Apiston-cylinder device initially refrigerant-134a at 100 kpa and 20°c. heat is now trans- ferred to the refrigerant from a source at 150°c, and the pis- ton which is resting on a set of stops, starts moving when the pressure inside reaches 120 kpa. heat transfer continues unti the temperature reaches 80°c. assuming the surroundings to be at 25°c and 100 kpa, determine (a) the work done, (b) the 8 heat transfer, (c) the exergy destroyed, and (d) the second-law efficiency of this process.

What precautions should you take to prevent injuries when dealing with heavy loads?

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

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.