Pro/Forums - View Single Post

myv65 · 07-01-2002, 08:08 PM

Sirpent,

They are certainly similar, though the few differences are dramatic. A block must receive a large amount of energy through a relatively small area. It must then transfer this heat via conduction where a fluid picks it up via convection. A radiator also has three processes. It's convection from the liquid to the tubing, conduction through the tubing to the fins, and convection from the fins to the air.

So each takes heat input from a small area (region contacting the chip, ID of radiator tubing contacting fluid) and conducts it to a much larger area (surface area inside block passages, surface area of radiator fins). Due to vastly different properties from air to water, the convection across the radiator fins easily can become a bottleneck. I'm going to talk about each of these thermal resistances in a whee more depth during the article.

07-01-2002, 08:08 PM	#93
myv65 Cooling Savant Join Date: May 2002 Location: home Posts: 365	Sirpent, They are certainly similar, though the few differences are dramatic. A block must receive a large amount of energy through a relatively small area. It must then transfer this heat via conduction where a fluid picks it up via convection. A radiator also has three processes. It's convection from the liquid to the tubing, conduction through the tubing to the fins, and convection from the fins to the air. So each takes heat input from a small area (region contacting the chip, ID of radiator tubing contacting fluid) and conducts it to a much larger area (surface area inside block passages, surface area of radiator fins). Due to vastly different properties from air to water, the convection across the radiator fins easily can become a bottleneck. I'm going to talk about each of these thermal resistances in a whee more depth during the article.