1. Saturated-vapour steam at 125 kPa is compressed adiabatically in a centrifugal compresser to 750 kPa at the rate of 2.5 kgls. The compressor efficiency is 70%. Whut in a) the actaal power roquirement of the compresser b) the final temperature of the steam? c) the enthalpy of the steam in its final state? Steam tables have been provided. 2. A pump operates adiabatically with liquid water entering at Ti and P with a mass lowrate n. The diacharge pressure is Pa, and the pamp efficieney is 0.75. Far the following set of operating conditions, determine: a) the power requirement of the pump and b) the temperature of the water discharged from the pump: Data: P100 kPa 20 kys P-2,100 kPa Properties of saturted liguid water at 5o C: V-1,010 cmg C4.178 kkg-K. -2572 x 10K 3. a Find the work done when I mol of gas ges through a reversible, isothermal compression at 425s'C and I ber in a pisten/cylinder asembly, if the molar volume of the gas is given by and o d Rare given by R-81.14 cm'barfmol K Take the Enal volime to be halr the initial volume b) Steam at 200 psia and 600F (tte 1) cates a tarbine through a 4in diameter pipe with a velocity of 9 The cdast from the turbine is carried through a 10-in dater pipe and is at 5 paia and 250T (stalo 2), What is the power output of the turbine Btu/s? Data H300 Bo H1150 Du V-306 h Vy-0.0 32 174 (ny , Btu-778 2 (y)
1. Saturated-vapour steam at 125 kPa is compressed adiabatically in a centrifugal compresser to 750 kPa at the rate of 2.5 kgls. The compressor efficiency is 70%. Whut in a) the actaal power roquirement of the compresser b) the final temperature of the steam? c) the enthalpy of the steam in its final state? Steam tables have been provided. 2. A pump operates adiabatically with liquid water entering at Ti and P with a mass lowrate n. The diacharge pressure is Pa, and the pamp efficieney is 0.75. Far the following set of operating conditions, determine: a) the power requirement of the pump and b) the temperature of the water discharged from the pump: Data: P100 kPa 20 kys P-2,100 kPa Properties of saturted liguid water at 5o C: V-1,010 cmg C4.178 kkg-K. -2572 x 10K 3. a Find the work done when I mol of gas ges through a reversible, isothermal compression at 425s'C and I ber in a pisten/cylinder asembly, if the molar volume of the gas is given by and o d Rare given by R-81.14 cm'barfmol K Take the Enal volime to be halr the initial volume b) Steam at 200 psia and 600F (tte 1) cates a tarbine through a 4in diameter pipe with a velocity of 9 The cdast from the turbine is carried through a 10-in dater pipe and is at 5 paia and 250T (stalo 2), What is the power output of the turbine Btu/s? Data H300 Bo H1150 Du V-306 h Vy-0.0 32 174 (ny , Btu-778 2 (y)
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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Transcribed Image Text:1. Saturated-vapour steam at 125 kPa is compressed adiabatically in a centrifugal
compresser to 750 kPa at the rate of 2.5 kgls. The compressor efficiency is 70%. Whut in
a) the actaal power roquirement of the compresser
b) the final temperature of the steam?
c) the enthalpy of the steam in its final state?
Steam tables have been provided.
2. A pump operates adiabatically with liquid water entering at Ti and P with a mass
lowrate n. The diacharge pressure is Pa, and the pamp efficieney is 0.75. Far the
following set of operating conditions, determine:
a) the power requirement of the pump and
b) the temperature of the water discharged from the pump:
Data:
P100 kPa
20 kys
P-2,100 kPa
Properties of saturted liguid water at 5o C:
V-1,010 cmg C4.178 kkg-K. -2572 x 10K
3. a Find the work done when I mol of gas ges through a reversible, isothermal
compression at 425s'C and I ber in a pisten/cylinder asembly, if the molar volume of
the gas is given by
and o d Rare given by
R-81.14 cm'barfmol K
Take the Enal volime to be halr the initial volume
b) Steam at 200 psia and 600F (tte 1) cates a tarbine through a 4in diameter pipe
with a velocity of 9 The cdast from the turbine is carried through a 10-in
dater pipe and is at 5 paia and 250T (stalo 2), What is the power output of the
turbine Btu/s?
Data H300 Bo H1150 Du
V-306 h Vy-0.0
32 174 (ny , Btu-778 2 (y)
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