Abstract:
This work presents experimental results for the onset of boiling of forced flow of nitrogen in channels. Experimental data corresponds to the following conditions: pressure $p = (0.9$–$18.1) \times 10^5$ Pa, velocity of circulation $w_0 = 0.1$–$1.32$ m/s. Circular straight channels with inner diameters of $d = 3.87$–$18.9$ mm made of stainless steel $(\rm Cr\,18\%$, $\rm Ni\,10\%$, $\rm Mn\,1.5\%)$ were used as test specimens. The influence of pressure and velocity of circulation on temperature difference on wall $\Delta T_{\text{ob}} = (T_w - T_{\text{sat}})$ corresponding to onset of boiling of liquid was investigated. Simple correlation of calculating for $\Delta T_{\text{ob}}$ was suggested for forced flow of cryogenic liquid in heated channel.
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