Power

Power, abbreviated as P or PWR, is the rate of doing work or the rate of using energy per unit time.

 

Power formula

\(\large{ P = \frac{W}{t}   }\)

\(\large{ P = F \; v }\)

\(\large{ P = \frac{F \; d}{t} }\)

\(\large{ P = \Delta p \; Q }\)

\(\large{ P = \gamma \; h_l \; Q }\)

\(\large{ P = \frac{E}{t}   }\)

\(\large{ P = I^2 \; R   }\)

Where:

Units	English	Metric
\(\large{ P }\) = power	\(\large{W}\)	\(\large{\frac{kg-m^2}{s^3}}\)
\(\large{ I }\) = current	\(\large{I}\)	\(\large{\frac{C}{s}}\)
\(\large{ d }\) = displacement	\(\large{ft}\)	\(\large{m}\)
\(\large{ E }\) = energy	\(\large{lbf-ft}\)	\(\large{J}\)
\(\large{ F }\) = force	\(\large{lbf}\)	\(\large{N}\)
\(\large{ h_l }\) = head loss	\(\large{ft}\)	\(\large{m}\)
\(\large{ \Delta p }\) = pressure drop	\(\large{\frac{lbf}{in^2}}\)	\(\large{Pa}\)
\(\large{ R }\) = resistance	\(\large{\Omega}\)	\(\large{\frac{kg-m^2}{s^3-A^2}}\)
\(\large{ \gamma }\)  (Greek symbol gamma) = specific weight	\(\large{\frac{lbf}{ft^3}}\)	\(\large{\frac{N}{m^3}}\)
\(\large{ t }\) = time	\(\large{sec}\)	\(\large{s}\)
\(\large{ v }\) = velocity	\(\large{\frac{ft}{sec}}\)	\(\large{\frac{m}{s}}\)
\(\large{ Q }\) = volumetric flow rate	\(\large{\frac{ft^3}{sec}}\)	\(\large{\frac{m^3}{s}}\)
\(\large{ W }\) = work	\(\large{lbf-ft}\)	\(\large{J}\)