ENCH291-18S1 (C) Semester One 2018

Mass and Energy Balances

15 points

Start Date: Monday, 19 February 2018
End Date: Sunday, 24 June 2018
Withdrawal Dates
Last Day to withdraw from this course:
  • Without financial penalty (full fee refund): Friday, 2 March 2018
  • Without academic penalty (including no fee refund): Friday, 18 May 2018


An introduction to completing mass and energy balances on systems relevant to process technologies.


Mass Balances (ACY)
- Basic Mass Balance Principles
- Units conversion, mass/molar/volumetric flowrates, mass/mole fractions, total and component balances
- Steady-state/unsteady-state, batch/continuous processes
- Tie element, basis for calculation, flowchart labelling
- Independent mass balance equations and Degree-of-Freedom analysis
- Steps for solving mass balance problems
- Mass balance without chemical reactions
- Mass balance with chemical reaction
- Mass balance with chemical reaction – combustion reaction

Energy Balances (SP)
-  Energy conservation and balance equations
-  Energy balances involving temperature change
-  Energy balances involving phase changes and steam
-  Energy balances involving reactions (isothermal and non-isothermal)

Learning Outcomes

University Graduate Attributes

This course will provide students with an opportunity to develop the Graduate Attributes specified below:

Critically competent in a core academic discipline of their award

Students know and can critically evaluate and, where applicable, apply this knowledge to topics/issues within their majoring subject.


Subject to approval of the Dean of Engineering and Forestry.

Timetable Note

Lectures: Three times a week. This might change, so make sure you check daily your emails and the online timetable because changes with lectures theaters could happen suddenly according to University needs.
Tutorials: Time and date to be announced during course time according to the class’ needs

Attendance at all lectures is highly encouraged. Completion of all assignments, tests, and exams is required.

Course Coordinator

Alex Yip


Alex Yip and Sean Pourazadi

Students with concerns about the course should contact any of the lecturers listed above. General enquiries about the First Professional Year (200-level) study should contact the 1st Pro Director of Studies (Assoc. Prof. Ken Morison).


Assessment Due Date Percentage  Description
Final Exam 60% Mass Balance 30% Energy Balance 30%
Energy Balance Test 20% In week 11
Mass Balance Assignment 1 23 Mar 2018 10%
Mass Balance Assignment 2 30 May 2018 10%

Solving problems in small teams and collaborative learning when working on assignments is encouraged. However direct copying is plagiarism and will result in zero marks for all students involved. When assessment is distributed, you will be instructed whether the assessment is to be submitted for marking individually or as part of a pair/group.
The assignments are mainly a tool to prepare you for the exams.  The advice is to try them individually before collaborating in groups.

Textbooks / Resources

Recommended Reading

A. Marshall; Energy balances and Chemical Engineering; (“Energy balances and Chemical Engineering” available from Learn site).

Felder, Richard M.,1939- , Rousseau, Ronald W; Elementary principles of chemical processes; 3rd ed., 2005 ed. with integrated media and study tools; Wiley, 2005.

Smith, J. M.1916- , Van Ness, H. C., Abbott, Michael M; Introduction to chemical engineering thermodynamics; 7th ed; McGraw-Hill, 2005.


Students may obtain the general policies of the University on matters such as the special considerations applications, appeals procedures, reconsideration of grades and special provision for students with disabilities from the University Calendar.  The Departmental assessment details are distributed to the students at the beginning of the year.

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

Additional Course Outline Information

Assessment and grading system

Please note that you must achieve at least 40% of the total marks in the final exam to pass this course.

Indicative Fees

Domestic fee $937.00

International fee $5,125.00

* Fees include New Zealand GST and do not include any programme level discount or additional course related expenses.

For further information see Chemical and Process Engineering.

All ENCH291 Occurrences

  • ENCH291-18S1 (C) Semester One 2018