# Example 3.1a T0 = 120 degC P0 = 500.00 kPa Psat = 198.50 kPa Tsat = 151.86 degC # Example 3.1b T0 = 120 degC n = 0.50 m^3 / kg nf = 0.00106 m^3 / kg ng = 0.89186 m^3 / kg # Example 3.2a T0 = 30 degC P0 = 1000.0 kPa Psat = 1167 kPa Tsat = 25.00 degC # Example 3.2b P0 = 200 kPa n = 0.15 m^3 / kg ng = 0.11190 m^3 / kg # Example 3.3a P = 300 kPa n = 0.50 m^3 / kg T2_phase = 133.6 degC c1 = 0.001073 m^3 / kg c2 = 0.60475 m^3 / kg x = (n - c1) / c2 # Example 3.3b MKS(degC) BEGIN P = 300 kPa n = 1.00 m^3 / kg T1 = 300.0 degC x1 = 0.8753 T2 = 400.0 degC x2 = 1.0315 T3 = 379.8 degC x3 = 1.0000 m12 = (T2 - T1) / (x2 - x1) m13 = (T3 - T1) / (x3 - x1) e = m12 - m13; degK END solve(e, T3) # Example 3.4 Vliq = 0.10 m^3 Vvap = 0.90 m^3 nliq = 0.0008430 m^3 / kg nvap = 0.0267100 m^3 / kg mliq = Vliq / nliq ; kg mvap = Vvap / nvap ; kg x = mvap / (mvap + mliq) # Example 3.4E Vliq = 0.10 ft^3 Vvap = 0.90 ft^3 nliq = 0.0136000 ft^3 / lbm nvap = 0.4009000 ft^3 / lbm mliq = Vliq / nliq ; lbm mvap = Vvap / nvap ; lbm x = mvap / (mvap + mliq) # Example 3.5 T1 = 20.00 degC T2 = 40.00 degC n1 = 0.1492200 m^3 / kg n2 = n1 P3 = 800 kPa n3 = 0.17720 m^3 / kg P4 = 1000 kPa n4 = 0.13868 m^3 / kg P = P3 + (n1 - n3) * (P4 - P3) / (n4 - n3) ; kPa # Example 3.5E T1 = 70.00 degF T2 = 120.00 degF n1 = 2.3110000 lbm / ft^3 n2 = n1 P3 = 125 psi n3 = 2.59170 lbm / ft^3 P4 = 150 psi n4 = 2.22750 lbm / ft^3 P = P3 + (n1 - n3) * (P4 - P3) / (n4 - n3) ; psi # Example 3.6a T1 = -53.20 degC P1 = 600.00 kPa n1 = 0.1078800 m^3/kg # Example 3.6b T1 = 100.00 degK n1 = 0.0080000 m^3/kg nf = 0.00145 m^3 / kg nfg = 0.03120 m^3 / kg P = 779.20000 kPa x = (n1 - nf) / nfg # Example 3.7 T1 = 200.0 degC n1 = 0.40 m^3/kg ng = 0.12736 m^3 / kg P3 = 500 kPa n3 = 0.42492 m^3/kg P4 = 600 kPa n4 = 0.35202 m^3/kg P = P3 + (n1 - n3) * (P4 - P3) / (n4 - n3) ; kPa # Example 3.8 T0 = 25.0 degC P0 = 100.00 kPa L0 = 6 m W0 = 10 m H0 = 4 m R0 = 0.287 kN m / kg degK V0 = L0 * W0 * H0 ; m^3 m0 = P0 * V0 / (R0 * T0) ; kg # Example 3.9 V0 = 0.5 m^3 m0 = 10.00 kg M0 = 24 g / mol T0 = 25 degC R0 = gas() / M0 ; kN m / kg degK P0 = m0 * R0 * T0 / V0 ; kPa # Example 3.9E V0 = 15.0 ft^3 m0 = 20.00 lbm M0 = 24 g / mol T0 = 80 degF R0 = gas() / M0 ; ft lbf / lbm degR P0 = m0 * R0 * T0 / V0 ; psi # Example 3.10 P0 = 105.0 kPa T0 = 21.00 degC DV = 0.75 m^3 Dt = 185 s dVdt = DV / Dt ; m^3/s R0 = 0.188900 kJ / kg degK dmdt = P0 * dVdt / R0 / T0 ; kg/s # Example 3.11a T0 = 20.0 degC P0 = 1.00 MPa Tc = 126.20 degK Pc = 3.39 Mpa T0 / Tc P0 / Pc # Example 3.11b T0 = 20.0 degC P0 = 1.00 MPa Tc = 304.10 degK Pc = 7.38 Mpa T0 / Tc P0 / Pc # Example 3.11c T0 = 20.0 degC P0 = 1.00 MPa Pc = 858.00 kPa P0 / Pc # Example 3.12a T0 = 100.0 degC P0 = 3.00 MPa n0 = 0.01 m^3/kg # Example 3.12b T0 = 100.0 degC P0 = 3.00 MPa M0 = 102.03 g / mol R0 = gas() / M0 ; kN m / kg degK n0 = R0 * T0 / P0 ; m^3/kg # Example 3.12c T0 = 100.0 degC P0 = 3.00 MPa Tc = 374.20 degK Pc = 4.06 Mpa T0 / Tc P0 / Pc Z = 0.67 n2 = 0.010136 m^3/kg n = Z * n2 ; m^3/kg # Example 3.13 V0 = 0.1 m^3 x0 = 10.0% T0 = 15.0 degC Tc = 369.80 degK T0 / Tc Pc = 4.25 Mpa PrSat = 0.20 P0 = Pc * PrSat ; Mpa Zg = 0.83 Zf = 0.035 Z0 = (1 - x0) * Zf + x0 * Zg R0 = 0.18860 kN m / kg degK m0 = P0 * V0 / (Z0 * R0 * T0) ; kg # Homework Problems: TBD