Device for cooling chemical smoke

A device for cooling chemical smoke for creating a low lying fog effect comprising:

• (a) first and second chambers arranged in heat exchange relationship;
• (b) said first chamber adapted for maintaining a flow of chemical smoke therethrough;
• (c) said second chamber adapted for receiving liquid CO.sub.2 under pressure and including means for transforming said liquid CO.sub.2 to dry ice in situ;
• and
• (d) liquid CO.sub.2 input means for connecting a source of liquid CO.sub.2 under pressure to said second chamber;
• whereby the chemical smoke flowing through said first chamber is cooled by the dry ice in said second chamber.

A method for cooling chemical smoke for creating a low lying fog effect comprising the steps of:

• (a) flowing chemical smoke through a first chamber;
• (b) providing a second chamber in heat exchange relationship with said first chamber;
• (c) charging liquid CO.sub.2 under pressure into said second chamber;
• and
• (d) transforming said liquid CO.sub.2 to dry ice in said second chamber, whereby the chemical smoke flowing through said first chamber is cooled by the dry ice in said second chamber.