Next Article in Journal
A Review of Low-Frequency Active Vibration Control of Seat Suspension Systems
Previous Article in Journal
Development of a Smart Cyber-Physical Manufacturing System in the Industry 4.0 Context
Open AccessArticle

Effect of the Inclination Angle on the Steady-State Heat Transfer Performance of a Thermosyphon

Key Laboratory of State Forestry and Grassland Administration on Forestry Equipment and Automation, School of Technology, Beijing Forestry University, Beijing 100083, China
*
Authors to whom correspondence should be addressed.
Appl. Sci. 2019, 9(16), 3324; https://doi.org/10.3390/app9163324
Received: 17 July 2019 / Revised: 2 August 2019 / Accepted: 9 August 2019 / Published: 13 August 2019
A two-phase closed thermosyphon is an efficient heat transfer element. The heat transfer process of this type of thermosyphon includes conduction and convective heat transfer accompanied by phase changes. Variations in the inclination angle of a thermosyphon affect the steady-state heat transfer performance of the device. Therefore, the inclination angle is an important factor affecting the performance of a thermosyphon. In this paper, an equation for the actual heating area variations with respect to the inclination angle is deduced, and a model for the areal thermal resistance of a thermosyphon is proposed by analyzing the main influence mechanisms of the inclination angle on the heat transfer process. The experimental results show that the areal thermal resistance, which accounts for the effect of the actual heating area, does not change with respect to the inclination angle and exhibits a linear relationship with the heat transfer rate. The thermal resistance equation is fit according to the experimental data when the inclination angle of the thermosyphon is vertically oriented (90°), and the predicted values of the thermosyphon’s thermal resistance are obtained when the thermosyphon is inclined. The deviations between the experimental data and predicted values are less than ±0.05. Therefore, the theoretical equation can accurately predict the thermosyphon’s thermal resistance at different inclination angles. View Full-Text
Keywords: thermosyphon; inclination angle; actual heating area; areal thermal resistance thermosyphon; inclination angle; actual heating area; areal thermal resistance
Show Figures

Figure 1

MDPI and ACS Style

Wu, Y.; Zhang, Z.; Li, W.; Xu, D. Effect of the Inclination Angle on the Steady-State Heat Transfer Performance of a Thermosyphon. Appl. Sci. 2019, 9, 3324.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map

1
Back to TopTop