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Q Introduction of Refrigerant Gas R410a

A Basic Introduction of R410a Refrigerant Gas：

R410A: It is a new type of environmentally friendly refrigerant, does not destroy the ozone layer, the working pressure is about 1.6 times that of ordinary R22 air conditioners, and the cooling (heating) efficiency is high. R410A new refrigerant is composed of two quasi-azeotropic mixtures R32 and R125 each with 50%, mainly composed of hydrogen, fluorine and carbon elements (expressed as hfc), which is stable, non-toxic, and superior in performance. At the same time, since it does not contain chlorine, it will not react with ozone, that is, it will not destroy the ozone layer. In addition, the performance of air conditioners using new refrigerants will also be improved. R410A was once recognized internationally as the most suitable refrigerant to replace R22, and it has been popularized in Europe, America, Japan and other countries. R410A replaces the global trends in major international markets and the outlook for its use and the dynamics of entering the international market.

Physical Properties

R410A, is a kind of mixed refrigerant, it is a mixture composed of 50% R32 (difluoromethane) and 50% R125 (pentafluoroethane). Its advantage is that it can be used according to specific requirements, for various properties, such as Taking flammability, capacity, exhaust temperature and efficiency into consideration, a refrigerant is tailored.
R410A is colorless, non-turbid, volatile, boiling point -51.6℃, freezing point -155℃; its main characteristics are:

(1) Does not destroy the ozone layer. Its molecular formula does not contain chlorine, so its ozone depletion potential (ODP) is 0. The global warming factor (GWP) is 2025.

(2) Very low toxicity. The allowable concentration is 1000 ppm as R22.

(3) Non-flammable. The flammable polarity in the air is zero.

(4) High chemical and thermal stability

(5) The water solubility is almost the same as R22.

(6) It is a mixed refrigerant, composed of two refrigerants

(7) It is not compatible with mineral oil or alkylbenzene oil. (Compatible with POE[ester lubricant] and PVE[ether lubricant])

Physical Properties
Molecular Weight	72.58
Boiling Point	101.3KPa(° C) -51.6
Freezing Point	N/M
Density 30° C(kg/m3)	1038
Critical Temperature (° C)	72.5
Critical Pressure (MPa)	4.95
ODP	0
GWP	2000

Future Prospect of R410a

As people's awareness of environmental protection increases, people have higher and higher requirements for product environmental protection. Compressor refrigerants range from R12, R22, R134a, R407C to R410A, and people’s efforts to environmental protection have not changed. R410A is not the end of the development of environmentally friendly refrigerants but a new starting point. R410A does not harm the ozone layer, but has a higher greenhouse effect (GWP is 1730). People have begun to start with the greenhouse effect again, and introduced more environmentally friendly and efficient refrigerant compressors. R32 has a higher greenhouse effect (GWP is 670) and R290 (GWP is 3.3).

Quality Index
Purity	≥99.90%
Water content	≤0.001%
Acidity	≤0.00001%
Evaporation residue	≤0.01%
Chloride content	≤0.0001%
Appearance	Colorless and clear
Odor	Odorless

Q Introduction of Refrigerant Gas R404a

A

Basic Introduction of Refrigerant Gas R404a

R404A is a mixture of HFC125, HFC-134a and HFC-143. The ratio is R404A = 44% R125 + 4% R134A + 52% 143A. It is a colorless gas at room temperature, and a colorless and transparent liquid under its own pressure. R-404A is suitable for new commercial refrigeration equipment, transportation refrigeration equipment or renewal equipment at medium and low temperatures. Closest to R-502, this refrigerant is suitable for all environments where R-502 can operate normally.

