A0.2-m-long and 25-mm-thick vertical plate (k=15 w/m∙k) separates the hot water from the cold water. the plate surface exposed to the hot water has a temperature of 100°c, and the temperature of the cold water is 7°c. determine the temperature of the plate surface exposed to the cold water (ts, c). hint: the ts, c has to be found iteratively. start the iteration process with an initial guess of 53.5°c for the ts, c.

The temperature of air decreases as it is compressed by an adiabatic compressor. a)- true b)- false

Fluids at rest possess no flow energy. a)- true b)- false

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)?