An out-of-control nuclear reactor core is being sprayed with 2 kg/s liquid water at 20°c for emergency cooling. the water impacts the reactor core and vaporizes. there is a release valve at the top of the reactor that maintains a pressure of 150 kpa gage pressure inside the containment vessel. if the reactor is filled with saturated steam vapor, find:

1) the rate of heat release by the reactor core

2) the volumetric flow rate of steam entering the pressure relief valve

Calculate the bore of a cylinder that has a stroke of 18 inches and an extension time of 6 seconds at a flow rate of 4 gal/min.

A2-m rigid tank initially contains saturated water vapor at 100 kpa. the tank is connected to a supply line through a valve. steam is flowing in the supply line at 600 kpa and 300 c. the valve is opened, and steam is allowed to enter the tank until the pressure in the tank reaches the line pressure, at which point the valve is closed. a thermometer placed in the tank indicates that the temperature at the final state is 200°c. determine (a) the mass of steam that has entered the tank (b) the amount of heat transfer.

Water vapor initially at 10 bar and 400 °c is contained within a piston-cylinder assembly. the water lost heat to the surrounding according to isochoric (iso-volumetric) process until its temperature is 150 °c. the water is then condensed isothermally to saturated liquid. for the water as a system, calculate the work in kj/kg