Daikin EUWA(*)100JX [129/145] Characteristics

Daikin EUWA(*)100JX [129/145] Characteristics
ESIE97–02 Refrigerant R134a
Part 4 – Commissioning and Test-Run 4–13
3.3 Characteristics
Characteristic table The following table shows the characteristics for R134a:
Data R134a versus
R12
The following table compairs the working values of R134a with R12.The used symbols are:
compression ratio: p
c
/p
o
volumetric refrigerating effect: q
0,th
compressor discharge: t
h
coefficient of performance (COP):
k
Description
Chemical formula CH
2
F-CF
3
Chemical designation 1.1.1.2-terrafluoroethane
Molar mass g/mol 102.03
Boiling point at 1.013bar °C -26.2
Freezing point °C -101
Critical temperature °C 40.64
Critical pressure (abs) bar 0.508
Critical density kg/l 1.26
Specific heat capacity of the liquid (boiling point) kJ/(kg.K) 215.5
Heat of vaporization (boiling point) kJ/kg 14.9
Surface tension (boiling point) mN/m 1.377
Density of the liquid at boiling point kg/l 1.207
Density of the liquid at 25°C kg/l 1.093
Isentropic exponent (30°C,1.013bar) x 2.2
Solubility in water (25°C,1bar) g/kg 1.7
Dynamic viscosity (25°C) boiling liquid mPa.s 0.205
Dynamic viscosity (25°C) saturated vapour mPa.s 0.012
Thermal conductivity (25°C) boiling liquid mW/(m.K) 82.3
Thermal conductivity (25°C) saturated vapour mW/(m.K) 14.3
R134a R12
t
o
p
c
/p
o
q
0,th
t
h
k
t
o
p
c
/p
o
q
0,th
t
h
k
°C
kJ/m
3
°C °C
kJ/m
3
°C
-25 9.51 748 59.1 2.8 -25 7.78 822 62.6 2.9
-20 7.63 942 57.7 3.2 -20 6.37 1012 60.8 3.3
-15 6.19 1176 56.5 3.7 -15 5.27 1235 59.3 3.8
-10 5.05 1455 55.4 4.2 -10 4.39 1495 57.9 4.3
-5 4.17 1785 54.5 4.9 -5 3.68 1797 56.6 5.0
0 3.46 2174 53.7 5.8 0 3.11 2146 55.6 5.8
ε
ε
ε

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