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Some factors affecting the evaporation of water from soil II. The discontinuity of the drying process

Published online by Cambridge University Press:  27 March 2009

E. A. Fisher
E. A. Fisher
Affiliation:
The Research Association of British Flour-Millers, St Albans.
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Extract

Some of the factors affecting the rate of loss of water from a drying system are shortly reviewed. These factors fall into two groups: (1) the drying system itself, and (2) the environmental conditions. The second group may include (a) diffusion of water vapour through the air, (b) bulk air movements due to (i) temperature gradients between different parts of the drying vessel, (ii) temperature lowering of the drying mass itself due to evaporation, (iii) lower density of moist air, (iv) inevitable disturbances introduced by experimental conditions such as weighing or movement of apparatus, (v) the geometry of the system. It is shown that of the external factors the most important are (2 (a)), (2 (b) (i)) and (2 (b) (ii)); (2 (b) (iv)) may produce irregularities in the rate curves of airdry granular materials; (2 (b) (iii)) and (2 (b) (v)) appear to have little or no effect.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 17 , Issue 3 , July 1927 , pp. 407 - 419
Copyright
Copyright © Cambridge University Press 1927

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References

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