R134A Pressure-Temperature Chart

Hello, readers welcome to the new post. here we will discuss R134A Pressure-Temperature Chart. R134a refrigerant is ethane-based hydrofluorocarbon used in a different type of refrigeration instrument, HVAC, and in vehicles. it is used as a replacement for R12 refrigerant and is considered a safe option due to its non-toxic and non-flammable features. It does not get corroded. Here we will make its pressure temperature charge for further understanding. let’s get started with the R134A Pressure-Temperature Chart.

What Is R134a Refrigerant Gas?

The R134a refrigerant gas has a 1,1,1,2-Tetrafluoroethane chemical name and is called HFC-134a which is hydrofluorocarbon gas.

It can used with a compressor through the use of polyol ester lubricant. It can cause zone depletion and global warming

Its main features that are used in different industries as a refrigerant are high thermal stability, non-inflammable, and non-toxic.

R-134a (psig) Pressure-Temperature Chart
Temp. (°F)	Pressure (psig)	Temp. (°F)	Pressure (psig)	Temp. (°F)	Pressure (psig)	Temp. (°F)	Pressure (psig)
-49	18.4	1	7.0	51	46.6	101	126.3
-48	18.0	2	7.5	52	47.7	102	128.4
-47	17.6	3	8.0	53	48.9	103	130.6
-46	17.3	4	8.5	54	50.0	104	132.8
-45	16.9	5	9.1	55	51.2	105	135.0
-44	16.5	6	9.6	56	52.4	106	137.2
-43	16.1	7	10.2	57	53.6	107	139.5
-42	15.7	8	10.8	58	54.9	108	141.7
-41	15.2	9	11.3	59	56.1	109	144.0
-40	14.8	10	11.9	60	57.4	110	146.4
-39	14.4	11	12.5	61	58.7	111	148.7
-38	13.9	12	13.1	62	60.0	112	151.1
-37	13.4	13	13.8	63	61.3	113	153.5
-36	13.0	14	14.4	64	62.7	114	156.0
-35	12.5	15	15.0	65	64.0	115	158.4
-34	12.0	16	15.7	66	65.4	116	160.9
-33	11.4	17	16.4	67	66.8	117	163.5
-32	10.9	18	17.0	68	68.2	118	166.0
-31	10.4	19	17.7	69	69.7	119	168.6
-30	9.8	20	18.4	70	71.1	120	171.2
-29	9.3	21	19.1	71	72.6	121	173.8
-28	8.7	22	19.9	72	74.1	122	176.5
-27	8.1	23	20.6	73	75.6	123	179.1
-26	7.5	24	21.3	74	77.1	124	181.8
-25	6.9	25	22.1	75	78.7	125	184.6
-24	6.3	26	22.9	76	80.2	126	187.4
-23	5.7	27	23.7	77	81.8	127	190.2
-22	5.0	28	24.5	78	83.4	128	193.0
-21	4.3	29	25.3	79	85.0	129	195.8
-20	3.7	30	26.1	80	86.7	130	198.7
-19	3.0	31	26.9	81	88.4	131	201.6
-18	2.3	32	27.8	82	90.0	132	204.6
-17	1.5	33	28.6	83	91.8	133	207.6
-16	0.8	34	29.5	84	93.5	134	210.6
-15	0.1	35	30.4	85	95.2	135	213.6
-14	0.4	36	31.3	86	97.0	136	216.7
-13	0.7	37	32.2	87	98.8	137	219.8
-12	1.1	38	33.1	88	100.6	138	222.9
-11	1.5	39	34.1	89	102.5	139	226.0
-10	1.9	40	35.0	90	104.3	140	229.2
-9	2.4	41	36.0	91	106.2	141	232.5
-8	2.8	42	37.0	92	108.1	142	235.7
-7	3.2	43	38.0	93	110.0	143	239.0
-6	3.6	44	39.0	94	112.0	144	242.3
-5	4.1	45	40.1	95	114.0	145	245.7
-4	4.6	46	41.1	96	115.9	146	249.1
-3	5.0	47	42.2	97	118.0	147	252.5
-2	5.5	48	43.2	98	120.0	148	255.9
-1	6.0	49	44.3	99	122.1	149	259.4
0	6.5	50	45.4	100	124.2	150	262.9

