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Experimental study of linear heat pipes thermal characteristics under the external vibrations effect

DOI: 10.17586/1606‑4313‑2020‑19‑3-27-38
UDC 621.9 : 536.24.08 : 534.11

Experimental study of linear heat pipes thermal characteristics under the external vibrations effect

Seryakov A. V., Alexander V. Konkin, Alekseev Andrey P.

For citation: Seryakov A. V., Konkin A. V., Alekseev A. P. Experimental study of linear heat pipes thermal characteristics under the external vibrations effect. Vestnik Mezhdunarodnoi akademii kholoda. 2020. No 3. p. 27–38.

Abstract
An experimental study of the longitudinal external vibrations effect on the value of heat transfer characteristics of heat pipes (HP’s) with a confusor-diffusor profile of the vapour channel and a large amount of working fluid in the pores of the capillary-porous inner insert was conducted. At high temperature head on the HP’s capillary-porous evaporator, connected to the insert by contact welding, vapour formation becomes non-stationary. From the measurements results, it follows that when external longitudinal harmonic vibrations with a limited amplitude and a frequency equal to the frequency of internal nonstationarity occur in the HP, the transport characteristics show a resonant character. The increase in the heat transfer coefficient is due to the intensification of the vapour bubbles growth in the capillary-porous evaporator when external vibrations are applied.

Keywords: heat pipes internal pulsations, external vibrations, resonance, heat transfer coefficient.

All references

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