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Old 09-07-2017, 06:32 PM
Jordan Kube Jordan Kube is offline
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Recuperated glory hole

This is a recuperated glory hole project I'm doing with Marcel Braun. He hasn't really been active here in awhile but some of you may remember his postings a few years back about oxygen boosting his gloryhole so he could work borosilicate offhand. It's worked out quite well for him but he was in need of a smaller one. I believe his current setup uses 5 gallons of propane an hour and half a large dewer of liquid oxygen a session. I felt like there was some low hanging fruit in building a recuperated burner for the next one.

The dimensions are 12" by 21" inside. The burner is a two burner system with the flue in between the burners. The glory hole is made of Greencast 94 and Mizzou. I think the Mizzou is going to melt, but we will see. It is too hot for platinum thermocouples so we are backing one out into the wall and using the reading in a relative manner.

We're taking it out to East Coast Melt next week and will be doing murrine pulls and other stunts out of it. I'll report back my findings.
Attached Images
File Type: jpg burner mold resize.jpg (83.7 KB, 74 views)
File Type: jpg Marcel's ghole resize.jpg (80.4 KB, 72 views)
File Type: jpg Marcel's ghole 2 resize.jpg (81.1 KB, 66 views)
File Type: jpg Marcel's ghole 3 resize.jpg (73.8 KB, 58 views)
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Last edited by Jordan Kube; 09-07-2017 at 06:35 PM.
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Old 09-07-2017, 07:17 PM
Rick Kellner Rick Kellner is online now
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Pretty wild, and with the usual impressive fabrication qualities.

Interesting that you mention the relative thermocouple set up. I had been thinking about doing something like that and wondered why it doesn't seem to be used more often as a way to minimize thermocouple expense for furnaces. It seems as though you could establish some parameters initially with spot checks, then downgrade to a type K, stuck farther back in the wall reading a relative benchmark. Might be a good way to economize on a ghetto wire melter, at a minimum.
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Old 09-07-2017, 10:26 PM
Dan Vanantwerp Dan Vanantwerp is offline
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Wow. nice design and execution.

I wonder...is it time to start considering another fuel to crank things up for boro...hydrogen maybe? Sooo clean!

I read about a vehicle made by GM the military ordered that ran on hydrogen produced from water.

We're getting there...sustainable energy. Probably a couple/few generations away but it's coming.
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Old 09-09-2017, 10:20 PM
Cecil McKenzie Cecil McKenzie is offline
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"It seems as though you could establish some parameters initially with spot checks, then downgrade to a type K, stuck farther back in the wall reading a relative benchmark. Might be a good way to economize on a ghetto wire melter, at a minimum." Rick Kellner

Rick .... My furnace was originally controlled with a Honeywell dialapak controller. Strictly set point and used k type only. I had it set so it went within 1 inch of the inside of the furnace. 1950 was about 2050 if I remember right. I started out using just k wire and mullite tubes. Worked pretty well . When they started to go bad the furnace got a little too hot and when they failed completely the furnace shut off when the controller maxed out After a number of years i learned about heavier k type thermocouples. They lasted much longer but reacted pretty much the same.

Now I have different controller and platinum . Has not worn out at 2250.
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Old 09-10-2017, 04:25 AM
Paul Hayworth Paul Hayworth is offline
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look at Hotwork Recuperative Burner HRB
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Old 09-10-2017, 08:09 AM
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Pete VanderLaan Pete VanderLaan is offline
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you might consider MORCO95 as the castable of choice Jordan. From Missouri Refractories Co and available from High Temp in Fenton MO. I've yet to see anything as good.
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Old 09-13-2017, 08:17 AM
Jordan Kube Jordan Kube is offline
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I have to say I couldn't have done this without the kind and generous Hugh Jenkins. His guidance and support has been invaluable.
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Old 09-13-2017, 02:23 PM
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Pete VanderLaan Pete VanderLaan is offline
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Quote:
Originally Posted by Jordan Kube View Post
I have to say I couldn't have done this without the kind and generous Hugh Jenkins. His guidance and support has been invaluable.
********
And that's extremely well said, Thank You! Hugh is a Lion in this world and it's always good to see attribution for the shoulders you get to stand on..
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