che_220_lecture_2_after

che_220_lecture_2_after - Pressure canner System = water...

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CHE 220 Introduction to Chemical Engineering Thermodynamics Lecture 2: The Nitty-Gritty Concepts in thermodynamics Interactions of boundaries Properties and processes
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Choosing the system is an important step in solving problems in thermodynamics . System Surroundings Universe Boundary Ice in water boundaries
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Interactions across system boundaries influences problem solutions.
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Are these systems open or closed? Glass of water with one melting ice cube. System = ice cube Glass of water with one melting ice cube. System = water + ice cube Pot of boiling water. System = water
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Unformatted text preview: Pressure canner. System = water surrounding jars PV work frequently appears in thermodynamic analysis of closed systems. Recall physics definition. F F PV work: compression of a gas work IN is positive If the process is reversible State, properties and equilibrium are system characteristics. State: Properties: Equilibrium: a) mechanical b) thermal c) diffusional The thermodynamic process describes a change of system from one state to another. System in state 1 System in state 2 process Process variables State function B A...
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che_220_lecture_2_after - Pressure canner System = water...

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