Yes, a big by-product of combustion is water and the way to avoid getting
the cabin walls and overhead covered in condensation is something like
Sean's solution or some other vented method.
Someone did a stoichiometric equation once, demonstrating the amount of
water produced per pound of propane....pretty interesting:
With perfect combustion of propane and oxygen,
One Propane molecule five oxygen molecules
C3H8 + 5O2
becomes (sorry about the lack of subscripting)
three carbon dioxides four waters
3CO2 + 4H2O
Or, put another way and figuring the weight of the molecules, if you burn a
pound of propane you get over 1 1/2 pounds of water! (the increase is due
to the oxygen that joins in)
Of course, that is assuming perfect combustion, which you won't quite get.
Tod Mills
M17 #408, 1987 galley model
BuscaBrisas
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Larry E
Yake
Sent: Wednesday, September 26, 2007 8:02 PM
To: [email protected]
Subject: Re: M_Boats: Heater
I tried the same heater, Tod, but found that having the hatch open far
enough to make me satisfied I wasn't going to suffocate let in more cold
air than the heater could warm up.
I didn't realize catalytic heaters produced moisture. It would be nice
to find something that helped eliminate condensation while warming the
cabin.
Larry
On Wed, 26 Sep 2007 18:40:06 -0400 <[EMAIL PROTECTED]> writes:
> I tried a Coleman SportCat catalytic heater, but the amount of water
> vapor
> produced negated the benefits of some heat, I thought, so I quit
> using it.
>
>
> Tod Mills
> M17 #408, 1987 galley model
> BuscaBrisas
>
>
>
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of
> [EMAIL PROTECTED]
> Sent: Wednesday, September 26, 2007 9:41 AM
> To: [email protected]
> Subject: M_Boats: Heater
>
> Yes it's true,
>
> Sleeping on the boat while it was on the trailer (boat is unable to
> weather
>
> vane) the wind came up pretty strong from the stern. Our CO alarm
> did go
> off
> even though the heater was outside. We finally figured out the wind
> must
> have
> been blowing across the heater and up to the weather boards allowing
> a
> little exhaust in?? Turned the trailer around, aired out the boat,
> reset
> the
> alarm, and didn't have any other problems. As long as the heater is
> outside,
> and
> I have the CO alarm inside I feel comfortable. But that's just me.
> You have
>
> to make your own decision. I know a lot of folks that "crack" the
> hatch and
> use
> things like Origo heat pals or Coleman catalytic heaters inside.
> That I
> wouldn't be comfortable with. You'll have to make your own call.
>
> Gary's advice is sound. You can't get CO poisoning if you don't make
> any
> CO!
>
>
>
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