1)
concepts of water flow in piping system?
2) concepts of energy equation Bernonlli equation?
3) concepts of energy head losses?
4) concepts of energy equation momentum?
I hope not written in handwriting?
a) What is flow work? Which term(s) in the energy equation for
an open system represent the flow work?
b) What is the Reynolds transport theorem? Why is it needed
for open systems (control volumes)?
How to solve this question?
Write down the steady flow energy equation for an open system
control volume. Stating any assumptions you have made, apply this
equation to
A steam boiler
A nozzle
Carbon dioxide enters a compressor with a mass flow rate of 0.5
kg/s. The compressor inlet pressure is 1 bar (absolute) and the
inlet temperature is 300K. The outlet pressure is 6 bar (absolute)
and the outlet temperature is 450K.
Calculate the density of the carbon...
You are studying the laminar flow of water in a pipe at 20˚C.
The pipe is 2 cm in diameter, and the pressure gradient driving the
flow is 0.8 Pa/m.
Find the x-sectional average velocity (Poiseuille’s Law) and
the maximum velocity achieved at the centerline of the pipe (use
the equation for Umax presented in the alternative
derivation of Poiseuille’s Law). How many times greater is the
maximum velocity compared to the average velocity?
Is this ū/umax ratio constant or...
• Write the Conservation of mass equation as it applies TO YOUR
SYSTEM
• Write the Conservation of Energy equation as it applies TO
YOUR SYSTEM
• List all the assumptions and idealizations for the process
1 cylinder, four-stroke, water-cooled, air injection of
fuel
Output: 14.7 kW (20 hp)
Fuel consumption: 317 g/kWh (238 g/hp-hr)
Efficiency: 26.2%
Number of revolutions: 172 min-1
Displacement volume: 19.6 L
Bore: 250 mm
Stroke: 400 mm
Write the Conservation of mass equation as it applies TO YOUR
SYSTEM
• Write the Conservation of Energy equation as it applies TO
YOUR SYSTEM
• List all the assumptions and idealizations for the process
Diesel cycle
Fuel being used is diesel
1 cylinder, four-stroke, water-cooled, air injection of
fuel
Output: 14.7 kW (20 hp)
Fuel consumption: 317 g/kWh (238 g/hp-hr)
Efficiency: 26.2%
Number of revolutions: 172 min-1
Displacement volume: 19.6 L
Bore: 250 mm
Stroke: 400 mm
Beginning with the basic balance equation, develop the open
system at steady state energy balance equation that is used for a
system with multiple inlet and outlet streams. Make sure to show
all steps and to define terms in words or by equations.
Make a mindmap that contain:
a- Relationship between Mechanical Energy Equation and internal
flow analysis.
b- Flow regimes - Search on the turbulent, laminar and
transitional flow regimes. Describes them and give example
when/where they occurs.
c- Region in pipe flow - Search on hydrodynamic entrance length,
boundary layer region/viscous flow region, hydrodynamically
developing region and hydrodynamically fully developed region.
Describes them and show how to calculate them.
As a fraud examiner you need to be able to conduct an
investigation.
how you would prepare an investigation for a case that
involved hidden assets and unknown sources of income.
What specifically would you do in this case to prove that fraud
occurred?