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Q Introduction of Refrigerant Gas R407c

A Basic Introduction of Refrigernat Gas R407c

R407c is a mixture of R32 refrigerant and R125/refrigerant plus R134a refrigerant in a certain proportion. It is an environmentally friendly refrigerant that does not destroy the ozone layer.

R407C has very similar characteristics and performance to R22, so it has become a long-term alternative to R22 and is used in various air conditioning systems and non-centrifugal refrigeration systems.

R407C can be used in the original R22 system without redesigning the system. It only needs to replace a few parts of the original system, and replace the mineral refrigerating oil in the original system with a lubricating oil (POE oil) that is miscible with R407C, and then it can be directly filled R407C, realize the environmental protection replacement of the original equipment.

Since R407C is a mixed non-azeotropic working fluid, in order to ensure that its mixed composition does not change, R407C must be filled in a liquid state. If refrigerant leakage occurs in the R407C system and the performance of the system changes significantly, the remaining R407C in the system cannot be recycled and reused. The remaining R407C refrigerant in the system must be emptied and recharged with new R407C refrigerant.

Physical Properties

Physical Properties
Molecular Formula	CH2F2 CF3CHF2 CH2FCF3
Molecular Weight	86.2
Boiling Point	-43
Freezing Point	not determinded
Critical Temperature (° C)	86.74
Critical Pressure (MPa)	4.619
ODP	0
GWP	1700

Quality Index

Quality Index
Purity	≥99.90%
Water content	≤0.001%
Acidity	≤0.00001%
Evaporation residue	≤0.01%
Chloride content	N/M
Appearance	Colorless and clear
Odor	Odorless

Application of Refrigerant Gas R407c

R407C is a ternary non-azeotropic refrigerant introduced as a substitute for R22. In actual replacement, you only need to replace the lubricating oil, change its dryer and other minor parts. In order to improve the easy decomposition of ester oil into residues, additives are often added to the system. When in use, in order to give full play to its advantages, it is best to choose a counterflow heat exchanger. In addition, the area of the condenser and the flow rate of the cooling medium also increase. R407c also has the characteristics of cleanliness, low toxicity, non-combustibility, and good cooling effect, and is widely used in the air conditioning industry.

Q R407c Refrigerant Temperature and Relative Pressure

A

R407c Refrigerant Temperature and Relative Pressure
Temp.	Pressure kpa	Temp.	Pressure kpa	Temp.	Pressure kpa	Temp.	Pressure kpa
-56	0.050	-25	0.219	6	0.669	37	1.60
-55	0.053	-24	0.228	7	0.690	38	1.64
-54	0.056	-23	0.224	8	0.712	39	1.69
-53	0.059	-22	0.248	9	0.734	40	1.73
-52	0.062	-21	0.257	10	0.757	41	1.78
-51	0.066	-20	0.267	11	0.780	42	1.82
-50	0.069	-19	0.278	12	0.804	43	1.87
-49	0.073	-18	0.288	13	0.829	44	1.91
-48	0.077	-17	0.300	14	0.855	45	1.95
-47	0.081	-16	0.311	15	0.875	46	2.00
-46	0.085	-15	0.321	16	0.902	47	2.05
-45	0.089	-14	0.336	17	0.939	48	2.11
-44	0.094	-13	0.349	18	0.959	49	2.16
-43	0.098	-12	0.360	19	0.989	50	2.21
-42	0.103	-11	0.374	20	1.02	51	2.26
-41	0.108	-10	0.389	21	1.04	52	2.31
-40	0.113	-9	0.401	22	1.08	53	2.37
-39	0.119	-8	0.417	23	1.11	54	2.42
-38	0.124	-7	0.429	24	1.14	55	2.48
-37	0.130	-6	0.446	25	1.17	56	2.54
-36	0.136	-5	0.464	26	1.21	57	2.59
-35	0.142	-4	0.478	27	1.23	58	2.65
-34	0.149	-3	0.497	28	1.27	59	2.72
-33	0.155	-2	0.516	29	1.30	60	2.78
-32	0.162	-1	0.532	30	1.33
-31	0.170	0	0.549	31	1.37
-30	0.177	1	0.566	32	1.41
-29	0.185	2	0.588	33	1.45
-28	0.194	3	0.606	34	1.49
-27	0.201	4	0.625	35	1.52
-26	0.209	5	0.649	36	1.57

Temperature Unit: centigrade

Remark: 1KPa≈0.01kg/cm2=0.001MPa，1kg/cm2 ≈98.0665KPa≈0.1MPa

An Encyclopedia on Refrigerant Gas Knowledge

Classification

Q Introduction of Refrigerant Gas R407c

Q R407c Refrigerant Temperature and Relative Pressure

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