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02 A wind turbine with a 50-m-diameter rotor is rotating at 25 rpm under steady winds at an average velocity of 10 m/s. The electrical power output from the turbine is 375 kW. The combined efficiency of the gearbox/generator is 90 percent. Taking the density of air to be 1.20 kg/m3, determine (a) the wind turbine efficiency, (b) the air velocity at the turbine exit if the turbine operated ideally at the Betz limit.

02 A wind turbine with a 50-m-diameter rotor is rotating at 25 rpm under steady winds at an average velocity of 10 m/s. The electrical power output from the turbine is 375 kW. The combined efficiency of the gearbox/generator is 90 percent. Taking the density of air to be 1.20 kg/m3, determine (a) the wind turbine efficiency, (b) the air velocity at the turbine exit if the turbine operated ideally at the Betz limit.

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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02 A wind turbine with a 50-m-diameter rotor is rotating at 25 rpm under steady winds at an average velocity of 10 m/s. The electrical power output from the turbine is 375 kW. The combined efficiency of the gearbox/generator is 90 percent. Taking the density of air to be 1.20 kg/m3, determine (a) the wind turbine efficiency, (b) the air velocity at the turbine exit if the turbine operated ideally at the Betz limit.
Transcribed Image Text:02 A wind turbine with a 50-m-diameter rotor is rotating at 25 rpm under steady winds at an average velocity of 10 m/s. The electrical power output from the turbine is 375 kW. The combined efficiency of the gearbox/generator is 90 percent. Taking the density of air to be 1.20 kg/m3, determine (a) the wind turbine efficiency, (b) the air velocity at the turbine exit if the turbine operated ideally at the Betz limit.
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