Lecture36_Vapor_compression_refri-handout

Lecture36_Vapor_compression_refri-handout - 1 Professor:...

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Unformatted text preview: 1 Professor: Euiwon Bae Lecture Hours : MWF 1:30-2:20 in ME1130 Office Hours : MWF 2:30-3:30 in ME1091 Email : ebae@purdue.edu Phone : 765-494-6849 Course website : http://engineering.purdue.edu/ME200 ME200 : Thermodynamics I Lecture 36 : Vapor compression refrigeration systems 2 Outline Vapor refrigeration systems Analyzing vapor refrigeration systems Examples 3 Vapor refrigeration systems - Purpose : keep certain area colder than the surrounding T - To make a thermodynamic analysis lets use Carnot Refrig. cycle Turbine Condenser Compressor Evaporator ? ? ? ? 2 1 3 4 T H T L T s T H T C 2 1 3 4 a b 4 Vapor refrigeration systems 4-1: Refrig. Enters evaporator as Mixture of Two-phase and changes the quality (from Q from Tc). T and P Const. T s T H T C 2 1 3 4 a b 1-2: Refrig. compressed adiabatically and become Sat. Vapor T C =>T H and P increases 2-3: Refrig. Enters condenser becomes Sat. Liquid by Q to T H . T anc P remain const. 3-4: Adiabatic expansion through Turbine. T H =>T C and P decrease 5 Vapor refrigeration systems T s T H T C 2 1 3 4 a b Carnot cycles are all internally reversible process. ?? = ? ? = ? 2 1 = ?...
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This note was uploaded on 12/11/2011 for the course ME 200 taught by Professor Gal during the Fall '08 term at Purdue University-West Lafayette.

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Lecture36_Vapor_compression_refri-handout - 1 Professor:...

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