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Author Topic: Flat plate and sidearm water heater heat exchangers  (Read 3090 times)

juddspaintballs

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Re: Flat plate and sidearm water heater heat exchangers
« Reply #15 on: January 24, 2020, 10:32:03 AM »

Nope, still here in the mountains of WV.  It's been about 6 years since you dropped off the pipe.  When I move to the farm, it's just on the other side of the mountain so I'm not going too far. 





Badger Pipe 30 plate - $135.  I'll get that one.  Thanks  :thumbup:
https://badger-pipe.com/products/30-plate-water-to-water-brazed-plate-1-fpt-ports-w-new-style-brackets?variant=29491365201
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slimjim

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Re: Flat plate and sidearm water heater heat exchangers
« Reply #16 on: January 24, 2020, 11:03:04 AM »

I would like to vacation in that area once, meet the locals, learn how to make good shine.
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Wood boiler sales, service and installation for the Northeastern USA.

juddspaintballs

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Re: Flat plate and sidearm water heater heat exchangers
« Reply #17 on: January 24, 2020, 01:20:52 PM »

Well, when I finally do move to the farm, I'm going to need some Logstor again...
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slimjim

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Re: Flat plate and sidearm water heater heat exchangers
« Reply #18 on: January 24, 2020, 02:44:44 PM »

Can you make shine?
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juddspaintballs

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Re: Flat plate and sidearm water heater heat exchangers
« Reply #19 on: January 24, 2020, 07:31:13 PM »

I have never tried to.  It is legal to do (for fuel).  I have a friend that makes fuel and stores it in mason jars, though.
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slimjim

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Re: Flat plate and sidearm water heater heat exchangers
« Reply #20 on: January 25, 2020, 03:47:12 AM »

Maybe when I come down we can visit your friend as well?
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juddspaintballs

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Re: Flat plate and sidearm water heater heat exchangers
« Reply #21 on: January 28, 2020, 07:02:41 PM »

Do I need a monoflow tee or will a pair of normal tee's work?  I'm obviously going to install isolation valves for the flat plate. 
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juddspaintballs

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Re: Flat plate and sidearm water heater heat exchangers
« Reply #22 on: January 29, 2020, 07:10:08 PM »

I've ordered the flat plate, I need to still order the 1" pex parts to make this work for me.  Regular tee's?
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slimjim

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Re: Flat plate and sidearm water heater heat exchangers
« Reply #23 on: January 30, 2020, 01:29:41 AM »

I use mono flo tees but if you space regulars away from each other to promote flow, they will work.
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E Yoder

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Re: Flat plate and sidearm water heater heat exchangers
« Reply #24 on: January 30, 2020, 05:01:08 AM »

Or just send it all through if it's large enough.
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juddspaintballs

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Re: Flat plate and sidearm water heater heat exchangers
« Reply #25 on: January 30, 2020, 06:46:55 AM »

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RSI

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Re: Flat plate and sidearm water heater heat exchangers
« Reply #26 on: January 30, 2020, 05:12:09 PM »

That should be no problem putting in series. 30 plates have almost no head pressure drop. 20 plates are usually fine in series unless there are a lot of other restrictions in the system.  All the plates are in parallel so the more you have the less restriction you get.
If you had used a 10 plate then the monoflow tees would be needed or a much larger pump.

The size of the ports on a plate exchanger are usually not a bottleneck. Even 3/4" would not be a restriction unless you have full 1" iD or larger piping.
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E Yoder

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Re: Flat plate and sidearm water heater heat exchangers
« Reply #27 on: January 31, 2020, 06:27:40 AM »

Years ago I researched pressure drop on flat plates, and I would agree with RSI. I've used hundreds of 3x8 30 plate heat exchangers on systems requiring medium to lower flow rates/ smaller pumps and they've worked fine. 
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juddspaintballs

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Re: Flat plate and sidearm water heater heat exchangers
« Reply #28 on: January 31, 2020, 06:35:08 AM »

That's the way I'll do it, then.
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wreckit87

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Re: Flat plate and sidearm water heater heat exchangers
« Reply #29 on: January 31, 2020, 04:29:39 PM »

The pressure drop across a 3x8 30 plate is 17 feet of head at 7 GPM versus a 20 plate 5x12 with 2 feet of head at the same flow rate. A 3x8 will destroy the flow rate in any system if piped in series, and unless you're living in a doghouse you'll need more than 2 GPM. The extra $30 you spend on a 5x12 will be recovered in 2 months of electrical usage by using a smaller pump
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