Date: Mon, 24 Jul 2006 15:43:48 -0700
Reply-To: Matthew Bulley <funadoring1@YAHOO.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Matthew Bulley <funadoring1@YAHOO.COM>
Subject: Re: Propane fired airconditioning
Content-Type: text/plain; charset=iso-8859-1
Subsequent thread comments centered on replacing the
refrigerant with
propane. If I understand John's original post, he
isn't seeking a variant on
R-12/R-22/R-134 systems, but a system that uses
propane as the FUEL.
Yes, CERVIL is the leading name I recognize in propane
fired refridgeration,
as we have a vacation home with no electricity, and a
1940's era CERVIL
fridge/freezer. Works by the same process as the West
Fridge on propane,
just bigger.
As for an actual AC, I'd look at the stuff for cooling
deliver vehicles and
over-the-road trucks. Most are diesel fired;
converting diesel through a
piston/compression ignition engine to spin a
traditional compressor +
evaporator/condenser combination. This type of diesel
is fairly receptive
(at least theoretically) to conversion to gas
(propane) firing. I know a lot
of the city busses in Baltimore run on natural gas.
At one point when I was reading up on such things in
books on
compression-ignition engines from the 1930's-1960's, I
read about gas fired
engines, and at that time, a "carrier-oil" was
required to make the system
work. The gas (propane, NG, etc) was pulled in as a
predictable quantity
with the air as an air-fuel mixture, like in a
spark-ignition engine. The
carrier oil was injected, just as in a traditional
diesel, and served to
ignite the gas/air mixture which had a higher
flash/compression-ignition
point.
Okay... so the thought is this... there ARE
diesel-fired cooling systems;
florists, local fish salesmen, and ice cream guys have
them all the way down
to "delivery van" size.
Have a great day!
Matthew
-----Original Message-----
From: Vanagon Mailing List
[mailto:vanagon@gerry.vanagon.com] On Behalf Of
John Rodgers
Sent: Monday, July 24, 2006 12:37 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Propane fired airconditioning
The current thread dealing with battery power for the
refrigerator
brought the above subject to mind..
The propane/115v refrigerator/freezer I had in my
motor home some years
back was outstanding. When running on propane, it
never let me down. Nor
did it on 115V electricity, either. It was not made to
use battery power
in any way. And that thing would freeze a halibut
solid as a block of
tombstone granite..
So my question is, if there are propane fired
refrigeration units that
work well, can there not be a propane fired AC unit
somewhere,
CERVEL(Cervil?), or some other brand. If not, could
one be cobbled
together with parts from a propane fired fridge. After
all, they aren't
much more than a coil, a fan, and a heating unit. It
seems to me if the
shape was right, it would work great as a cooler for
the camper on the
weekend outing.
Ideas, comments, slams??
Regards,
John Rodgers
88 GL Driver.
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