TEST Solutions Morning.F07

TEST Solutions Morning.F07 - TEST 1 Fall 2007 Morning YOU...

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Unformatted text preview: TEST 1 Fall 2007 Morning YOU MUST SHOW ALL YOUR WORK PROBLEM I (40 points) (Outcome 2, 5) A tank contains 1 kgm ot‘liquid ammonia and 0.] kgm of ammonia vapor at 2 "C. Determine: . The quality ot‘the mixture. 2. The pressure in the system. 3. The total volume ot‘thc container. 4. The volume occupied by the liquid. PROBLEM 2 (20 points) (Outcome 2, 5) Superheated water vapor at 10 bars and 320 0C is allowed to cool at constant volume until the temperature drops to 150 “C. Determine: 1. The final pressure. 2. The final state (|.-._ V-L. or V). and the quality (if saturated). PROBLEM 3 (30 points) (Outcome 2, 5) Refrigerant 22 is contained in a closed rigid container with a volume of 2 [‘13. Initially, the pressure and temperature ofthc steam is 140 psia and 300 "F. respectively. The temperature drops as a result of heat transfer to the surroundings. Determine: . The total mass in the container 2. The temperature at which condensation starts. (You may give a very good approximation — no need to interpolate) "\ .J. The fraction ot‘the total mass that has condensed when the pressure reaches 50 psia C} 2/2: zy/Z 74 my? fEI/VL /W%‘ WWW Mam/J /2:r/“/ flaw/5 75 - 7&2 : i. 26??"9'fla/flW' 7t ,yfl ii WFX‘W- 07/037 Maw} TfV/ was? [we/m; . flfléé‘i 3 (Mr/9 _ 25—2/5": _ fl.é§?¢f~flfl/Z/F K3 ’ ¢r¢s " Hawaii/2% #575? ...
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TEST Solutions Morning.F07 - TEST 1 Fall 2007 Morning YOU...

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