United Technologies Corporation

Pierre J Marteney

Louis J Spadaccini

Meredith Bright Colket, Iii

Alvin B Stiles

An endothermic fuel system for cooling a heat source, which may be on a high speed vehicle, has an endothermic fuel decomposition catalyst which is capable of endothermically decomposing an endothermic fuel. The system also includes means for transferring thermal energy from the heat source to the catalyst in order to heat the catalyst to a temperature sufficient to endothermically decompose at least a portion of the endothermic fuel and to cool the heat source and means for contacting the heated catalyst with the endothermic fuel stream to cause the endothermic fuel stream to absorb the thermal energy and endothermically decompose into reaction products.

Endothermic fuel system

A heat source, may be on a high speed vehicle, may be cooled by transferring thermal energy from the heat source to an endothermic fuel decomposition catalyst in order to heat the catalyst to a temperature sufficient to crack or dissociate at least a portion of an endothermic fuel stream. The endothermic fuel is selected from the group consisting of normal paraffinic hydrocarbons and methanol. The heated endothermic fuel decomposition catalyst is contacted with the endothermic fuel stream at a liquid hourly space velocity of at least about 10 hr.sup.-1 to cause the endothermic fuel stream to crack or dissociate into a reaction product stream.

Method of cooling with an endothermic fuel

A heat source, which may be on a high speed vehicle, may be cooled by transferring thermal energy from the heat source to an endothermic fuel decomposition catalyst to heat the catalyst to a temperature sufficient to crack at least a portion of an endothermic fuel stream. The endothermic fuel is selected from the group consisting of isoparaffinic hydrocarbons, blends of normal and isoparaffinic hydrocarbons, and conventional aircraft turbine fuels. The heated endothermic fuel decomposition catalyst is contacted with the endothermic fuel stream at a liquid hourly space velocity of at least about 10 hr.sup.-1 to cause the endothermic fuel stream to crack into a reaction product stream.

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Manchester, CT, United States of America

Pierre J Marteney