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.

Coiled springs ought to be very strong and stiff. si3n4 is a strong, stiff material. would you select this material for a spring? explain.

Which of the following ziegler nichols tuning methods the response of the controller to a step input should exhibit an s-shaped curve? a)-open loop mode b)-closed loop mode c)-both modes (open & closed) d)-none of the modes (open & closed)

An external consultant recommends that a plant installs a bank of capacitors for power factor correction. this will reduce the peak electrical demand charges by an average of 93 kw every month. the plant current pays $13 per kw in peak demand charges. the capacitor bank will include 223 kw of fixed capacitors, and 183 of variable capacitors. the fixed capacitors cost $59 per kw, and the variable capacitors will cost $65 per kw. the consultant charges 21% of the equipment costs to install the capacitors. because this project will reduce the demand for the electric utility, they are prepared to provide a one-time rebate of $42 per kw of reduced demand. what is the simple payback period for this project (in years)?