On Aug 31, 10:57 am, Gunner wrote:
On Fri, 31 Aug 2007 08:32:35 -0600, Lew Hartswick





wrote:
Gerald Miller wrote:
On Thu, 30 Aug 2007 20:23:22 -0700, wrote:

I've several old engineering manuals that put ammonia gas as #1 for
overall efficiency. Nasty stuff, but still used for large warehouse
and ice-making operations. Also biodegradeable and ozone-friendly.
You probably won't find the information you need out of a catalog,
efficiency depends on a lot of things, one reason the books are so
thick...

Stan

But have you ever been near a leaking SO2 system?
Gerry :-)}
London, Canada

Back when I was in grade school (1940s) a family had one (household
refrigerator using amonia) leak, fortunately only the pet (forget
what kind of pet) was home. Did it in. Nasty stuff to breathe.
...lew...

The reefer here in my RV was ammonia charged. Blew a fitting about a
year ago (which is why its now my dry storage).

Prior to that..Id had an ant problem here in the RV park.

Havent seen an ant, spider, moth, roach or any other critter since
then inside the RV.

Nasty!

Gunner- Hide quoted text -

- Show quoted text -

Most of the RV fridges are absorption types, can use propane or
electric heaters to do the boiling. Active stuff is ammonia gas,
water and a little hydrogen. Uses heat of solution rather than heat
of vaporization. Not as efficient and doesn't work at as high a
pressure as compressor-type ammonia systems. Also needs to be held
level to work. But well-suited for the purpose, no electric current
needed and it's quiet.

Stan