{"id":17966,"date":"2018-06-03T08:50:22","date_gmt":"2018-06-03T08:50:22","guid":{"rendered":"http:\/\/sitepourvtc.com\/?page_id=17966"},"modified":"2022-11-20T06:03:23","modified_gmt":"2022-11-20T06:03:23","slug":"back-pressure-steam-turbine-process-steam","status":"publish","type":"page","link":"https:\/\/sitepourvtc.com\/nuclear-power-plant\/turbine-generator-power-conversion-system\/what-is-steam-turbine-description-and-characteristics\/back-pressure-steam-turbine-process-steam\/","title":{"rendered":"Back-pressure Steam Turbine &#8211; Process Steam"},"content":{"rendered":"<div   id="8n9s8rpp6h"    class=\"su-quote su-quote-style-default\"><div   id="8n9s8rpp6h"    class=\"su-quote-inner su-u-clearfix su-u-trim\"><strong>Back-pressure steam turbines<\/strong> or non-condensing turbines are most widely used for <strong>process steam applications<\/strong>. Back-pressure turbines expand the live steam supplied by the boiler to the pressure at which the steam is required for the process.<\/div><\/div>\n<h2>Classification of Turbines &#8211; steam supply and exhaust conditions<\/h2>\n<p><strong>Steam turbines<\/strong> may be classified into different categories depending on their purpose and <strong>working pressures<\/strong>. The industrial usage of a turbine influences the initial and final conditions of steam. A pressure difference must exist between the steam supply and the exhaust for any steam turbine to operate.<\/p>\n<p>This classification includes:<\/p>\n<ul>\n<li><a title=\"Condensing Steam Turbine\" href=\"http:\/\/sitepourvtc.com\/nuclear-power-plant\/turbine-generator-power-conversion-system\/what-is-steam-turbine-description-and-characteristics\/condensing-steam-turbine\/\"><strong>Condensing Steam Turbine<\/strong><\/a>,<\/li>\n<li><a title=\"Back-pressure Steam Turbine \u2013 Process Steam\" href=\"http:\/\/sitepourvtc.com\/nuclear-power-plant\/turbine-generator-power-conversion-system\/what-is-steam-turbine-description-and-characteristics\/back-pressure-steam-turbine-process-steam\/\"><strong>Back-pressure Steam Turbine<\/strong><\/a>,<\/li>\n<li><a title=\"Reheat Steam Turbine\" href=\"http:\/\/sitepourvtc.com\/nuclear-power-plant\/turbine-generator-power-conversion-system\/what-is-steam-turbine-description-and-characteristics\/reheat-steam-turbine\/\"><strong>Reheat Steam Turbine<\/strong><\/a>,<\/li>\n<li><a title=\"Extraction Turbine \u2013 Turbine with Steam Extraction\" href=\"http:\/\/sitepourvtc.com\/nuclear-power-plant\/turbine-generator-power-conversion-system\/what-is-steam-turbine-description-and-characteristics\/extraction-turbine-turbine-with-steam-extraction\/\"><strong><b>Turbine with Steam Extraction<\/b><\/strong><\/a><\/li>\n<\/ul>\n<h2>Back-pressure Steam Turbine<\/h2>\n<figure id=\"attachment_17906\" aria-describedby=\"caption-attachment-17906\" style=\"width: 440px\" class=\"wp-caption alignright\"><a href=\"http:\/\/sitepourvtc.com\/wp-content\/uploads\/2017\/05\/Back-pressure-steam-turbine-schema.png\"><img loading=\"lazy\" class=\"size-full wp-image-17906\" src=\"http:\/\/sitepourvtc.com\/wp-content\/uploads\/2017\/05\/Back-pressure-steam-turbine-schema.png\" alt=\"Back-pressure steam turbine - schema\" width=\"450\" height=\"315\" srcset=\"https:\/\/sitepourvtc.com\/wp-content\/uploads\/2017\/05\/Back-pressure-steam-turbine-schema.png 450w, https:\/\/sitepourvtc.com\/wp-content\/uploads\/2017\/05\/Back-pressure-steam-turbine-schema-300x210.png 