Kossovich number

Kossovich number ( $\mathrm {Ko}$ ${\ displaystyle \ mathrm {Ko}}$ ${\ mathrm {Ko}}$ ) Is a similarity criterion , in the theory of drying, which gives a relationship between the amounts of heat expended in evaporating a liquid and heating a wet body. It is defined as follows:

\mathrm {Ko} ={\frac {\Lambda \xi \Delta \theta }{c\Delta T}},

{\ displaystyle \ mathrm {Ko} = {\ frac {\ Lambda \ xi \ Delta \ theta} {c \ Delta T}},}

{\ mathrm {Ko}} = {\ frac {\ Lambda \ xi \ Delta \ theta} {c \ Delta T}},

Where

$\Lambda$ ${\ displaystyle \ Lambda}$ $\ Lambda$ - specific heat of vaporization of the liquid;
$\xi ={\frac {du}{d\theta }}$ ${\ displaystyle \ xi = {\ frac {du} {d \ theta}}}$ $\ xi = {\ frac {du} {d \ theta}}$ - body moisture capacity ( $u$ ${\ displaystyle u}$ $u$ - moisture content);
$c$ ${\ displaystyle c}$ $c$ - specific heat of the wet body;
$\Delta \theta$ ${\ displaystyle \ Delta \ theta}$ $\ Delta \ theta$ - the potential difference of moisture transfer;
$\Delta T=T-T_{0}$ ${\ displaystyle \ Delta T = T-T_ {0}}$ $\ Delta T = T-T_ {0}$ - the difference between the final and initial temperatures.

Literature

A. V. Lykov Theory of Drying. - Energy, 1968.

Hall Carl W. Laws and Models: Science, Engineering and Technology. - CRC Press, Boca Raton, 2000 .-- 524 p. - ISBN 8449320186 .

Kossovich number

Literature

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