determine the prandtl number, nusselet number, and reynolds number from the following flow data. cp= .5...
determine the prandtl number, nusselet number, and
reynolds number from the following flow data.
cp= .5 Btu/lbmR
k= 2Btu/h-ft-R
h= 20 Btu/h-ft^2-R
u=0.222 lbm/ft-s
v=5ft/s
D=2in
p=58lbm/ft^3
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determine the prandtl number, nusselet number, and
reynolds number from the following flow data.
cp= .5...
Question 2 2A. Define Reynolds number. 2B. What is the range of Reynolds number where the...
Question 2 2A. Define Reynolds number. 2B. What is the range of Reynolds number where the Darcy's Law is applicable? 2C. How should you ensure you are in the valid range of Reynolds number to apply the Darcy's Law correctly? 2D. Consider a porous medium with the following rock properties • Porosity, Ø = 20% • Permeability, k = 200 mD The fluid being injected into the medium at a Darcian velocity, u = 5 cm/s, has the following properties...
3.54. Reynolds numbers for pipe flow may be expressed as 4m/td where mass flow, kg/s d...
3.54. Reynolds numbers for pipe flow may be expressed as 4m/td where mass flow, kg/s d pipe diameter, m viscosity, kg/m -s In a certain system the flow rate is 12 lbm/min. ±0.5 percent, through a 0.5-in-diameter (+0.005-in) pipe. The viscosity is 4.64 x 104 lbm/h ft, t1 percent. Calculate the value of the Reynolds number and its uncertainty. Use both the analytical and numerical techniques
Solve the table for the combined gas-turbine vapor plant. 2 State 5 900 14 520 14 4300 187.6348 TOR p (psi) 187.6348 14 h (Btu/lbm) 6 9 State P(psi 60 1000 0 v (ft'/lbm) h (Btu/lbm) s (Btu/l...
Solve the table for the combined gas-turbine vapor plant. 2 State 5 900 14 520 14 4300 187.6348 TOR p (psi) 187.6348 14 h (Btu/lbm) 6 9 State P(psi 60 1000 0 v (ft'/lbm) h (Btu/lbm) s (Btu/lbm- "R) meas (Ibm/h) 1 we--(Btu/h) | | | w..p (Btu/h) m,"p (Ibm/h) Qin (Btu/h) n 8.0 x 10 Gas turbine Turbine Air inlet Heat-recovery steam generator Turbine Vapor cycle Condenser Pump 9 10 i Cooling water Combined gas turbine-vapor power plant Figure...
Air at T=25°C and pressure P=1 bar flows over a square plate with a velocity V=1...
Air at T=25°C and pressure P=1 bar flows over a square plate with a velocity V=1 m/s. This plate has a length L= 1 m and it is heated over its entire length; the plate temperature is constant Tp=100°C. The following data are given. For air: dynamic viscosity: mu = 1.9*10–5 kg/(m.s); density: rho = 1.05 kg/m3; conductivity k = 0.03 W/(m K); Specific heat Cp = 1.007 kJ/(kg K); Prandtl number Pr = 0.7 For laminar flow over a...
3. Air is heated from 5400 R to 12000 R while the pressure drops from 50 lbf/in2 to 40 lbf/in2, assuming constant specific heat (Cp 0.24 Btu/lbm-R) and R 53.33 Btu/lbm-R (a) Determine the change...
3. Air is heated from 5400 R to 12000 R while the pressure drops from 50 lbf/in2 to 40 lbf/in2, assuming constant specific heat (Cp 0.24 Btu/lbm-R) and R 53.33 Btu/lbm-R (a) Determine the change of entropy per pound of air (b) If the air was cooled from 1200° R to 540° R while the pressure drops from 50 lbf/in2 to 40lbf/in2 what does it say about the system entropy? Does the result violate the entropy increase principle?
3. Air...
Why question3 is P Why H was independent of P Use of Tabulated Enthalpy Data The...
Why question3 is P
Why
H was independent of P
Use of Tabulated Enthalpy Data The following entries are taken from a data table for saturated methyl chloride: TCF P(psia) V(ft /lb H(Btu/lbm) State Liquid -40 6.878 0.01553 0 18.90 4.969 50 51.99 0.000 196.23 Vapor Vapor 202.28 1.920 1. What reference state was used to generate the given enthalpies? culate Afi and AU for the transition of saturated methyl chloride vapor from 50°F to O'F 3. What assum enthalpy?...
Calculate the Reynolds number, Re- (2rpv)/ n, for the following situations and decide whether the flow...
Calculate the Reynolds number, Re- (2rpv)/ n, for the following situations and decide whether the flow of fluid around them is laminar or turbulent. Then calculate the frag force using the appropriate formula. For the radius, use r 2(Area/perimeter) which, for a circle, gives the radius. Densities and viscosities are in the table on page 2. Also, to keep things uniform, we will use the boundaries for laminar and turbulent flow from Engineer's Toolbox, also on pg. 2 [1] A...
(3.14) An organic liquid at 185 F is to be cooled with water that is available...
(3.14) An organic liquid at 185 F is to be cooled with water that is available at 80°E. A double-pipe beat exchanger consisting of six hairpins connected in series will be used. The heat exchanger pipes are schedule 40. Bach hairpin is 20 ft long and is made with 2- and 1-in. stainless steel (k 9.4 Btu/h ft F) pipes. Flow rates and fuid properties, which may be assumed constant, are given below. The organic liquid will flow through the...
