Q1: A superheated water vapor contains in a tank at 3.5 MPa and 440°C. Find the specific volume, using (a) the ideal-gas equation, (b) the generalized compressibility chart and c) the steam table.

MERMAL SC Q2. Determine the phase in a system consisting of water at the following conditions and sketch T-v diagrams showing the location of each state. (Label the value P, Tsat, Vr and vg on diagram) p=5 bar, v=0.001 m²/kg a.

2. Given a closed container of volume 1 L containing 50 g of helium gas, calculate the following: a. The pressure at T = 6 K, assuming that the gas is an ideal gas. b. The pressure at T of state. = 6 K, assuming that the gas obeys van der Waal's equation c. The pressure at T 6 K, assuming that the gas obeys the virial equation of state truncated after the second term. = d. The state of the fluid at T = 4.2 K. (Hint: 4.2 K is below T. and 50 kg/m³ is greater than p, @ 4.2 K.)

Consider a cylinder/piston system containing 2 kg of ammonia as saturated vapor at 20°C is cooled isothermally till its volume is half the initial volume. a. List assumptions to solve problem  b. Find pressure, temperature and specific volume after the cooling process?  c. Show process on T-v and P-v diagrams showing all phases and equilibrium curves

Water at 700 C has a specific volume of 0.02600 m^3 /kg. Determine the pressure of the water based on a) ideal gas equation, b) the generalized compressibility chart and c) the steam tables. d) Determine the error involved in cases (a) & (b). 目 English (United States)

Show complete solution with t-s diagram.

Consider a saturated water vapor isobarically heated from 400°C until itsvolume is triple. Determine the final temperature with:a) Steam tables b) The compressibility chart. c) Present a comparative analysis between the answers to "a" and "b".

i) Can water vapor at 442°C and 75 bar be modeled at ideal gas?

A PV diagram below, Figure 1, shows two possible states of a system containing three moles of a monatomic ideal gas. (P,= P2 = 450 Pa, V, = 2m', V,= 8m²) c. Draw the process which depicts an isothermal expansion from state 1 to the volume V, followed by an isochoric increase in temperature to state 2 and label this process (B). d. Find the change in internal energy of the gas for the two-step process (B) Figure 1 (N/m²) 500 ! 400+ 300+ 200+ 100 - + + + + 4 6. 8 10 V (m³) 2 Copyright © 2005 Pearson Prentice Hall, Inc.