{"title":"Experimental Study on Heat Transfer Characteristics of Thermosyphon with Methanol-Based Binary Working Fluid","authors":"","doi":"10.1007/s40997-023-00738-7","DOIUrl":null,"url":null,"abstract":"<h3>Abstract</h3> <p>Compared with the single working fluid, the binary mixture working fluid can further extend the operating temperature range and enhance the heat transfer performance of a thermosyphon. In this paper, an experimental test system was designed and implemented to study the heat transfer characteristics of the thermosyphon. Methanol employed as the base fluid, 10 kinds of binary mixtures were prepared by adding different volume fractions of deionized water and ethanol separately. The effects of filling ratio, heat flux, and working fluid type on the heat transfer characteristics of the thermosyphon were analyzed and discussed. Moreover, the start-up characteristics were also explored. The experimental result shows that the filling ratio has a significant impact on the performance of the thermosyphon, and the optimal filling ratio is about 30% in this study. The start-up times of the thermosyphon with different binary mixture working fluids remain consistently, which are in the range of 200–300 s. It is worth mentioning that the start-up time of methanol-based binary mixture working fluid with 5% DW is 200 s, which is nearly 33% earlier than that with 50% ethanol. The thermosyphon with methanol-based binary mixture working fluid containing 5% DW presents a reduction of 7.3 °C in the maximum temperature difference and a remarkable 57.0% decrease in thermal resistance when contrasted with the thermosyphon using methanol working fluid. The results of this paper have important significance for the practical application of methanol-based binary mixture working fluid.</p>","PeriodicalId":49063,"journal":{"name":"Iranian Journal of Science and Technology-Transactions of Mechanical Engineering","volume":null,"pages":null},"PeriodicalIF":1.5000,"publicationDate":"2023-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Iranian Journal of Science and Technology-Transactions of Mechanical Engineering","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1007/s40997-023-00738-7","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, MECHANICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Compared with the single working fluid, the binary mixture working fluid can further extend the operating temperature range and enhance the heat transfer performance of a thermosyphon. In this paper, an experimental test system was designed and implemented to study the heat transfer characteristics of the thermosyphon. Methanol employed as the base fluid, 10 kinds of binary mixtures were prepared by adding different volume fractions of deionized water and ethanol separately. The effects of filling ratio, heat flux, and working fluid type on the heat transfer characteristics of the thermosyphon were analyzed and discussed. Moreover, the start-up characteristics were also explored. The experimental result shows that the filling ratio has a significant impact on the performance of the thermosyphon, and the optimal filling ratio is about 30% in this study. The start-up times of the thermosyphon with different binary mixture working fluids remain consistently, which are in the range of 200–300 s. It is worth mentioning that the start-up time of methanol-based binary mixture working fluid with 5% DW is 200 s, which is nearly 33% earlier than that with 50% ethanol. The thermosyphon with methanol-based binary mixture working fluid containing 5% DW presents a reduction of 7.3 °C in the maximum temperature difference and a remarkable 57.0% decrease in thermal resistance when contrasted with the thermosyphon using methanol working fluid. The results of this paper have important significance for the practical application of methanol-based binary mixture working fluid.
期刊介绍：
Transactions of Mechanical Engineering is to foster the growth of scientific research in all branches of mechanical engineering and its related grounds and to provide a medium by means of which the fruits of these researches may be brought to the attentionof the world’s scientific communities. The journal has the focus on the frontier topics in the theoretical, mathematical, numerical, experimental and scientific developments in mechanical engineering as well
as applications of established techniques to new domains in various mechanical engineering disciplines such as: Solid Mechanics, Kinematics, Dynamics Vibration and Control, Fluids Mechanics, Thermodynamics and Heat Transfer, Energy and Environment, Computational Mechanics, Bio Micro and Nano Mechanics and Design and Materials Engineering & Manufacturing.
The editors will welcome papers from all professors and researchers from universities, research centers,
organizations, companies and industries from all over the world in the hope that this will advance the scientific standards of the journal and provide a channel of communication between Iranian Scholars and their colleague in other parts of the world.
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