Lec37 - ME 200: Thermodynamics I Lecture 37:...

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Unformatted text preview: ME 200: Thermodynamics I Lecture 37: Vapor-compression refrigeration systems Sections 10.1, 10.2 Problems: SP37; 10.8, 10.21 Professor Hukam Mongia Office Hours: MWF 2:30 to 3:30 pm in ME 83 (Other times email for appointment) – Email: [email protected] – Phone: 765-494-5640 – Course Website: https://engineering.purdue.edu/ME200 – Course Secretaries: Diana Akers (ME 84) and Marilyn Morrison (ME 100) See Kul Inn (ME 189) about grading Homework Assignments 1 Vapor Refrigeration Systems: Purpose – Maintain cold region at a temperature below the temperature of its surroundings Examples: Refrigeration for food preservation; home and vehicle air conditioning. Recall: Fig. 2.17 W cycle = Q out-Q in Coefficient of performance b = 2 Carnot Refrigeration Cycle --- Reverse of Carnot Vapor Power Cycle (Section 5.10) Internally reversible processes. Heat transfer with no temperature differences: No external irreversibilities Direction of heat transfer shown is +ve. 1-2: Isentropic compression (2-phase flow to saturated vapor)- from p C , T C to p H , T H ....
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This note was uploaded on 05/01/2011 for the course ME 200 taught by Professor Gal during the Spring '08 term at Purdue.

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Lec37 - ME 200: Thermodynamics I Lecture 37:...

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