midterm - UNIVERSITY OF CALIFORNIA, DAVIS MECHANICAL &...

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UNIVERSITY OF CALIFORNIA, DAVIS MECHANICAL & AERONAUTICAL ENGINEERING ENG-105: THERMODYNAMICS MIDTERM #1 SOLUTIONS Professor Aldredge 2007 Fall Quarter YOU HAVE 1 HOUR AND 40 MINUTES TO COMPLETE THIS EXAMINATION. PLEASE SHOW ALL OF YOUR WORK ON THE PAGES PROVIDED, IF POSSIBLE. NOTE THAT THE PROBLEMS ARE NOT EQUALLY WEIGHTED. YOU ARE ALLOWED TO REFER TO YOUR OWN SHEET OF HANDWRITTEN NOTES DURING THE EXAM. YOU MAY NOT REFER TO ANY OTHER MATERIALS DURING THE EXAM. I HAVE READ AND UNDERSTAND THESE EXAMINATION RULES. Printed Name: _________________________________ Signature: _________________________________ Student ID: _________________________________
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1. A water fall is used as an energy source to operate a heat-pump cycle that provides heat to a nearby building. The height, flow rate and density of the water fall are 10 m, 1 m 3 /s and 1 g/cm 3 , respectively. Determine the rate at which heat can be supplied to the building from a heat-pump cycle having a coefficient of performance (C.O.P.) of 2. (15 points)
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This note was uploaded on 04/09/2008 for the course ENG 105 taught by Professor Alderidge during the Fall '07 term at UC Davis.

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midterm - UNIVERSITY OF CALIFORNIA, DAVIS MECHANICAL &...

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