{"id":5969,"date":"2018-01-30T09:22:53","date_gmt":"2018-01-30T17:22:53","guid":{"rendered":"https:\/\/coolingsourcethermal.com\/?page_id=5969"},"modified":"2018-01-30T09:22:53","modified_gmt":"2018-01-30T17:22:53","slug":"heat-pipe-system-design-consideration","status":"publish","type":"page","link":"https:\/\/coolingsourcethermal.com\/coolingsourcethermal.com\/NEW2025\/heat-pipe-system-design-consideration\/","title":{"rendered":"Heat Pipe System Design Consideration"},"content":{"rendered":"

HEAT PIPE SYSTEM DESIGN CONSIDERATIONS<\/strong>:<\/span>
\nA simplified heat pipe system and its thermal equivalent are shown below to explain the area of thermal resistance of a heat pipe system.<\/span>
\nThe total thermal resistance of the heat pipe (evaporator surface to the condenser) is given by manufacturer.  Additional thermal resistance is encountered in the interface to the heat pipe and within the heat source and heat sink.<\/span><\/p>\n

HEAT PIPE SYSTEM`<\/strong><\/span><\/p>\n

                                         \"HEAT<\/a><\/span>
\n\"HEAT<\/a><\/p>\n

THERMAL EQUIVALENT<\/strong><\/p>\n

\"HEAT<\/a>
\nHEAT PIPE SYSTEM EXAMPLE<\/strong>: <\/span>We want to determine the temperature drop at a given watt. Heat source dissipating 60 watts through a \u00bc inch water fill heat pipe to air cooled fins with 0.5w\/in2\/\u00b0c above ambient.<\/span>
\nWe assume: <\/strong>
\n1-Ambient Temperature: 30\u00b0c<\/span>
\n2-Horizontal orientation of the heat pipe system<\/span>
\n3-Heat pipe input on source: 1 inch<\/span>
\n4-Heat pipe input on sink: 1.5 inch<\/span>
\n5-Interface material thickness 0.001 inch and 0.05\u00b0c\/w\/in2<\/span>
\nHeat pipe system design system Thermal resistance interface (Ri1) = 0.05\/\u220fx 0.25 x 1 = 0.064\u00b0c\/w<\/span>
\nThermal resistance heat pipe (Rhp) = 0.35\u00b0c\/w given by manufacturer<\/span>
\nThermal resistance interface (Ri2) = 0.05\/\u220fx 0.25 x 1.5 = 0.042\u00b0c\/w<\/span>
\nTotal resistance (Rt) = 0.064 + 0.35 + 0.042 = 0.456\u00b0c\/w<\/span>
\nTemperature change from input heat source to output heat sink:<\/span>
\n                              <\/b> \u0394T1(\u00b0c) = 60 w x 0.456 = 27.4\u00b0c<\/strong>
\nHeat pipe system design, An additional temperature drop, normally the most significant one, will be found between the heat sink and the ambient air. This drop (<\/span>\u0394<\/b>T2) <\/b>must be added to<\/span> \u0394<\/b>T1 <\/b>to obtain the source temperature<\/span>.<\/span>
\n\u0394T2 = 60w\/0.5 x \u220f x 1.5 x o.25 = 102\u00b0c + 30\u00b0c (ambient) = 132\u00b0c<\/strong>
\nThe heat source temperature: \u0394T1 + \u0394T2 = 137.72\u00b0c<\/strong>
\n\"HEAT<\/a><\/p>\n

 <\/p>\n

Contact us<\/a>
\nPurchase our heatsinks<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

HEAT PIPE SYSTEM DESIGN CONSIDERATIONS: A simplified heat pipe system and its thermal equivalent are shown below to explain the area of thermal resistance of a heat pipe system. The total thermal resistance of the heat pipe (evaporator surface to the condenser) is given by…<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-5969","page","type-page","status-publish","hentry"],"yoast_head":"\nHeat Pipe System Design Consideration - Heatsinks<\/title>\n<meta name=\"description\" content=\"Heat pipe system design system. The total thermal resistance of the heat pipe is given by it's manufacturer. 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