Arefrigerator operates on the ideal vapor compression refrigeration cycle with the following conditions. (i) the working fluid is r-134a. (ii)the pressure at the condenser is 700 kpa.(iii) the temperature of the evaporator is -6 °c. determine the required mass flow rate and the required power

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

Determine whether or not it is possible to compress air adiabatically from k to 140 kpa and 400 k. what is the entropy change during this process?

Ajournal bearing has a journal diameter of 3.250 in with a unilateral tolerance of 20.003 in. the bushing bore has a diameter of 3.256 in and a unilateral tolerance of 0.004 in. the bushing is 2.8 in long and supports a 700-lbf load. the journal speed is 900 rev/min. find the minimum oil film thickness and the maximum film pressure for both sae 20 and sae 20w-30 lubricants, for the tightest assembly if the operating film temperature is 160°f. a computer code is appropriate for solving this problem.