AC Varible Orifice Valve
Thread Starter
Safety Car
Joined: Feb 1999
Posts: 3,504
Likes: 4
From: Mexico Beach FL
AC Variable Orifice Valve
Here is an interesting three part article on the newer "variable orifice valves" (VOV) -- it is somewhat technical, but good information.
These valves are a drop-in change for the existing fixed orifice valves in most automotive AC systems.
http://www.imcool.com/articles/aircondition/VOV1.htm
Tom Piper
These valves are a drop-in change for the existing fixed orifice valves in most automotive AC systems.
http://www.imcool.com/articles/aircondition/VOV1.htm
Tom Piper
Last edited by Tom Piper; Jun 14, 2006 at 08:23 AM.
Team Owner
Joined: Oct 2000
Posts: 96,443
Likes: 9
From: Fort Knox, KY
Cruise-In IV Veteran
Cruise-In VI Veteran
Cruise-In VII Veteran
Cruise-In VIII Veteran
They've been out for at least a year. I remember reading about them last summer when I was doing some A/C repair work on my Vette.
Le Mans Master
Joined: Dec 2000
Posts: 7,839
Likes: 22
From: San Diego, Ca
Most of the pros on the Board at www.ackits.com say they're junk. Don't know of any OEM that uses them either. GM's variable displacement compressor (here's a brief overview: http://www.findarticles.com/p/articl...4/ai_n13780360 ) approaches it from a somewhat different angle, but of all the systems I've owned, that's been the only one that never gave me any problems (and it's nice to have something that never cycles).
Le Mans Master
Joined: Dec 2000
Posts: 7,839
Likes: 22
From: San Diego, Ca
Originally Posted by Alvin
IT would be neat to see some sort of modern safer version of a lithium bromide ac used on auto's to make use of all the waste heat.
Drifting
Joined: May 2003
Posts: 1,730
Likes: 1
From: Charlotte NC
St. Jude Donor '05
Look up lithium bromide, ice from fire, or adsorbtion cycle refrigerators and you'll find a bunch of info. They have been around for along time. The problem is it could blind someone.
We did a few projects where we where able to run a fairly nice sized adsorbtion cycle refrigerator off the exhaust of a typical household gas water heater.
We did a few projects where we where able to run a fairly nice sized adsorbtion cycle refrigerator off the exhaust of a typical household gas water heater.
Racer
Joined: Jul 2002
Posts: 275
Likes: 13
From: South Bend, Indiana
See my post under the "134 Super" title. It's been about 3 years since I installed a varible orifice tube. I did it at the same time of the Freeze 12 conversion, so I don't know how it relates to the final performance of the system but I couldn't be happier. Many thanks to Sun CR for the guidence in getting the system going, but note he wasn't the one who recommended the Freeze 12.
