Hot engine oil at 150°c is flowing in parallel over a flat plate at a velocity of 2 m/s. surface temperature of the 0.5-m-long flat plate is constant at 50°c. determine (a) the local convection heat transfer coefficient at 0.2 m page 474 from the leading edge and the average convection heat transfer coefficient, and (b) repeat part (a) using the churchill and ozoe (1973) relation.

An air conditioning system consist of a 5 cm diameter pipe, operating at a pressure of 200 kpa. the air initially enters the pipe at 15°c with a velocity of 20 m/s and relative humidity of 80%. if the heat supply throughout the process is 960 w, determine the relative humidity and the temperature at the outlet

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.

Different types of steels contain different elements that alter the characteristics of the steel. for each of the following elements, explain what the element does when alloyed with steel.