The boiling suppression of liquid nitrogen

Details The boiling suppression of liquid nitrogen The boiling suppression of liquid nitrogen

2008-09-25

arxiv.org/abs/0809.4346v2

Cryogenics 49, 221 (2009).

Physics

Condensed Matter

Other Condensed Matter

14 pages, 7 figures

Scientific paper

When He gas is injected from room temperature into boiling liquid N$_{2}$, boiling is suppressed, leaving liquid surface flat like a mirror. Although the qualitative explanation for this phenomenon is known [Minkoff G J \textit{et al}. Nature 1957;180(4599):1413-4.], it has not been studied quantitatively and comprehensively yet. In this report, we made careful simultaneous measurements of temperature and weight variation of the liquid. The results clearly indicate that the boiling suppression is caused by cooling of the liquid with "internal evaporation" of N$_{2}$ into the He bubbles.

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