huge oven 10x5x24 propane

[Chevota]

^^^ not bad, seems like the 300,000 btu one you have coming should work nice. Got any pics of your heater setup?

Jim

[monsterfabrication]

friday my heater comes in and ill have it up and running this weekend

[Chevota]

Any updates? Did you get it working?


Jim

[monsterfabrication]

yes i got it working i got the oven to 350 the other day then the heater whent out i had a 100lbs tank and it froze up solid so i call blue star gas and leased a 250 gallon tank and ordered 2 more 300,000 btu heaters because the staker went out of one heater and i want to heat it up in 20 mints i got both heaters today i opened on up it works awsome got up to 400 dgrees in 30 minits with one heater i will hook both up once my new tank is installed behind my shop i coated a little metal part to see how it would work it came out good .
my oven burns about 4 gallons an hour per buner so with both runing it will be about 8 gallons an hour but they dont run constent they only run when the oven get to temp then they shut off till the oven drops 5 degrees
the heaters have silaniods already in the so my oven just shuts off the power to the heaters when it hits temp and tuns on the heaters when the oven drops

[FigureLLC]

what are you paying per gallon?

[monsterfabrication]

215 a gallon

[Chevota]

Nice!!!!!!!!!!!!! Glad to here it works!!

What will you be coating in that huge oven? I want to go big and will as soon as i have the room but those dimensions are huge....

Jim

[CRayGill]

Chevota: Look at post #1 of this thread, he tells all there:

im building a 10x5x24 foot oven that will be propane powerd like big toys but with 3 150 btu air forced heaters .
I built my frame out of 3x3 3/16 wall tubing im going to use 22 gage hot roll steel inside and out the reason im build a big oven is that im moving and ther is not a powder coater a around for 50 miles and i build drive way gates that are about 8 feet tall . i know it sound like i made the frame a little over kill but i had it layin around from a job I will post some pics soon of it so you can see my build and give me adivice on the way too

[CRayGill]

Monster, I'm used to "normal" paint booths, so when I saw the "afterburner heater," I panicked- thinking explosion from the fumes! Then I remembered that there are no explosive fumes in a powder coat oven!
That got me to thinking (OH NO!)
Considering that I'm an HVAC tech with access to natural gas burners every day and twice on Sunday, I'm wondering if I could simply build an oven about 3' long, 2' wide and 2' tall with a couple of burner bars in bottom? I'd place a flat sheet of metal for flame blocking above the burners, ala' gas oven in the kitchen, and use the thermocouple/thermostat gas valve from a gas oven to boot? Semi-precise temp control, easy hookup (at least for me,) cheap as hell to build ($50-75, my cost for everything except the oven body,) cheap as hell to run (NG is about 1/3 the cost per BTU of electricity around here,) and finally; fast heating compared to electricity!
It would basicly be a monster-sized gas oven without the burners. And, as I'd install demand ignition, there wouldn't even be the waste of pilot light gas... Still in the $50-75 range, and the body would only cost around $50, double walled, insulation between. Around $100-125 finished, ready to use: Does anyone know if this is this an acceptible price range for an oven of this size or am I better off to purchase one from a supplier?
Monster, I love your oven (too big for me, but a marvel in it's own right!) so you are my new answer man, sorry for the luck!
C.Ray

[SCOTTRODS]

Monster, I'm used to "normal" paint booths, so when I saw the "afterburner heater," I panicked- thinking explosion from the fumes! Then I remembered that there are no explosive fumes in a powder coat oven!
That got me to thinking (OH NO!)
Considering that I'm an HVAC tech with access to natural gas burners every day and twice on Sunday, I'm wondering if I could simply build an oven about 3' long, 2' wide and 2' tall with a couple of burner bars in bottom? I'd place a flat sheet of metal for flame blocking above the burners, ala' gas oven in the kitchen, and use the thermocouple/thermostat gas valve from a gas oven to boot? Semi-precise temp control, easy hookup (at least for me,) cheap as hell to build ($50-75, my cost for everything except the oven body,) cheap as hell to run (NG is about 1/3 the cost per BTU of electricity around here,) and finally; fast heating compared to electricity!
It would basicly be a monster-sized gas oven without the burners. And, as I'd install demand ignition, there wouldn't even be the waste of pilot light gas... Still in the $50-75 range, and the body would only cost around $50, double walled, insulation between. Around $100-125 finished, ready to use: Does anyone know if this is this an acceptible price range for an oven of this size or am I better off to purchase one from a supplier?
Monster, I love your oven (too big for me, but a marvel in it's own right!) so you are my new answer man, sorry for the luck!
C.Ray

This is a great idea IF..... You can garantee no burn byproducts in the oven....

Best is to do a heat exchenager set-up similar to your gas Farnaces for homes..... yet hot enough to sure powder. This should be easy with your technical skills and all.... It's just best to NOT introduce anything that could potentially contaminate the coating during cure.