Product name: R404A (R-404A)

Product Category: HFC

Chemical composition: pentafluoroethane/trifluoroethane/tetrafluoroethane mixture

Refrigerant R404A, alias R404A, product names include SUVA HP62, SUVA 404A, Genetron 404A, etc. As R404A belongs to the HFC-type non-azeotropic environmentally friendly refrigerant (completely does not contain ozone-depleting CFC, HCFC), it is currently recognized and recommended by most countries in the world as the mainstream low-temperature environmentally friendly refrigerant. Re-added during installation and maintenance. It complies with the standards of the US environmental protection organization EPA, SNAP and UL, and complies with the A1 safety level category of the American Society of Heating, Refrigeration and Air-Conditioning Engineers (ASHRAE) (this is the highest level and harmless to humans).

Physical Properties

Physical Properties
Molecular Formula	CHF2CF3/CF3CH2F/CH3CF3
Molecular Weight	97.6
Boiling Point	101.3KPa(° C) -46.60
Freezing Point
Density 30°C(kg/m3)	1017.2
Critical Temperature (°C)	72.1
Critical Pressure (MPa)	3.74
ODP	0
GWP	3800

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 R404a Refrigerant

As a widely used medium and low temperature refrigerant today, R404A is often used in cold storage, food freezing equipment, marine refrigeration equipment, industrial low temperature refrigeration, commercial low temperature refrigeration, transportation refrigeration equipment (refrigerated trucks, etc.), refrigerated condensing units, supermarket display cabinets Wait for refrigeration equipment.

Refrigerant R404A is the most common industry standard refrigerant (usually low temperature refrigeration system) to replace Freon R22 and R502 in newly installed refrigeration equipment. R404A is the closest to the operation of R-502, and it is suitable for all R-502 that can operate normally. Environment, R404A is recognized and used by most refrigeration equipment manufacturers in the world. However, because R404A is different from R502 and R22 in physical and chemical properties, theoretical cycle performance, and compressor oil, the after-sales maintenance of refrigeration equipment initially installed as R502 and R22 refrigerants, if you need to add or replace refrigerants, still Only R502 and R22 can be added, usually R404A cannot be used to replace R502 and R22 directly (that is, exchange-type replacement is usually not possible).

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 Introduction of Refrigerant Gas R32

A

Basic Introduction

Difluoromethane is an organic substance with a molecular formula of CH2F2 and a molecular weight of 52.02. It is a colorless gas and is partially miscible with water.

Used as a dry engraving agent, a substitute for low-temperature refrigerant R-502, or as a mixed refrigerant with HFC-134a and HFC-152a to replace HCFC-22

Chinese name Difluoromethane

CAS NO. 75-10-5

Chinese alias HFC-32

English name difluoromethane

English alias R-32

Molecular formula CH2F2

Molecular weight 52.02

CAS Number: 75-10-5

MDL number: MFCD00039283

EINECS number: 200-839-4

RTECS number: PA8537500

Physical Properties of R32 Gas

Physical property:
molecular formula	CH2F2
molecular weight	52.02
melting point,℃	-136
density(25℃) liquid, g/cm³	0.96
critical temperature,℃	78.52
critical density ,g/cm³	0.43
water solubility℃,W%	0.44
ODP	0
GWP	675

Quality Index of R32 Gas

Quality index
purity,%	above 99.93%
moisture,%	≤0.001
acidity,%	≤0.0001
evaporated residue,%	≤ 0.01
chloride (cl-)experiment	test permition
noncondensable gas(v/v),%	1.5
appearance	colorless transparent liquefied gas

Application of R32 Gas

Difluoromethane is a coolant with zero ozone depletion potential. Difluoromethane and pentafluoroethane can form a constant boiling mixture (called R-410A), which can be used as a substitute for chlorofluorocarbons (also known as Freon) in new coolant systems, mainly to replace HCFC-22 , As a compound medium and low temperature mixed refrigerant. Although it has zero ozone depletion potential, it has a high global warming potential, and its potential is 550 times that of carbon dioxide on a 100-year basis.

