Hello ALL
there were some guys looking for intercoolers or want some info on some, I have what you need,Email me @ indyjoe73@msn.com or if you who know some one who needs one post info or e mail me.
I have a general intercooler question.
If the air flow speed through the intercooler at WOT is 100 mph (wild guess) at 230 degrees (another guess), and the intercooler is 4" thick such as a superchiller. How much can the intercooler reduce the air temperature ?
HEY INTERCOOLER GURU WHERE'S MY INFO ? http://free.***boat.net/ubb/biggrin.gif
Unchained, First off air flow is measured in feet per second most of the time.
Second, I put some thermocouples above and below my superchiller. I was seeing about 97 deg temp drop. That was with a 461" running at around 8,800 rpm making 28psi. I was force feeding the intercooler with a -10 pick-up mounted on the cave plate. The boat was running 127mph. The water temp was pretty cold that day (by So Cal standards) but I didn't measure it (should have).
I thought the temp drop was pretty good myself. I didn't measure the differential pressure across the intercooler. I should have and next time I get a chance I will.
[This message has been edited by superdave013 (edited November 22, 2001).]
Wow, 97 degree temp drop, I would have only guessed 10 or 15 deg. What was your air temp going into the top of the intercooler?
What do you think the air flow speed was ?
When you said the differential pressure do you mean the boost pressure drop caused by the decrease in air temp?
What happened to intercooler GURU ?
When I get back from the river this weekend I will see if I can dig up all the info I did back then. I wrote that kind of stuff right on the time slips.
Differential Pressure across the intercooler is basically the amount of pressure that is dropped (or lost) across the intercooler.
For the air flow speed, Let me find out what the inlet temp was. Then I will be able to correct the air flow for temperature.
I'm using the same intercooler on my turbo engine. I plan to put test ports above it and below it. I will be able to get much better data the second time around.
Oh, by the way. I am no engine / cyld head air flow guru. I do size duct and do allot of air flow stuff for industrial applications. And I work with allot of industrial heat exchangers.
Your inlet temps will most likly be allot lower as you boost might not be as high. I was spinning an 8-71 @ 30% over. They make lots of heat when you crank them up like that. I would have been better off with a 14-71 turning slower but still making the same amount of boost. Bigger is better with roots type of blowers.
This is a great topic seeing how I'm building a 871 blowen 427 chev for my Hondo flat. Holly crap I almost fell out of my chair when I read a 97 degree drop My guess would have been like Unchained maybe 10 to15 degrees. If you hav'nt guessed yet this is be first blower motor.
I think Superdave had a typo and it was actually a 9.7 degree temp drop with the intercooler. http://free.***boat.net/ubb/rolleyes.gif I can't believe that given the speed of the airflow through that thin intercooler it could reduce the temp that much. I had hoped that the intercooler Guru that started this thread would provide some backup facts. I have never run an intercooler because I questioned the effectiveness of the sandwich units that are on the market.Maybe with some facts it would change my mind. OK INTERCOOLER GURU PROVE ME WRONG !!. http://free.***boat.net/ubb/tongue.gif
Hey unchained, I believe Superdaves #'s are close. look at how small a heater core is air temp is with in 20 deg. of water temp and heater cores are 1" thick, chillers 4" thick and you control water temp so what do you think?
I think it would be cheep HP. what do think? Plus they look cool. Buy me one and i'll tell you how it works, lol
Bill
I stand by my #'s. I'm not selling them and have nothing to gain if you buy one or not.
Like I said, I'll redo the test when I get the turbo engine complete.
The intercoolers made by whipple will really blow your mind. They cost more but are the ones to buy.
sgdiv7, Not only will you gain HP but will burn pistons less too!
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