300w\" sizes=\"(max-width: 450px) 100vw, 450px\" \/><\/a><figcaption id=\"caption-attachment-17906\" class=\"wp-caption-text\">Back-pressure steam turbine &#8211; schema<\/figcaption><\/figure>\n<p><strong>Back-pressure steam turbines<\/strong> or non-condensing turbines are most widely used for <strong>process steam applications<\/strong>. Steam is a principal energy source for many industrial processes. The popularity of <strong>process steam<\/strong> as an energy source stems from its many advantages, which include:<\/p>\n<ul>\n<li><strong> high heat capacity, <\/strong><\/li>\n<li><strong>transportability <\/strong><\/li>\n<li><strong>low toxicity<\/strong><\/li>\n<\/ul>\n<p>The process steam can be produced by <strong>back-pressure steam turbines<\/strong>, which also generate mechanical work (or electrical energy). \u00a0Back-pressure turbines expand the live steam supplied by the boiler to the pressure at which the steam is required for the process. A regulating valve controls the exhaust pressure to suit the needs of the process steam pressure. Back-pressure turbines are commonly found at <strong>refineries<\/strong>, district heating units, pulp and paper plants, and <strong>desalination facilities<\/strong> where large amounts of low-pressure process steam are needed. The electric power generated by the back-pressure turbine is directly proportional to the amount of process steam required.<\/p>\n<div   id="8n9s8rpp6h"     class=\"lgc-column lgc-grid-parent lgc-grid-100 lgc-tablet-grid-100 lgc-mobile-grid-100 lgc-equal-heights \"><div   id="8n9s8rpp6h"     class=\"inside-grid-column\">\u00a0 <div   id="8n9s8rpp6h"    class=\"su-accordion su-u-trim\"><div   id="8n9s8rpp6h"    class=\"su-spoiler su-spoiler-style-default su-spoiler-icon-plus su-spoiler-closed\" data-scroll-offset=\"0\"><div   id="8n9s8rpp6h"    class=\"su-spoiler-title\" tabindex=\"0\" role=\"button\"><span class=\"su-spoiler-icon\"><\/span>References:<\/div><div   id="8n9s8rpp6h"    class=\"su-spoiler-content su-u-clearfix su-u-trim\"><strong>Reactor Physics and Thermal Hydraulics:<\/strong>\n<ol>\n<li>J. R. Lamarsh, Introduction to Nuclear Reactor Theory, 2nd ed., Addison-Wesley, Reading,\u00a0MA (1983).<\/li>\n<li>J. R. Lamarsh, A. J. Baratta, Introduction to Nuclear Engineering, 3d ed., Prentice-Hall, 2001, ISBN: 0-201-82498-1.<\/li>\n<li>W. M. Stacey, Nuclear Reactor Physics, John Wiley &amp; Sons, 2001, ISBN: 0- 471-39127-1.<\/li>\n<li>Glasstone, Sesonske. Nuclear Reactor Engineering: Reactor Systems Engineering,\u00a0Springer; 4th edition, 1994, ISBN:\u00a0978-0412985317<\/li>\n<li>Todreas Neil E., Kazimi Mujid S. Nuclear Systems Volume I: Thermal Hydraulic Fundamentals, Second Edition. CRC\u00a0Press; 2\u00a0edition, 2012, ISBN:\u00a0978-0415802871<\/li>\n<li>Zohuri B., McDaniel P. Thermodynamics in Nuclear Power Plant Systems. Springer; 2015, ISBN:\u00a0978-3-319-13419-2<\/li>\n<li>Moran Michal J., Shapiro Howard N. Fundamentals of Engineering Thermodynamics, Fifth Edition,\u00a0John Wiley &amp; Sons, 2006, ISBN:\u00a0978-0-470-03037-0<\/li>\n<li>Kleinstreuer C. Modern Fluid Dynamics. Springer, 2010,\u00a0ISBN 978-1-4020-8670-0.<\/li>\n<li>U.S. Department of Energy, THERMODYNAMICS, HEAT TRANSFER, AND FLUID FLOW. DOE Fundamentals Handbook, Volume 1, 2, and 3. June 1992.