Which Fridge? Advice Needed !

"Jon" <[email protected]> wrote in message
news:[email protected]...
> Thanks for this, that means that i am either going to need another
> battery or a gas bottle for when i havent got an electric hook-up.
>
> Having not used gas appliences before, especially portable ones,
> please bear with me!
>
> When using gas, Im assuming that they need some sort of flue, or at
> least to be well in a well vented area?? Would it be safe to leave it
> on gas in a tent whilst we where sleaping or would we not wake up
> again??!! Im thinking Carbon Monoxide and other such nasties..

My folks used to take us on motorcaravan holidays every year. It had a
similar Elextrolux fridge which required a flue terminal out the side of the
van for gas running.
In theory, if running correctly it should only produce carbon dioxide and
water, but you could always extend the vent pipe out a window or under the
tent.
The small bottles of gas last a very long time, especially if you remember
to switch to 12v when driving and keep the cooking sensible.
Regards
David

On or around Wed, 08 Sep 2004 14:56:39 +0100, Jon
<[email protected]> enlightened us thusly:

>Thanks for this, that means that i am either going to need another
>battery or a gas bottle for when i havent got an electric hook-up.
>
>Having not used gas appliences before, especially portable ones,
>please bear with me!
>
>When using gas, Im assuming that they need some sort of flue, or at
>least to be well in a well vented area?? Would it be safe to leave it
>on gas in a tent whilst we where sleaping or would we not wake up
>again??!! Im thinking Carbon Monoxide and other such nasties..

I'd expect the thing to come with full instructions, but normally, yes, they
have a vent to the outside. If it's anything like the mains gas fridge me
grandma used to have, it works by using the gas as a working fluid in the
refrigeration system, and then has a little flame to burn the gas off. In
an electric system the depressurising of the working fluid extracts heat
from the surroundings and repressurising it again creates heat, hence a) the
compressor in the fridge and b) the radiator on the back which gets warm.

gas one loses the compressor and radiator and wastes the gas it's
depressurised from the gas supply, normally this gets burnt, hence the flue
outlet on such fridges. I assume that a dual-purpose one either has a means
of changing the routing of the working fluid so that it either recompresses
it or burns it, or, more likely perhaps, it has 2 complete systems.

Austin Shackles wrote:

> gas one loses the compressor and radiator and wastes the gas it's
> depressurised from the gas supply, normally this gets burnt, hence the flue
> outlet on such fridges. I assume that a dual-purpose one either has a means
> of changing the routing of the working fluid so that it either recompresses
> it or burns it, or, more likely perhaps, it has 2 complete systems.

They're normally a closed system full of (IIRC) ammonia that is heated
by the burning gas (or electric element when on 12V) and that cools when
it has a change of state inside the fridge. Simple, inefficient and
fairly much indestructible. The do however have to be perfectly level
(or very close to) and not moving about to get decent cooling.


--
EMB
change two to number to reply

In news:[email protected],
Tim Hobbs <[email protected]> blithered:
> AaF?

Back to front!

--
UR SHGb02+14 &ICMFP
If at first you don't succeed,
maybe skydiving's not a good idea!

EMB wrote:

> They're normally a closed system full of (IIRC) ammonia that is heated
> by the burning gas (or electric element when on 12V) and that cools when
> it has a change of state inside the fridge.

Its called an absorption refrigerator, and the ammonia is dissolved in water

http://www.nh3tech.org/absorption.html

Its very very clever !

Steve

On Tue, 07 Sep 2004 21:32:20 GMT, [email protected] wrote:

>
>
>Have a look for a Waeco - surprised they haven't been mentioned as
>they are *supposed* to be one of europes biggest sellers.

That's the 'Combi - Cool ' etc isn't it Jason?

We nearly bought one when I wasn't sure if the second hand Camping Gaz
one was working properly on gas (would go out on 'low' and smelled
'fumey' when tested indoors.

I stripped, cleaned, re lubed and re-assembled the fridge gas mech..
It now stays on on 'low' and the fuming seems to be better (less ?<g>
but still present). Could be the 'newness' burning off ..

Anyway, we had it on gas in the small porch awning for 3 days with a
monoxide alarm beside it and there were no 'bleeps' ..

All the best ..

T i m