Enhancing the performance of earth to air heat exchanger using annular and perforated fins ; numerical and experimental study

Enhancing the performance of earth to air heat exchanger using annular and perforated fins ; numerical and experimental study | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Enhancing the performance of earth to air heat exchanger using annular and perforated fins ; numerical and experimental study Eman A. Hummood, Mushtaq Hasan This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-3943996/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract In this study, a thorough investigation was conducted on an air-to-ground heat exchanger system designed for cooling of air compression equipments in oil pipe line system south of Iraq. The research involved numerical and experimental simulations for comparing non-finned tubes with finned tubes of various shapes, such as annular fin tubes, circular perforated annular fin tubes, and square perforated annular fin tubes. The system, utilizing a 1.5-meter-long, 6-inch-diameter PVC pipe buried approximately 3.5 meters deep in the ground, demonstrated effective cooling during summer and warmth in winter in Nasiriyah, southern Iraq, where the ground temperature remains relatively constant at around 30 degrees Celsius at a depth of 3 meters throughout the year. Practical experiments conducted from July to August 2023 revealed that, despite high inlet temperatures, annularly finned tubes exhibited superior heat transfer rates and higher pressure drops in both theoretical simulations and practical experiments compared to non-finned tubes. The consistent low outlet temperatures contributed to efficient system cooling. Theoretical simulations also indicated that finned tubes, particularly those in annular shapes, outperformed non-finned tubes in terms of heat transfer rates. The annularly finned tube demonstrated the most effective cooling performance despite challenging external conditions, generating the highest pressure drop among various fin shapes and non-finned tubes. Furthermore, the system showcased energy efficiency by consuming less electrical energy, emphasizing its effectiveness in providing cooling under demanding environmental circumstances. EAHE system with finned and without finned tubes numerical investigation CFD expermantel investigation thermal of performance parameters. Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-3943996","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":272972570,"identity":"ec699a06-5b71-4f53-bebd-e81857c39899","order_by":0,"name":"Eman A. 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