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Performance Evaluation of Small-channel Pulsating Heat Pipe Based on Dimensional Analysis and ANN Model

Xuehui Wang1, Edward Wright1, Zeyu Liu1, Neng Gao2,*, Ying Li3

1 Fluids and Thermal Engineering Research Group, Faculty of Engineering, University of Nottingham, Nottingham, NG7 2RD, UK
2 Ningbo Tech University, Ningbo, 315100, China
3 Research Centre for Fluids and Thermal Engineering, University of Nottingham Ningbo China, Ningbo, 315100, China

* Corresponding Author: Neng Gao. Email: email

(This article belongs to this Special Issue: Micro-nano scale heat transfer enhancement technology)

Energy Engineering 2022, 119(2), 801-814.


The pulsating heat pipe is a very promising heat dissipation device to address the challenge of higher heat-flux electronic chips, as it is characterised by excellent heat transfer ability and flexibility for miniaturisation. To boost the application of PHP, reliable heat transfer performance evaluation models are especially important. In this paper, a heat transfer correlation was firstly proposed for closed PHP with various working fluids (water, ethanol, methanol, R123, acetone) based on collected experimental data. Dimensional analysis was used to group the parameters. It was shown that the average absolute deviation (AAD) and correlation coefficient (r) of the correlation were 40.67% and 0.7556, respectively. For 95% of the data, the prediction of thermal resistance and the temperature difference between evaporation and condensation section fell within 1.13 K/W and 40.76 K, respectively. Meanwhile, an artificial neural network model was also proposed. The ANN model showed a better prediction accuracy with a mean square error (MSE) and correlation coefficient (r) of 7.88e-7 and 0.9821, respectively.


Cite This Article

Wang, X., Wright, E., Liu, Z., Gao, N., Li, Y. (2022). Performance Evaluation of Small-channel Pulsating Heat Pipe Based on Dimensional Analysis and ANN Model. Energy Engineering, 119(2), 801–814.

cc This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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