An adiabatic heat exchanger is used to heat cold water at 15°c entering at a rate of 5 kg/s by hot air at 77°c entering at a rate of 3 kg/s. the exit temperature of the hot air is 25°c. deterimine the exit temperature (°c) of the cold water.

Afull journal bearing has a journal diameter of 27 mm, with a unilateral tolerance of -0.028 mm. the bushing bore has a diameter of 27.028 mm and a unilateral tolerance of 0.04 mm. the l/d ratio is 0.5. the load is 1.3 kn and the journal runs at 1200 rev/min. if the average viscosity is 50 mpa-s, find the minimum film thickness, the power loss, and the side flow for the minimum clearance assembly.