MME/PCE 314 Engineering Thermodynamics
Homework 2
Due Friday 2/03/12
P2-14 A water jet that leaves a nozzle at 60 m/s at a flow rate of 120 kg/s is to be used to
generate power by striking the buckets located on the perimeter of a wheel. Determine the pow

MME/PCE 314 Engineering Thermodynamics
Homework 3
Due Wednesday 2/08/12
P2-61 A 75-hp (shaft output) motor that has an efficiency of 91.0 percent is worn out and is
replaced by a high-efficiency 75-hp motor that has an efficiency of 95.4 percent. Determin

MME/PCE 314 Engineering Thermodynamics
Homework 4
Due Wednesday 2/17/12
P3-22 Complete this table for H2O:
T, C
P, kPa
50
V, m3/kg
Phase description
7.72
400
250
500
110
Saturated vapor
350
P3-32 One kilogram of water fills a 150-L rigid container at an i

MME/PCE 314 Engineering Thermodynamics
Homework 5
Due Wednesday 3/02/12
P4-8 A pistoncylinder device with a set of stops initially contains 0.3 kg of steam at 1.0 MPa and 400C.
The location of the stops corresponds to 60 percent of the initial volume. Now

MME/CPE 314 Engineering Thermodynamics
Homework 6
Due Wednesday 3/21/12
P5-29 Air at 80 kPa and 127C enters an adiabatic diffuser steadily at a rate of 6000 kg/h and leaves at
100 kPa. The velocity of the air stream is decreased from 230 to 30 m/s as it p

MME/CPE 314 Engineering Thermodynamics
Homework 7
Due Monday 4/09/12
P6-21 A steam power plant with a power output of 150 MW consumes coal at a rate of 60 tons/h. If the
heating value of the coal is 30,000 kJ/kg, determine the overall efficiency of this p

MME/CPE 314 Engineering Thermodynamics
Homework 8
Due Friday 4/13/12
P7-180 Calculate the rate of entropy change of all the components of a refrigerator that uses 10 kW of
power, rejects 14 kW of heat, and has a high-temperature energy reservoir at 400 K