Thermodynamics HW Solutions 793

Thermodynamics HW Solutions 793 - "ANALYSIS"

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Chapter 10 Boiling and Condensation 10-13 "!PROBLEM 10-13" "GIVEN" D=0.003 "[m]" "P_sat=101.3 [kPa], parameter to be varied" "PROPERTIES" Fluid$='steam_NBS' T_sat=temperature(Fluid$, P=P_sat, x=1) rho_l=density(Fluid$, T=T_sat, x=0) rho_v=density(Fluid$, T=T_sat, x=1) sigma=SurfaceTension(Fluid$, T=T_sat) mu_l=Viscosity(Fluid$,T=T_sat, x=0) Pr_l=Prandtl(Fluid$, T=T_sat, P=P_sat) C_l=CP(Fluid$, T=T_sat, x=0) h_f=enthalpy(Fluid$, T=T_sat, x=0) h_g=enthalpy(Fluid$, T=T_sat, x=1) h_fg=h_g-h_f C_sf=0.0130 "from Table 8-3 of the text" n=1 "from Table 8-3 of the text" C_cr=0.12 "from Table 8-4 of the text" g=9.8 "[m/s^2], gravitational acceleraton"
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Unformatted text preview: "ANALYSIS" q_dot_max=C_cr*h_fg*(sigma*g*rho_v^2*(rho_l-rho_v))^0.25 q_dot_nucleate=q_dot_max q_dot_nucleate=mu_l*h_fg*(((g*(rho_l-rho_v))/sigma)^0.5)*((C_l*(T_s-T_sat))/(C_sf*h_fg*Pr_l^n))^3 DELTAT=T_s-T_sat P sat [kPa] q max [kW/m 2 ] Δ T [C] 70 871.9 20.12 71.65 880.3 20.07 73.29 888.6 20.02 74.94 896.8 19.97 76.59 904.9 19.92 78.24 912.8 19.88 79.88 920.7 19.83 81.53 928.4 19.79 83.18 936.1 19.74 84.83 943.6 19.7 86.47 951.1 19.66 88.12 958.5 19.62 89.77 965.8 19.58 91.42 973 19.54 93.06 980.1 19.5 94.71 987.2 19.47 96.36 994.1 19.43 98.01 1001 19.4 99.65 1008 19.36 101.3 1015 19.33 10-5...
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This note was uploaded on 01/24/2012 for the course PHY 4803 taught by Professor Dr.danielarenas during the Fall '10 term at UNF.

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