Not a math guy, help me out

djheater

Lifer
Mar 19, 2001
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How long will it take to boil 5 gallons of water on my stove?
This is a home brewing thread in disguise. I'm trying to figure out if I can fully boil my wort indoors, or if it's simply not possible.

I've been poking at this and now have myself thoroughly confused.
I have a nice stove with a 16000 btu burner

Assuming a starting temp of 50 degrees

1 calorie will raise 1 gram of water 1 degree Celsius.
40 pounds = 18 143.6948 grams
18,143.6948 x (100 -10) = 1632932.532 calories

16 000 btu = 4.68913712 kilowatt hours
1 kWh = 860424.76302468 calories Then:

1632932.532/860424.763 = 1.8978214

So then is it 4.68913712 kilowatt hours\1.8978214 ???

The available output of the burner being 4.68913712 divided by the calories needed?

So 2.47 hours?

That seems reasonable... Thanks for reading this far. My head hurts.
 

Eli

Super Moderator | Elite Member
Oct 9, 1999
50,422
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Well..

It only takes 5 minutes for my stove to boil ~3 quarts of water.

So I calculate approximately 1hr, 40 minutes. ;) lol
 

jlee

Lifer
Sep 12, 2001
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I'm afraid I can't really help you..but did you figure in ongoing heat loss?
 

Rubycon

Madame President
Aug 10, 2005
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You've forgotten a few things.

Water quality, barometric pressure average, material the containment vessel is made of, etc. ;)
 

djheater

Lifer
Mar 19, 2001
14,637
2
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Originally posted by: CadetLee
I'm afraid I can't really help you..but did you figure in ongoing heat loss?

Hell no.

Though I'll likely have the water at room temperature now that I think of it... that should accomodate a little. I also sincerely doubt I get a sustained 16000 btu's out of that burner.. :p
 

Cristatus

Diamond Member
Oct 13, 2004
3,908
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Originally posted by: MS Dawn
You've forgotten a few things.

Water quality, barometric pressure average, material the containment vessel is made of, etc. ;)

You always have something baffling to say, don't you!? Lol

Anyways, 2.47? I don't know if that answer is right/wrong, but I think it would be better if you rounded up the answer to 3 hours because of some of the stuff that MS Dawn mentioned, and, not to forget what CadetLee see about heat loss.
 

djheater

Lifer
Mar 19, 2001
14,637
2
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Originally posted by: MS Dawn
You've forgotten a few things.

Water quality, barometric pressure average, material the containment vessel is made of, etc. ;)

meh, at this point if my figure is accurate I'll take the ball and run with it.
If it had been 15 hours or something I'd just buy a turkey fryer and be done with it.
 

Fullmetal Chocobo

Moderator<br>Distributed Computing
Moderator
May 13, 2003
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Use a turkey frier! (parents did that when the water heater died for a while. Works great for heating large amounts of water)
 

djheater

Lifer
Mar 19, 2001
14,637
2
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Originally posted by: Fullmetal Chocobo
Use a turkey frier! (parents did that when the water heater died for a while. Works great for heating large amounts of water)

/blows smoke from finger...
 

Rubycon

Madame President
Aug 10, 2005
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Propane turkey fryers are fast because they have HUGE burners! We're talking 250mbh!

NEVER put oil in them though. Without a FSG the oil can reach ignition point FAST and this can burn down your barn!
 

djheater

Lifer
Mar 19, 2001
14,637
2
0
Originally posted by: MS Dawn
Propane turkey fryers are fast because they have HUGE burners! We're talking 250mbh!

NEVER put oil in them though. Without a FSG the oil can reach ignition point FAST and this can burn down your barn!

That's kind of the hobby standard... But hell we have the stove anyway 'figured maybe it would be worth something...

We also have a tall tub 3 shelf dishwasher with a sanitize cycle, the dish racks come out very easily leaving a flat bottom rack that I can fit two plastic bucket fermenters on, I was really excited when I figured this out.

<--- dork
 

Rubycon

Madame President
Aug 10, 2005
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Originally posted by: djheater

We also have a tall tub 3 shelf dishwasher with a sanitize cycle, the dish racks come out very easily leaving a flat bottom rack that I can fit two plastic bucket fermenters on, I was really excited when I figured this out.

<--- dork

Those are super low watt density elements and because the line circuit is restricted to 20A for heat dry/preheat load water, the max input is always less than 1.6 kW. That's much lower than what your LP/NG 16mbh stove burner will do.