{"title":"Numerical exploration of heat transfer and friction factor in corrugated dual-pipe heat exchangers using SiO2 and CuO nanofluids","authors":"Prem Kumar Chaurasiya , Jatoth Heeraman , Anoop Pratap Singh , K. Sudha Madhuri , Vinod Kumar Sharma","doi":"10.1016/j.tsep.2024.103076","DOIUrl":null,"url":null,"abstract":"<div><div>Numerical simulations are conducted to explore influence of corrugation on internal tube surfaces of the double pipe heat exchanger (DPHE). The study comparing the performance of liquid water, SiO<sub>2</sub> (Silicon dioxide) and CuO (Copper oxide) as working fluids, with CuO showing promising outcomes. The configuration employed for investigation are inner tube corrugated externally (ECIT) and inner tube corrugated internally (ICIT), at helix angles (α) of 15°, 20°, and 25° is analysed using k-ε turbulence model within a Reynolds number (Re) range of 4000 to 20,000 under constant temperature conditions along the tube wall. Insights is gained from numerical simulations on heat transfer coefficient, pressure drop, frictional loss, and heat transfer rate [HTR]. The results revealed that ECIT outperformed ICIT, particularly at α = 15°, with higher performance evaluation criteria (PEC). This investigation provides valuable insights for optimizing heat exchanger design and operation by emphasizing the importance of corrugations for improved efficiency in industrial heat transfer processes. This study reveals that using CuO nanofluid in corrugated double pipe heat exchangers significantly enhances heat transfer performance, with a maximum Nusselt number increase of up to 35 %, while maintaining superior friction factors and performance evaluation criteria (PEC) values ranging from 0.89 to 2.09 at varying Reynolds numbers.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"56 ","pages":"Article 103076"},"PeriodicalIF":5.1000,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Thermal Science and Engineering Progress","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2451904924006942","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
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Abstract
Numerical simulations are conducted to explore influence of corrugation on internal tube surfaces of the double pipe heat exchanger (DPHE). The study comparing the performance of liquid water, SiO2 (Silicon dioxide) and CuO (Copper oxide) as working fluids, with CuO showing promising outcomes. The configuration employed for investigation are inner tube corrugated externally (ECIT) and inner tube corrugated internally (ICIT), at helix angles (α) of 15°, 20°, and 25° is analysed using k-ε turbulence model within a Reynolds number (Re) range of 4000 to 20,000 under constant temperature conditions along the tube wall. Insights is gained from numerical simulations on heat transfer coefficient, pressure drop, frictional loss, and heat transfer rate [HTR]. The results revealed that ECIT outperformed ICIT, particularly at α = 15°, with higher performance evaluation criteria (PEC). This investigation provides valuable insights for optimizing heat exchanger design and operation by emphasizing the importance of corrugations for improved efficiency in industrial heat transfer processes. This study reveals that using CuO nanofluid in corrugated double pipe heat exchangers significantly enhances heat transfer performance, with a maximum Nusselt number increase of up to 35 %, while maintaining superior friction factors and performance evaluation criteria (PEC) values ranging from 0.89 to 2.09 at varying Reynolds numbers.
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.
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