Kernforschungsanlage Julich Gesellschaft MIT Beschrankter Haftung

Gunter Hewing

Siegfried Forster

Manfred Kleemann

Jasbir Singh

Gunter Dibelius

Elongated ceramic heat exchange units are arranged with each such unit axly oriented and all arranged parallel to each other in a ring surrounding the compressor, gas turbine and combustion chamber of a gas turbine motor. Each heat exchange unit has a multiplicity of rectangular slot channels through alternate ones of which the hot exhaust gas and the compressed air supply flow in counter-current. The cross sections of these channels all have their long dimension disposed substantially radially with respect to the axis of symmetry common to the principal components. The respective inputs for the two sets of channels are both from the inside of the ring arrangement but at opposite ends of each heat exchanger element; whereas the exit openings are in the end faces of the heat exchanger elements. The outlets for the compressed gas that has been heated in the heat exchanger communicate with a space that not only leads the compressed air to the compressed chamber but also allows the compressed air to reach space between the outside of the heat exchanger and an external casing, so as to cause the compressed air to apply its pressure to the heat exchanger elements tightening the seals between them and between each element and the input ducts on the inside of the ring. The same air pressure also applies an axial force to the heat exchanger elements, tightening the seals between them and the discharge duct for the exhaust gas. When the engine is not operating, the absence of this pressure facilitates replacement of a heat exchanger element.

Vehicular propulsion gas turbine motor

A nuclear power-generating installation comprises three power-generating bines which are operated by three partial gas streams heated in separate passages of a nuclear reactor. After traversing the power-generating turbines the partial gas streams are cooled in respective recuperative heat exchangers to recover residual useful heat therefrom and are combined into a lesser number of gas streams each of which is subjected to at least two compression stages with at least one intervening cooling stage in which all of the gas is combined to flow as a total gas stream through at least one such cooler. Following the last compression stage the gas is again subdivided into three partial streams for preheating in the aforementioned recuperative heat exchangers before traversing the nuclear reactor for the main heating.

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Julich, Germany

Gunter Hewing