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(b) During steady-state operation, a gearbox receives 60 kW through the input shaft and delivers power through the output shaft. For the gearbox as the system, the magnitude of the rate of heat transfer from the system is |ėl = hA(T, – T,) where h =170 W/m’K is the heat transfer coefficient, A = 1.0 m² is the outer surface area of the gearbox,T, = 308 K is the temperature at the outer surface, and T; = 300 K is the temperature of thesurrounding air. For the gearbox, evaluate the heat transfer rate and the power delivered through the output shaft, each in kW. If the output shaft rotates at 400 rpm, find the torque delivered by the output shaft. 4

(b) During steady-state operation, a gearbox receives 60 kW through the input shaft and delivers power through the output shaft. For the gearbox as the system, the magnitude of the rate of heat transfer from the system is |ėl = hA(T, – T,) where h =170 W/m’K is the heat transfer coefficient, A = 1.0 m² is the outer surface area of the gearbox,T, = 308 K is the temperature at the outer surface, and T; = 300 K is the temperature of thesurrounding air. For the gearbox, evaluate the heat transfer rate and the power delivered through the output shaft, each in kW. If the output shaft rotates at 400 rpm, find the torque delivered by the output shaft. 4

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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(b) During steady-state operation, a gearbox receives 60 kW through the input shaft and delivers power through the output shaft. For the gearbox as the system, the magnitude of the rate of heat transfer from the system is lėj = hA(T, – T;) where h =170 W/m°K is the heat transfer coefficient, A = 1.0 m² is the outer surface area of the gearbox,T, = 308 K is the temperature at the outer surface, and T; = 300 K is the temperature of thesurrounding air. For the gearbox, evaluate the heat transfer rate and the power delivered through the output shaft, each in kW. If the output shaft rotates at 400 rpm, find the torque delivered by the output shaft. 4
Transcribed Image Text:(b) During steady-state operation, a gearbox receives 60 kW through the input shaft and delivers power through the output shaft. For the gearbox as the system, the magnitude of the rate of heat transfer from the system is lėj = hA(T, – T;) where h =170 W/m°K is the heat transfer coefficient, A = 1.0 m² is the outer surface area of the gearbox,T, = 308 K is the temperature at the outer surface, and T; = 300 K is the temperature of thesurrounding air. For the gearbox, evaluate the heat transfer rate and the power delivered through the output shaft, each in kW. If the output shaft rotates at 400 rpm, find the torque delivered by the output shaft. 4
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