Methane gas is compressed to 40 bar and precooled to 280 K. The expander and throttle exhaust to a pressure of 1 bar. Recycle methane at this pressure leaves the exchanger system. Assume no heat leaks into the system from the surroundings, an expander efficiency of 75%, and an expander exhaust of saturated vapor. For a draw-off to the expander of 25% of the methane entering the exchanger system (x = 0.25, what fraction z of the methane is liquefied, and what is the temperature of the high-pressure stream entering the throttle valve? Use 9th edition handbook, Section 2, find the thermodynamic properties of methane. Use 2 decimal points. 1. H4 (kJ/mol) 2. H15 (kJ/mol) 3. Tsat (K) 4. H9 (kl/mol)
Methane gas is compressed to 40 bar and precooled to 280 K. The expander and throttle exhaust to a pressure of 1 bar. Recycle methane at this pressure leaves the exchanger system. Assume no heat leaks into the system from the surroundings, an expander efficiency of 75%, and an expander exhaust of saturated vapor. For a draw-off to the expander of 25% of the methane entering the exchanger system (x = 0.25, what fraction z of the methane is liquefied, and what is the temperature of the high-pressure stream entering the throttle valve? Use 9th edition handbook, Section 2, find the thermodynamic properties of methane. Use 2 decimal points. 1. H4 (kJ/mol) 2. H15 (kJ/mol) 3. Tsat (K) 4. H9 (kl/mol)
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
Related questions
Question
![Methane gas is compressed to 40 bar and precooled to 280 K. The
expander and throttle exhaust to a pressure of 1 bar. Recycle methane
at this pressure leaves the exchanger system. Assume no heat leaks into
the system from the surroundings, an expander efficiency of 75%, and
an expander exhaust of saturated vapor. For a draw-off to the expander
of 25% of the methane entering the exchanger system (x = 0.25, what
fraction z of the methane is liquefied, and what is the temperature of
the high-pressure stream entering the throttle valve? Use 9th edition
handbook, Section 2, find the thermodynamic properties of methane.
Use 2 decimal points.
1. H4 (kJ/mol)
2. H15 (kJ/mol)
3. Tsat (K)
4. H9 (kJ/mol)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F6ca96e87-761e-4838-8a37-da67fcf965e4%2Fd99f8ee7-4e47-4b97-904a-4532a8c5ecf8%2Ftkfm5qs_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Methane gas is compressed to 40 bar and precooled to 280 K. The
expander and throttle exhaust to a pressure of 1 bar. Recycle methane
at this pressure leaves the exchanger system. Assume no heat leaks into
the system from the surroundings, an expander efficiency of 75%, and
an expander exhaust of saturated vapor. For a draw-off to the expander
of 25% of the methane entering the exchanger system (x = 0.25, what
fraction z of the methane is liquefied, and what is the temperature of
the high-pressure stream entering the throttle valve? Use 9th edition
handbook, Section 2, find the thermodynamic properties of methane.
Use 2 decimal points.
1. H4 (kJ/mol)
2. H15 (kJ/mol)
3. Tsat (K)
4. H9 (kJ/mol)
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