Philip Poburka on sat 9 mar 02
Natural Gas if it is cold may not 'rise' so quickly as if it were the same
temperature as the ambient air.
Phil
ell vee
----- Original Message -----
From: "Craig Clark"
To:
Sent: Saturday, March 09, 2002 1:38 PM
Subject: Re: propane: oooopppps. Had it backwards
> OOOOOOpppppps, I did indeed have it wrong. Somehow I reversed what was
> told to me, by my wife Ruth who teaches chemistry and is currently
laughing
> at me, and stated that natural gas is heavier than propane. As has been
> pointed out on the list by Juan et. all it is the opposite. A quick check
of
> our handy dandy periodic table bears this out when comparing molar mass.
> I still have the question that I posited earlier. Why did the pretty
> blue flame burn closely to our kitchen floor that night when the house
> almost burned? The source of fuel for the flame was natural gas. Shouldn't
> it have risen?
> Craig Dunn Clark
> 619 East 11 1/2 st
> Houston, Texas 77008
> (713)861-2083
> mudman@hal-pc.org
> ----- Original Message -----
> From: "Hank Murrow"
> To:
> Sent: Saturday, March 09, 2002 12:51 PM
> Subject: Re: propane
>
>
> > >Dear dear people,
> > >
> > >I suppose it is worth rubbing this in a bit. Even if propane only
stays
> > >put for a few minutes, someone else may come along, not knowing it is
> > >there, and decided to throw a cigarette on the floor, or something
> equally
> > >innocent and stupid. It's very similar to another
> > >everyday hazard that we all ignore, mostly without incident: gasoline
> > >(petrol, benzina) vapours. They are heavier than air, mostly invisible
> > >(sometimes you can see them like heat waves, as their index of
refraction
> > >is so different from that of air) very easily ignited, and they will
pool
> > >in any depression or closed space for quite a time.
> > >Gavin
> >
> >
> > Dear propane folks;
> >
> > The glass facility at Penland deliberately designed their
building
> > with a grate-covered trench under the furnaces just to catch any leaking
> > fuel. At the ends of the trench there was an open exit to the outdoors.
No
> > pooling, no danger. Good design. Potters might take a leaf from their
> book.
> >
> > Cheers, Hank
> >
> >
>
____________________________________________________________________________
> __
> > Send postings to clayart@lsv.ceramics.org
> >
> > You may look at the archives for the list or change your subscription
> > settings from http://www.ceramics.org/clayart/
> >
> > Moderator of the list is Mel Jacobson who may be reached at
> melpots@pclink.com.
>
>
____________________________________________________________________________
__
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or change your subscription
> settings from http://www.ceramics.org/clayart/
>
> Moderator of the list is Mel Jacobson who may be reached at
melpots@pclink.com.
Craig Clark on sat 9 mar 02
OOOOOOpppppps, I did indeed have it wrong. Somehow I reversed what was
told to me, by my wife Ruth who teaches chemistry and is currently laughing
at me, and stated that natural gas is heavier than propane. As has been
pointed out on the list by Juan et. all it is the opposite. A quick check of
our handy dandy periodic table bears this out when comparing molar mass.
I still have the question that I posited earlier. Why did the pretty
blue flame burn closely to our kitchen floor that night when the house
almost burned? The source of fuel for the flame was natural gas. Shouldn't
it have risen?
Craig Dunn Clark
619 East 11 1/2 st
Houston, Texas 77008
(713)861-2083
mudman@hal-pc.org
----- Original Message -----
From: "Hank Murrow"
To:
Sent: Saturday, March 09, 2002 12:51 PM
Subject: Re: propane
> >Dear dear people,
> >
> >I suppose it is worth rubbing this in a bit. Even if propane only stays
> >put for a few minutes, someone else may come along, not knowing it is
> >there, and decided to throw a cigarette on the floor, or something
equally
> >innocent and stupid. It's very similar to another
> >everyday hazard that we all ignore, mostly without incident: gasoline
> >(petrol, benzina) vapours. They are heavier than air, mostly invisible
> >(sometimes you can see them like heat waves, as their index of refraction
> >is so different from that of air) very easily ignited, and they will pool
> >in any depression or closed space for quite a time.
> >Gavin
>
>
> Dear propane folks;
>
> The glass facility at Penland deliberately designed their building
> with a grate-covered trench under the furnaces just to catch any leaking
> fuel. At the ends of the trench there was an open exit to the outdoors. No
> pooling, no danger. Good design. Potters might take a leaf from their
book.
>
> Cheers, Hank
>
>
____________________________________________________________________________
__
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or change your subscription
> settings from http://www.ceramics.org/clayart/
>
> Moderator of the list is Mel Jacobson who may be reached at
melpots@pclink.com.
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