7. Air [R=1715 ft·lb/(slug R), cp = 6003 ft-lb/(slug-R)] flows steadily, as shown in the figure,...
7. Air [R=1715 ft·lb/(slug R), cp = 6003 ft-lb/(slug-R)] flows steadily, as shown in the figure, through a turbine which produces 700 hp. For the inlet and exit conditions shown, estimate (a) the exit velocity V2 and (b) the heat transferred in Btu per hour. Hint: The specific enthalpy of an ideal gas is h = CAT. w,700 hp Turbomachine D = 6 in P = 150 lb/in? Ti - 300°F V = 100 ft/s D -6 in P2 -...
Calculate the Reynolds number, Re = (2rρv)/ η , for the following situations and decide whether...
Calculate the Reynolds number, Re = (2rρv)/ η , for the following situations and decide whether the flow of fluid around them is laminar or turbulent. Then calculate the frag force using the appropriate formula. For the radius, use r = 2(Area/perimeter) which, for a circle, gives the radius. Densities and viscosities are in the table on page 2. Also, to keep things uniform, we will use the boundaries for laminar and turbulent flow from Engineer's Toolbox, also on pg....
Question 2 2A. Define Reynolds number. 2B. What is the range of Reynolds number where the Darcy's Law is applicable? 2C. How should you ensure you are in the valid range of Reynolds number to apply the Darcy's Law correctly? 2D. Consider a porous medium with the following rock properties • Porosity, Ø = 20% • Permeability, k = 200 mD The fluid being injected into the medium at a Darcian velocity, u = 5 cm/s, has the following properties...
3.54. Reynolds numbers for pipe flow may be expressed as 4m/td where mass flow, kg/s d pipe diameter, m viscosity, kg/m -s In a certain system the flow rate is 12 lbm/min. ±0.5 percent, through a 0.5-in-diameter (+0.005-in) pipe. The viscosity is 4.64 x 104 lbm/h ft, t1 percent. Calculate the value of the Reynolds number and its uncertainty. Use both the analytical and numerical techniques
Solve the table for the combined gas-turbine vapor plant. 2 State 5 900 14 520 14 4300 187.6348 TOR p (psi) 187.6348 14 h (Btu/lbm) 6 9 State P(psi 60 1000 0 v (ft'/lbm) h (Btu/lbm) s (Btu/lbm- "R) meas (Ibm/h) 1 we--(Btu/h) | | | w..p (Btu/h) m,"p (Ibm/h) Qin (Btu/h) n 8.0 x 10 Gas turbine Turbine Air inlet Heat-recovery steam generator Turbine Vapor cycle Condenser Pump 9 10 i Cooling water Combined gas turbine-vapor power plant Figure...
3. Air is heated from 5400 R to 12000 R while the pressure drops from 50 lbf/in2 to 40 lbf/in2, assuming constant specific heat (Cp 0.24 Btu/lbm-R) and R 53.33 Btu/lbm-R (a) Determine the change of entropy per pound of air (b) If the air was cooled from 1200° R to 540° R while the pressure drops from 50 lbf/in2 to 40lbf/in2 what does it say about the system entropy? Does the result violate the entropy increase principle?
3. Air...
Why question3 is P
Why
H was independent of P
Use of Tabulated Enthalpy Data The following entries are taken from a data table for saturated methyl chloride: TCF P(psia) V(ft /lb H(Btu/lbm) State Liquid -40 6.878 0.01553 0 18.90 4.969 50 51.99 0.000 196.23 Vapor Vapor 202.28 1.920 1. What reference state was used to generate the given enthalpies? culate Afi and AU for the transition of saturated methyl chloride vapor from 50°F to O'F 3. What assum enthalpy?...
Calculate the Reynolds number, Re- (2rpv)/ n, for the following situations and decide whether the flow of fluid around them is laminar or turbulent. Then calculate the frag force using the appropriate formula. For the radius, use r 2(Area/perimeter) which, for a circle, gives the radius. Densities and viscosities are in the table on page 2. Also, to keep things uniform, we will use the boundaries for laminar and turbulent flow from Engineer's Toolbox, also on pg. 2 [1] A...
(3.14) An organic liquid at 185 F is to be cooled with water that is available at 80°E. A double-pipe beat exchanger consisting of six hairpins connected in series will be used. The heat exchanger pipes are schedule 40. Bach hairpin is 20 ft long and is made with 2- and 1-in. stainless steel (k 9.4 Btu/h ft F) pipes. Flow rates and fuid properties, which may be assumed constant, are given below. The organic liquid will flow through the...
7. Air [R=1715 ft·lb/(slug R), cp = 6003 ft-lb/(slug-R)] flows steadily, as shown in the figure, through a turbine which produces 700 hp. For the inlet and exit conditions shown, estimate (a) the exit velocity V2 and (b) the heat transferred in Btu per hour. Hint: The specific enthalpy of an ideal gas is h = CAT. w,700 hp Turbomachine D = 6 in P = 150 lb/in? Ti - 300°F V = 100 ft/s D -6 in P2 -...
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