An isolated cylinder-plunger device contains 0.018 m^3 of saturated vapor of r-134a at a pressure og 0.6 mpa. the refrigerant stops expanding in a reversible way until the pressure drops to 0.16 mpa. determine the exergy change in the refrigerant durinf this process and the reversible work. suppose the surroundings at 25 c and 100 kpa.

What precautions should you take to prevent injuries when dealing with heavy loads?

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.

The filament of an incandescent lamp has a temperature of 2000k. calculate the fraction of radiation emitted in the visible light band if the filament is approximated as blackbody