(under subclass 205) Process directed to utilizing indirect heat exchange within the system.
(1) Note. To come within the purview of this subclass the patent must specifically claim transferring heat within the system from one fluid to another through a solid material, such as using the incoming fuel to cool the discharge nozzle. The latter is being heated by the products of chemical reaction.
SEE OR SEARCH CLASS
252, Compositions,
71+, for a composition designed for use in heat exchange.