Date: Fri, 23 Dec 2016 11:32:28 -0800
Reply-To: Brett Ne <brettn777@GMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Brett Ne <brettn777@GMAIL.COM>
Subject: Re: More Mr heater..Now Friday
In-Reply-To: <432B3B25-ADD9-4542-81F7-9F8F20CA3A36@shaw.ca>
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I can think of two reasons why the stove may give the impression that it
gives off more water vapor than a catalytic heater. First is location.
The stove is located at the same level as, and within a foot of, the
windows. Water vapor given off from the stove's combustion is still very
concentrated and very close to at least the side window, whereas a heater
is typically closer to the center of the van and near the floor, giving
it's water vapor space and time to disperse before coming in contact with
cold, outside surfaces. Second, the stove is almost always heating
something with water content, further adding water vapor to the inside of
the van in addition to what's coming from the combustion process.
Brett
On Fri, Dec 23, 2016 at 10:08 AM, Alistair Bell <albell@shaw.ca> wrote:
> It does produce moisture as I explained in previous post. If you have
> proof that no moisture is produced then get busy and write a paper. It's
> going to upset a lot of chemistry.
>
> :-)
>
> Combustion of a hydrocarbon in an oxygen containing atmosphere does
> produce water vapour. I bet you don't see that water vapour coming out of
> the tail pipe of your van when the van is warmed up. But you sure see it
> when it's cool outside and the van has just been started. And in really
> cold places, and I've seen this in Edmonton, you get quite thick clouds of
> ice crystals at stop lights from the car exhausts.
>
> Stick a cold bit of aluminum , like a 1/2" thick plate , above the heater.
> Before the plate heats up above the dew point at that position, you'll see
> moisture on the plate.
>
> Actually it really doesn't matter if people don't believe the chemistry
> involved, you can believe what ever you like. That's been human nature for
> ever. I just find it hard to understand that in 2016 most people still
> don't have a grasp of science that was done way back beginning with
> Lavoisier et al.
>
> Alistair
>
> > On Dec 23, 2016, at 8:57 AM, Dan N <dn92610@GMAIL.COM> wrote:
> >
> > I am not sure that the Mr Heater produces vapor or steam. I have 2. Yes
> > there's condensation on the propane bottle when in use but not vapor from
> > the radiant heat. I think the interior of the van and other stuff in the
> > van contain a small percentage of humidity and the heat from the heater
> > makes the humidity evaporate.
> > Similar to hanging a wet cloth or a wet towel in front of the heater...
> > steam will come out of it
>
--
Brett in Portland, OR
"Albert" '82 VanaFox I4 Riviera
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