Q R22 Refrigerant Temperature and Relative Pressure

A

R22 Refrigerant Temperature and Relative Pressure
Temp.	Pressure kpa	Temp.	Pressure kpa	Temp.	Pressure kpa	Temp.	Pressure kpa	Temp.	Pressure kpa
-41	100	-17	274	7	622	31	1224	55	2176
-40	105	-16	285	8	642	32	1256	56	2230
-39	110	-15	296	9	661	33	1289	57	2274
-38	115	-14	307	10	682	34	1322	58	2326
-37	120	-13	318	11	703	35	1356	59	2377
-36	126	-12	330	12	724	36	1390	60	2429
-35	132	-11	342	13	745	37	1426	61	2482
-34	138	-10	354	14	768	38	1461	62	2535
-33	144	-9	367	15	790	39	1498	63	2590
-32	150	-8	380	16	813	40	1535	64	2646
-31	157	-7	394	17	837	41	1573	65	2702
-30	163	-6	407	18	861	42	1611
-29	170	-5	421	19	886	43	1650
-28	178	-4	436	20	911	44	1690
-27	185	-3	451	21	937	45	1731
-26	193	-2	466	22	963	46	1771
-25	201	-1	482	23	990	47	1814
-24	209	0	499	24	1017	48	1856
-23	218	1	515	25	1045	49	1900
-22	226	2	532	26	1073	50	1944
-21	236	3	549	27	1102	51	1989
-20	245	4	567	28	1132	52	2034
-19	254	5	585	29	1162	53	2081
-18	264	6	603	30	1193	54	2129
Temperature Unit: centigrade
Remark: 1KPa≈0.01kg/cm2=0.001MPa，1kg/cm2 ≈98.0665KPa≈0.1MPa

Q R134a Refrigerant Temperature and Relative Pressure

A

R134a Refrigerant Temperature and Relative Pressure
Temp.	Pressure kpa	Temp.	Pressure kpa	Temp.	Pressure kpa
-50	29.89	-9	208.76	31	792.43
-49	31.65	-8	217.04	32	815.28
-48	33.5	-7	225.57	33	838.63
-47	35.43	-6	234.36	34	862.47
-46	37.45	-5	243.41	35	886.82
-45	39.56	-4	252.73	36	911.68
-44	41.77	-3	262.33	37	937.07
-43	44.08	-2	272.21	38	962.98
-42	46.49	-1	282.37	39	989.42
-41	49.01	0	292.82	40	1016.4
-40	51.64	1	303.57	41	1043.9
-39	54.38	2	314.62	42	1072
-38	57.23	3	325.98	43	1100.7
-37	60.21	4	337.65	44	1129.9
-36	63.31	5	349.63	45	1159.7
-35	66.54	6	361.95	46	1190.1
-34	69.9	7	374.59	47	1221.1
-33	73.4	8	387.56	48	1252.6
-32	77.03	9	400.88	49	1284.8
-31	80.81	10	414.55
-30	84.73	11	428.57
-29	88.81	12	442.94
-28	93.04	13	457.68
-27	97.43	14	472.8
-26	101.99	15	488.29
-25	106.71	16	504.16
-24	111.6	17	520.42
-23	116.67	18	537.08
-22	121.92	19	554.14
-21	127.36	20	571.6
-20	132.99	21	589.48
-19	138.81	22	607.78
-18	144.83	23	626.5
-17	151.05	24	645.66
-16	157.48	25	665.26
-15	164.13	26	685.3
-14	170.99	27	705.8
-13	178.08	28	726.75
-12	185.4	29	748.17
-11	192.95	30	770.06
-10	200.73
Temperature Unit: centigrade
Remark: 1KPa≈0.01kg/cm2=0.001MPa，1kg/cm2 ≈98.0665KPa≈0.1MPa

