1. A hydroelectric power plant has the hydraulic turbine located 60 m below the elevation of the intake pipe. The 1-m diameter pipe delivers water with a velocity of 3 m/s at a temperature of 15 °C to the turbine. The heat transfer between the turbine and the surroundings is negligible. Determine the power developed in kW.

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Thermodynamics

FIRST LAW OF THERMODYNAMICS CONSERVATION OF ENERGY – OPEN SYSTEM
1. A hydroelectric power plant has the hydraulic turbine located 60 m below the elevation of the intake pipe. The 1-m
diameter pipe delivers water with a velocity of 3 m/s at a temperature of 15 °C to the turbine. The heat transfer between the
turbine and the surroundings is negligible. Determine the power developed in kW.
Ans: 1397 kW
2. Assume 5 lb/sec of fluid enter a steady-state, steady flow system with pi = 100 psia, p2 =0.2 lb/ft³, v1 =100 fps,
uj=800 Btu/lb, and leave with p2 =20 psia, p2 =0.05 lb/ft³, v2 = 500 fps, and u2=780 Btu/lb. During passage through the
open system, each pound rejects 10 Btu of heat. Find the work in horsepower.
Ans: 167.8 hp
Transcribed Image Text:FIRST LAW OF THERMODYNAMICS CONSERVATION OF ENERGY – OPEN SYSTEM 1. A hydroelectric power plant has the hydraulic turbine located 60 m below the elevation of the intake pipe. The 1-m diameter pipe delivers water with a velocity of 3 m/s at a temperature of 15 °C to the turbine. The heat transfer between the turbine and the surroundings is negligible. Determine the power developed in kW. Ans: 1397 kW 2. Assume 5 lb/sec of fluid enter a steady-state, steady flow system with pi = 100 psia, p2 =0.2 lb/ft³, v1 =100 fps, uj=800 Btu/lb, and leave with p2 =20 psia, p2 =0.05 lb/ft³, v2 = 500 fps, and u2=780 Btu/lb. During passage through the open system, each pound rejects 10 Btu of heat. Find the work in horsepower. Ans: 167.8 hp
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