Steam 0.35 kg 3.5 MPa A piston-cylinder device initially contains 0.35-kg steam at 3 MPa, 275°C. Now the steam loses heat to the surroundings and the piston moves down, hitting a set of stops at which point cylinder contains saturated liquid water. The cooling continues until the cylinder contains water at 200°C. Q the

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Basic Thermodynamic Processes

The word 'thermodynamics' can be divided into two words, 'thermo' and 'dynamics'. The word thermo deals with the heat and thermal phenomenon, whereas dynamics deals with forces or external agent that drives the heat flow or aids in the motion of heat.