ENCH291-23S1 (C) Semester One 2023

Mass and Energy Balances

15 points

Details:
Start Date: Monday, 20 February 2023
End Date: Sunday, 25 June 2023
Withdrawal Dates
Last Day to withdraw from this course:
  • Without financial penalty (full fee refund): Sunday, 5 March 2023
  • Without academic penalty (including no fee refund): Sunday, 14 May 2023

Description

Mass and energy balance calculations are the essential parts of the solution of many complex chemical engineering problems. They assist in the planning and design of processes, in the economic evaluation of the proposed and existing processes, in process control, and in process optimization. In this course, students will learn a systematic procedure for solving mass and energy balance problems including drawing and labelling for a flowchart, performing a degree-of-freedom analysis, making appropriate chemical engineering assumptions etc. Students will be able to analytically examine and predict the mass and energy balances around single or multiple unit operation(s) involving gases and liquids, recycle, bypass or purge streams with or without chemical reactions.

We will teach you a systematic procedure for solving mass and energy balance problems including drawing and labelling for a flowchart, performing a degree-of-freedom analysis, making appropriate chemical engineering assumptions etc. You will be able to analytically examine and predict the mass and energy balances around single or multiple unit operation(s) involving gases and liquids, recycle, bypass or purge streams with or without chemical reactions.

Learning Outcomes

This course seeks to develop the following knowledge and skills in students:
 Mass balance
Students will be able to analyse and perform:
o Units conversion, mass/molar/volumetric flowrates, mass/mole fractions, total and component balances
o Steady-state/unsteady-state, batch/continuous processes
o Tie element, basis for calculation, flowchart labelling
o Independent mass balance equations and Degree-of-Freedom analysis
o Steps for solving mass balance problems
o Mass balance with/without chemical reactions
 Energy balance
Students will be able to analyse and perform:
o Energy conservation and balance equations
o Energy balances involving temperature change
o Energy balances involving phase changes and steam
o Energy balances involving reactions (isothermal and non-isothermal)

Prerequisites

Subject to approval of the Dean of Engineering and Forestry.

Timetable 2023

Students must attend one activity from each section.

Lecture A
Activity Day Time Location Weeks
01 Tuesday 12:00 - 13:00 Ernest Rutherford 140
20 Feb - 2 Apr
24 Apr - 4 Jun
Lecture B
Activity Day Time Location Weeks
01 Monday 09:00 - 10:00 Rehua 528
20 Feb - 2 Apr
24 Apr - 4 Jun
Lecture C
Activity Day Time Location Weeks
01 Thursday 10:00 - 11:00 A6 Lecture Theatre
20 Feb - 2 Apr
24 Apr - 4 Jun

Examination and Formal Tests

Test A
Activity Day Time Location Weeks
01 Friday 18:30 - 20:30 E5 Lecture Theatre
20 Mar - 26 Mar

Timetable Note

The course consists of three lectures (3 x 1 h) and one HelpDesk session (1 h) per week.

Tutorial sessions will be run within the lecture occasionally.

Attendance at all lectures is highly encouraged.

Course Coordinator / Lecturer

Alex Yip

Lecturer

Rachael Wood

Assessment

Assessment Due Date Percentage  Description
Final Exam 60% 60% - Mass Balance 20% and Energy Balance 40%
Mass Balance Assignment 1 20 Mar 2023 10%
Test - Mass Balance 24 Mar 2023 20%
Assignment 2 - Energy Balance 28 Apr 2023 5%
Assignment 3 - Energy Balance 02 Jun 2023 5%

Textbooks / Resources

Recommended Reading

Felder, Richard M. , Rousseau, Ronald W., Bullard, Lisa G; Elementary principles of chemical processes ; 4th edition; Wiley, 2016.

Smith, J. M. , Van Ness, H. C., Abbott, Michael M; Introduction to chemical engineering thermodynamics ; 7th ed; McGraw-Hill, 2005.

Notes

This is a compulsory course which provides a basis for many other courses in chemical engineering.

Indicative Fees

Domestic fee $1,030.00

International fee $5,750.00

* All fees are inclusive of NZ GST or any equivalent overseas tax, and do not include any programme level discount or additional course-related expenses.

For further information see Chemical and Process Engineering .

All ENCH291 Occurrences

  • ENCH291-23S1 (C) Semester One 2023