Item 2
What does a photovoltaic cell do?

collects the sun’s energy for heating pools

converts the sun’s energy into electricity

converts electricity into heat for pools

uses pumps and the sun’s energy to heat buildings

On a average work day more than work place firs are reorted

Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false

Refrigerant 134a enters an insulated compressor operating at steady state as saturated vapor at -26°c with a volumetric flow rate of 0.18 m3/s. refrigerant exits at 9 bar, 70°c. changes in kinetic and potential energy from inlet to exit can be ignored. determine the volumetric flow rate at the exit, in m3/s, and the compressor power, in kw.