Question

Question3 20 points Save Answ Refrigerant 134aenters a horiontal pipe operating at tady sat at 40C,29 bar anda velocity of 4ms. At the axit the emeratureis0°Cand the presue is 240 kPa. The pipe diameter is 0.03 m Detemine the velocity at the exit in ms

Use tables at the back of the book: Fundamentals of Thermodynamics 8th edition by M. j. Moran

Please show how you got all your numbers

Answer 1

Since the state of R134a is superheated , you have to go to corresponding condition. These values are generally directly given.

igbar, y = 34 mls & superheated source for properties state - 400, P-2,9 bar = 34 mls & stupen and I - 12.31.94 18/m3 (peace-software.de 12 = 50°c, P2 = 240 kPa, z = 9.723 rg len? 2 superheated state} from continuity een SAV = S A22 A = Id A₂ » Su Sava 12-3194 x 34 = 9.723 x ₂ =) = 43.079 m/s)

If not given you can extrapolate or use online tools like the one i have used to get the properties.

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