline;\"><span style=\"font-family: verdana, geneva, sans-serif;\"><a href=\"https:\/\/www.linquip.com\/blog\/types-of-heat-exchangers\/\" target=\"_blank\" rel=\"noopener\">Types of Heat Exchangers: An Introduction to All Essential about Specifications<\/a><\/span><\/span><\/strong><\/span><\/li>\n<li><span style=\"font-size: 10pt;\"><strong><span style=\"text-decoration: underline;\"><span style=\"font-family: verdana, geneva, sans-serif;\"><a href=\"https:\/\/www.linquip.com\/blog\/heat-exchanger-efficiency\/\" rel=\"bookmark\">Heat Exchanger Efficiency Calculation &amp; 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In so doing, the latent heat is released by the substance and transferred to the surrounding environment. Now you may wonder what the point of maintaining vacuum in condensers is. In this article, Linquip has provided &#8230;<\/p>\n","protected":false},"author":6,"featured_media":1290,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","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":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","footnotes":""},"categories":[8],"tags":[],"class_list":["post-1287","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-heat-exchanger"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/posts\/1287","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/comments?post=1287"}],"version-history":[{"count":7,"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/posts\/1287\/revisions"}],"predecessor-version":[{"id":27757,"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/posts\/1287\/revisions\/27757"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/media\/1290"}],"wp:attachment":[{"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/media?parent=1287"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/categories?post=1287"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/tags?post=1287"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}