Numerical analysis on performance of two-phase vortex-tube

IF 6.4 2区工程技术 Q1 MECHANICS International Communications in Heat and Mass Transfer Pub Date : 2024-11-23 DOI:10.1016/j.icheatmasstransfer.2024.108373

Zhong Zhou , Yuze Han , Lijuan He , Zhi Li , Lifang Wang , Jianzi Yang , Yunfeng Liu

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Abstract

R41 gas and R1234yf droplets are used in the study as working fluids. Three-dimensional computational fluid dynamics is utilized to investigate the behavior of fluids in single-phase and two-phase vortex tubes, as well as the influence of cold flow fraction on the performance of them. The results show that small addition of droplets does not change the special working mechanism of the vortex tube. Two-phase vortex tubes are effective devices that can separate high pressure flow into cold flow and hot flow. But temperature difference at both cold and hot ends in the case of two-phase vortex tube is less than that of single-phase vortex tube at the same cold flow fraction. The maximum cold temperature differences of the single-phase and two-phase vortex tubes are 11.97 K and 10.54 K respectively when μ = 0.3. A maximum hot temperature difference of 29.54 K is achieved in the single-phase vortex tube when μ = 0.9. In contrast, a two-phase vortex tube exhibits a maximum hot temperature difference of 17.11 K at μ = 0.8. Additionally, the peak refrigerating capacity of the single-phase and two-phase vortex tube are 40.47 W and 38.51 W at μ = 0.7.

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两相涡管性能的数值分析

研究使用 R41 气体和 R1234yf 液滴作为工作流体。利用三维计算流体动力学研究了流体在单相和两相涡流管中的行为，以及冷流分量对其性能的影响。结果表明，少量液滴的加入不会改变涡流管的特殊工作机制。两相涡流管是一种有效的装置，可以将高压流分为冷流和热流。但在相同冷流分量下，两相涡流管冷热两端的温差小于单相涡流管。当 μ = 0.3 时，单相涡流管和双相涡流管的最大冷温差分别为 11.97 K 和 10.54 K。当 μ = 0.9 时，单相涡流管的最大热温差为 29.54 K。相比之下，当 μ = 0.8 时，两相涡流管的最大热温差为 17.11 K。此外，在 μ = 0.7 时，单相涡流管和双相涡流管的峰值制冷能力分别为 40.47 W 和 38.51 W。

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来源期刊

International Communications in Heat and Mass Transfer 工程技术-力学

CiteScore

11.00

自引率

10.00%

发文量

648

审稿时长

32 days

期刊介绍： International Communications in Heat and Mass Transfer serves as a world forum for the rapid dissemination of new ideas, new measurement techniques, preliminary findings of ongoing investigations, discussions, and criticisms in the field of heat and mass transfer. Two types of manuscript will be considered for publication: communications (short reports of new work or discussions of work which has already been published) and summaries (abstracts of reports, theses or manuscripts which are too long for publication in full). Together with its companion publication, International Journal of Heat and Mass Transfer, with which it shares the same Board of Editors, this journal is read by research workers and engineers throughout the world.