EML4304C Be sure to follow the homework format as shown on the website!
Concept questions:
8-12C. How does the wall shear stress w vary along the flow direction in the fully developed
region in (a) laminar flow and (b) turbulent flow?
8-13C. What fluid pr
EML4304C Concept questions
1. What is the more common term for an energy-producing turbomachine? How about an
energy-absorbing machine? Explain this terminology. In particular, from which frame of
reference are these terms defined that of the fluid or tha
MAE - EML 4304C
Thermal/Fluid Design and Lab
Lab 5
Refrigeration Experiment
MAE - EML 4304C
Thermal/Fluid Design and Lab
Lab Objective
Determine the performance of an air-conditioning
system.
To accomplish objective:
Measure temperature and pressure at fo
Example: A gas-turbine uses
C8H18(liquid) for fuel and 300%
excess air. The air and fuel enter at
77 F, and the products leave at 1100
F. The output of the engine and the
fuel consumption are measured, and
it is found that the specific fuel
consumption is
Converging nozzle
Air at 145 psia and 1100 F enters a convergin
nozzle with a velocity of 492 ft/s (335 mph).
Determine the mass flow rate through the nozzle
with a throat area of 7.7 in2 when the back is a)
100 psia, b) 58 psia
Solution:
Assumptions:
Air
EML4304C 1. Water flows through a 60 mm diameter tube that suddenly contracts to 30 mm diameter. The pressure drop across the contraction is 3.4 kPa. Determine the volume flow rate.
2. A pipe friction experiment is to be designed, using water, to reach a
Example 10.1
Fox and McDonald
A centrifugal pump is used to pump 150 gpm of water.
The water enters the impeller axially through a 1.25 inch
diameter inlet. The inlet velocity is axial and uniform.
The impeller outlet diameter is 4 inches. Flow leaves the
Operating Point of a Fan in a Ventilation System
Operating Point of a Fan in a Ventilation System
A local ventilation system is used to remove
contaminants by a dry-cleaning operation.
The equivalent roughness height of this round
duct is 0.15 mm. The ID
Example 14.1 Operating point of a Fan in a Ventilation System
1.56E-05 m2/s
1.184 kg/m3
101325 Pa
1 =
2
2 =
1.05
Pipe diameter =
9.06 in
Pipe length =
44 ft
Roughness height =
0.15 mm
Roughness factor e/D = 0.000652
KL = Co =
Q (flow rate)
600 cfm
velocit
P.A. HILTON LTD
EXPERIMENTAL
OPERATING
AND
MAINTENANCE MANUAL
REFRIGERATION CYCLE
DEMONSTRATION UNIT
WITH (R633R) REFRIGERANT
FLOWMETER
R633
R633/E/2/800_
MAY07
This page intentionally blank
(i)
POLICY STATEMENT
After Sales Service
We, P.A. Hilton Ltd., a