Q R290 Refrigerant Temperature and Relative Pressure

A

R290 Refrigerant Temperature and Relative Pressure
Pressure kpa	Temp.	Pressure kpa	Temp.
℃	kg/cm²	℃	kg/cm²
-42.412	1	40.959	14
-32.818	1.5	42.495	14.5
-25.451	2	43,993	15
-19.382	2.5	45.455	15.5
-14.176	3	46.882	16
-9.5889	3.5	48.277	16.5
-5.4707	4	49.642	17
-1.7215	4.5	50.977	17.5
1.7287	5	52.285	18
4.931	5.5	53.566	18.5
7.9241	6	54.822	19
10.738	6,5	56.054	19.5
13.396	7	57.262	20
15.918	7.5	58.449	20.5
18.318	8	59.614	21
20.611	8.5	60.759	21.5
22.806	9	61.884	22
24.914	9.5	62.991	22.5
26.942	10	64.079	23
28.897	10.5	65.15	23.5
30.785	11	66.204	24
32.611	11.5	67.241	24.5
34.38	12	68.263	25
36.096	12.5
37.763	13
39.383	13.5

Temperature Unit: centigrade

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

Q R600a Refrigerant Temperature and Relative Pressure

A

R600a Refrigerant Temperature and Relative Pressure
Temp.	Pressure kpa	Temp.	Pressure kpa	Temp.	Pressure kpa	Temp.	Pressure kpa	Temp.	Pressure kpa
-50	0.0168	-10	0.108	14	0.252	38	0.511	70	1.087
-45	0.0221	-9	0.113	15	0.261	39	0.524	75	1.21
-40	0.0287	-8	0.117	16	0.27	40	0.538	80	1.344
-35	0.0367	-7	0.122	17	0.277	41	0.552	85	1.487
-30	0.0466	-6	0.127	18	0.287	42	0.566	90	1.642
-29	0.049	-5	0.131	19	0.294	43	0.581
-28	0.051	-4	0.133	20	0.305	44	0.596
-27	0.054	-3	0.142	21	0.313	45	0.612
-26	0.056	-2	0.147	22	0.324	46	0.628
-25	0.058	-1	0.152	23	0.332	47	0.645
-24	0.061	0	0.158	24	0.344	48	0.661
-23	0.064	1	0.164	25	0.353	49	0.679
-22	0.067	2	0.168	26	0.365	50	0.69
-21	0.07	3	0.176	27	0.375	51	0.709
-20	0.072	4	0.182	28	0.385	52	0.727
-19	0.076	5	0.187	29	0.398	53	0.746
-18	0.079	6	0.195	30	0.408	54	0.766
-17	0.082	7	0.201	31	0.419	55	0.786
-16	0.085	8	0.208	32	0.43	56	0.799
-15	0.09	9	0.215	33	0.445	57	0.82
-14	0.093	10	0.222	34	0.457	58	0.842
-13	0.097	11	0.229	35	0.469	59	0.856
-12	0.1	12	0.237	36	0.481	60	0.894
-11	0.105	13	0.245	37	0.494	65	0.974

