The frictionless piston and the cylinder contain 0.2kg of air at 1.5MPa, 350℃ (state 1). This air is first expanded to 500 kPa in an isothermal process (state 2), and then compressed again to 1.5 MPa in a polytropic process (n=1.25) (state 3). Answer the following questions. (1) Find the inflation date of step 1-2. (2) Find the compression days of step 2-3. (4) Find the amount of heat transfer during this process. Mark this process on a P-v diagram or a T-v diagram
The frictionless piston and the cylinder contain 0.2kg of air at 1.5MPa, 350℃ (state 1). This air is first expanded to 500 kPa in an isothermal process (state 2), and then compressed again to 1.5 MPa in a polytropic process (n=1.25) (state 3). Answer the following questions. (1) Find the inflation date of step 1-2. (2) Find the compression days of step 2-3. (4) Find the amount of heat transfer during this process. Mark this process on a P-v diagram or a T-v diagram
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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4. The frictionless piston and the cylinder contain 0.2kg of air at 1.5MPa, 350℃ (state 1). This air is first expanded to 500 kPa in an isothermal process (state 2), and then compressed again to 1.5 MPa in a polytropic process (n=1.25) (state 3). Answer the following questions.
(1) Find the inflation date of step 1-2.
(2) Find the compression days of step 2-3.
(4) Find the amount of heat transfer during this process.
Mark this process on a P-v diagram or a T-v diagram.
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