An annulus of narrow clearance causes a large pressure drop…
An annulus of narrow clearance causes a large pressure drop and can be used to measure fluid viscosity accurately. A smooth annulus has:L=1.0 m,a=50 mm,b=49 mmOil flows through the annulus at Q=2.00×10−3 m3/s If the measured pressure drop isΔp=250 kPa What is the oil viscosity μ in kg/m.s?
Read DetailsWater at 20∘C20^\circ\text{C} (ρ=998 kg/m3)(\rho = 998\ \tex…
Water at 20∘C20^\circ\text{C} (ρ=998 kg/m3)(\rho = 998\ \text{kg/m}^3) flows through an inclined pipe of diameter 8 cm8\ \text{cm}. At sections AA and BB, the following data are measured: pA=186 kPa,VA=3.2 m/s,zA=22.50 mp_A = 186\ \text{kPa}, \quad V_A = 3.2\ \text{m/s}, \quad z_A = 22.50\ \text{m}pB=260 kPa,VB=3.2 m/s,zB=9.1 m Determine the head loss hfh_f for the flow in m.
Read DetailsHeat exchangers often consist of many triangular passages. C…
Heat exchangers often consist of many triangular passages. Consider the triangular duct shown in the figure with: L=78.0 cm,a=2.0 cm, β=80∘L = 52.0\ \text{cm}, \qquad a = 2.0\ \text{cm}, \qquad \beta = 80^\circT The average fluid velocity isV=2.0 m/sV = 2.0\ \text{m/s} The fluid is SAE 10 oil at 20∘C20^\circ\text{C}, with properties ρ=870 kg/m3,μ=0.104 kg/(m.s)\rho = 870\ \text{kg/m}^3, \qquad \mu = 0.104\ \text{kg/(m\cdot s)} Estimate the pressure drop Δp\Delta p in Pa through the triangular passage.
Read DetailsWater at 20∘C20^\circ\text{C} is pumped through a pipe conne…
Water at 20∘C20^\circ\text{C} is pumped through a pipe connecting two reservoirs at a flow rate: Q=3 ft3/sQ = 3\ \text{ft}^3/\text{s}Pipe data: L=2700 ft,D=6 inL = 2100\ \text{ft}, \quad D = 6\ \text{in}Elevation difference: Δz=120 ft\Delta z = 120\ \text{ft}Pump efficiency: η=75%\eta = 75\% ρ=1.94 slug/ft3,μ=2.09×10−5 slug/(ft.s)\rho = 1.94\ \text{slug/ft}^3, \quad \mu = 2.09\times10^{-5}\ \text{slug/(ft\cdot s)}For cast iron: ε=0.00085 ft What horsepower must the pump supply?
Read DetailsWater at 20∘C20^\circ\text{C} (ρ=998 kg/m3)(\rho = 998\ \tex…
Water at 20∘C20^\circ\text{C} (ρ=998 kg/m3)(\rho = 998\ \text{kg/m}^3) flows through an inclined pipe of diameter 8 cm8\ \text{cm}. At sections AA and BB, the following data are measured: pA=186 kPa,VA=3.2 m/s,zA=23.50 mp_A = 186\ \text{kPa}, \quad V_A = 3.2\ \text{m/s}, \quad z_A = 23.50\ \text{m}pB=260 kPa,VB=3.2 m/s,zB=9.1 mp_B = 260\ \text{kPa}, \quad V_B = 3.2\ \text{m/s}, \quad z_B = 9.1\ \text{m} Determine the head loss hfh_f for the flow.
Read Details