13-59A mixture of hydrocarbon gases is composed of 60 percent methane, 25 percent propane, and 15 percent
butane by weight. This mixture is compressed from 100 kPa and 20C to 1000 kPa in a reversible, isothermal,
steady-flow compressor. Calculate the work
Problem Statement:
T =100C
0.4 m 0.4Tm=50C
plate id under the following thermal conditions. The north side of the plate is
insulated while the south (bottom) side is cooled by air with
The west and east sides are kept at constant temperatures of
Assuming
ME 3365. Intro to Design. Assignment 2.
Based on reading in Juvinall and Marshek, pp. 248-281.
1. A steel plate in the hull of an oil tanker is 25 mm thick and 30 m wide. The steel
has a yield strength of 240 M P a, and it is loaded with a nominal uniaxia
ME 3365. Intro to Design. Assignment 3.
Based on reading in Juvinall and Marshek, pp. 248-281.
1. A steel plate in the hull of an oil tanker is 10 mm thick and 30 m wide. The steel
has a yield strength of 1310 M P a, and it is loaded with a nominaluniaxia
ME 3365. Intro to Design. Assignment 1.
Based on reading in Juvinall and Marshek, pp. 3-29.
1. Write a few sentences showing you have read and understood the following topics:
(a) Explain the analogy our author draws between engineers and physicians.
(b)
7-152ESteam enters a diffuser at 20 psia and 240F with a velocity of 900 ft/s and exits as saturated vapor at 240F
and 100 ft/s. The exit area of the diffuser is 1 ft2. Determine (a) the mass flow rate of the steam and (b) the rate of
entropy generation d
9-33An ideal Otto cycle has a compression ratio of 8. At the beginning of the compression process, air is at 95 kPa
and 27C, and 750 kJ/kg of heat is transferred to air during the constant-volume heat-addition process. Taking into
account the variation of
8-37A pistoncylinder device initially contains 2 L of air at 100 kPa and 25C. Air is now compressed to a final
state of 600 kPa and 150C. The useful work input is 1.2 kJ. Assuming the surroundings are at 100 kPa and 25C,
determine (a) the exergy of the ai
9-142Calculate the exergy destruction associated with each of the processes of the Brayton cycle described in Prob.
9-83, assuming a source temperature of 1600 K and a sink temperature of 295 K.
9-146 Determine the exergy destruction associated with each
8-58Steam enters an adiabatic turbine at 6 MPa, 600C, and 80 m/s and leaves at 50 kPa, 100C, and 140 m/s. If the
power output of the turbine is 5 MW, determine (a) the reversible power output and (b) the second-law efficiency of
the turbine. Assume the su
9-140EDetermine the exergy destruction associated with the heat rejection process of the Diesel cycle described in
Prob. 9-52E, assuming a source temperature of 3200 R and a sink temperature of 540 R. Also, determine the energy
at the end of the isentropi
8-32EA well-insulated rigid tank contains 6 lbm of saturated liquidvapor mixture of water at 35 psia. Initially,
three-quarters of the mass is in the liquid phase. An electric resistance heater placed in the tank is turned on and
kept on until all the liq
9-99A gas turbine for an automobile is designed with a regenerator. Air enters the compressor of this engine at 100
kPa and 30C. The compressor pressure ratio is 10; the maximum cycle temperature is 800C; and the cold air
stream leaves the regenerator 10C
9-36EA six-cylinder, four-stroke, sparkignition engine operating on the ideal Otto cycle takes in air at 14 psia and
105F, and is limited to a maximum cycle temperature of 2400F. Each cylinder has a bore of 3.5 in, and each piston
has a stroke of 3.9 in.
8-93Hot exhaust gases leaving an internal combustion engine at 400C and 150 kPa at a rate of 0.8 kg/s is to be used
to produce saturated steam at 200C in an insulated heat exchanger. Water enters the heat exchanger at the ambient
temperature of 20C, and t
Bartolome De Las Casas, is the author of the short story, he is also a Spanish historian. After
reading the short story you can see that he wrote History of the Indies, to inform people of the dispute
between the Spanish and Native Americans. He talks abo