Effect of working fluid temperature on energy dissipation characteristics of liquid ring vacuum pump

Li, Jinshi; Zhou, Fubao; Zhang, Yifan; Zhang, Di; Liu, Chun; Kang, Jianhong; Li, Ning; Pan, Shunlin

doi:10.1016/j.applthermaleng.2023.121469

Cited by 4 publications

(1 citation statement)

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“…There is little research available on the temperature of vortex pumps, both nationally and internationally, but research on the temperatures of other fluid machinery can provide us with a certain basis. Li Jinshi et al [18] studied the temperature of different working fluids in a circulating vacuum pump. It was found that the ratio of vaporization of the working fluid to convective heat transfer increased with increases in the inlet liquid temperature.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Different Working Fluid Temperatures on the Hydraulic Performance of Magnetic Vortex Pumps

Cheng,

Li,

et al. 2024

Water

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Magnetic vortex pumps are characterized by their high performance and zero leakage, and in recent years, they have been applied for the transportation of antifreeze coolant in varying-temperature environments. This paper combines Computational Fluid Dynamics (CFD) with experimental verification to study the external and internal flow characteristics of magnetic vortex pumps when transporting working fluid at different temperatures, considering radial clearance flow. The results indicate that as the temperature of the medium increases, both the pump head and efficiency improve. Specifically, under the design flow rate condition, the pump head increases by 16.7% when transporting a medium at 90 °C compared to ambient-temperature conditions. Conversely, the pump head is only 16.8% of that observed under ambient-temperature conditions when transporting a medium at −30 °C. Analysis of the internal flow field reveals that the changes in pump hydraulic performance at different working fluid temperatures are primarily due to variations in the vorticity of the internal flow field.

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Section: Introductionmentioning

confidence: 99%