Section: Thermodynamics | Type: NAT | Marks: 2
A piston-cylinder system contains 2kg of wet steam at 90oC with quality of 0.1 . The piston is loaded with a linear spring. The steam expands to 800kPa and 250oC on heating. The work done (in kJ) in this process is ______ (rounded off to two decimal places). Use the following data: At 90oC: 𝑃𝑠𝑎𝑡= 70kPa, 𝑣𝑓= 0.001m3/kg, 𝑣𝑔= 2.4m3/kg At 250oC and 800kPa: 𝑣 = 0.29m3/kg
Answer: 40.000 to 44.500