[TELECOM Digest Editor's Note: A water cooler with a DC motor is
> interesting; but did you ever see a _refrigerator_ powered by -gas-
> rather than -electricity-? I had one of those in a long since for-
> gotten apartment in Chicago back in the 1960's. No motor of course, no
> compressor, etc, but it was a refrigerator, freezer, etc, and I think
> (cannot remember for sure) it was manufactured by 'Frigidaire
> Company'. Totally silent of course. I have no idea how it worked; if
> I ever knew, I have since forgotten. PAT]
I encountered a gas refrigerator on a trip out West back in 1966 or so. The place we stayed had only recently got AC power so the gas refrigerator made sense. It seemed to be cold and freeze water just like any other refrigerator. Being 9 or 10 years old at the time I was fascinated that a device could be built that could make cold using only a flame. My dad had seen such things before and was not surprised, he told me there were even kerosene refrigerators at one time.
Anyway Google "absorption cycle" if you want to know the history and how it works. Here's one example:
Dave Grebe
[TELECOM Digest Editor's Note: But I have heard that when a gas leak is suspected, one should _never_ use a telephone in the vicinity as there is a remote chance of a spark hitting the gas and causing an explosion. PAT]