Ashell-and-tube heat exchanger is used for heating 15 kg/s of oil (cp = 2.0 kj/kg · k) from 20°c to 46°c. the heat exchanger has one shell pass and six tube passes. water enters the shell side at 85°c and leaves at 65°c. the overall heat transfer coefficient is estimated to be 1000 w/m2 · k. calculate the rate of heat transfer and the heat transfer area.

Steel is coated with a thin layer of ceramic to protect against corrosion. what do you expect to happen to the coating when the temperature of the steel is increased significantly? explain.

Items are similar to the free issue items, but their access is limited. (clo5) a)-bin stock items free issue b)-bin stock controlled issue c)-critical or insurance spares d)-rebuildable spares e)-consumables

A2-m rigid tank initially contains saturated water vapor at 100 kpa. the tank is connected to a supply line through a valve. steam is flowing in the supply line at 600 kpa and 300 c. the valve is opened, and steam is allowed to enter the tank until the pressure in the tank reaches the line pressure, at which point the valve is closed. a thermometer placed in the tank indicates that the temperature at the final state is 200°c. determine (a) the mass of steam that has entered the tank (b) the amount of heat transfer.