3.116 two kg of oxygen fills the cylinder of a piston-cylinder assembly. The initial Volume and pressure are 2m^3 and 1 bar respectively. Heat transfer to the oxygen occurs at constant pressure until the volume is doubled. Determine the heat transfer in the process, in kJ, assuming the spoecific heat ratio is constant, k

Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.