| 摘要 |
The invention relates to a method and installation for the cooling of plants (1) from a temperature T1 to a lower temperature T3, in which the plants at temperature T1 are subjected to a reduced pressure in order to vaporise part of the water contained therein and to cool said plants to temperature T3. The invention is characterised in that the plants are subjected to fractional cooling comprising: a first step consisting in cooling said plants from temperature T1 to an intermediate temperature T2 by means of a first vaporisation process in a first cooling chamber (4) under a reduced absolute pressure P1; and a second step consisting in cooling same from temperature T2 to temperature T3 by means of a second vaporisation process in a second cooling chamber (9) under a reduced absolute pressure P2, said plants (1) being at a temperature T3 which is less than 30 °C and, preferably, less than 28 °C after the second cooling step. |
