An exercise room has 6 weight-lifting machines that have no motors and 7 treadmills each equipped with a 2.5-hp (shaft output) motor. The motors operate at an average load factor of 0.7, at which their efficiency is 0.77. During peak evening hours, all 12 pieces of exercising equipment are used continuously, and there are also two people doing light exercises while waiting in line for one piece of the equipment. Assuming the average rate of heat dissipation from people in an exercise room is 600 W, determine the rate of heat gain of the exercise room from people and the equipment at peak load conditions.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
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An exercise room has 6 weight-lifting machines
that
have no motors and 7 treadmills each equipped
with a 2.5-hp
(shaft output) motor. The motors operate at an
average load
factor of 0.7, at which their efficiency is 0.77.
During peak evening
hours, all 12 pieces of exercising equipment are
used continuously,
and there are also two people doing light
exercises
while waiting in line for one piece of the
equipment. Assuming
the average rate of heat dissipation from people
in an exercise
room is 600 W, determine the rate of heat gain of
the exercise
room from people and the equipment at peak
load conditions.
Transcribed Image Text:An exercise room has 6 weight-lifting machines that have no motors and 7 treadmills each equipped with a 2.5-hp (shaft output) motor. The motors operate at an average load factor of 0.7, at which their efficiency is 0.77. During peak evening hours, all 12 pieces of exercising equipment are used continuously, and there are also two people doing light exercises while waiting in line for one piece of the equipment. Assuming the average rate of heat dissipation from people in an exercise room is 600 W, determine the rate of heat gain of the exercise room from people and the equipment at peak load conditions.
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