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Yong heng filling 60 minute scba from empty
- Thread starter Heavyopp
- Start date
I’ve had this radiator in a box for awhile, bought for a tig cooler project but went a different route
I think it was from amazon but not sure. Searching the part number on amazon doesn’t bring up the exact picture but I didn’t look real hard. The one I have happens to have the right sized barbed fittings.
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24 minutes into tank #2 - 90 bar in tank, 49.5 degrees C on the compressor head
72 degrees F output water from radiator
2 fans on the radiator seem to make a difference, these are low flow ”quiet” fans — just something I had laying around — a pair of high flow fans should really make a difference
72 degrees F output water from radiator
2 fans on the radiator seem to make a difference, these are low flow ”quiet” fans — just something I had laying around — a pair of high flow fans should really make a difference
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I run an automotive transmission cooler with a muffin fan pulling air through it, upgraded the water pump, and it still gets to about 55C if I'm filling my 300 bar 3L tank. Takes a good 10 minutes from 180 bar.
I used to freak when it would go above 50C, but realized it never goes much higher than that. Now I just let it run til full and keep venting the low side water every so often, more so in the first few minutes because they make most of that moisture during that time.
Keep up on the oil changes and don't let the water get low, it'll be fine.
I used to freak when it would go above 50C, but realized it never goes much higher than that. Now I just let it run til full and keep venting the low side water every so often, more so in the first few minutes because they make most of that moisture during that time.
Keep up on the oil changes and don't let the water get low, it'll be fine.
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seems to be finding a temp happy place — rising really slowly
53 degrees C at 54 minutes run time so far — 210 bar in a 60 minute scba starting from totally empty
output water temp around 82 F
53 degrees C at 54 minutes run time so far — 210 bar in a 60 minute scba starting from totally empty
output water temp around 82 F
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That small trans cooler seems hard to find — here’s one on ebay...
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54.2 degrees C on the head, 300 bar in the tank, warm - 1 hour 17 minutes straight thru run — water temp in the low 80’s F
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I have wondered, based on the tubing temp, if there wouldn't be significant benefit to an interstage cooler between the first and second stage. The pressure probably isn't that high, so a cooler wouldn't be hard to source, but trying to figure out how to pipe it in...
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You can buy a universal inline transmission cooler at just about any auto parts store. Find them online cheaper, just gotta wait on shipping.
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Yes, as in piping the air thru a small cooler, like a trans cooler, which I believe could deal with 90-100 psi internal pressure.
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I don’t remember where but I have seen where someone had wrapped that hot steel line with copper tubing and cooled with water. Not sure what the benefit was.
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I made water jackets for the air tubes that get hot. Yes it does make a bit of difference and I haven't had a bit of leak.
https://www.airgunnation.com/threads/2-more-yong-heng-compressor-mods-water-jacket-fan.996010/
https://www.airgunnation.com/threads/2-more-yong-heng-compressor-mods-water-jacket-fan.996010/
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You may want to check for any leaks or faulty gauge. I've gone from empty to 300 bar several times, non stop with new tanks and usually only get about 10 bar drop after the tank cools. Just my 2 cents.
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What size tanks?
I would think the larger the tank the more heated air in it, which would turn into more pressure loss as it cools.
I filled 2 60 minute tanks on 2 separate days. Both dropped to around 275 bar once cooled.
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Heavyopp,
Can you tell me about this back pressure device that holds until the pressure gets to 140 bar? Maybe a link would be even better?
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Well, maybe if I don't let my tank, bottle, rifle drop below 150 bar, it won't take too long to fill up my molecular sieve unit. Although while it's filling I think I understand that the drive won't be doing much in the way of removing moisture as pressure is required to make that happen. I was hoping it was a simple inline add-on.
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