Lec38 - ME 200 Thermodynamics I Lecture 38 Heat pump...

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ME 200: Thermodynamics I Lecture 38: Heat pump systems Section 10.6 Problems: SP38; 10.34, 10.42 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
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Heat Pump Systems Purpose: Maintain the temperature in residential and commercial buildings above the temperature of the surroundings. Recall: Surroundings Coefficient of Performance g = With internally and externally reversible Carnot cycle, g max = For maintaining dwellings at 70 o F, T H , o F 70 Ambient, o F -40 -20 0 20 40 60 g max 4.82 5.89 7.57 10.60 17.67 53.00
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Process 1-2: isentropic compression (gas phase instead of two-phase) Process 2-3: constant pressure heat transfer from the refrigerant in the condenser Process 3-4: constant enthalpy throttling process (expansion valve
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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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Lec38 - ME 200 Thermodynamics I Lecture 38 Heat pump...

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