Anatural-circulation pillow-block bearing with lyd 5 1 has a journal diameter d of 2.500 in with a unilateral tolerance of 20.001 in. the bushing bore diameter b is 2.504 in with a unilateral tolerance of 0.004 in. the shaft runs at an angular speed of 1120 rev/min; the bearing uses sae grade 20 oil and carries a steady load of 300 lbf in shaft-stirred air at 70°f with a 5 1. the lateral area of the pillow-block housing is 60 in2 . perform a design assessment using minimum radial clearance for a load of 600 lbf and 300 lbf. use trumpler’s criteria.

Apiston-cylinder with a volume of 0.25 m3 holds 1 kg of air (r 0.287 k/kgk) at a temperature of 100 c. heat transfer to the cylinder causes an isothermal expansion of the piston until the volume triples. how much heat is added to the piston-cylinder?

Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.

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