{"id":1837,"date":"2024-07-30T07:47:28","date_gmt":"2024-07-30T07:47:28","guid":{"rendered":"https:\/\/workhouse.sweetdishy.com\/?p=1837"},"modified":"2024-07-30T07:47:29","modified_gmt":"2024-07-30T07:47:29","slug":"volumetric-efficiency","status":"publish","type":"post","link":"https:\/\/workhouse.sweetdishy.com\/index.php\/2024\/07\/30\/volumetric-efficiency\/","title":{"rendered":"\u00a0Volumetric Efficiency"},"content":{"rendered":"\n

The volumetric efficiency of a compressor is the ratio of actual free air delivered to the displacement of the compressor.<\/p>\n\n\n\n

\"equation\"\/<\/figure>\n\n\n\n

<\/a>Substituting the value of V<\/em>4<\/sub> in Eq. (10.1)<\/a>, we get<\/p>\n\n\n\n

\"equation\"\/<\/figure>\n\n\n\n

Where \u2208 is clearance ratio \"equation\" and r<\/em> is pressure ratio \"equation\"<\/p>\n\n\n\n

Example 10.1:<\/strong> A single cylinder, single acting air compressor has a cylinder diameter of 150 mm and stroke of 300 mm. It draws air into the cylinder at a pressure of 1 bar and temperature 27\u00b0C. This air is then compressed adiabatically to a pressure of 8 bar if the compressor runs at a speed of 120 rpm. Find<\/p>\n\n\n\n

    \n
  1. Mass of air compressed per cycle.<\/li>\n\n\n\n
  2. Work required per cycle.<\/li>\n\n\n\n
  3. Power required to drive the compressor.<\/li>\n<\/ol>\n\n\n\n

    Neglect the clearance volume and take R = 0.287 kJ\/kg K.<\/p>\n\n\n\n

    Solution:<\/p>\n\n\n\n

      \n
    1. Mass of air compressed \"equation\" \"equation\"<\/li>\n\n\n\n
    2. Work required per cycle,\"equation\" \"equation\"<\/li>\n\n\n\n
    3. Power required to run the compressor = Work required per cycle \u00d7 cycle per sec \"equation\"<\/li>\n<\/ol>\n\n\n\n

      Example 10.2:<\/strong> A single-stage reciprocating compressor is required to compress 1 kg of air from 1 to 5 bar. Initial temperature of air is 27\u00b0C. Calculate work for isothermal, isentropic, and polytropic compression for n<\/em> = 1.25.<\/p>\n\n\n\n

      Solution:<\/p>\n\n\n\n

      \"equation\"\/<\/figure>\n","protected":false},"excerpt":{"rendered":"

      The volumetric efficiency of a compressor is the ratio of actual free air delivered to the displacement of the compressor. Substituting the value of V4 in Eq. (10.1), we get Where \u2208 is clearance ratio  and r is pressure ratio  Example 10.1: A single cylinder, single acting air compressor has a cylinder diameter of 150 mm and stroke of 300 mm. It […]<\/p>\n","protected":false},"author":1,"featured_media":1838,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[340],"tags":[],"class_list":["post-1837","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-air-compressors"],"jetpack_featured_media_url":"https:\/\/workhouse.sweetdishy.com\/wp-content\/uploads\/2024\/07\/clock.png","_links":{"self":[{"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/posts\/1837","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/comments?post=1837"}],"version-history":[{"count":1,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/posts\/1837\/revisions"}],"predecessor-version":[{"id":1839,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/posts\/1837\/revisions\/1839"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/media\/1838"}],"wp:attachment":[{"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/media?parent=1837"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/categories?post=1837"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/tags?post=1837"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}