{"paper_id":"2619abc7-e1f8-49db-baba-dbcc0e8eff58","body_text":"Outlet of the Fan for Overcoming the Suction Limit of Fan Law | 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Article Outlet of the Fan for Overcoming the Suction Limit of Fan Law Chul Hwan Seul This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4749751/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 Ventilation systems are crucial for controlling the indoor air quality in closed spaces and mitigating health hazards. However, for a high suction performance, fan-based ventilation requires considerable energy consumption along with subsequent environmental and financial drawbacks. According to the theory of Dalla Valle, a universal law of physics that applies to fans, it is impossible to draw in more air than the unique output of a fan. However, this study introduces how a fan can suck in more than its unique output. the limitations of the Daercoming lla Valle physics. Our method combines the use of a bladeless fan in series with an axial fan to exploit airflow dynamic properties and increase the output efficiency. Our findings show that the proposed fan configuration provides a new foundation for developing improved ventilation systems to overcome the limitations of fan laws. Full Text Additional Declarations The authors declare no competing interests. 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-4749751\",\"acceptedTermsAndConditions\":true,\"allowDirectSubmit\":true,\"archivedVersions\":[],\"articleType\":\"Research Article\",\"associatedPublications\":[],\"authors\":[{\"id\":327689503,\"identity\":\"5b86b0d2-75fe-4451-943a-50a4c31e5f8d\",\"order_by\":0,\"name\":\"Chul Hwan Seul\",\"email\":\"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA3UlEQVRIie3POwrCQBCA4QmBTTNqu0ExVxgbQRDPshKIpW3Awg2BWHkGr2ClbWRRmxzAMjaxsRYC4gtbiWtnsV89PzMDYBh/iDlRlIsQWuDYqV5SRxVTngGCzYRe0uajxD0mrwRJ8zAYSi7YAL0YL3mZ9MfgqO2yOtlIEugjqdq6M0+CnsQgOFQmViSF4M+r7NqKY6YIOHarE9uSqaDp67DCvWZ3jeS9RiEoZE0MU40ErRhEun/+wrrNVugT+/aLtzidyvI2aXuzuHDPNKCGo3aVyYe9v40bhmEYnzwAdlNCYZpmGAMAAAAASUVORK5CYII=\",\"orcid\":\"\",\"institution\":\"Independent Researcher\",\"correspondingAuthor\":true,\"prefix\":\"\",\"firstName\":\"Chul\",\"middleName\":\"Hwan\",\"lastName\":\"Seul\",\"suffix\":\"\"}],\"badges\":[],\"createdAt\":\"2024-07-16 12:35:56\",\"currentVersionCode\":1,\"declarations\":{\"humanSubjects\":false,\"vertebrateSubjects\":false,\"conflictsOfInterestStatement\":false,\"humanSubjectEthicalGuidelines\":false,\"humanSubjectConsent\":false,\"humanSubjectClinicalTrial\":false,\"humanSubjectCaseReport\":false,\"vertebrateSubjectEthicalGuidelines\":false},\"doi\":\"10.21203/rs.3.rs-4749751/v1\",\"doiUrl\":\"https://doi.org/10.21203/rs.3.rs-4749751/v1\",\"draftVersion\":[],\"editorialEvents\":[],\"editorialNote\":\"\",\"failedWorkflow\":false,\"files\":[{\"id\":60502535,\"identity\":\"a8d67749-95e5-4d84-816f-1d59bebf0dbf\",\"added_by\":\"auto\",\"created_at\":\"2024-07-17 12:57:49\",\"extension\":\"pdf\",\"order_by\":1,\"title\":\"\",\"display\":\"\",\"copyAsset\":false,\"role\":\"manuscript-pdf\",\"size\":654374,\"visible\":true,\"origin\":\"\",\"legend\":\"\",\"description\":\"\",\"filename\":\"Manuscript1003.pdf\",\"url\":\"https://assets-eu.researchsquare.com/files/rs-4749751/v1_covered_8588703f-b8eb-46d5-bbdb-4e6c550f6059.pdf\"}],\"financialInterests\":\"The authors declare no competing interests.\",\"formattedTitle\":\"\\u003cp\\u003e\\u003cstrong\\u003eOutlet of the Fan for Overcoming the Suction Limit of Fan Law\\u003c/strong\\u003e\\u003c/p\\u003e\",\"fulltext\":[],\"fulltextSource\":\"\",\"fullText\":\"\",\"funders\":[],\"hasAdminPriorityOnWorkflow\":false,\"hasManuscriptDocX\":false,\"hasOptedInToPreprint\":true,\"hasPassedJournalQc\":\"\",\"hasAnyPriority\":true,\"hideJournal\":true,\"highlight\":\"\",\"institution\":\"\",\"isAcceptedByJournal\":false,\"isAuthorSuppliedPdf\":true,\"isDeskRejected\":\"\",\"isHiddenFromSearch\":false,\"isInQc\":false,\"isInWorkflow\":false,\"isPdf\":true,\"isPdfUpToDate\":true,\"isWithdrawnOrRetracted\":false,\"journal\":{\"display\":true,\"email\":\"info@researchsquare.com\",\"identity\":\"researchsquare\",\"isNatureJournal\":false,\"hasQc\":true,\"allowDirectSubmit\":true,\"externalIdentity\":\"\",\"sideBox\":\"\",\"snPcode\":\"\",\"submissionUrl\":\"/submission\",\"title\":\"Research Square\",\"twitterHandle\":\"researchsquare\",\"acdcEnabled\":true,\"dfaEnabled\":false,\"editorialSystem\":\"\",\"reportingPortfolio\":\"\",\"inReviewEnabled\":false,\"inReviewRevisionsEnabled\":true},\"keywords\":\"\",\"lastPublishedDoi\":\"10.21203/rs.3.rs-4749751/v1\",\"lastPublishedDoiUrl\":\"https://doi.org/10.21203/rs.3.rs-4749751/v1\",\"license\":{\"name\":\"CC BY 4.0\",\"url\":\"https://creativecommons.org/licenses/by/4.0/\"},\"manuscriptAbstract\":\"\\u003cp\\u003eVentilation systems are crucial for controlling the indoor air quality in closed spaces and mitigating health hazards. 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