Calculate the height of a column of water equivalent to atmospheric pressure of 1bar if the water is at 150C. What is the height if the water is replaced by Mercury?

A closed metallic boiler drum of capacity 0.24m³ contain steam at a pressure of 11bar and a temperature of 200ºC. Calculate the quantity of steam in the vessel. At what pressure in the vessel will the steam be dry and saturated if the vessel is cooled?

One Kg of steam at 1.5MPa and 400ºC in a piston – cylinder device is cooled at constant pressure. Determine the final temperature and change in volume. If the cooling continues till the condensation of two – third of the mass.

Steam at gauge pressure of 1.5Mpa is supplied to a steam turbine, which rejects it to a condenser at a vacuum of 710mm Hg after expansion. Find the inlet and exhaust steam pressure in pascal, assuming barometer pressure as 76cm of Hg and density of Hg as 13.6×10³ kg/m^3.

A steel cylinder of mass 2 kg contains 4 L of liquid water at 25°C at 200 kPa. Find the total mass and volume of the system. List two extensive and three intensive properties of the water 

The black grille on the back of a refrigerator has a surface temperature of 95 F with a total surface area of 10 ft². Heat transfer to the room air at 70 F takes place with an average convective heat transfer coefficient of 3 Btu/h ft² R. How much energy can be removed during 15 minutes of operation?

A room is heated with an electric space heater on a winter day. Examine the following control volumes, regarding heat transfer and work , including sign. 

(a) The space heater. 

 (b) Room 

(c) The space heater and the room together 

Does the statement of Clausius require a constant T for the heat transfer as in a Carnot cycle? 

How can you change s of a substance going through a reversible process?

When a substance has completed a cycle v, u, h and s are unchanged. Did anything happen? Explain.