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Air compressor after cooler choices

slackdaddy1

Well-known member
Joined
Mar 15, 2014
Messages
476
Location
Southern MD
I am trying to wrap up the moving compressor to the shed,, and will be adding an aftercooler between the pump and tank.
It is an IR T-30 5hp 60gal vert unit.

I am looking at 2 styles of after coolers:

Parallel tube (styled like a car radiator)

Or a "series" (one long tube style)

The ebay 16 pass unit has no pressure rating listed,, is there a name brand (one long tube style) that that folks trust ?
I believe my line from the comp to the tank is 1/2" so the smaller 3/8 ID would be to small?

Thanks,
Slack
 
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OccupantRJ

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Joined
May 15, 2009
Messages
11,066
Location
Eastern North Carolina
The two coolers you linked to show 1/2” and 3/4” connections, not 3/8” as you questioned? A series type cooler would have more restricted air flow. A cooler with end header tanks uses a more distributed flow through all the tubes at the same time.
 

Yankeefarmer

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Joined
Jul 25, 2011
Messages
1,181
Location
Connecticut
FWIW, I used the Derale 13315 cooler, purchased on Amazon. It’s a series type. Installed it between the pump and my 60 gal receiver tank. I provided air flow using a cheap box fan. Works great. The inlet line to the cooler gets very hot. The outlet line is always cool to the touch.

I experienced only one problem, unrelated to the cooler choice. During a long sandblasting session, the inlet piping got so hot that a soldered copper joint let go. I fixed it by using only threaded joints on the inlet side.
 

GeoBruin

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Joined
May 5, 2018
Messages
3,738
I am trying to wrap up the moving compressor to the shed,, and will be adding an aftercooler between the pump and tank.
It is an IR T-30 5hp 60gal vert unit.

I am looking at 2 styles of after coolers:

Parallel tube (styled like a car radiator)

Or a "series" (one long tube style)

The ebay 16 pass unit has no pressure rating listed,, is there a name brand (one long tube style) that that folks trust ?
I believe my line from the comp to the tank is 1/2" so the smaller 3/8 ID would be to small?

Thanks,
Slack

The Derale that Yankee farmer mentioned is a popular choice for this application. I believe it's the same one I used.

Regarding restricting flow, remember that your compressor is only sending 15ish cfm to the tank. At that low flow rate, you won't lose as much flow as you think. It's not like when you have a hose coming out of your tank which is capable of flowing a couple hundred cfm.
 
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slackdaddy1

Well-known member
Joined
Mar 15, 2014
Messages
476
Location
Southern MD
The two coolers you linked to show 1/2” and 3/4” connections, not 3/8” as you questioned? A series type cooler would have more restricted air flow. A cooler with end header tanks uses a more distributed flow through all the tubes at the same time.
My copper line from the Pump to the tank is 1/2" ID copper, so that is "5/8 tube".
While the series cooler I linked has 1/2" connections, it is 1/2 "Tube" or 3/8" ID
 

niget2002

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Joined
Oct 2, 2012
Messages
11,123
Location
Josephine, TX
If you don't do anything to drain it, it will go into the tank. Many of us have installed water traps after the cooler and before the tank.
This is the setup I planned on doing. Still have the parts sitting in an Amazon list. Get an auto drain water separator so when the pump turns off and the pressure releases, the trap will empty.
 
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slackdaddy1

Well-known member
Joined
Mar 15, 2014
Messages
476
Location
Southern MD
Follow up,,
I used the "Belt Guard After Cooler for 10HP"

I welded up brackets to hold the after cooler,, no separate fan added,, it catches a little air from the pump pully fan.
I soldered up a "separator- drop leg drain" , to drain the water before going into the tank,, everything is plumbed to drain BACK towards the separator.

Air temp at 49 deg,, compressor at 49 deg
Ran the compressor to fill the 60 gal tank from 0 psi to 160 psi
Aftercooler inlet neck was 198 deg,
Aftercooler outlet neck was 68 deg
No measurable water drained from tank or separator,,

The real test will be this coming summer :)

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