Abstract

The relative effects of the use of hydrogen are presented for the secondary heat exchanger, the transfer piping, and the air radiator. In general, by a change in the configuration of the component parts. it is possible when using hydrogen to reduce weights to values comparable with those required for the liquid alkali metals. Gas pressures musi be in the order of several thousand psi and pumping powers used which are several times those for the liquid alkali metals. Similarly, by using larger parts whose weights are several times those required for the alkali liquid metals. the pumping horsepowers may be reduced to values similar to those for the liquid alkali metals. Hydrogen at pressures of 1,000 psi is superior from the weight-pumping power requirements to the heavy liquid metals such as lead-bismuth. When weight is not a prime consideration. hydrogen shows considerable promise as a secondary heat transfer fluid. (auth)

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