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The Terminator
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Heat exchanger
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<blockquote data-quote="Stangra" data-source="post: 16703391" data-attributes="member: 193061"><p>THEY DO! It's just that you still get <em>enough</em> air at speed to do the job.... </p><p>on the street. You won't find radiator fans on an Indy Car, but if it sits too long at a pit stop it'll start overheating.</p><p></p><p>Without the fan your car's Radiator would flow more air at speed than needed but will also overheat at low speeds/ idling... because the engine is still generating heat.</p><p></p><p>At idle most power adders aren't producing boost or adding much heat to inlet temps, it's engine heat soaking through, but fans could help a little. As soon as you're moving at even city traffic speed limits fans are slowing airflow.</p><p></p><p>Gotta remember that a Radiator is much more effective at cooling because the difference in coolant to ambient temps is a lot more. An intercooler Heat Exchanger is working with much less temp difference, less surface area, and less coolant flow. More sensitive to a fan obstructing air at speed.</p></blockquote><p></p>
[QUOTE="Stangra, post: 16703391, member: 193061"] THEY DO! It's just that you still get [I]enough[/I] air at speed to do the job.... on the street. You won't find radiator fans on an Indy Car, but if it sits too long at a pit stop it'll start overheating. Without the fan your car's Radiator would flow more air at speed than needed but will also overheat at low speeds/ idling... because the engine is still generating heat. At idle most power adders aren't producing boost or adding much heat to inlet temps, it's engine heat soaking through, but fans could help a little. As soon as you're moving at even city traffic speed limits fans are slowing airflow. Gotta remember that a Radiator is much more effective at cooling because the difference in coolant to ambient temps is a lot more. An intercooler Heat Exchanger is working with much less temp difference, less surface area, and less coolant flow. More sensitive to a fan obstructing air at speed. [/QUOTE]
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