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Chimney: Mass Density of Air
pa = Pa / Ra Ta
Chimney: Mass Density of Gas
p_gas = P_gas / R_gas T_gas
Chimney: Draft (Pressure)
Draft = δ(h) = pg(h) = (p_air - p_gas) g h
Chimney: Height
h = Draft / (p_air - p_gas) g
Reciprocating Pump: Theoretical Discharge
Q_theo = A L N k
A = Area
L = Length
N = Speed in rps
K = acting = 1 for single = 2 for double
Reciprocating Pump: Slippage
Slippage = Q_theo - Q_actual
Reciprocating Pump: Power
Power = Q γ TDH = A x L x N x k x p x g x TDH
Windmill: Power
Power = KE = ½ mv²
Windmill: Mass not given
m = p Vol_flow
m = p Vel Area
Pump:Total Dynamic Head
TDH = Bernoulli = (P2 – P1 ) / γ + [V2 2 – V1 2)/2g] + [Z2 – Z1 ]
Pump:Total Dynamic Head when Velocity not given
V = Q / A
Pump: Water Power
WP = γ Q TDH
WP = mw g TDH
Pump: Q not given but mass and density are
m_w = p Q