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PV and TS Diagrams

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Wize University Physics Textbook (Master) > Thermodynamics

TS-Diagrams

2 Activities

Wize University Physics Textbook (Master) > Thermodynamics

PV- Diagrams

4 Activities

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Mark Yourself Question
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A system of a cylinder and a piston has the shape of the diagram below when the temperature of the gas inside the cylinder is 300℃ and its pressure is 200πΎπ‘ƒπ‘Ž. The piston has a mass of 50 π‘˜π‘” and its radius is . 06 π‘š and pushes against a set of stops at initial condition so that the height of the cylinder is 80 π‘π‘š. The temperature outside the cylinder is 30℃ and the pressure is 1 π‘Žπ‘‘π‘š. The cylinder cools down by exchanging heat with the environment.

a. Draw a free body diagram of the piston.

b. At what temperature and pressure does the piston start to move down?

c. How far has the piston dropped when the temperature inside the cylinder reaches the temperature outside the cylinder? (assume the piston moves down with a constant velocity)

d. Draw the PV-Diagram and TS-diagram for the gas to get to the point described in part c.





More TS-Diagrams Questions:
A system of a cylinder and a piston has the shape of the diagram below when the temperature of the gas inside the cylinder is 300℃ and its pressure is 200πΎπ‘ƒπ‘Ž. The piston has a mass of 50 π‘˜π‘” and its radius is . 06 π‘š and pushes against a set of stops at initial condition so that the height of the cylinder is 80 π‘π‘š. The temperature outside the cylinder is 30℃ and the pressure is 1 π‘Žπ‘‘π‘š. The cylinder cools down by exchanging heat with the environment.
a. Draw a free body diagram of the piston.
b. At what temperature and pressure does the piston start to move
Entropy: Heat Engines
A cylinder contains a diatomic gas at a pressure of 3 atm and a temperature of 250K. Its initial volume is 4.0 liters. The gas is next carried through the following processes:
a. It is expanded isobarically to a temperature of 375K.
b. It is cooled down to 250K in an isochoric process.
More PV- Diagrams Questions:
A system of a cylinder and a piston has the shape of the diagram below when the temperature of the gas inside the cylinder is 300℃ and its pressure is 200πΎπ‘ƒπ‘Ž. The piston has a mass of 50 π‘˜π‘” and its radius is . 06 π‘š and pushes against a set of stops at initial condition so that the height of the cylinder is 80 π‘π‘š. The temperature outside the cylinder is 30℃ and the pressure is 1 π‘Žπ‘‘π‘š. The cylinder cools down by exchanging heat with the environment.
a. Draw a free body diagram of the piston.
b. At what temperature and pressure does the piston start to move
New Practice Question
An engineer wants to design! A thermodynamic path in order to increase the temperature of 1000 lit of a diatomic gas from 350K to 850K. He is considering two different options. The first method is to increase the temperature using a series of alternating adiabatic and isothermal processes so that during each adiabatic process the gas is heated up by 100K and then is expanded to its original volume through an isothermal process. The second method is to raise the temperature through a single isochoric process.
a) Draw P-V and T-S curves for both methods
b) In which method the heat added to the gas is less?