Comparison of R290 and R1270 with other refrigerants

Vapour pressure curves of R290 and R1270 compared with R22 and HFC refrigerants
Volumetric refrigerating capacity of various refrigerants compared with R290 at identical suction gas volume flows
Suction gas volume flow of various refrigerants compared with R290 at identical refrigerating capacities
Mass flow of various refrigerants compared with R290 at identical refrigerating capacities
Properties of R290 and R1270 compared with R22 and HFC refrigerants

Symbol

R290

R1270

R600

R600a

R22

R404A

R410A

R134a

M

Molecular mass

g/mol

44.1

42.1

58.1

58.1

86.5

97.6

72.6

102

K

Isentropic exponent at 20°C, 1013 mbar

cp/cv

1.13

1.15

1.11

1.09

1.18

1.12

1.17

1.11

tn

Normal boiling point

°C

-41.6

-47.6

-0.5

-11.6

-40.8

-46.2

-51.4

-26.1

ρ

Density of the liquid

kg/dm3 (40°C)

0.47

0.48

0.55

0.53

1.13

0.97

0.98

1.15

p

Vapour pressure -10°C

bar

3.42

4.30

0.70

1.08

3.54

4.34

5.72

2.01

p

Vapour pressure +40°C

bar

13.7

16.5

3.78

5.3

15.3

18.2

24.1

10.2

tcr

Critical temperature

°C

96.8

91.1

152.0

134.7

96.1

72

71.3

101.1

pcr

Critical pressure

bar

42.6

45.5

38.0

36.3

49.9

37.3

49

40.7

LFL

Lower flammability limit

% by volume

1.7

1.8

1.4

1.5

-

-

-

-

UFL

Upper flammability limit

% by volume

10.8

11.2

9.5

12.5

-

-

-

-

AEL

Toxicity

ppm

1000

1000

1000

1000

1000

1000

1000

1000

ODP

Ozone depletion potential

0

0

0

0

0.055

0

0

0

GWP

Global warming potential

3

3

4

3

1810

3922

2088

1430

Global warming potential: according to IPCC IV (time horizon 100 years), also basis for the EU F-Gas Regulation 517/2014.

Liquid volume flow of various refrigerants compared with R290 at identical refrigerating capacities