Visualization of Two-Phase Flows in Nanofluid Oscillating Heat Pipes

Author:

Li Qi-Ming1,Zou Jiang1,Yang Zhen1,Duan Yuan-Yuan1,Wang Bu-Xuan1

Affiliation:

1. Laboratory of Phase Change and Interfacial Transport Phenomena, Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Tsinghua University, Beijing 100084, China

Abstract

Two-phase flows in an oscillating heat pipe (OHP) charged with deionized (DI) water and a nanofluid (0.268% v/v) were experimentally investigated. The OHP was made of quartz glass tube (with an inner diameter of 3.53 mm and an outer diameter of 5.38 mm) and coated with a transparent heating film in its evaporating section. The internal two-phase flows at different heat loads were recorded by a charge-coupled device (CCD) camera. Only column flow was observed in the DI water OHP while in the nanofluid OHP the flow first was column, then slug and annular flows as the heat load was steadily increased. Heat transfer in the OHP was strongly related to the two-phase regime. The flow regime transitions effectively increased the operating allowable heat loads in the nanofluid OHP two- to threefold relative to the DI water OHP. The nanofluid OHP had a much lower thermal resistance than the DI water OHP with the most effective heat transfer in the nanofluid OHP occurring in the slug flow regime.

Publisher

ASME International

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Reference44 articles.

1. An Insight Into Thermo-Hydrodynamic Coupling in Closed-Loop Pulsating Heat Pipes;Khandekar;Int. J. Therm. Sci.

2. Oscillation Motions in an Oscillating Heat Pipe;Liang;Int. Commun. Heat Mass Transfer

3. An Investigation of Oscillating Motions in a Miniature Pulsating Heat Pipe;Ma;Microfluid. Nanofluid.

4. Heat Transport Capability in an Oscillating Heat Pipe;Ma;ASME J. Heat Transfer

5. Heat Transport Capability and Fluid Flow Neutron Radiography of Three-Dimensional Oscillating Heat Pipes;Borgmeyer;ASME J. Heat Transfer

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