An ideal vapour compression cycle using refrigerant r-22 works at evaporating temperature of-10°c. isentropic compressor requires 32 kj/kg as work of compression. determine the following using the ph diagram for r22: (a)-condensation pressure and temperature (b)-the quality(x) of refrigerant at the inlet of evapouration (c)- refrigerating effect (d)- coefficient of performance (e) heat rejection by condenser

Inspection for bearing condition will include: (clo4) a)-color b)-smell c)-size d)-none of the above

Find the kinematic pressure of 160kpa. for air, r-287 j/ kg k. and hair al viscosity of air at a temperature of 50°c and an absolute (10 points) (b) find the dynamic viscosity of air at 110 °c. sutherland constant for air is 111k

Along 8-cm diameter steam pipe whose external surface temperature is 900c connects two buildings. the pipe is exposed to ambient air at 70c with a wind speed of 50 km/hr blowing across the pipe. determine the heat loss from the pipe per unit length. (b) air at 500c enters a section of a rectangular duct (15 cm x 20 cm) at an average velocity of 7 m/s. if the walls of the duct are maintained at 100c. a) the length of the tube for an exit temperature of the air to be 40 0c. b)the rate of heat transfer from the air. c) the fan power needed to overcome the pressure drop in this section of the duct.