Properties of R134a Refrigerant

The main features of R134a refrigerant are listed here
its boiling point is -14.9°F (-26.1°C)
its critical temperature is 252°F (122°C)
Auto ignition temperature value is 1,418°F (770°C)
Ozone depletion level (ODL) is zero 0
Global warming potential (GWP) value is1,430

Properties	Details
Ozone Depletion Level	0
Cylinder Color Code	Light Blue
Auto-ignition Temperature	770 degrees Celsius.
Flammability (1 standard atmospheric pressure. , 18 °C)	Non-flammable
Critical Pressure	4060.3-kilo pascal
Global warming potential GWP	1200
Solubility In Water	0.11% by weight at 77°F
Boiling Point	-14.9°F
Molecular weight	102
Auto-Ignition Temperature	1418°F
Critical Temperature	252°F

Alternate for R12 Refrigerant

As R134a refrigerant comes with less volume as compare to refrigerant and charge required for accurate configuration when retrofitting a unit from R12 to R134a. The unit normally needs to modified for accommodation of the new refrigerant. Such as there is a need to reconfigure the condenser and evaporate in the unit and install small-size hoses.

What is the chemical name for R134a refrigerant?

1,1,1,2-Tetrafluoroethane is called norflurane (INN), R-134a, Freon 134a, Klea 134a, Forane 134a, Genetron 134a, Green Gas, Florasol 134a, Suva 134a, HFA-134a, or HFC-134a) is a hydrofluorocarbon (HFC) and haloalkane refrigerant with thermodynamic properties similar to R-12

Is R134a refrigerant CFC free?

R132a also called tetrafluoromethane, is a hydrofluorocarbon (HFC) refrigerant and is a replacement for R-12 CFC (chlorofluorocarbon) refrigerants for cooling applications.

What are the advantages of R134a refrigerant?

R134a is an HCFC refrigerant that is used in automotive air conditioning systems. R134a’s advantages are good thermal stability and non non-corrosiveness, with low toxicity.

How does R134a work?

The process started with a compressor where it compressed R134a from low-pressure gas to high-pressure hot vapor. Hot vapor flows through coils known as condensers that condense vapor to liquid by dissipating heat in hot gas.

Is R134a a gas or liquid?

The R134A is a nonflammable gas that is used as a refrigerant for maintaining a cool temperatue as part of a refrigeration system.

What is the color of R134a?

light blue

Is R134a flammable?

For normal conditions, R134A is a non-flammable gas tha shows an explosion range at a higher oxygen value than air. For high temperature and pressure, R134a has an explosion range in the air without any high oxygen percentage.

Why R134a is not used in AC?

R134a system works at high discharge side pressure that R12 can casues compressor seals to leak. Lower line R134a is normally not cooled like R12. With that, there are lubricant problems. Since AC compressor comes with movable components that need oil.

What is the difference between r134 and R134a?

The main difference between the two components is how atoms are connected to make a chemical compound. R134a is an isotope that is designed with the letter a. While for r134, the same type and amount of atoms are used that are connected differently (CF3-CH2F)

What is better than R134A?

R290 is used as a low global warming potential replacement for refrigerant R22, R-404, & R-134a for certain applications.

Is R134A a pure refrigerant?

The refrigerant can be either pure compounds or a mixture of two or more refrigerants. Such as pure refrigerants are R12, R22, and R134a.

How long does R134a last?

The shelf life of Freon 134a is about ten years for normal storage conditions. The cylinder must be stored in a clean dry location that is safe from sunlight. Storage must be less than 126 °F (52 °C). Cylinders must be protected from mechanical damage due to improper handling.

What oil is used in R134a?

Polyelkylene Glycol (PAG)

What is the critical temperature of R134a?

The auto-ignition temperatue is 1418 degrees Fahrenheit or 770 degrees Celsius. The critical temperature of R134a is 252 degrees Fahrenheit or 122 degrees Celsius. Read our Engineering Blogs

R134a Refrigerant Gas Application

The R134a refrigerant gas is best to use in compressors like Rotary compressors, screw compressor due to having a good coefficient.

it also used for industirs, refrigeration and used in chillers, Central air conditioning system.

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What Is R134a Refrigerant Gas?