Heat transport capacity of an axial-rotating single- loop oscillating heat pipe for abrasive-milling tools

Ning Qian, Yucan Fu, Marco Marengo, Jiuhua Xu, Jiajia Chen, Fan Jiang

Research output: Contribution to journalArticle

Abstract

In order to enhance heat transfer in the abrasive-milling processes to reduce thermal damage, the concept of employing oscillating heat pipes (OHPs) in an abrasive-milling tool is proposed. A single-loop OHP (SLOHP) is positioned on the plane parallel to the rotational axis of the tool. In this case, centrifugal accelerations do not segregate the fluid between the evaporator and condenser. The experimental investigation is conducted to study the effects of centrifugal acceleration (0-738 m/s2), heat flux (9100-31,850 W/m2) and working fluids (methanol, acetone and water) on the thermal performance. Results show that the centrifugal acceleration has a positive influence on the thermal performance of the axial-rotating SLOHP when filled with acetone or methanol. As for water, with the increase of centrifugal acceleration, the heat transfer performance first increases and then decreases. The thermal performance enhances for higher heat flux rises for all the fluids. The flow inside the axial-rotating SLOHP is analyzed by a slow-motion visualization supported by the theoretical analysis. Based on the theoretical analysis, the rotation will increase the resistance for the vapor to penetrate through the liquid slugs to form an annular flow, which is verified by the visualization.

Original languageEnglish
Article number2145
JournalEnergies
Volume13
Issue number9
DOIs
Publication statusPublished - 30 Apr 2020

Bibliographical note

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Keywords

  • Abrasive-milling processes
  • Heat transfer
  • Milling cooling
  • Oscillating heat pipes

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