Steam initially saturated at 2.05 MPa, passes through a 10.1 cm standard steel pipe for a total distance of 152 m. The steam line is insulated with a 5.08 cm thickness material of k = 0.069 W/m- o K and exposed to the atmosphere whose temperature is 22 o C and h = 9.36 W/m 2 -K. What is the quality of steam which arises at its destination if the mass flow rate is 0.125 kg of steam per second? (At 2.05 MPa, t sat = 213.67 o C, h f = 914.52 kJ/kg, h g = 2800 kJ/kg.

Steam (water vapor) enters a stainless steel tube with inner diameter 4cm at 300°C and 60 bar absolute pressure, with a velocity of 8.00 m/s.  The steam exits the tube at 300°C and 40 bar absolute pressure. a. Assuming the water vapor behaves as an ideal gas, calculate the steam mass flow rate and the change in kinetic energy (in Watts). b. Using the specific volume values from table B.7, calculate the steam mass flow rate and the change in kinetic energy (in Watts).

A steam condenser operates at 61 cm of Hg vacuum. The steam enters the condenser with a moisture content of 87%. Cooling water is supplied to the condenser at a temperature of 20 C with a terminal difference of 5 C. The water velocity of water inside the tube is to be limited to 2.5 m/s when using 2.5 cm outside diameter tubes whose thickness is 1.75 mm. The overall heat transfer coefficient of the tubes could be approximated by the equation U = 1213.4(v1/2), W/(m2-C) where v is the water velocity in m/sec.  Determine:  1. The required mass flow of cooling water, kg/s  2. The required capacity of the circulating pump, liter per second  3. The Logarithmic Mean Temperature Difference, C  4. The required Number of tubes  5. The required length of tubes, (m), and number of passes

Option d is 200