Chapter 6, Problem 6.27P

QI) A constant pressure piston cylinder contains 0.2 kg water as saturated vapor at 400 kPa. It is now cooled so the water occupies half the original volume. Find the work in the process. (-18.5 kJI

In a closed system, some water is heated to 50 oC. Then it is taken the air by vacuum in the system. What kind of observation would be expected regarding water in the closed system?

QUESTIOΝ 1: A piston-cylinder arrangement contains 2 kg of steam originally at 200°C and x-0.9. The volume triples while thc temperature is held constant. Pisten Calculate: (a) the final pressure, in MPa, 7,-200 C (c) the change in intermal energy, in kl.

A piston cylinder contains 11kg of air at 20 degC and 300 kPa. It is now heated up in a constant pressure process to 600 K. Find the final volume.   (R of air = 0.287 KJ/kg K)

Two kilograms of Methane gas underwent an isopiestic process from 200C to 300C. Find the change in internal energy, change in enthalpy, work done and heat transferred. Sketch the T-s and P-v diagrams.

A cylinder fitted with a piston has a volume of 0.1 m'and contains a 0.8 kg of steam at 0,.4 MPa. Heat is trausferred to the steam umntil the temperature is 250°C, while the pressure remmains constant. (1) vi (specific volume) in m'kg = (2) v: (specific volume) in m'kg = (3) xi (quality) = . (4) us (specific internal energy) in k/kg (5) uz (specific internal energy) in kJ/kg =. (6) Xx: (quality)= (7) Phase description at imitial state is. (8) Phase description at fitsal state is (9) W (work) in kJ= (10) Q (heat) in kJ =

Saturated water mixture in a piston cylinder arrangement is initially at 200 oC with a qualityof 50%. The mixture loses heat to the surrounding and contracts isothermally to half of theinitial volume.a- What is the final pressure and the specific work done during the process?b- Draw the process on P-v diagram.

oxygen of 200kpa  , 27c is contained in a piston cylinder device arrange to maintain a constant pressure. how much work in kj/kg

A quantity of ideal gas with an initial condition of 0.1 m3 and 735 kPa expands isothermally to 118 kPa. Find the heat transfer during the process.