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4.100 Separate streams of air and water flow through the compressor and heat exchanger
arrangement shown in Fig. P4.100. Steady-state operating data are provided on the figure. Heat
transfer with the surroundings can be neglected, as can al
4.3 Steam enters a 1.6-cm-diameter pipe at 80 bar and 600oC with a velocity of 150 m/s.
Determine the mass flow rate, in kg/s.
KNOWN: Pressure, temperature, and velocity of steam entering a 1.6-cm-diameter pipe.
FIND: Mass flow rate, in kg/s.
Rome-M Z 05
Steam enters a turbine operating at steady state at SCHtMATlC 2: 61 (IE/U DATA
p1 = 12 MPa, T1 = 700C and exits at p; = 0.6 MPa. The m
isentropic turbine efficiency is 88%. Property data are
provided in the accompanying table. Stray heat tra
12.68 Moist air at 15C, 1.3 atm, 63% relative humidity and a volumetric flow rate of
770 mfh enters a control volume at steady state and ows along a surface maintained at
187C, through which heat transfer occurs. Liquid water at 15C is injected at a rate
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PROBLEM 7!. 2.8
7.28 Two kilograms of carbon monoxide in a piston-cylinder assembly, initially at 1.0
bar and 27C, is heated at constant pressure with no internal irreversibilities to a nal
temperature of 227C. Employing the ideal gas model, determine the
4.51 Steam at 18001bf/in.2 and 1100F enters a turbine operating at steady state. As shown in
Fig. P451, 20% of the entering mass ow is extramed at 600 lbin.2 and 500F. The rest of the
steam exits as a saturated vapor at 1 lbflin.2 The turbine
m A Hm I L
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END: Mwm CAHM vaulelicnevluj , Cb)-H\ bank work ma M
p, nooka g
WELL SaExampk '14'
M59 assume k= ml4mdcf=loqslrllql
W5. Furs:alekrmnh:1,_m41'1 ,4; follows:
(35. e 233-,- a -r (123)" :(300) (10%: 577
PROBLEM 2.78 (Continued) Page 2
Problem 2.78 (Continued) Page 2
For a power cycle operating as shown in Fig. 2.17a, the energy transfer by heat into the cycle,
Qin, is 500 MJ. What is the net work developed, in MJ, i
Each line of the following table gives data for a process of a closed system. Each entry has the
same energy units. Determine the missing entries.
An inventor claims to have developed a device requiring no work or heat transfer input, yet able
to produce hot and cold air streams at steady state. Data claimed by the inventor are shown on
the control volume in Fig. P6.85. The
Propane undergoes a process from state 1, where p1 = 1.4 MPa, T1 = 60oC, to state 2,
where p2 = 1.0 MPa, during which the change in specific entropy is s2 s1 = - 0.035
kJ/kgK. At state 2, determine the temperature, in oC, and the
Air contained within a piston-cylinder assembly is slowly compressed. As shown in Fig P2.32,
during this first process the pressure first varies linearly with volume and then remains constant.
Determine the total work, in kJ.
PROBLEM 6.64 (CONTINUED)
A closed, rigid tank contains 5 kg of air initially at 300 K, 1 bar. As illustrated in Fig. 6.71, the
tank is in contact with a thermal reservoir at 600 K and heat transfer occurs at the bo
Shown in the figure below is
Carbon dioxide (CO2) expands isothermally at steady state with no irreversibilities through a
turbine from 10 bar, 500 K to 2 bar. Assuming the ideal gas model and neglecting kinetic a
Determine the phase or phases in a system consisting of H2O at the following conditions and
sketch the p-v and T-v diagrams showing the location of each state.
p = 100 lbf/in.2, T = 327.86oF
p = 100 lbf/in.2, T = 240oF
Refrigerant 134a initially at -36C fills a rigid vessel. The refrigerant is heated until the
temperature becomes 25C and the pressure is 1 bar. There is no work during the process. For
the refrigerant, determine the heat transfer per unit mas
Refrigerant 22 enters the compressor of an ideal vapor compression refrigeration system as
saturated vapor at -40C with a volumetric flow rate of 15 m3/min. The refrigeration leaves the
condenser at 19C, 9 bar. Determine
(a) the compressor p
4.41 Air modeled as an ideal gas enters a well-insulated diffuser operating at steady state at 270
K with a velocity of 180 m/s and exits with a velocity of 48.4 m/s. For negligible potential
energy effects, determine the exit temperature, in K.
Finite Element Method (ME 5657)
Prof. S. Mft
Due: Friday, April 24 Thursday April 30, 2015
Question-1) Evaluation of different element types in bending
Goal of this project is to compare different element types in pure
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