Estimating fraction of heat injected in latent form (steam-drive)

Input(s)

$C_{w}$: Specific Heat of Water (BTU/lbm F)

$T_{i}$: Injection Temperature $\left({ }^{\circ} \mathrm{F}\right)$

$T_{a}$: Ambient Temperature $\left({ }^{\circ} \mathrm{F}\right)$

$f_{\text {sdh }}$: Steam Quality (fraction)

$L_{h c}$: Latent Heat of Condensation (BTU/lbm)

Output(s)

$f_{h v}$: Fraction of Heat Injected in Latent Form (fraction)

Formula(s)

$$ \mathrm{f}_{\mathrm{hv}}=\left(1+\left(\left(\mathrm{C}_{\mathrm{w}}\right) * \frac{\mathrm{T}_{\mathrm{i}}-\mathrm{T}_{\mathrm{a}}}{\mathrm{f}_{\mathrm{sdh}} * \mathrm{~L}_{\mathrm{hc}}}\right)\right)^{-1} $$

Reference(s)

Pratts, M. (1986). Thermal Recovery Monograph Vol. 7. Society of Petroleum Engineers, Houston, Page: 77.