{"id":363331,"date":"2024-04-20T23:56:24","date_gmt":"2024-04-20T23:56:24","guid":{"rendered":"\/forum\/forums\/topic\/water-heater\/"},"modified":"2024-04-20T23:56:24","modified_gmt":"2024-04-20T23:56:24","slug":"water-heater","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/water-heater\/","title":{"rendered":"Water Heater"},"content":{"rendered":"<div>I&#8217;m trying to design a flow through water heater, where an energy source of around 35 W\/cm2 is applied to the outer surface of the pipe. In this case, this heater needs to supply around 30 kW, and it can&#8217;t be longer than 200mm (required), so it has to comply with measurements regarding the diameter and length of the tube. One of the solutions I&#8217;ve thought of is to apply a spiral inside the pipe in order to increase the path the water needs to travel (Flow rate = 20L\/min). This water must have a temperature difference of more than 60&ordm;C from the inlet to the outlet.&nbsp;<\/div>\n<div>First Option (Single Pipe): Diameter: 70mm; Length: 200cm&nbsp;<\/div>\n<div>Second Option: Diameter (Double Pipe): 50mm; Length: 400cm&nbsp;<\/div>\n<div>I have run simulations in Ansys for different types of spiral increments, from 7mm (visible in the images)&nbsp; to 17mm, but no solution manages to exceed a difference of 30&ordm;C.<\/div>\n<div>&nbsp;<\/div>\n<div>Does anyone have any advice?<\/div>\n<div>&nbsp;<\/div>\n<div><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/04\/20-04-2024-1713657192-mceclip0.png\"><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2024\/04\/20-04-2024-1713657241-mceclip1.png\"><\/div>\n","protected":false},"template":"","class_list":["post-363331","topic","type-topic","status-closed","hentry","topic-tag-fluent-cfd-ansys-1","topic-tag-heat-trasnfer","topic-tag-heater-1"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"I&#039;m trying to design a flow through water heater, where an energy source of around 35 W\/cm2 is applied to the outer surface of the pipe. In this case, this heater needs to supply around 30 kW, and it can&#039;t be longer than 200mm (required), so it has to comply with measurements regarding the diameter\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/water-heater\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.10\" \/>\n\t\t<meta property=\"og:locale\" content=\"en_US\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Ansys Learning Forum | Ansys Innovation Space\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"Water Heater | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"I&#039;m trying to design a flow through water heater, where an energy source of around 35 W\/cm2 is applied to the outer surface of the pipe. 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