5. A two-stage double-acting compressor is to deliver 90 lb/min of air from 14.3 psia and 90°F to a final pressure of 185 psia. The normal barometer is 29.8 in. Hg and the temperature is 80°F. The pressure drop in the intercooler is 3 psi and the temperature of the air at the exit of the intercooler is 90°F, the speed is 210 RPM and PV C during compression and expansion. The clearance is 5% for both cylinders. The temperature of the cooling water increases by 18°F. Find (a) volume of free air, (b) discharge pressure of LP cylinder for minimum work, (c) temperature at discharge for both 1.34 =
5. A two-stage double-acting compressor is to deliver 90 lb/min of air from 14.3 psia and 90°F to a final pressure of 185 psia. The normal barometer is 29.8 in. Hg and the temperature is 80°F. The pressure drop in the intercooler is 3 psi and the temperature of the air at the exit of the intercooler is 90°F, the speed is 210 RPM and PV C during compression and expansion. The clearance is 5% for both cylinders. The temperature of the cooling water increases by 18°F. Find (a) volume of free air, (b) discharge pressure of LP cylinder for minimum work, (c) temperature at discharge for both 1.34 =
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Transcribed Image Text:5. A two-stage double-acting compressor is to deliver 90 lb/min
of air from 14.3 psia and 90°F to a final pressure of 185 psia.
The normal barometer is 29.8 in. Hg and the temperature is
80°F. The pressure drop in the intercooler is 3 psi and the
temperature of the air at the exit of the intercooler is 90°F, the
speed is 210 RPM and PV 1.34 C during compression and
expansion. The clearance is 5% for both cylinders. The
temperature of the cooling water increases by 18°F. Find (a)
volume of free air, (b) discharge pressure of LP cylinder for
minimum work, (c) temperature at discharge for both
cylinders, (d) mass of cooling water to be circulated about
each cylinder and through the intercooler, (e) the work of
compression, (f) if for LP cylinder, L/D 0.68 and if both
cylinders have the same stroke, what are the bore and stroke
for each cylinder?
=
=
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