{"id":1235,"date":"2018-10-09T12:50:33","date_gmt":"2018-10-09T12:50:33","guid":{"rendered":"https:\/\/aboutfoundry.com\/?p=1235"},"modified":"2026-08-27T12:14:14","modified_gmt":"2026-08-27T12:14:14","slug":"cooling-water-volume","status":"publish","type":"post","link":"https:\/\/aboutfoundry.com\/en\/cooling-water-volume\/","title":{"rendered":"Cooling water volume"},"content":{"rendered":"<p class=\"wp-block-paragraph\"><a href=\"https:\/\/aboutfoundry.com\/en\/cooling-water\/\">Cooling water<\/a> volume is determined mainly by the electrical output. As a rule of thumb, approx. 27% of the furnace output is dissipated into the cooling water as heat loss from the coil and crucible wall, excluding converter losses.<sup><a href=\"#q1\">[1]<\/a><\/sup><\/p>\n<p class=\"wp-block-paragraph\">In the case of a 5-t furnace with 250 Hz and 3,000 kW, this gives 810 kW or<br \/>\n696,600 kcal\/h, that must be dissipated at a temperature difference of 27 K. This<br \/>\ngives a cooling water volume of 25.8 m3\/h (25,800 l\/h). (kcal\/h divided by the<br \/>\ntemperature difference gives the volume in litres\/h).\n<\/p>\n<h2>References<\/h2>\n<ol class=\"quellen\">\n<li id=\"q1\">Herbert H. Netzel: Induktionsofenhandbuch. 3rd edition, Eigenverlag IES, Witten 2003, p. 118. Empirical value, no manufacturer figure. On the same page the handbook also gives a rough estimate of 35% without stating its scope, and in the section on heat recovery (p. 222) states 900 kW for the same example furnace. We use the only figure with a stated scope (coil and crucible wall) and standardise on it.<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>Cooling water volume is determined mainly by the electrical output. As a rule of thumb, approx. 27% of the furnace output is dissipated into the cooling water as heat loss from the coil and crucible wall, excluding converter losses.[1] In the case of a 5-t furnace with 250 Hz and 3,000 kW, this gives 810 &hellip; <a href=\"https:\/\/aboutfoundry.com\/en\/cooling-water-volume\/\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Cooling water volume<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[2,2],"tags":[],"class_list":["post-1235","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"acf":{"adresse":"","telefon":"","e-mail":"","webseite":""},"_links":{"self":[{"href":"https:\/\/aboutfoundry.com\/en\/wp-json\/wp\/v2\/posts\/1235","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aboutfoundry.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/aboutfoundry.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/aboutfoundry.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/aboutfoundry.com\/en\/wp-json\/wp\/v2\/comments?post=1235"}],"version-history":[{"count":6,"href":"https:\/\/aboutfoundry.com\/en\/wp-json\/wp\/v2\/posts\/1235\/revisions"}],"predecessor-version":[{"id":5916,"href":"https:\/\/aboutfoundry.com\/en\/wp-json\/wp\/v2\/posts\/1235\/revisions\/5916"}],"wp:attachment":[{"href":"https:\/\/aboutfoundry.com\/en\/wp-json\/wp\/v2\/media?parent=1235"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aboutfoundry.com\/en\/wp-json\/wp\/v2\/categories?post=1235"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aboutfoundry.com\/en\/wp-json\/wp\/v2\/tags?post=1235"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}