EULER HEIGHT and USABLE HEIGHT in CENTRIFUGAL PUMPS SPEED TRIANGLE DEGREE OF REACTION
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📌 PROBLEM 19.4 . - A radial centrifugal water pump is designed to rotate at 1450 RPM and for radial entry into the impeller blades. The flow rate at the nominal point (optimum performance) is 160,000 L/h. The following geometric characteristics are known for this pump: ratio of outlet and inlet diameters of the blades D2/D1 = 2. Outer diameter of the impeller D2 = 300mm. Width at the impeller outlet b2 = 20mm. Angle of the blades at the outlet 𝜷_𝟐=𝟒𝟓°. It is also known that for the optimal performance point: 𝜼_𝒉=𝟎.𝟖𝟎 ; 𝜼_𝒗=𝟎.𝟗𝟎 and 𝒚 𝜼_𝒎=𝟎.𝟖𝟓 The thickness of the blades will be ignored. The pump has been designed so that the radial component of the absolute velocity is constant at the inlet and outlet of the blades. The suction and discharge pipes of the pump are equal and the axes of the inlet and outlet flanges are at the same elevation. The pressure gauge connected to the pump inlet shows an absolute pressure of 305 Torr when the flow rate is as indicated. Calculate: a) Inlet angle in the blades, velocities u2 and u1; velocity c2; radial component of the absolute velocity at the inlet and outlet of the blades; angles of the blades at the inlet of the guide ring fitted to the pump. b) Euler height and useful height c) Internal power of the pump d) Drive power e) Pressure and dynamic heights of the impeller and degree of reaction of the pump. f) Absolute pressure of the water at the pump outlet. #HydraulicMachinesCourse ✅ Personalized advice → https://wa.link/eckmlw 📚 Chapter No. 19 From the book by Claudio Mataix 2nd edition - ROODYNAMIC PUMPS 💥Course on Strength of Materials (From Scratch) • MECHANICS OF MATERIALS - Equilibrium of... 💥Static Exercises • STATICS 💥 Leave your beautiful like👍, Subscribe👆 and Share💪. HELP US continue uploading content.
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