Awindow-mounted air conditioner supplies 29 m3/min of air at 15°c, 1 bar to a room. air returns from the room to the evaporator of the unit at 22°c. the air conditioner operates at steady state on a vapor-compression refrigeration cycle with refrigerant 22 entering the compressor at 4 bar, 10°c. saturated liquid refrigerant at 14 bar leaves the condenser. the compressor has an isentropic efficiency of 70%, and refrigerant exits the compressor at 14 bar.
determine the compressor power, in kw, the refrigeration capacity, in tons, and the coefficient of performance.

Ahouse has the following electrical appliance usage (1) single 40w lamp used for 4 hours per day (2) single 60w fan used for 12 hours per day (3) single 200w refrigerator that runs 24 hours per day with compressor run 12 hours and off 12 hours find the solar power inverter size in watt with correction factor of 1.25.

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.

Water at 55c flows across a flat plate whose surface temperature is held constant at 95c. if the temperature gradient at the plate's surface for a given value of x is 18 c/mm, find a) local heat transfer coefficient. b) heat flux