ME3322 HW
11/10/2016
1. Similar to 14-73
An air-conditioning system operates at a total pressure of 1 atm and consists of a heating section and a humidifier
that supplies wet steam (saturated water vapor) at 100C. Air enters the heating section at 15C and
ME3322 HW
10/25/2016
1. Similar to 12-36
Determine the change in the entropy of argon, in kJ/kgK, as it undergoes a change of state from 100 kPa and 20C
3
to 560 kPa and 280C using the equation of state P( a) = RT where a = 0.01 m /kg, and compare the res
ME3322 HW
10/11/2016
1. Similar to 10-53
Consider an ideal steam regenerative Rankine cycle with two feedwater heaters, one closed and one ope n.
Steam enters the turbine at 9 MPa and 600C and exhausts to the condenser at 20 kPa. Steam is extracted
from t
ME3322 HW
11/3/2016
1. Similar to 14-11
A tank contains 19.2 kg of dry air and 0.414 kg of water vapor at 30C and 96 kPa total pressure. Determine (a) the
specific humidity, (b) the relative humidity, and (c) the volume of the tank.
2. Similar to 14-115
T
ME3322 HW
11/1/2016
1. Similar to 13-67
Ethane (C2H6) at 15C and 300 kPa and methane (CH4) at 60C and 300 kPa enter an adiabatic mixing chamber.
The mass flow rate of ethane is 8 kg/s, which is twice the mass flow rate of methane. Determine (a) the mixtur
ME3322 HW
10/20/2016
1. Similar to 12-24
2. Similar to 12-25
0.7-lbm of a saturated vapor is converted to a saturated liquid by being cooled in a weighted piston-cylinder
3
device maintained at 60 psia. During the phase conversion, the system volume decre
ME3322 HW
10/27/2016
1. Similar to 13-59
A mixture of hydrocarbon gases is composed of 55 percent methane, 25 percent propane,
and 20 percent butane by weight. This mixture is compressed from 100 kPa and 20C to
1100 kPa in a reversible, isothermal, steady
ME3322 HW
11/8/2016
1. Similar to 14-64
Air enters a heating section at 95 kPa (Fig A-31 for 101.325 kPa not applicable), 12C, and 50 percent relative
humidity at a rate of 6 m3/min, and it leaves at 25C. Determine (a) the rate of heat transfer in the hea
ME3322 HW
10/13/2016
1. Similar to 11-58
2. Similar to 11-61
A two-evaporator compression refrigeration system like that in Fig. P11-60 uses refrigerant-134a as the
working fluid. The system operates evaporator 1 at 30 psia, evaporator 2 at 15 psia, and t