Importance

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Abstract

A fuel cooling apparatus includes a fuel cooling pipe having an inner circumferential surface and a hermetically sealed space formed therein and a heat pipe allowing a working medium to flow therein. The heat pipe includes an evaporation region inserted into the hermetically sealed space of the fuel cooling pipe so that a fuel passage is formed between the evaporation region and the inner circumferential surface of the fuel cooling pipe. The evaporation region evaporates the working medium by heat exchange with a fuel flowing through the fuel passage. The heat pipe also includes a condensation region for condensing the working medium evaporated at the evaporation region and an adiabatic region adiabatically connecting the evaporation region and the condensation region to each other. The condensation region is arranged outside of the fuel cooling pipe. The fuel cooling apparatus also has a fuel inlet port configured to introduce the fuel into the fuel passage of the fuel cooling pipe from the fuel pipe and a fuel outlet port configured to return the fuel that has flowed through the fuel passage in the fuel cooling pipe to the fuel pipe.

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First Claim