5-23 A piston-cylinder device contains 50 kg of water at250 kPa and 25°C. The cross-sectional area of the piston is0.1 m². Heat is now transferred to the water, causing part ofit to evaporate and expand. When the volume reaches 0.2 m²,the piston reaches a linear spring whose spring constant is100 kN/m. More heat is transferred to the water until the pis-ton rises 20 cm more. Determine (a) the final pressure andtemperature and (b) the work done during this process. Also,show the process on a P-V diagram. Answers: (a) 450 kPa,147.9°C, (b) 44.5 kJA = 0.1 m²H20m = 50 kgFIGURE P5-23

Answered: 5–23 A piston-cylinder device contains…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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Water enclosed in a rigid tank is heated from 120°C to 250°C. The pressure is high enough that the water remains subcooled (compressed) liquid during the process. Determine the thermal energy needed for the process (in kJ) if the mass of water is 8 kg. You can use water property tables or the incompressible substance assumption.
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Could you please tell me whether 717.5 J is correct Answer or not (Don't copy ,Incase if you are unsure just skip it . I am confused with value ∆T ) Question 1: Consider a piston–cylinder device that contains 0.5 kg air. Now, heat is transferred to the air at constant pressure and the air temperature increases by 5°C. Determine the expansion work done during this process.
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