| abstract |
The present invention relates to a plant cooling method and plant (1) of a temperature T1 at a temperature T3 lower than T1, wherein said plants at said temperature T1 are subjected to a reduced pressure so as to vaporize a portion of the water contained in said plants and cool them to said temperature T3, characterized in that a fractional cooling of said plants comprising a first step of cooling the temperature T1 to an intermediate temperature T2 by a first vaporization in a first cooling chamber (4) under reduced absolute pressure P1; and a second step of cooling the temperature T2 at the temperature T3, by a second vaporization in a second chamber (9) cooling under a reduced absolute pressure P2, said plants (1) being at a said temperature T3 less than 30 ° C, preferably below 28 ° C, after said second cooling step. |