Cycle fluid

T₁ (˚C)

ρ_P (kg/m³)

P₁ (bar)

T₂ (˚C)

T₃ (˚C)

P₃ (bar)

C.O.P (+)

% (−)

%

R134a (exp)

19

2

82

45

12

1.6

R134a/Al₂O₃ (exp)

4

3690

2

80

38

12

1.78

10.11

Current (R134a)

−7.7

2.2

81.5

45.6

11.8

1.92

20

Current (NR1)

−1.93

2200

2.74

81.1

45.45

11.76

2.1

9.4

18

Current (NR2)

0.48

6500

2.99

66.73

44.84

11.58

2.9

51.1

Current (NR3)

−4.6

4250

2.47

71.45

45.10

11.67

2.4

25