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The two diagrams at left illustrate how vapor pressure
acts on foods in CVAP cabinets. Click on either picture for a larger
view.
Vapor pressure is what controls the evaporation rate of moisture from
foods in CVAP cabinets. The controls on a CVAP cabinet can be set so
that the vapor pressure surrounding the food is the same as the food
itself. In that case the food neither looses nor gains moisture. It
neither dries out or gets soggy. It is in a state of 'equilibrium'.
With CVAP, the vapor pressure, or rate of evaporation, is set using
the differential control
method, an integral and exclusive part of the CVAP concept. |
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