| 摘要 |
An apparatus for the controlled cooling of chemical tanks containing a chemical solution (4) which must be kept at a first prescribed temperature (T1) comprises at least one heat-exchanger coil (1,2) immersed inside of a chemical tank (3) and through which there is made to circulate a flow of an inert gas (23); the apparatus comprises storage means (50-53) for storing and cooling a prescribed volume of inert gas (23) at a second prescribed temperature lower than the first prescribed temperature (T1), feeding means (56-58) for feeding the storage means (50-53) with inert gas (23) coming from a main supply line (55), and valve means (62,65,63,66) interposed between the storage means (50-53) and an inlet (I1,I2) of the at least one heat-exchanger coil (1,2) for controlling the supply of cooled inert gas (23) to the heat-exchanger coil (1,2). <IMAGE> |
