带翅片管散热器的混合型冷却塔的热研究

IF 5.1 3区工程技术 Q2 ENERGY & FUELS

Thermal Science and Engineering Progress Pub Date : 2024-10-31 DOI:10.1016/j.tsep.2024.103023

I.N. Madyshev , V.V. Kharkov

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引用次数: 0

摘要

大容量、高效率地冷却循环水是现代工业企业的一项紧迫任务。我们开发了一种混合冷却塔来冷却循环水，循环水在内部管式散热器中流动，散热器表面不断被冷却剂浸湿。为强化传热过程，散热器管表面设有圆形翅片。本文介绍了带翅片散热器的混合冷却塔中循环水冷却过程的验证数学模型。评估了翅片材料和尺寸对混合冷却塔热特性的影响。结果发现，根据润湿液的平均温度，将鳍片材料改为铜可将热率和容量提高 65.5% 至 71.5%。研究表明，在相同条件下，通过使用高 3.5 毫米、间距为 2 毫米的铜鳍片，可以将混合冷却系统的热率和容量提高到散热器光滑管的 5 倍。据测定，选择合理的散热器管翅片尺寸可确保散热器壁的热阻几乎完全一致，从而提高混合冷却塔的热率和容量。

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Thermal study of hybrid-type cooling tower with finned tube radiator

High-capacity and efficient cooling of the circulating water is an urgent task for modern industrial enterprises. A hybrid cooling tower has been developed to cool the circulating water, which is cooled by flowing inside an internal tube radiator, the surface of which is constantly wetted with coolant. For intensifying heat transfer processes, the surface of the radiator tubes is provided with circular fins. The paper presents a validated mathematical model of the process of cooling the circulating water in the hybrid cooling tower with the finned radiator. The influence of the material and dimensions of the fins on the thermal characteristics of the hybrid cooling tower is evaluated. It was found that changing the fin material to copper can increase the heat rate and capacity by 65.5 to 71.5 %, depending on the average temperature of the wetting liquid. It was shown that by using copper fins 3.5 mm high and spaced at a pitch of 2 mm, it is possible to increase the heat rate and capacity of the hybrid cooling system up to 5 times compared to smooth tubes of the radiator under the same conditions. It was determined that the selection of rational fin dimensions of radiator tubes ensures almost complete alignment of the thermal resistances of the radiator walls, which can enhance the heat rate and capacity of the hybrid cooling tower.

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来源期刊

Thermal Science and Engineering Progress Chemical Engineering-Fluid Flow and Transfer Processes

CiteScore

7.20

自引率

10.40%

发文量

327

审稿时长

41 days

期刊介绍： Thermal Science and Engineering Progress (TSEP) publishes original, high-quality research articles that span activities ranging from fundamental scientific research and discussion of the more controversial thermodynamic theories, to developments in thermal engineering that are in many instances examples of the way scientists and engineers are addressing the challenges facing a growing population – smart cities and global warming – maximising thermodynamic efficiencies and minimising all heat losses. It is intended that these will be of current relevance and interest to industry, academia and other practitioners. It is evident that many specialised journals in thermal and, to some extent, in fluid disciplines tend to focus on topics that can be classified as fundamental in nature, or are ‘applied’ and near-market. Thermal Science and Engineering Progress will bridge the gap between these two areas, allowing authors to make an easy choice, should they or a journal editor feel that their papers are ‘out of scope’ when considering other journals. The range of topics covered by Thermal Science and Engineering Progress addresses the rapid rate of development being made in thermal transfer processes as they affect traditional fields, and important growth in the topical research areas of aerospace, thermal biological and medical systems, electronics and nano-technologies, renewable energy systems, food production (including agriculture), and the need to minimise man-made thermal impacts on climate change. Review articles on appropriate topics for TSEP are encouraged, although until TSEP is fully established, these will be limited in number. Before submitting such articles, please contact one of the Editors, or a member of the Editorial Advisory Board with an outline of your proposal and your expertise in the area of your review.