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Old 11-06-2008, 02:40 AM   #21
ScubaSteve
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Man...I bent the tubing without a bender....my hands are frickin sore! I kinked it a couple times on accident, but it all fits. No way could I coil it at 3", more like 4-5. I did my best to cram it all into a 6" stovepipe, and I put a flattened elbow at the top. It looks kinda cool, sorta like a supercharger. I guess I'll try it when I brew on saturday.

On another note, how did you guys cut the bottom off your cornies? I have a jigsaw and a cutoff tool, but I worry about doing it on such a rounded surface.

 
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Old 11-06-2008, 02:46 AM   #22
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Quote:
Originally Posted by ScubaSteve View Post
Man...I bent the tubing without a bender....my hands are frickin sore! I kinked it a couple times on accident, but it all fits. No way could I coil it at 3", more like 4-5. I did my best to cram it all into a 6" stovepipe, and I put a flattened elbow at the top. It looks kinda cool, sorta like a supercharger. I guess I'll try it when I brew on saturday.

On another note, how did you guys cut the bottom off your cornies? I have a jigsaw and a cutoff tool, but I worry about doing it on such a rounded surface.
When I rolled mine I rolled it around a 4" pvc pipe and it was easy until I started rolling it back down over the coils.

To cut the keg I used my sawzall with a 12 inch blade.
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Old 11-06-2008, 02:54 AM   #23
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It is easier to wind the tube around the 3-4" pipe, then un bend coils to an oval shape, then adjust angle between ovals to overlap the coils to eliminate the chimney effect. I cheated and used a pipe threading machine to rotate pipe and controlled the coil winding tension by gripping the SS tubing while wearing leather gloves.


 
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Old 11-06-2008, 03:43 AM   #24
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It is easier to wind the tube around the 3-4" pipe, then un bend coils to an oval shape, then adjust angle between ovals to overlap the coils to eliminate the chimney effect. I cheated and used a pipe threading machine to rotate pipe and controlled the coil winding tension by gripping the SS tubing while wearing leather gloves.
That is soooo cheating..... as punishment I think you should send it to me

 
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Old 11-06-2008, 04:02 AM   #25
kladue
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I suppose I have an unfair advantage in the boiler building area as supervising industrial instrumentation installation projects has side benefits in tools and material leftovers.

 
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Old 11-06-2008, 04:20 AM   #26
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hey kladue, where did you source your MFC?
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Old 11-06-2008, 04:56 AM   #27
kladue
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For the boiler it is a STEC SEC 4500 20 LPM flow, and main burner is a STEC SEC 4550 30 LPM flow. These were purchased on Ebay for about $75 each a couple years ago for use on the phase 2 brewery system. These units require +15V and -15V power and a 0-5VDC control signal. Other manufacturers have units that use a single 24V supply and have similar flow ranges.

 
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Old 11-06-2008, 12:36 PM   #28
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I can't believe more people aren't doing this in their rigs. There's some obvious kinks to work out, but it's a relatively small unit and it actually has a worthwhile function. I see stirrers, etc. added to rigs, but I'm not sure about the real benefit.

We'll see how my version turns out. I pretty much mangled the tubing, but it looks like it'll still flow. I may eventally end up scrapping it after I work the bugs out and going with 2-4 10 ft sections. I figure 10 feet is probably easier to manage than 25, and then you can just interlace the coils and hook them up to the in/out tees.

 
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Old 11-06-2008, 01:23 PM   #29
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I plan on makeing one oncew school is over and I have the money

 
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Old 11-06-2008, 03:10 PM   #30
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This has really got me thinking. My problem is my entire set up is electric. I already have an external heat exchanger for my HERMS but it only has about 18' of 1/2 copper in there. I wonder if I use my EHLT and my HERMS heat exchanger in conjunction if I will be able to lower the time it takes to heat my water. I was thinking of having the HLT filled with water and the heating element on and pumping that through the heat exchanger and back to the HLT. I think that it should cut some time off, granted it will not be as fast as the flash boiler but should help.

mike

 
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