A piston cylinder device contains 50kg of water at 150kpa and 25 degrees C. The cross sectional area of the piston is 0.1m2. Heat is now transferred to the water, causing part of it to evaporate and expand. When the volume reaches 0.2 m3, the piston reaches a linear spring whose spring contstant is 100kN/m. More heat is transferrred to the water until piston rises 20cm more. Determine final temp and pressure.
2006-08-25 08:10:33 · 2 answers · asked by nimskah 1 in Education & Reference ➔ Higher Education (University +)
Ans: 350kpa and 138.88 degrees C. But why
2006-08-25 08:24:39 · update #1
Oh man! that was going to be my answer! you're not supposed to give it away that easy! Thermodynamics is a funny subject. The first time you go through it, you don't understand it at all. The second time you go through it, you think you understand it, except for one or two small points. The third time you go through it, you know you don't understand it, but by that time you are so used to it, it doesn't bother you any more. I would give the answer but I am too busy right now, sorry. I know you can work it out, just keep trying.
2006-08-25 09:25:16 · answer #1 · answered by Frax 4 · 0⤊ 0⤋
Infinite, the heat and pressure will continue to raise.
2006-08-25 15:16:44 · answer #2 · answered by Anonymous · 0⤊ 0⤋