Ajournal is required for a shaft with the following specifications. nominal diameter is 40 mm, diameter clearance is 60 um, rotational speed is 1450 rpm, load on the bearing 2100 n, inlet temperature of the lubricant is 60 degrees celcius and bearing length to diameter 1. sae is 10, change temperature is 15 degrees celsius . determine the overall temperature rise in the bearing and determine the flow rate of the lubricant required.

Two flowing streams of argon gas are adiabatically mixed to form a single flow/stream. one stream is 1.5 kg/s at 400 kpa and 200 c while the second stream is 2kg/s at 500 kpa and 100 ? . it is stated that the exit state of the mixed single flow of argon gas is 150 c and 300 kpa. assuming there is no work output or input during the mixing process, does this process violate either the first or the second law or both? explain and state all your assumptions.

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

Give heat transfer applications for the following, (i) gas turbines (propulsion) ) gas turbines (power generation). (iii) steam turbines. (iv) combined heat and power (chp). (v) automotive engines