Experimental and predictive study on pressure drop of subcooled flow boiling in a mini-channel

被引：0

作者：

Zheng S. ^{[1
]}

Guo P. ^{[1
]}

Yan J. ^{[1
]}

Wang S. ^{[1
]}

Li W. ^{[1
]}

Zhou Q. ^{[1
]}

机构：

[1] State Key Laboratory of Eco-hydraulics in Northwest Arid Region, Xi’an University of Technology, Shaanxi, Xi’an

来源：

Huagong Xuebao/CIESC Journal | 2023年 / 74卷 / 04期

关键词：

convection; extreme learning machine; flow resistance; genetic algorithm; mini-channel; subcooled boiling; two-phase flow;

D O I：

10.11949/0438-1157.20221317

中图分类号：

学科分类号：

摘要：

The pressure drop characteristics of subcooled water flow boiling in a mini-tube (1 mm) were experimentally investigated. The experimental parameters were as follows: heat flux 4.0—5.6 MW/m2, pressure 3.0—5.0 MPa, mass flow rate 2000—4200 kg/(m2‧s), and inlet thermodynamic quality -0.50—-0.10. The effects of mass flow rate, pressure, heat flux and other parameters on the subcooling boiling resistance were obtained, and the prediction method was focused on. Comparison of the experimental data with typical pressure drop correlations indicates that the accuracy of the prediction for most pressure drop correlations is not sufficient due to special factors such as high heat flux and micro-channels. In order to predict the pressure drop of subcooled boiling of high heat flux more accurately, the extreme learning machine model optimized by genetic algorithm (GA-ELM) is established based on LeakyReLU function. The prediction accuracy of GA-ELM is better than the traditional correlations (the average absolute error is 2.0%), with well generalization ability. This study will support design optimization of micro/mini-scale flow heat transfer systems. © 2023 Chemical Industry Press. All rights reserved.

引用

页码：1549 / 1560

页数：11

共 36 条

[1] Devahdhanush V S, Mudawar I, Nahra H K, Et al., Experimental heat transfer results and flow visualization of vertical upflow boiling in earth gravity with subcooled inlet conditions—in preparation for experiments onboard the International Space Station, International Journal of Heat and Mass Transfer, 188, (2022)
[2] Mudawar I., Assessment of high-heat-flux thermal management schemes, IEEE Transactions on Components and Packaging Technologies, 24, 2, pp. 122-141, (2001)
[3] Ongena J, Ogawa Y., Nuclear fusion: status report and future prospects, Energy Policy, 96, pp. 770-778, (2016)
[4] Yan J G, Bi Q C, Zhu G, Et al., Critical heat flux of highly subcooled water flow boiling in circular tubes with and without internal twisted tapes under high mass fluxes, International Journal of Heat and Mass Transfer, 95, pp. 606-619, (2016)
[5] Fang X D, Yuan Y L, Xu A Y, Et al., Review of correlations for subcooled flow boiling heat transfer and assessment of their applicability to water, Fusion Engineering and Design, 122, pp. 52-63, (2017)
[6] Parizad Benam B, Sadaghiani A K, Yagci V, Et al., Review on high heat flux flow boiling of refrigerants and water for electronics cooling, International Journal of Heat and Mass Transfer, 180, (2021)
[7] Deng D X, Zeng L, Sun W., A review on flow boiling enhancement and fabrication of enhanced microchannels of microchannel heat sinks, International Journal of Heat and Mass Transfer, 175, (2021)
[8] Gugliermetti L, Caruso G, Saraceno L., Prediction of subcooled flow boiling pressure drops in small circular tubes, International Journal of Heat and Mass Transfer, 115, pp. 1074-1090, (2017)
[9] Yang K, Yan C Q, Cao X X., Subcooled flow boiling resistance characteristics in narrow rectangular channel under natural circulation condition, CIESC Journal, 71, 7, pp. 3060-3070, (2020)
[10] Sharifi S, Aligoodarz M R, Rahbari A., Thermohydraulic performance of Al<sub>2</sub>O<sub>3</sub>-water nanofluid during single-phase flow and two-phase subcooled flow boiling, International Journal of Thermal Sciences, 179, (2022)

← 1 2 3 4 →