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Speaking of quick cabin cool down and sub-freezing temperatures....
Provided your system has the "juice" to do so (a ready supply/surplus of liquid refrigerant) you can run sub-freezing temperatures for a goodly period, longer so with the blower speed on high. You just need a good sense for when to begin retarding the thermostat before the onset of condensate freezing. Most modern day heat pump systems in heating mode operate the evaporator well below freezing and then go into "defrost" mode once the evaporator is partially frozen over. |
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I like digital thermometers for air temperature FYI: YOU NEED TO SET THE SUPERHEAT on your TXV http://forums.pelicanparts.com/uploa...1429755255.jpg I really like the Taylor digital thermometers, they have one model that has on and off switch with NO auto switch timed out You can read the Taylor model number on the bottom one This Taylor Model is their original design and is very accurate for air vents; you used to be able to get this model at grocery stores all over the place but they are now harder to find @ grocery stores and now they mostly carry/sell auto off ones http://forums.pelicanparts.com/uploa...1429755532.jpg http://forums.pelicanparts.com/uploa...1429755605.jpg |
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sorry Dave I don't like being Falsely Slandered
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Dave I suggest you read and study about "thermal expansion valves and setting super heat"
IF your using one (hint hint) I live in the tropics in south Florida and we use A/C Almost ALL year we rarely use heaters LoL I will monitor your progress, your doing fine with what you have to work with; summers coming for you; here its been 89-90 already later gator |
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And while you're at it, stop falsely accusing me of "BS" - it makes you look foolish and desperate. |
ronnie your so called I have been educated is a bad joke on YOU
"You have been educated about your error on several occasions and persist in doing so" I am a well educated real Engineer with over 30 years experience and Federally Licensed by the EPA and Universally Certified in all types of Refrigerant Gases and and all type of refrigeration/air conditioning, etc among the many things I do. I DO NOT POST BS LIKE YOU DO, I never post lies! I AM NOT FALSELY ACCUSING YOU !!! YOU CLAIMED EXTENDED DRIVING @ 95 degrees ambient; 27.x degrees you get in your 911 A/C SYSTEM AIR VENT OUT PUT and YOUR EVAPORATOR DOES NOT FREEZE UP The ONLY thing you showed BESIDES YOUR EGO to back up this claim is a picture of an IR Temp Gun aimed into an air vent SEVERAL TIMES WITH NO OTHER PROOF WHATSOEVER! Your A/C Claim IS Thermodynamically IMPOSSIBLE for an automobile on earth, under the Laws of Thermodynamics! Therefore UNTIL YOU "PROPERLY PROVE" YOUR NUMBERS PUBLICLY AND YOUR BS CLAIM I am not going to drop it and will continue to haunt you with fact HERE AND CALL YOU A LIAR and I won't hold my breath! Prove me wrong on anything I say related to early model 911 A/C, don't get petty! PROVE YOUR NUMBERS AND YOUR CLAIM!!! I AM CALLING YOU OUT ON YOUR BS! |
George I had no intention to come here and damage your thread
Ronnie harassed me here first and I am not going to put up with it |
This isn't my thread, I think its Dave's.
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Most of us here have advanced degree designations, blah blah, ad nauseam. BFD. Who gives a flip? |
Remember to report abusive posts.
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Ha!!!
Bob, "The Mighty Pieholio" beneath your user handle = well done (and a big ole' boooo yaaaaa to Eric for that thar Pieholio wordage - too funny) !!!! |
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Sometimes. |
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NO engineer , no SANE one anyway, would bring forth a proposal like you have with your "REVERSE THE GASES" idea/(invention?) without at least one of the following. 1. Logical explanation of why you think it works the way you say. 2. Comparative testing results. 3. User contact or testimony. I took the time to make measurements since for me simple logic says this can't work. I took multiple airflow rate measurements across the bottom of the front lid condenser to come up with an average airflow. Same thing with the rear lid condenser with the engine at idle and no "WWESTED" airflow boost. Adjusted the result by the factor of the size of the rear lid condenser vs the front one. You saw the results. Any explanation to offer? |
Super Heat: Total System Superheat & Evaporator Superheat|Testo 550 Functions Part 1
<iframe width="640" height="360" src="https://www.youtube.com/embed/x-ooIJK72jI?feature=player_detailpage" frameborder="0" allowfullscreen></iframe>
REAL A/C EDUCATION! |
Hi guys,
Just a follow up: Today in Chicago it was 94 degrees. I parked the 911 in the sun and let it come up to oil temp. I turned on the a/c and put the interior fan speed on 3 (Hi). The port pressures were 30 PSI low and 160 PSI Hi. This was at 1500 RPM with the a/c temp control on max. The vent temps leveled off at 38 degrees with a digital temp probe. It was just too hot working in the engine compartment to fool around with turning off my fans, but that will be my next experiment. Overall I'm pretty happy with those numbers. Of course at low fan speed the vent temps drop to 33 degrees, but I'd rather have the air flow. Good luck, Dave |
Why 1500 RPM...? Mine idles at 800..
Any chance of testing with/without fans at 800 RPM..? Have you yet settled on a thermostatic switch close/open temperature range to power the fans? |
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