Five kg of water contained in a pistoncylinder assembly expand from an initial state where T 1
Question:
Five kg of water contained in a piston–cylinder assembly expand from an initial state where T 1 = 400C, p 1 = 700 kPa to a final state where T 2 = 200C, p 2 = 300 kPa, with no significant effects of kinetic and potential energy. The accompanying table provides additional data at the two states. It is claimed that the water undergoes an adiabatic process between these states while developing work. Evaluate this claim.
State T (C) p (kPa) v (m 3 /kg) u (kJ/kg) h (kJ/kg) s (kJ/kg K)
1 400 700 0.4397 2960.9 3268.7 7.6350
2 200 300 0.7160 2650.7 2865.5 7.3115
Introduction to Chemical Engineering Thermodynamics
ISBN: 978-0071247085
7th edition
Authors: J. M. Smith, H. C. Van Ness, M. M. Abbott