Properties

PR (R134a)

NR1 (R134a/Al₂O₃)

NR2 (R134a/CUO)

NR3 (R134a/TiO₂)

P₁ = P₄ (bar)

2.2

2.74

2.99

2.47

T₁ (˚C)

−7.7

−1.93

0.48

−4.6

T₂ (˚C)

81.5

81.1

66.73

71.45

T₃ (˚C)

45.6

45.45

44.84

45.1

P₃ = P₂ (bar)

11.8

11.76

11.58

11.67

h₁ (kJ/kg)

245.87

249.32

250.73

247.73

h₂ (kJ/kg)

312.99

312.57

297.03

302.178

h₃ = h₄ (kJ/kg)

116.73

116.49

115.58

116.06

s₁ (kJ/kg K)

0.9362

q_c (kJ/kg)

205.26

196.08

181.45

186.12

q_e (kJ/kg)

129.14

132.83

135.15

131.67

w_comp (kJ/kg)

67.12

63.25

46.3

54.45

C.O.P

1.92

2.1

2.9

2.4

η_ise

0.53