The condensation of water vapor in compressed air lines is a major concern in industrial facilities. in fact, compressed air is often dehumidified to avoid the problems associated with condensation. consider a compressor that compresses ambient air from the local atmospheric pressure of 92 kpa to a pressure of 800 kpa (absolute). the compressed air is then cooled to the ambient temperature as it flows through the compressed air lines. disregarding any pressure losses, determine if there will be any condensation in the compressed air lines on a day when the ambient air is at 25 °c and 40 percent relative humidity.

Amass of m 1.5 kg of steam is contained in a closed rigid container. initially the pressure and temperature of the steam are: p 1.5 mpa and t 240°c (superheated state), respectively. then the temperature drops to t2= 100°c as the result of heat transfer to the surroundings. determine: a) quality of the steam at the end of the process, b) heat transfer with the surroundings. for: p1.5 mpa and t 240°c: enthalpy of superheated vapour is 2900 kj/kg, specific volume of superheated vapour is 0. 1483 m/kg, while for t 100°c: enthalpy of saturated liquid water is 419kj/kg, specific volume of saturated liquid water is 0.001043m/kg, enthalpy of saturated vapour is 2676 kj/kg, specific volume of saturated vapour is 1.672 m/kg and pressure is 0.1 mpa.

Draw the engineering stress-strain curve for (a) bcc; (b) fcc metals and mark important points.

Journeyman training is usually related (clo2) a)-to specific tasks b)-to cost analysis of maintenance task c)-to control process to ensure quality d)-to installation of machinery