Доступ предоставлен для: Guest
Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
Heat Pipe Science and Technology, An International Journal

ISSN Печать: 2151-7975
ISSN Онлайн: 2151-7991

Archives: Volume 1, 2010 to Volume 8, 2017

Heat Pipe Science and Technology, An International Journal

DOI: 10.1615/HeatPipeScieTech.2015013430
pages 65-76

EXPERIMENTAL STUDY ON PULSATING HEAT PIPE USING SELF-REWETTING FLUID AS A WORKING FLUID: VISUALIZATION OF THIN LIQUID FILM AND SURFACE WAVE

Koji Fumoto
Department of Intelligent Machines and Engineering, Hirosaki University, 3 Bunkyo-cho Hirosaki, 0368561, Japan
Takuya Ishida
Department of Intelligent Machines and Engineering, Hirosaki University, 3 Bunkyo-cho Hirosaki, 0368561, Japan
Tsuyoshi Kawanami
Department of Mechanical, Engineering, Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe, 6578501, Japan
Takao Inamura
Graduate School of Science and Technology, Hirosaki University, Japan

Краткое описание

Pulsating heat pipes (PHPs) are a new type of efficient heat transfer for small devices, which were introduced in the mid-1990s by H. Akachi. PHPs can be used to cool electronics by eliminating high heat flux. In this study, flow visualization was conducted for an open-loop PHP using a high-speed camera. The PHP was composed of a glass tube with an internal diameter of 1.8 mm, heated by an electric heater and cooled by water at a constant temperature. The evaporator had 10 rotations and 20 channels. The working fluid employed was comprised of a self-rewetting fluid, water, and ethanol. The self-rewetting fluid was a dilute aqueous solution of alcohols with a large number of carbon atoms (such as butanol and pentanol). These solutions can be considered as self-rewetting fluids because such fluids display nonlinear dependence of the surface tension with temperature. The results indicated that the working fluid characteristics had a strong influence on the performance. When using self-rewetting fluid as the working fluid, the temperature of the adiabatic section was higher than that of the water. Moreover, a peculiar wavy, thin layer of water was observed on the wall of the channel.


Articles with similar content:

NANOPARTICLE DEPOSITION ON ROUGHENED COPPER SURFACES VIA NANOFLUID POOL BOILING
International Heat Transfer Conference 16, Vol.4, 2018, issue
Simone Mancin, Luca Doretti, Taylor P. Allred, Claudio Zilio, Giovanni Antonio Longo, Justin A. Weibel, Giulia Righetti
A FEASIBILITY STUDY OF APPLYING PULSATING HEAT PIPE IN HEAT SINK
Journal of Enhanced Heat Transfer, Vol.18, 2011, issue 6
Xianyong Zeng, Zirong Lin, Shuangfeng Wang, Eton Lee, Winston Zhang, Yong Tang
Experimental Study on the Pool and Flow Boiling Heat Transfer Enhancement for Silicon Chips with Microstructured Surfaces
Second Thermal and Fluids Engineering Conference, Vol.30, 2017, issue
Yonghai Zhang, Jin-Jia Wei, Yongchen Liu
EFFECTS OF CROSS-SECTION GEOMETRY ON THE THERMAL PERFORMANCE OF A PULSATING HEAT PIPE
First Thermal and Fluids Engineering Summer Conference, Vol.15, 2015, issue
Sungwan Park, Jungseok Lee, Sung Jin Kim
EXPERIMENTAL INVESTIGATION OF THE THERMAL PERFORMANCE OF MESH WICK HEAT PIPE
Heat Transfer Research, Vol.49, 2018, issue 18
Subrata Kumar Ghosh, Arun Kumar Tiwari, Naveen Gupta