A work producing device of the piston-cylinder system at the beginning contains 1.5 kg of refrigerant-134a at 700 kPa and 120°C. At this stage, the piston stops at the top dead center (TDC). To move the mass of the piston 400 kPa pressure is required. A valve at the bottom (BDC) of the cylinder is opened, and the gas is withdrawn from it. After a few seconds, the piston starts to move and the valve is closed when half of the gas is withdrawn from the cylinder and the temperature in the cylinder drops to 30°C. (a) Sketch the PVDiagram of this process and determine (b) the work done, (c) the heat transfer to the surrounding
A work producing device of the piston-cylinder system at the beginning contains 1.5 kg of refrigerant-134a at 700 kPa and 120°C. At this stage, the piston stops at the top dead center (TDC). To move the mass of the piston 400 kPa pressure is required. A valve at the bottom (BDC) of the cylinder is opened, and the gas is withdrawn from it. After a few seconds, the piston starts to move and the valve is closed when half of the gas is withdrawn from the cylinder and the temperature in the cylinder drops to 30°C. (a) Sketch the PVDiagram of this process and determine (b) the work done, (c) the heat transfer to the surrounding
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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A work producing device of the piston-cylinder system at the beginning contains 1.5 kg of refrigerant-134a at 700 kPa and 120°C. At this stage, the piston stops at the top dead center (TDC). To move the mass of the piston 400 kPa pressure is required. A valve at the bottom (BDC) of the cylinder is opened, and the gas is withdrawn from it. After a few seconds, the piston starts to move and the valve is closed when half of the gas is withdrawn from the cylinder and the temperature in the cylinder drops to 30°C. (a) Sketch the PVDiagram of this process and determine (b) the work done, (c) the heat transfer to the surrounding
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