Quantity

units

name

formula

Predicted unenhanced CO₂ transfer velocity

cm hr^-1

k_un

(0.710362 + 0.194312 * rpm ) * (600 / sc)^0.5

based on acidified seawater data in figure 7-1

"stagnant film" thickness

m

d

360000 * D / k_un

Total Rate of reaction

mol kg^-1 s^-1

k_tot

kCO₂ + kOHk_w / h

"t"

1 + h² / ( k₁*k₂ + k₁*h)

"b"

d * (k_tot * t / D)^0.5

Enhancement factor

ef

t / [(t-1) + tanh (b) / b] (note tanh = hyperbolic tangent)

Predicted enhanced CO₂ transfer velocity.

cm hr^-1

k_en

k_un * ef