A vertical cylinder fitted with a piston contains 5 kg of R-410a at 10°C. Heat istransferred to the system, causing the piston to rise until it reaches a set of stops atwhich point the volume has doubled. Additional heat is transferred until thetemperature inside reaches 50°C, at which point the pressure inside the cylinder is1.4 MPa.a) What is the quality at the initial state?b) Calculate the heat transfer for the overall process.

Answered: Image /qna-images/answer/ea0811ca-1059-469f-9359-59f2a1a40a51.jpg

Answered: A vertical cylinder fitted with a…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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1) Air is compressed under Constant Entropy Process from 10 Psia, 3 ft3, 90°F to 50 Psia. Find the following: a) Final volume in ft3. b) Final temperature in °F. c) Work non-flow in BTU. From the problem above use all PVT values, What if the 1lbm of air is compressed under quasi-static process (n=1.27). Find the following: d) Work non-flow in BTU. e) Heat in BTU.
1 - Consider 2 kg of water in a cylinder blocked by a piston at 20 C, 200 kPa. Water is heated and piston starts to rise. When the piston reaches the blocks, the volume of water has doubled. Heating continues until the pressure also doubles. Calculate the work done by water and the amount of heattransfer. Consider the case that the piston is restricted by the linear spring. Initially the spring is at rest. Water is heated until the piston reaches the blocks. Just before it hits the blocks the pressure is twice the initial pressure. Calculate the work done by water and the amount of heat transfer by the time the piston reaches the blocks. 7 D H₂0
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An ideal gas initially occupying 0.020 m3 at 1.0 MPa is quasistatically expanded inside a piston-cylinder device at a constant pressure until its volume doubles. Next the expansion is continued at constant volume till the pressure reaches half of the initial pressure. Finally it is brought back to the initial state in a polytropic process with exponent n=1.6 a) Draw the processes on a P-v diagram and calculate the total work. b) Calculate the total heat transfered, what is the difference between the initial and final temperature?

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