MAEG2030 Assignment One
Submission Deadline: Feb 10, 2014
1-79 The gage pressure of the air in the tank shown in Figure P1-79 is measured to be 80 kPa.
Determine the differential height h of the mercury column.
2-118 In a hydroelectric power plant, 65 m3/

Department of Mechanical and Automation Engineering (2015-16)
Chapter 7 Entropy
Objectives
Apply the second law of thermodynamics to processes
Define a new property called entropy
Establish the increase of entropy principle
Calculate the entropy chang

Department of Mechanical and Automation Engineering (2015-16)
Chapter 10 Vapor and Combined
Power Cycles
Objectives
Analyze Rankine cycle ideal cycle for vapor power cycles
Investigate ways to modify the basic Rankine vapor power cycle to
increase the cyc

Department of Mechanical and Automation Engineering (2015-16)
Chapter 9 Gas Power Cycles
Objectives
Develop simplifying assumptions applicable to gas power cycles
Analyze various gas power cycles
Solve problems based on those cycles
1
Department of Mec

Department of Mechanical and Automation Engineering (2015-16)
Chapter 11 Refrigeration Cycles
Objectives
Review the concepts of refrigerators and heat pumps and the measure of
their performance;
Analyze the ideal and actual vapor-compression refrigerati

MAEG2030 Thermodynamics Tutorial Two
Sun Yuandong
Jan. 22, 2014
1. Consider a river flowing toward a lake at an average velocity of 3 m/s at a rate of 500 m 3/s at
a location 90 m above the lake surface. Determine the total mechanical energy of the river

MAEG2030 Thermodynamics Tutorial One
Sun Yuandong
Jan. 15, 2014
1. Humans are most comfortable when the temperature is between 65 F and 75 F. Express these
temperature limits in C. Convert the size of this temperature range (10 F) to K, C and R. Is there

MAEG 2030 Thermodynamics
Tutorial on Chapter 10
CAI Jiandong Ricky
ERB 312
jdcai@mae.cuhk.edu.hk
8 April 2014
1
Ideal Rankine Cycle
8 April 2014
2
Energy Analysis
8 April 2014
3
Thermal Efficiency
8 April 2014
4
Example 1
Consider a steam power plant ope

7-54 Steam enters a nozzle at a specied state and leaves at a specied pressure. The process is to be sketched on the Ts
diagram and the maximum outlet velocity is to be determined.
Analysis (In) The inlet state properties are T 6000 [(133
P, 26000 kPa h.

"rt-23 Heat is transferred directly from an energy-source reservoir to an energy-sink. The entropy change of the two
reservoirs is to be calculated and it is to be determined if the increase of entropy principle is satised.
Assumptions The reservoirs op

MAEG2030 Thermodynamics Tutorial Five
Wang Xiaomeng
Feb. 19, 2013
1. Air flows steadily in a pipe at 300 kPa, 77C, and 25 m/s at a rate of 18 kg/min. Determine (a) the
diameter of the pipe, (b) the rate of flow energy, (c) the rate of energy transport by

MAEG2030 Thermodynamics Tutorial Four (Chap. 4)
CHEN Hongning
Feb.12, 2014
Example 1. A frictionless pistoncylinder device initially contains 200 L of saturated liquid refrigerant134a. The piston is free to move, and its mass is such that it maintains a p

MAEG2030 Thermodynamics Tutorial Three (Chap. 3)
CHEN Hongning
Jan.29, 2014
Example 1. A 1.8-m3 rigid tank contains steam at 220C. One third of the volume is in the liquid phase
and the rest is in the vapor form. Determine (a) the pressure of the steam, (

MAEG2030 Assignment Four
Submission Deadline: Apr 14, 2014
9-35 The compression ratio of an air-standard Otto cycle is 9.5. Prior to the isentropic
compression process, the air is at 100 kPa, 35 C, and 600 cm3. The temperature at the
end of the isentropic

MAEG2030 Assignment Two
Submission Deadline: Feb 21, 2014
4-31 Saturated water vapor at 200 C is isothermally condensed to a saturated liquid in a
piston-cylinder device. Calculate the heat transfer and the work done during the process,
in kJ/kg.
4-65 A 0

MAEG2030 Assignment Three
Submission Deadline: Mar 28, 2014
6-54 Refrigerant-134a enters the condenser of a residential heat pump at 800 kPa and 35
C at a rate of 0.018 kg/s and leaves at 800 kPa as a saturated liquid. If the compressor
consumes 1.2 kW of

Department of Mechanical and Automation Engineering (2015-16)
MAEG2030 Thermodynamics
Final Review
Department of Mechanical and Automation Engineering (2015-16)
Chapter 3 Properties of Pure Substances
Need to know how to use properties tables
2
Department