| 摘要 |
<p>The invention relates to a plant for cryogenically cooling or deep-freezing materials, including a cryogenic tunnel, characterized in that: an exchanger/condenser outside the tunnel, into which all or a portion of the cold gases resulting from the evaporation of the cryogenic fluid employed in the tunnel are fed, is provided, enabling said gases to give up at least a portion of the negative calories thereof to the condenser before being rejected to the outside; an exchanger/cooling battery is provided inside the tunnel, preferably in the entrance area thereof, the cooling battery consisting of a mechanical refrigeration system along with said condenser.</p> |