<\/li>\n<li>U.S. NRC. NUREG-0800,\u00a0Standard Review Plan for the Review of Safety Analysis Reports for Nuclear Power Plants: LWR Edition<\/li>\n<\/ol>\n<\/div><\/div><\/div><div   id="8n9s8rpp6h"    class=\"su-divider su-divider-style-dotted\" style=\"margin:15px 0;border-width:2px;border-color:#999999\"><\/div><\/div><\/div><div   id="8n9s8rpp6h"    class=\"su-divider su-divider-style-default\" style=\"margin:15px 0;border-width:2px;border-color:#999999\"><\/div><div   id="8n9s8rpp6h"     class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div   id="8n9s8rpp6h"     class=\"inside-grid-column\"><\/div><\/div><div   id="8n9s8rpp6h"     class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div   id="8n9s8rpp6h"     class=\"inside-grid-column\">\n<h2>See above:<\/h2>\n<p>Steam Turbine<a href=\"http:\/\/sitepourvtc.com\/nuclear-power-plant\/turbine-generator-power-conversion-system\/what-is-steam-turbine-description-and-characteristics\/\" class=\"su-button su-button-style-flat\" style=\"color:#606060;background-color:#ffffff;border-color:#cccccc;border-radius:10px;-moz-border-radius:10px;-webkit-border-radius:10px\" target=\"_self\"><span style=\"color:#606060;padding:7px 20px;font-size:16px;line-height:24px;border-color:#ffffff;border-radius:10px;-moz-border-radius:10px;-webkit-border-radius:10px;text-shadow:0px 0px 0px #000000;-moz-text-shadow:0px 0px 0px #000000;-webkit-text-shadow:0px 0px 0px #000000\"><i class=\"sui sui-link\" style=\"font-size:16px;color:#5d5d5d\"><\/i> <\/span><\/a><\/p><\/div><\/div><div   id="8n9s8rpp6h"     class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div   id="8n9s8rpp6h"     class=\"inside-grid-column\"><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Classification of Turbines &#8211; steam supply and exhaust conditions Steam turbines may be classified into different categories depending on their purpose and working pressures. The industrial usage of a turbine influences the initial and final conditions of steam. A pressure difference must exist between the steam supply and the exhaust for any steam turbine to &#8230; <a title=\"Back-pressure Steam Turbine &#8211; Process Steam\" class=\"read-more\" href=\"https:\/\/sitepourvtc.com\/nuclear-power-plant\/turbine-generator-power-conversion-system\/what-is-steam-turbine-description-and-characteristics\/back-pressure-steam-turbine-process-steam\/\" aria-label=\"More on Back-pressure Steam Turbine &#8211; Process Steam\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":17859,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"generate_page_header":""},"_links":{"self":[{"href":"https:\/\/sitepourvtc.com\/wp-json\/wp\/v2\/pages\/17966"}],"collection":[{"href":"https:\/\/sitepourvtc.com\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/sitepourvtc.com\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/sitepourvtc.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sitepourvtc.com\/wp-json\/wp\/v2\/comments?post=17966"}],"version-history":[{"count":3,"href":"https:\/\/sitepourvtc.com\/wp-json\/wp\/v2\/pages\/17966\/revisions"}],"predecessor-version":[{"id":35353,"href":"https:\/\/sitepourvtc.com\/wp-json\/wp\/v2\/pages\/17966\/revisions\/35353"}],"up":[{"embeddable":true,"href":"https:\/\/sitepourvtc.com\/wp-json\/wp\/v2\/pages\/17859"}],"wp:attachment":[{"href":"https:\/\/sitepourvtc.com\/wp-json\/wp\/v2\/media?parent=17966"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}