An adiabatic gas turbine expands air at 1350 kpa and 600 degrees celsius to 130 kpa and 157 degrees celsius. inlet area is 0.4 m square & velocity is 50 m/s. exit area is 1 m square, mass flow rate (kg/s) & power produced (mw) are, respectively a) 108,48 b) 115, 51 c) 99, 44 d) 118,52

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)?