Draw a Phase diagram (P, v and T, v) and find the missing properties (P, T, v, x

Question

Draw a Phase diagram (P, v and T, v) and find the missing properties (P, T, v, x if defined) as well as the state of the following substances: Ammonia at P=300kp and v=0.8 m3kg-1 Water at T=100 degree c and v=0.001043 m3 kg-1 Water at P=120.84kp and v=0.752 m3 kg-103 R 410a T=-5 degree C and P=600 kP Nitrogen at 250kP and x=0.3 P=300kPa v=0.8m3/kg P=604 1/604 = v=1/p v=v/m = 1/p m=pv Two cylinder/piston systems are connected together through a valve as it is shown in the figure below. Cylinder 1 has a height of 3.4m and cross section area of A1 and mass of the piston m1 filled with water at height of 2m and mass of M1. Cylinder 1 is closed at top and there is a spring hanging from the center connected to top with length I=0.3m and no pressure between the piston and top. Cylinder 2 has a piston with mass m2=5m1 and cross section area of A2=5A. It is filled with water with 2 m height and mass of M2=7M1, open to the atmosphere pressure of P0 = 100 KPa. It is located 2m higher than bottom of cylinder 1. Write done an expression for pressure for each cylinder before the valve is open. Determine the pressure difference will be Delta P = P2-P1 = 120 KPa. After valve is opened show that the final height will be given by h=4M1/3000A1 + 5/3 If mass m1=20kg, A1 = 0.1m2, M1 = 120kg, then determine the pressure P after valve opened. Determine the spring constant coefficient if the thickness of Piston 1 is t = 0.05m.(g=10 ms-2, and rho = 1000Kgm-3)

Explanation / Answer

use PV=nrT or PM=d*r*T where d= density

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