Question

Complete the following chart using the units specified, showing your work. For each chart, if a property is not relevant, write ‘n/a’ for the property. Like for vapor and liquid state, x should be mentioned as ‘n/a’. If not enough information is given to complete a row, fill in what you can and draw an 'x' through the boxes that cannot be determined. V Substance State P (bar) (m²/kg) T(°C) u (kJ/kg) h (kJ/kg) R-134a 40 280 Propane 8 350 R-22 10 0.03 Ammonia 6.25 1200 Water 7 165 R134a 20 40

Answer 1

À) A-13 Sol)? from table R-134 a super heated table State super heated At T=Yoc = 280 kJ/kg . h= P= 5 bar V= 0.04633 m?/kg u= 257 kJ /kg From S = 0.9918 kg/lagok n= cannot be determined 2). propane properties table P= sbor u= 350 cylkg state & Saturated Liquid T= 18.33€ Uf = 141 kg/kg uga = 443 1 kJ lkg U= uft th(Ug-Uf) 350 = 141+^ ( 443.1 -141) na Or 691824 % 11- 69.18 of hf= 142.6 kuling hg = 346-7 kg / kg h = heta (hg-ht) = 142.6 + 0.6918241 34637-14256) h = 28308 kg lkg m3 VF = 1.989x10 73/kg Ng=0.05776 43/1kg V. De 001989 + 0.691924 (0.05776 - 0.001989 v: 0.040573 mlig

R-22 P: lo bay V70-03 m3/i<9 At Vg = 0.0236 V> Vg it is super heated state & superheated between 70c and soc from the given data valius occured So Apply interpolation method T-70 0.03 0.02984 80-70 0.03104 - 0:02484 T= 71.3c u- 265.2 713-70 80-70 271:84 - 265.2 lu - 266.1 kg/kg cannot M = be determined 71•3 -70 h - 295:03 80-70 302.88 - 295:03 h = 296.05 kg / kg

Ammonia h = 1200 KJ / kg P= 6.25 bar At P=6:25 bar hq = 228.66 kJ/kg hg = 1432. 1 kJ /kg T = loayc h = hq tu (hg - hp) 1200= 226,66 +n (1452.) – 228.66) or 79.39% = 0.793942 liquid) (saturated nal kJ/kg Uf = 227.66 kJ/kg Ug = 1325.66 V- 227666 +0.793942 (1325,66 - 227.66) V = 1100 Kglig m3/kg 0.00160235 m3/kg Vg - 0 217625 V-0.00160235 +0.793942(0.217625 - 0.00 160235) malkg V=0:173112

s). Water P=7lar T = 165° c 3 Vapour State : saturated lialid with given data we cannot define Remaining Variables R-134a p=20 bar T = 40°c satate & compressed liallid
a
substance state Р h n (bar) (wg/kg) (c) (ks/icg (reflicg) R-134a superheated 5 10.04633 40 257 280 Х propane 0.040573 18.33 350 283:8 0.691824 saturated Liquid super heated 10 71.3 0:03 R-22 2660 296:05 ha saturated Liquid 16:25 0.173112 11004 1200 1200 10.793942 NH3 X 7 H₂O X 165 X X. Х compressed 20 yo X X X х R-134a liquid