Answered step by step
Verified Expert Solution
Question
1 Approved Answer
In both problems, draw a sketch of the setup first. 1 . An insulated piston / cylinder initially contains R - 2 2 at 2
In both problems, draw a sketch of the setup first.
An insulated pistoncylinder initially contains R at deg C quality, at a cylinder volume
of L A valve at the closed end of the cylinder is connected to a line flowing R at MPa,
deg C The valve is opened, allowing R to flow in and at the same time the external force on
the piston is decreased, and the piston moves. When the valve is closed, the cylinder contents are
at kPa, deg C and a positive work of kJ has been done against the external force.
a What is the final volume of the cylinder?
b Does this process violate the second law of thermodynamics? Answer the question by showing
all necessary calculations very clearly. If your answer is yes, comment on what may change to
make the process possible.
Steam at deg C MPa enters an insulated turbine with a mass flow rate of kgs and leaves
as a saturated mixture at deg C The steam then enters an insulated flash chamber, which separates
the steam into saturated liquid and saturated vapor at the same temperature. If the turbine produces
kW of power, calculate
a The amount of liquid water that will be obtained in one hour,
b The isentropic efficiency of the turbine,
c The rate of entropy generation in the whole process.
Show all the states of water involved in the problem on a Ts diagram
Step by Step Solution
There are 3 Steps involved in it
Step: 1
Get Instant Access to Expert-Tailored Solutions
See step-by-step solutions with expert insights and AI powered tools for academic success
Step: 2
Step: 3
Ace Your Homework with AI
Get the answers you need in no time with our AI-driven, step-by-step assistance
Get Started