Building a Gas Fired Oven?

[Guest]

Ok guys, I am planning to build an oven sometime in the (hopefully near) future. I have read a lot of Juan's thread about his oven and it turned out awesome. I would like to do a similar structure, but switch out the heat source with gas. I was also hoping to see what it would take to build the oven up to spec to do ceramics (this would just be a plus, not a necessity).

Now I have some questions on what the requirements are for gas fired Powder ovens. How does the flame need to be separated from the inner area? Are flue gasses ok to come in contact with the curing fumes? I know there can't be a direct open flame in the oven chamber (with the parts). But just for sake of clarity, If I had a setup like below, would this cause an explosion? If that would be the case, I was thinking I could run two separate sets of burners. One set inside the oven to bring it up to temp QUICK, load the parts, then another set not in the oven chamber to maintain the temp. My dad is an engineer and has offered to help with designing/building this. As long as I get my facts straight so we can figure out how things need to be setup. Thanks in advance for all the help

[Guest]

Re: Building a Gas Fired Oven?

No one has any input?

[rbroker]

Re: Building a Gas Fired Oven?

Why?

LOL, electric is readily available with the quirks already worked out for you. Seems like wasted time/energy.

[Guest]

Re: Building a Gas Fired Oven?

Looking at your diagram I'm assuming this oven is no bigger than 6x3x3 feet. If that is the case, I really can't see the advantage of going with a gas powdered oven. Unless there's a great cost benefit for doing gas in your specific case, I suggest sticking with electricity. It will be less complicated, probrably cheaper, and from what I've read it will be safer as well.

You will need a big metal box with good insulation, heating elements, a way to control these elements, and a supply of 240v electricity.

[Guest]

Re: Building a Gas Fired Oven?

Why?

LOL, electric is readily available with the quirks already worked out for you. Seems like wasted time/energy.

Wrong, electric may be readily available, but it is expensive. And actually, for me, gas is readily available and technically free. I have a well on our property. We don't even use half of our allotted amount of gas. Using gas over electric would pay for the difference in oven construction in no time. Also, gas produced MUCH more heat MUCH faster. I have been reading and a lot of the electric ovens I have seen don't go past 450-500. And they take 20-30 minutes to come up to temp.

Someone has to have a gas fired oven.

Juan]Looking at your diagram I'm assuming this oven is no bigger than 6x3x3 feet. If that is the case, I really can't see the advantage of going with a gas powdered oven. Unless there's a great cost benefit for doing gas in your specific case, I suggest sticking with electricity. It will be less complicated, probrably cheaper, and from what I've read it will be safer as well.

You will need a big metal box with good insulation, heating elements, a way to control these elements, and a supply of 240v electricity.

There you go. How long does your oven take to get up to temp? Just curious.

[tedsfab]

Re: Building a Gas Fired Oven?

3x3x6 about 10 minutes to 400 degs .

the average oven using electric with about 5kw will use roughly .50-65 cents to run an hour . this is an average across the nation . we did this check a few months ago . thats not that bad considering if you have a 220v compressor in your shop thats an electric animal.

[BClapp]

Re: Building a Gas Fired Oven?

see my post on diy oven thread

[Guest]

Re: Building a Gas Fired Oven?

I have a home brewed 4X4X6 foot oven that is heated via a propane torpedo heater. Look at your drawing and where you have the heater replace that with the torpedo heater and a piece of duct work. I will warn you that it sounds like a jet taking off when on high. Takes about 7 min to get the oven to 400 and a 50lb propane tank cost me about 40 bucks to fill and lasts well that is a good question no idea on how long it lasts if I had to guess I would say I could run the oven for 40 or so hours straight before needing a fill up. It does take babysitting the parts because you have to manually turn the heater on and off. You can wire in a thermostat and thermocouple from a propane oven to controll the heater the only problem is that on my heater there is a type of primer that you have to hold in while hitting the ignitor. If I can come up with some type of of electronic valve to controll the primer and ignitor via the thermostat.

****Warning any and all information above is to be used at own risk****

[Guest]

Re: Building a Gas Fired Oven?

I have a home brewed 4X4X6 foot oven that is heated via a propane torpedo heater. Look at your drawing and where you have the heater replace that with the torpedo heater and a piece of duct work. I will warn you that it sounds like a jet taking off when on high. Takes about 7 min to get the oven to 400 and a 50lb propane tank cost me about 40 bucks to fill and lasts well that is a good question no idea on how long it lasts if I had to guess I would say I could run the oven for 40 or so hours straight before needing a fill up. It does take babysitting the parts because you have to manually turn the heater on and off. You can wire in a thermostat and thermocouple from a propane oven to controll the heater the only problem is that on my heater there is a type of primer that you have to hold in while hitting the ignitor. If I can come up with some type of of electronic valve to controll the primer and ignitor via the thermostat.

****Warning any and all information above is to be used at own risk****

You need to look at what fires the new type gas ovens and you might have your part? My daughter said she couldn't get the oven to come on and that she had to use a match to light the burners on top!!! I pulled to stove out and plugged in the 110 cord and all was fine and back to work? If I remember right. When you did the top burners you mashed down and turned and they would light. Not real sure about the oven but something has to re light it when it cuts off and then comes back on to hold the temp.

Some one on here or EW uses the Gas Radiant Heater type mounted on the top of the oven and had sent me some links or told me that Granger had about any size I needed but they are not cheep any more as when he bought his. I don't remember who and how now? You could do a search on this one or EW for gas oven and look for my name I guess?

gas Infrared Heater

http://www.grainger.com/Grainger/wwg/pr ... submit.y=6