Question

ROBLEM 2: 3–26 Complete this table for refrigerant-134a: TOC P, kPa & m²/kg Phase description saturated 0.007644 liquid 320 (x=0) super heated 10 0.0065 (x2.11725) 850 0.02LOGI Saturated vapor 600 - 4 ५५.४१ 33:45 Oxco 90

Answer 1

Given data: A) T=-4C, P = 320 kPa. Find v, phase description? From, saturated R-134a temperature table A-11 at T = -4 C we can see that given P > Psat hence, Answers: v = Vp = 0.0007646 m3/kg. Phase description = Subcooled / Compressed liquid. B) T = 10 C, v = 0.0065 m3/kg. Find P, phase description? From. Saturated R-134a temperature table A-11 at T = 10 C we can see that given v lies between vf and vg hence, Answers: P = Psat = 414.89 kPa. Phase description = Saturated mixture. C) P = 850 kPa, saturated vapor. Find T, v? From, saturated R-134a pressure table A-12 at P = 850 kPa, saturated vapor state. Answers: T = Tsat = 33.45 C. v = Vg = 0.024069 m3/kg.

D) T = 90 C, P = 600 kPa. Find v, phase description? From, superheated R-134a table A-13 at P = 600 kPa = 0.6 MPa, T = 90 C: Answers: v=0.046318 m²/kg. Phase description = Superheated vapor.