On Tue, 3 May 2011 20:18:09 -0400, "Wilbur Hubbard"
wrote:


Duh. WAKE UP. The refrigerant is hot or warm in the orifice in the choke
point. It's still compressed there. Ain't no way ice is going to form there.
Debris blocking it maybe; ice - NO! Only when the refrigerant exits the
choke point and begins to expand does it get cold enough to freeze water.
This happens AFTER the choke point and not at the choke point.

Is everybody on RBC stupid? Are they all Bruce in Bangkok clones or
something?



Wilbur Hubbard


Jesus but you are stupid. Or perhaps you didn't read this part in your
magazine. But in an attempt to educate (yes I know pearls before
swine) you I'll tell you what happens.

The expanding gas decreases in both pressure and temperature rapidly
and is cold enough to freeze water. As you rightly note the
temperature in the entire capillary tube, actually an orifice in
practice, is not cold enough to form ice however at the point of
pressure drop it certainly is. Whether the blockage actually takes
place at the beginning of the tube or at the end of the tube is
immaterial, it happens, the tube is blocked, and the symptoms are
certainly familiar to what the O.P. noted.

I'm amazed at your lack of knowledge about refrigeration systems. You
certainly don't have experience with anything more sophisticated then
a kitchen fridge. Certainly nothing as complex as an automobile
air-con which, along with all of the more efficient systems, uses an
expansion valve rather then the rudimentary capillary tube and I might
point out that water in a system with an expansion valve acts exactly
as the O.P. stated.

As a wise man once said, "it is better to remain silent and be thought
a fool then to open one's mouth and prove it."

Cheers,

Bruce
(bruceinbangkokatgmaildotcom)