Basic Principles of Auto AC

Subject: R12 Performance Chart Thu Aug 21, 2014 6:45 pm

R12 Performance Chart

Relative	Ambient		Low Side	Centre Duct		High Side
Humidity	Air Temp		Pressure	Temperature		Pressure
%	°F	°C	PSI	°F	°C	PSI
20	70	22	29	40	4	150
	80	27	29	44	7	190
	90	32	30	48	9	245
	100	38	31	57	14	305
30	70	22	29	42	6	150
	80	27	30	47	8	205
	90	32	31	51	11	265
	100	38	32	61	16	325
40	70	22	29	45	7	165
	80	27	30	49	9	215
	90	32	32	55	13	280
	100	38	39	65	18	345
50	70	22	30	47	8	180
	80	27	32	53	12	235
	90	32	34	59	15	295
	100	38	40	69	21	350
60	70	22	30	48	9	180
	80	27	33	56	13	240
	90	32	36	63	17	300
	100	38	43	73	23	360
70	70	22	30	50	10	185
	80	27	34	58	14	245
	90	32	38	65	18	305
	100	38	44	75	24	365
80	70	22	30	50	10	190
	80	27	34	59	15	250
	90	32	39	67	19	310
90	70	22	30	50	10	200
	80	27	36	62	17	265
	90	32	42	71	22	330

Subject: R-134a Performance Chart Thu Aug 21, 2014 6:46 pm

R-134a Performance Chart

Relative	Ambient		Low Side	Centre Duct		High Side
Humidity	Air Temp		Pressure	Temperature		Pressure
%	°F	°C	PSI	°F	°C	PSI
20	70	22	23	42	6	190
	80	27	30	50	10	250
	90	32	35	54	12	300
	100	38	37	57	14	330
30	70	22	23	42	6	200
	80	27	30	51	11	280
	90	32	35	55	13	310
	100	38	37	58	15	335
40	70	22	23	43	6	200
	80	27	31	52	11	285
	90	32	36	56	14	320
	100	38	43	64	18	370
50	70	22	23	43	6	200
	80	27	33	54	13	300
	90	32	39	60	16	340
	100	38	47	69	21	385
60	70	22	23	43	6	200
	80	27	36	56	14	315
	90	32	43	64	18	365
	100	38	55	78	26	375
70	70	22	26	46	8	240
	80	27	38	58	15	325
	90	32	47	67	20	380
	100	38
80	70	22	30	49	10	260
	80	27	40	60	16	340
	90	32	49	72	22	380
90	70	22	32	52	11	275
	80	27	41	62	17	345
	90	32

Guest

Exactly what I said!Bet you are a blast at a party.Lot of effort went into this and its easier for me to understand than the manual,thanks a bunch Dwayne!

Subject: Re: Basic Principles of Auto AC Fri Aug 22, 2014 6:50 am

Flasheroo wrote:: Exactly what I said!Bet you are a blast at a party.

Psst. See that guy all by himself in the corner, the one that came in the old station wagon? Don't make eye contact unless your AC is broken. He'll go on about it all night. Laughing

Actually, most of the work seemed to be getting the tables to format properly. Maybe the moderators could investigate TinyMCE for the WYSIWYG text editor at the next upgrade? Please?

Subject: Re: Basic Principles of Auto AC Fri Aug 22, 2014 9:14 am

I don't know if this is forum legal or not but Here is a great reference from www.AutoAcForum.com on what type of oil, and how much refrigerant is required for vehicles. It appears to be all inclusive. I used it as a guide when re-doing the retrofit on Ms. Roadie this summer.

http://www.autoacforum.com/speclisting.pdf

Mods if we can't link this info please just delete my entry on this thread thanks.

Subject: Re: Basic Principles of Auto AC Fri Aug 22, 2014 10:36 am

They got that listing from Four Seasons -- the numbers in the 2 right hand columns are Four Season's part numbers for oil. So they don't hold any copyright on the material.

A very useful forum though.

Subject: Re: Basic Principles of Auto AC Fri Aug 22, 2014 10:51 am

Thank you! Making a Sticky!

Chris

Subject: Re: Basic Principles of Auto AC Fri Aug 22, 2014 11:24 am

Informative thread, thank you for all the work!

As to the editor updates, those aren't controlled by us since this software is provided free.

Posts : 5848 Join date : 2008-12-28 Age : 114

so if my sponge is absorbing and is not compressed, do i need to flush?

Subject: Re: Basic Principles of Auto AC Fri Aug 22, 2014 4:45 pm

great thread, I only read a couple parts though as I've done at least 5 or 6 systems now. Interesting reading on the HC stuff...

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