CBEMS 45B Chemical Processing and Energy Balances (2012-2013)

CBEMS 45B Chemical Processing and Energy Balances

(Required for ChE. Selected Elective for MSE.)
Catalog Data:

CBEMS 45B Chemical Processing and Energy Balances (Credit Units: 3) Principles of thermodynamics: definitions, basic concepts, and laws; property relationships; construction of thermodynamic charts and tables; energy balances; phase and chemical equilibria; combined mass and energy balances. Prerequisite: CBEMS45A or Physics 7E; Mathematics 3A. Chemical Engineering and Materials Science Engineering majors have first consideration for enrollment. Only one course from CBEMS 45B, ENGRMAE 91 may be taken for credit. (Design units: 0)

Required Textbook:
. Edition, , 1969, ISBN-13 978-0471661740.

Recommended Textbook:


Ali Mohraz
Relationship to Student Outcomes
This course relates to Student Outcomes: EAC a, EAC c, EAC e, EAC f, EAC h, EAC j.
Course Learning Outcomes. Students will:

1. Utilize the concept of energy conservation to formulate and apply combined mass and energy balance equations to engineering processes. (EAC a)

2. Define thermodynamic intensive and extensive variables and describe their physical significance. (EAC a)

3. Apply the first and second laws of thermodynamics to characterize the efficiency of chemical and engineering processes. (EAC a)

4. Use steam tables and thermodynamic charts in the context of energy and entropy balance calculations. (EAC e)

5. Analyze the thermodynamics of important chemical and industrial cycles (e.g., liquefaction, refrigeration, and heat engines) and calculate their efficiencies. (EAC c, EAC j)

6. Demonstrate how ethical and professional responsibility impact systems design and engineering solutions from both global and societal standpoints. (EAC f, EAC h, EAC j)

Prerequisites by Topic

Mass balance analysis of chemical and industrial processes, Chemical stoichiometry, Basic principles of chemical engineering.

Lecture Topics:
  • Introduction to energy balances, notations and definitions of heat and work, intensive and extensive thermodynamic properties.
  • Conservation of energy and the first law of thermodynamics.
  • Formulation and application of mass and energy balances.
  • Introduction to steam tables and thermodynamic charts.
  • Definition of entropy and the second law of thermodynamics.
  • The entropy balance for a chemical process.
  • Process reversibility, and efficiency of engines.
  • Thermodynamic analysis of liquefaction, power generation, and refrigeration cycles.
  • Ethical and professional responsibility in engineering design.
Class Schedule:

Meets for 3 hours of lecture each week for 10 weeks.

Computer Usage:

Students are required to use basic computer skills to prepare solutions to problem-based learning assignments.

Laboratory Projects:

Design project assesses alternatives for energy production from both energetic and pollution perspectives. Requires knowledge and understanding of material, energy and mass balances. This project is also structured as a team effort (three students), emphasizing working in multi-disciplinary teams.

Professional Component

The professional and ethical responsibilities in engineering design are discussed in lecture with real life examples. The students’ understanding of these concepts is assessed in the exams and the design project.

Design Content Description


Laboratory Portion:
Grading Criteria:
  • Homework: 25%
  • Midterm Exam: 35%
  • Final Exam: 40%
  • Total: 100%
Estimated ABET Category Content:

Mathematics and Basic Science: 0.0 credit units

Computing: 0.0 credit units

Engineering Topics: 3.0 credit units

Engineering Science: 3.0 credit units

Engineering Design: 0.0 credit units

April 16, 2012
Senate Approved:
January 10, 2012
Approved Effective:
2012 Fall Qtr