A sealed constant-volume container has 0.8 kg of liquid water and 0.2 kg of water vapor at 0.10 MPa pressure. What is the final pressure, temperature and state after 1674 kJ of heat are added.

The wall of a spherical steel tank k, = 17 m. K thick contains hot oil at 100°C. On the outside of the tank 10mm of spray W urethane insulation k, = 0.026 m. K of 1m in diameter and 100 mm h = 16. is added to stop the oil from cooling. If the outside temperature is 25°C, W m².K needs to be added to keep the tank at 100°C for pumping reasons? What are the overall heat transfer coefficients (Uo and Ui)? and h = 5 (₁ m². K how much heat

In a movie theater in winter, 500 people are watching a movie. The heat losses through the walls, windows, and the roof are estimated to be 150,000 Btu/h. Determine if the theater needs to be heated or cooled.  

Problem 8. Energy is generated uniformly in a 20cm thick wall the steady state temperature distribution of the wall is indicated on the table below; z (cm) T (C) 8 10 12 14 16 18 20 0 2 4 6 150 177 205 230 250 272 292 310 330 345 360 If thermal conductivity of the wall is 15 W/m.K and the indicated temperatures are in °C, determine the average rate of heat generation in unit volume.