Thermodynamics HW Solutions 815

Thermodynamics HW Solutions 815 - h_g=enthalpy(Fluid$,...

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Chapter 10 Boiling and Condensation 10-29E "!PROBLEM 10-29E" "GIVEN" T_sat=250 "[F]" L=2 "[ft]" D=0.5/12 "[ft]" "T_s=280 [F], parameter to be varied" "PROPERTIES" Fluid$='steam_NBS' P_sat=pressure(Fluid$, T=T_sat, x=1) rho_l=density(Fluid$, T=T_sat, x=0) rho_v=density(Fluid$, T=T_sat, x=1) sigma=SurfaceTension(Fluid$, T=T_sat)*Convert(lbf/ft, lbm/s^2) mu_l=Viscosity(Fluid$,T=T_sat, x=0) Pr_l=Prandtl(Fluid$, T=T_sat, P=P_sat+1) "P=P_sat+1 is used to get liquid state" C_l=CP(Fluid$, T=T_sat, x=0) h_f=enthalpy(Fluid$, T=T_sat, x=0)
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Unformatted text preview: h_g=enthalpy(Fluid$, T=T_sat, x=1) h_fg=h_g-h_f C_sf=0.0060 "from Table 8-3 of the text" n=1 "from Table 8-3 of the text" g=32.2 "[ft/s^2], gravitational acceleraton" "ANALYSIS" "(a)" 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 q_dot_nucleate=h*(T_s-T_sat) "(b)" W_dot_e=q_dot_nucleate*A*Convert(Btu/h, kW) A=pi*D*L "(c)" m_dot_evap=Q_dot_boiling/h_fg Q_dot_boiling=W_dot_e*Convert(kW, Btu/h) 10-27...
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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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