Total heat energy consumed by the engine

Input(s)

$w_{f}$: Mass Rate of Fuel Consumption $(\mathrm{lbm} / \mathrm{min})$

$\mathrm{H}$: Heating value of Fuel ( $\mathrm{ft} \mathrm{lbf} / \mathrm{Btu})$

Output(s)

$Q_{i}$: Total Heat Energy consumed by the Engine (hp)

Formula(s)

$$ Q_{i}=\frac{w_{f} H}{33,000} $$

Reference(s)

Bourgoyne, A. T., Millheim, K. K., Chenevert, M. E., \& Young, F. S. (1986). Applied Drilling Engineering, Page: 6 .