$(4$ points$)$

A steam heat engine is used to supply $19600$ hp of power to a nearby city. The heat engine has a thermal efficiency of $34\%.$

What is the rate of heat rejection by this heat engine?

Btu$/$s

If this heat engine was to use the burning of coal $(HV=9100Bt\frac{u}{l}bm$ as the source of heat, what is the rate of coal consumption for this power plant?

lbm$/$s

If this heat engine was to use the burning of diesel fuel $(HV=15400Bt\frac{u}{l}bm)$ as the source of heat, what is the rate of fuel consumption for this power plant?

$lb\frac{m}{s}$

If this heat engine was to use the burning of natural gas $(HV=960B\frac{u}{f}{t}^3)$ as the source of heat, what is the rate of gas consumption for this power plant?

$f\frac{t^3}{s}$