Posted by admin on Thursday, May 28, 2009 · Leave a Comment
I have built a propane fired foundry to melt and recast aluminum. It works well except that it uses too much fuel and I don't like to have my propane tank refilled all of the time. My wife is a tight wad and I can not often come up with the cash to refill my propane tank. So, I would like to change my foundry over to electric. I have searched the web and see some plans for sale. The plans are for an electric "bertha" furnace using resistance wire and contollers. I guess this would be okay but I don't have all of the technical data that I feel I need and I don't have the money to purchase many supplies and expensive controllers and I refuse to buy the plans over the internet. I am sure that there is someone out there that will give the info. for free. Also, I have a 160 amp arc welder, could I use that some how to remake my propane furnace into an electric arc furnace?
The problem I'm trying to overcome here is the money needed just for the energy. I'm concerned that, if the little woman is fussing now about a $16 tank of propane, what will be her reaction if all of a sudden an electric bill for $600 shows up? I would estimate that the price per watt of propane should not be too different than that of electricity. a lot of factors come into play here, like -
Also, there is a definite limit as to how much energy you can draw from the lines. For example, you might have to limit to 240V, 50A, which is 12 kilowatts. I don't know if that's enough energy for your needs, but I can tell you that such a draw would cost about $1-2 per hour.
I do have a book in storage on building kilns, if you want I can take a look at it - email me if yes.
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