Accounting for Mass
When is Accounting for Mass Covered?
Accounting for Mass is introduced in ENGR112 during Class 22.1*
*Explaination of Class numbering System
Objectives
| Class 22.1: |
Accounting for Mass |
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Understand that mass is conserved, yet can accumulate/deplete and can enter/leave system |
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Apply the UAE to account for mass |
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Understand definitions for conserved quantities, steady state, and extensive properties |
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Understand how many equations are necessary to solve for unknown quatities |
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Use mass accounting to simultaneously solve for up to three unknown quantities |
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Be able to write systems of equations in Matrix form |
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Understand the Excel commands Minverse() and Mnult() |
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Be able to solve systems of equations using Excel |
Class Agenda
| Class 22.1: |
Accounting for Mass |
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Lecture material on accounting for mass |
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Individual exercise |
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Lecture material on mass balance approach |
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Example of mass balance |
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Lecture material on rate processes |
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Pairs exercise |
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Lecture material on solving systems of equations in Excel |
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5 min team exercise |
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Excel example of matrices |
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5 min pair exercise |
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HW assignment |
Why is Accounting for Mass Important?
Many engineers work with processes or systems where materials are mixed, seperated or distributed, and must be accounted for. Using accounting for mass concepts and the Universal Accounting Equation can aid in understanding and describing these complex processes and situations.
Mass can be accounted for because it can neither be created nor destroyed.
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