Temperature Unit: centigrade

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

Q R410a Refrigerant Temperature and Relative Pressure

A

R410a Refrigerant Temperature and Relative Pressure
Temp.	Pressure kpa	Temp.	Pressure kpa	Temp.	Pressure kpa	Temp.	Pressure kpa	Temp.	Pressure kpa
-65	0.052	-39	0.188	-13	0.52	13	1.18	39	2.35
-64	0.054	-38	0.196	-12	0.538	14	1.22	40	2.41
-63	0.057	-37	0.206	-11	0.556	15	1.25	41	2.46
-62	0.061	-36	0.215	-10	0.579	16	1.28	42	2.51
-61	0.064	-35	0.224	-9	0.598	17	1.32	43	2.58
-60	0.068	-34	0.235	-8	0.618	18	1.35	44	2.65
-59	0.072	-33	0.243	-7	0.639	19	1.4	45	2.71
-58	0.076	-32	0.255	-6	0.66	20	1.44	46	2.77
-57	0.08	-31	0.264	-5	0.682	21	1.47	47	2.84
-56	0.084	-30	0.275	-4	0.705	22	1.52	48	2.91
-55	0.089	-29	0.286	-3	0.728	23	1.56	49	2.98
-54	0.093	-28	0.298	-2	0.752	24	1.6	50	3.05
-53	0.098	-27	0.311	-1	0.777	25	1.64	51	3.1
-52	0.103	-26	0.324	0	0.803	26	1.68	52	3.18
-51	0.108	-25	0.334	1	0.823	27	1.73	53	3.25
-50	0.113	-24	0.348	2	0.851	28	1.78	54	3.32
-49	0.119	-23	0.363	3	0.879	29	1.82	55	3.4
-48	0.125	-22	0.375	4	0.903	30	1.88	56	3.48
-47	0.131	-21	0.391	5	0.937	31	1.91	57	3.54
-46	0.138	-20	0.404	6	0.962	32	1.96	58	3.63
-45	0.144	-19	0.424	7	0.994	33	2.03	59	3.72
-44	0.151	-18	0.435	8	1.02	34	2.08	60	3.78
-43	0.157	-17	0.453	9	1.05	35	2.13	61	3.9
-42	0.165	-16	0.468	10	1.09	36	2.18	62	3.97
-41	0.172	-15	0.483	11	1.11	37	2.24
-40	0.181	-14	0.504	12	1.15	38	2.29

Temperature Unit: centigrade

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

Q R404a Refrigerant Temperature and Relative Pressure

A

R404a Refrigerant Temperature and Relative Pressure
Temp.	Pressure kpa	Temp.	Pressure kpa	Temp.	Pressure kpa	Temp.	Pressure kpa	Temp.	Pressure kpa
-60	0.05	-31	0.2	-2	0.569	27	1.31	56	2.63
-59	0.053	-30	0.208	-1	0.588	28	1.36	57	2.68
-58	0.056	-29	0.217	0	0.608	29	1.39	58	2.74
-57	0.059	-28	0.226	1	0.628	30	1.43	59	2.81
-56	0.062	-27	0.235	2	0.645	31	1.46	60	2.86
-55	0.066	-26	0.243	3	0.665	32	1.5	61	2.93
-54	0.069	-25	0.253	4	0.687	33	1.53	62	2.98
-53	0.072	-24	0.264	5	0.71	34	1.57	63	3.05
-52	0.076	-23	0.275	6	0.73	35	1.61	64	3.13
-51	0.08	-22	0.284	7	0.752	36	1.66	65	3.19
-50	0.084	-21	0.296	8	0.777	37	1.69	66	3.26
-49	0.089	-20	0.306	9	0.8	38	1.73	67	3.31
-48	0.093	-19	0.318	10	0.823	39	1.78	68	3.4
-47	0.098	-18	0.33	11	0.85	40	1.82	69	3.45
-46	0.103	-17	0.343	12	0.872	41	1.87	70	3.54
-45	0.108	-16	0.354	13	0.9	42	1.91	71	3.6
-44	0.112	-15	0.368	14	0.923	43	1.96	72	3.69
-43	0.118	-14	0.381	15	0.95	44	2.03	73	3.75
-42	0.124	-13	0.394	16	0.978	45	2.06	74	3.81
-41	0.129	-12	0.407	17	1.01	46	2.09	75	3.87
-40	0.136	-11	0.424	18	1.04	47	2.15
-39	0.141	-10	0.438	19	1.06	48	2.2
-38	0.149	-9	0.453	20	1.09	49	2.25
-37	0.155	-8	0.468	21	1.12	50	2.29

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 R410a

Q Introduction of Refrigerant Gas R404a

Q Introduction of Refrigerant Gas R407c

Q Introduction of Refrigerant Gas R32

Q R22 Refrigerant Temperature and Relative Pressure

Q R134a Refrigerant Temperature and Relative Pressure

Q R290 Refrigerant Temperature and Relative Pressure

Q R600a Refrigerant Temperature and Relative Pressure

Q R410a Refrigerant Temperature and Relative Pressure

Q R404a Refrigerant Temperature and Relative Pressure

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