Steady-State Energy Balances



No process variable or property changes with time
Properties and process variables have different values at different positions within the system.
For example, Equation. may not be equal to Equation., but Equation. has the same value now as it will 10 minutes from now.
The flow rates and properties of the feed and effluent streams do not change with time.
Q & W do not change with time either!
This diagram shows fluid entering and leaving a system with four points identified as the fluid moves through the system.
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Ch 5, Lesson C, Page 2 - Steady-State Energy Balances