Acoal-burning steam power plant produces a net power of 300 mw with an overall thermal efficiency of 33 percent. the actual gravimetric air–fuel ratio in the furnace is calculated to be 12 kg air/kg fuel. the heating value of the coal is 28,000 kj/kg. determine the amount of coal consumed during a 24-hour period. (you must provide an answer before moving to the next part.) the amount of coal consumed is kg/s.

Apiping systems consists of 6 m of 6-std type k and 12 m of 4-std type k, both drawn copper tubing. the system conveys ethylene glycol at a rate of 0.013 m3/s. the pressure drop across the system is to be calculated. there are two 90° elbows in the 6-in pipe, a reduction from the 6-in pipe to the 4-in pipe and four 90° elbows in the 4-in pipe. all fittings are soldered (same as flanged) and regular. the inlet and outlet of the system are at the same height.