Login
Login
Register
Questions
Unanswered
Tags
Categories
Ask a Question
Ask a Question
Recent questions tagged steady irreversible processes
+1
vote
1
answer
Find the speed of sound for air at 15 lbf/in.2, at the two temperatures of 32 F and 90 F.
asked
Feb 14, 2019
in
Mathematics
by
kratos
entropy of ideal gases
thermodynamics
single flow devices
steady irreversible processes
velocity of sound
+3
votes
1
answer
A boiler feed pump delivers 100 ft^3/min of water at 400 F, 3000 lbf/in^2. What is the mass flowrate (lbm/*)?
asked
Feb 7, 2019
in
Mathematics
by
kratos
bernoulli
phase diagrams
thermodynamics
critical points
reversible shaft work
steady irreversible processes
+1
vote
1
answer
A condenser in a power plant receives 5 kg/* steam at 15 kPa, quality 90% and rejects the heat to cooling water with an average temperature
asked
Feb 6, 2019
in
Mathematics
by
kratos
thermodynamics
irreversibility
irreversible processes
steady state
steady irreversible processes
+2
votes
1
answer
A condenser in a power plant receives 10 lbm/* steam at 130 F, quality 90% and rejects the heat to cooling water with an average temperature
asked
Jan 15, 2019
in
Mathematics
by
kratos
thermodynamics
irreversibility
irreversible processes
steady state
steady irreversible processes
+2
votes
1
answer
A mixing chamber receives 10 lbm/min ammonia as saturated liquid at 0 F from one line and ammonia at 100 F, 40 lbf/in.^2 from another
asked
Dec 22, 2018
in
Mathematics
by
kratos
multiple flow devices
thermodynamics
irreversible processes
steady state
steady irreversible processes
+1
vote
1
answer
A force of 300 lbf moves a truck with 40 mi/h up a hill. What is the power?
asked
Oct 22, 2018
in
Mathematics
by
kratos
energy equation
energy
thermodynamics
force
density
steady irreversible processes
+3
votes
1
answer
The condenser in a power plant cools 10 kg/* water at 10 kPa, quality 90% so it comes out as saturated liquid at 10 kPa. The cooling
asked
Oct 11, 2018
in
Mathematics
by
kratos
thermodynamics
irreversibility
exergy balance equation
irreversible processes
steady state
steady irreversible processes
+3
votes
1
answer
A mass of 2 lbm has acceleration of 5 ft/*^2, what is the needed force in lbf?
asked
Sep 21, 2018
in
Mathematics
by
kratos
thermodynamics
steady irreversible processes
+2
votes
1
answer
For the same steam power plant as, determine the rate of heat transfer in the economizer, which is a low temperature
asked
Aug 23, 2018
in
Mathematics
by
kratos
heat transfer rates
thermodynamics
irreversibility
irreversible processes
law efficiency
steady state
steady irreversible processes
+2
votes
1
answer
Calculate the irreversibility for the condenser in a power plant receives 5 kg/* steam at 15 kPa, quality 90% and rejects the heat to cooling water
asked
Aug 13, 2018
in
Mathematics
by
kratos
steady state
thermodynamics
irreversibility
irreversible processes
exergy balance equation
steady irreversible processes
+2
votes
1
answer
A steam turbine receives water at 2000 lbf/in.^2, 1200 F at a rate of 200 lbm/* In the middle section 40 lbm/* is withdrawn
asked
Aug 12, 2018
in
Mathematics
by
kratos
multiple flow devices
thermodynamics
pipe
pumps
steady irreversible processes
+3
votes
1
answer
Air at 540 F, 60 lbf/in.^2 with a volume flow 40 ft^3/* runs through an adiabatic turbine with exhaust pressure of 15 lbf/in.^2. Neglect kinetic
asked
Jul 17, 2018
in
Mathematics
by
kratos
multiple devices
thermodynamics
reversible processes
cycle processes
steady state
steady irreversible processes
+1
vote
1
answer
Water at 80 F can exist in different phases dependent on the pressure. Give the approximate pressure range in lbf/in^2 for water being
asked
Jul 17, 2018
in
Mathematics
by
kratos
bernoulli
phase diagrams
thermodynamics
critical points
reversible shaft work
steady irreversible processes
+3
votes
1
answer
: Steam at gauge pressure of 1.5Mpa is supplied to a steam turbine, which rejects it to a condenser at a vacuum of 710mm Hg after expansion.
asked
Jun 13, 2018
in
Mathematics
by
kratos
availability
thermodynamics
irreversibility
irreversible processes
steady state
steady irreversible processes
+2
votes
1
answer
A supply of 10 lbm/* ammonia at 80 lbf/in.^2, 80 F is needed. Two sources are available one is saturated liquid at 80 F
asked
Jun 1, 2018
in
Mathematics
by
kratos
irreversible processes
thermodynamics
steady irreversible processes
steady state
+1
vote
1
answer
A steam turbine receives water at 2000 lbf/in.^2, 1200 F at a rate of 200 lbm/* . In the middle section 40 lbm/* is withdrawn at 300 lbf/in.^2,
asked
May 25, 2018
in
Mathematics
by
kratos
thermodynamics
multiple flow devices
steady irreversible processes
+2
votes
1
answer
An insulated mixing chamber receives 4 lbm/* R-134a at 150 lbf/in.^2, 220 F in a line with low velocity.
asked
May 12, 2018
in
Mathematics
by
kratos
thermodynamics
multiple flow devices
heat exchangers
steady irreversible processes
+3
votes
1
answer
Consider a two-part process with an expansion from 3 to 6 ft^3 at a constant pressure of 20 lbf/in.^2 followed by an expansion
asked
May 12, 2018
in
Mathematics
by
kratos
entropy generation
political parties
ideal gas
thermodynamics
polytropic processes
steady irreversible processes
+1
vote
1
answer
For the same steam power plant a, assume the cooling water comes from a lake at 15°C and is returned at 25°C.
asked
Feb 23, 2018
in
Mathematics
by
kratos
carnot cycles
thermodynamics
irreversibility
exergy balance equation
irreversible processes
steady state
steady irreversible processes
+2
votes
1
answer
5kg of steam is condensed in a condenser following reversible constant pressure process from 0.75 bar
asked
Jan 11, 2018
in
Mathematics
by
kratos
thermodynamics
steady irreversible processes
irreversibility
availability
To see more, click for the
full list of questions
or
popular tags
.