Blog, Refrigeración

Enfriado en vacío

Enfriado en vacío (vacuum cooling): Para hortalizas de hoja que no pueden pasar por túnel de aire ni agua. Se introduce la hortaliza empacada y acomodada en palés en un cilindro de hierro reforzado donde se hace un vacío de 4 mm de Hg (la presión atmosférica es de 760 mm de Hg). En las condiciones de baja presión, el agua de los tejidos se evapora. El calor latente necesario lo toma de las hojas enfriándolas. Hay además en el interior del cilindro un equipo de enfriamiento. Se aplica a lechuga, espinaca.

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