A Francis radial-flow hydroturbine (inward) has the following dimensions: r2=2.00 m, r₁=1.30 m, b2=0.85 m, and b1=2.10 m. The runner blade angles are ß2= 66° and B1= 18.5° at the turbine inlet and outlet, respectively. The runner rotates at N=100 rpm. The volume flow rate at design conditions is 80 m³/s. Irreversible losses are neglected in this preliminary analysis. Calculate the angle a2 through which the wicket gates should turn the flow, where az is measured from the radial direction at the runner inlet. Calculate the swirl angle ai, where ai is measured from the radial direction at the runner outlet. Predict the power output (MW) and required net head (m).
A Francis radial-flow hydroturbine (inward) has the following dimensions: r2=2.00 m, r₁=1.30 m, b2=0.85 m, and b1=2.10 m. The runner blade angles are ß2= 66° and B1= 18.5° at the turbine inlet and outlet, respectively. The runner rotates at N=100 rpm. The volume flow rate at design conditions is 80 m³/s. Irreversible losses are neglected in this preliminary analysis. Calculate the angle a2 through which the wicket gates should turn the flow, where az is measured from the radial direction at the runner inlet. Calculate the swirl angle ai, where ai is measured from the radial direction at the runner outlet. Predict the power output (MW) and required net head (m).
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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![A Francis radial-flow hydroturbine (inward) has the following dimensions: r2=2.00 m, r₁=1.30 m,
b2=0.85 m, and b1=2.10 m. The runner blade angles are ß2= 66° and B1= 18.5° at the turbine inlet and
outlet, respectively. The runner rotates at N=100 rpm. The volume flow rate at design conditions is
80 m³/s. Irreversible losses are neglected in this preliminary analysis. Calculate the angle a2 through
which the wicket gates should turn the flow, where az is measured from the radial direction at the
runner inlet. Calculate the swirl angle ai, where an is measured from the radial direction at the runner
outlet. Predict the power output (MW) and required net head (m).](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F77661983-93f2-4083-8f5c-95e8030b2164%2Fcc4290de-5af9-48c2-8123-2308fe2971b8%2Fp9dphfr_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A Francis radial-flow hydroturbine (inward) has the following dimensions: r2=2.00 m, r₁=1.30 m,
b2=0.85 m, and b1=2.10 m. The runner blade angles are ß2= 66° and B1= 18.5° at the turbine inlet and
outlet, respectively. The runner rotates at N=100 rpm. The volume flow rate at design conditions is
80 m³/s. Irreversible losses are neglected in this preliminary analysis. Calculate the angle a2 through
which the wicket gates should turn the flow, where az is measured from the radial direction at the
runner inlet. Calculate the swirl angle ai, where an is measured from the radial direction at the runner
outlet. Predict the power output (MW) and required net head (m).
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