An incompressible, viscous fluid is shownbetween horizontal, infinite parallel plates. The plates move in opposite directions with constant velocities U1and U2. The flow is laminar. The pressure gradient in the x-direction is zero, and the only body force is due to the fluid weight. Under steady-flow condition:(a)Solve the system of mass conservation equation and x-component of Navier-Stokes equationsto obtain a differential equation forthe velocity component, u.(b)State the proper boundary conditions, and solve for the velocity distribution, u(y).(c)Derivean expression for the volume flow rate, Q, based on the unit width of the flow(width

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.

Fluids at rest possess no flow energy. a)- true b)- false

Air is to be cooled in the evaporator section of a refrigerator by passing it over a bank of 0.8-cm-outer-diameter and 0.4-m-long tubes inside which the refrigerant is evaporating at -20°c. air approaches the tube bank in the normal direction at 0°c and 1 atm with a mean velocity of 4 m/s. the tubes are arranged in-line with longitudinal and transverse pitches of sl- st 1.5 cm. there are 30 rows in the flow direction with 15 tubes in each row. determine (a) the refrigeration capacity of this system and (b) pressure drop across the tube bank. evaluate the air properties at an assumed mean temperature of -5°c and 1 atm. is this a good assumption?