Power plants – Combustion products used as motive fluid
Patent
1995-10-31
1997-12-09
Casaregola, Louis J.
Power plants
Combustion products used as motive fluid
60 3955, F02C 330
Patent
active
056947615
ABSTRACT:
A gas turbine engine assembly including improved means for cooling the combustor to preclude thermal failure of the combustor and to preclude NO.sub.x formation. The system includes a liquid pump driven by the turbine shaft and supplying a cooling fluid to an annular chamber defined around the central combustion chamber of the combustor. The cooling fluid is thereby placed in heat exchange relation to the combustor to absorb heat from the combustion products within the combustion chamber and convert the fluid to a relatively higher energy condition, whereafter the fluid in its high energy condition is injected into the combustion chamber for mixture with the combustion products and delivery with the combustion products to the turbine inlet. The cooling liquid may totally fill the annular cooling chamber around the combustion chamber or may partially fill the cooling chamber, or the cooling fluid arriving at the cooling chamber may already be in a gaseous state so that the cooling chamber is totally filled with a vapor.
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