heat loss due to air flow across hoses 1

[NCCaryME]

I have a situation that I'm not sure how to approach. I have a series of braided metal hoses through which a hot oil (~450F) flows. These hoses are uninsulated and therefore lose heat to the ambient surroundings. A pneumatic system being installed may result in a large air flow (ambient temperature) across these hoses. Knowing the flows and temperatures of each fluid, how should I go about predicting the effect of moving air across these hoses? Ultimately I'd like to know how much MORE heat I will lose to the moving air versus the still air.

So, how do you suggest I approach this problem? Seems like a cross-flow heat exchanger, but a bit more complicated.

 

[pmover]

not that complicated . . .

go to website:

http://www.pipeinsulation.org/

download the 3eplus software and execute the program with your situation (bare pipe, size ?, with x mph wind). a reasonable heat loss value will be provided.

good luck!
-pmover