Thermal Stress Accommodation in Sodium/Inconel 718 Heat Pipes

Thermal Stress Accommodation in Sodium/Inconel 718 Heat Pipes | 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 Thermal Stress Accommodation in Sodium/Inconel 718 Heat Pipes Longfei Hu, Bo LI, Xiaoguang Luo, Siyuan Chen, Jijun Yu, Bangcheng Ai, and 1 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4062076/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, sodium/Inconel 718 heat pipes with and without topological capillary were designed and fabricated in China Academy of Aerospace Aerodynamics. Then their startup properties were investigated systematically. It was found that startup temperature of sodium/Inconel 718 heat pipes was 420 o C. During startup tests, all the heat pipes startup successfully. Topological capillary did not affect startup properties of sodium/Inconel 718 heat pipes. After tests, all the heat pipes still kept their integrity. Thermal deformation was not observed. A further thermal stress simulation indicated that topological capillary could accommodate thermal stresses in sodium/Inconel 718 heat pipes. With topological capillary addition, thermal stresses in the heat pipes decreased by about 21%. Moreover, the bended sodium/Inconel 718 heat pipe could startup successfully in an anti-gravity condition, being instructive for development of flexible and anti-gravity high temperature heat pipes. Sodium Inconel 718 alloy Heat pipe Startup Thermal stress 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-4062076","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":278610492,"identity":"851eb31c-49c7-47fb-867c-980fe87c4a20","order_by":0,"name":"Longfei Hu","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA1klEQVRIie3PMQuCQBTA8ZPgXJ66PiHsKyiC2MeRwOncHUIEwSmahb5EEDQLki1+gAOb+gRB0BTR6SxqW8P9t4P3494jRCb7w/RFQ8jDRjCwf+NyklDKiFLEvmUWREkFgVlkAU3s2rwnZA7RatRyDE5tdr3zrQ9ErS7HcaKHaApyvtVBxmqxGIQhHyWrnYdORzhzMkYFQfDGCQUPg26xoiOfuaRs0LVRkCifR9x1GqOFPAwO0R6BTt1iUHDat52AUWzKJ3sllqFW9SgZ+Pe3cZlMJpMN9QW48T9DxxmA2QAAAABJRU5ErkJggg==","orcid":"","institution":"China Academy of Aerospace Aerodynamics","correspondingAuthor":true,"prefix":"","firstName":"Longfei","middleName":"","lastName":"Hu","suffix":""},{"id":278610493,"identity":"543914f0-ead9-4d11-bed0-19f73972b595","order_by":1,"name":"Bo LI","email":"","orcid":"","institution":"China Academy of Aerospace Aerodynamics","correspondingAuthor":false,"prefix":"","firstName":"Bo","middleName":"","lastName":"LI","suffix":""},{"id":278610494,"identity":"69f33820-023d-4fe8-9e48-45e069089a0e","order_by":2,"name":"Xiaoguang Luo","email":"","orcid":"","institution":"China Academy of Aerospace Aerodynamics","correspondingAuthor":false,"prefix":"","firstName":"Xiaoguang","middleName":"","lastName":"Luo","suffix":""},{"id":278610495,"identity":"ba2f8834-4e31-4e02-9350-573ac57cda48","order_by":3,"name":"Siyuan Chen","email":"","orcid":"","institution":"China Academy of Aerospace Aerodynamics","correspondingAuthor":false,"prefix":"","firstName":"Siyuan","middleName":"","lastName":"Chen","suffix":""},{"id":278610496,"identity":"5f3b5542-0775-47ef-badd-6645b534318e","order_by":4,"name":"Jijun Yu","email":"","orcid":"","institution":"China Academy of Aerospace Aerodynamics","correspondingAuthor":false,"prefix":"","firstName":"Jijun","middleName":"","lastName":"Yu","suffix":""},{"id":278610497,"identity":"91cf38b6-3a2f-46e5-81af-2e6384aab182","order_by":5,"name":"Bangcheng Ai","email":"","orcid":"","institution":"China Academy of Aerospace Aerodynamics","correspondingAuthor":false,"prefix":"","firstName":"Bangcheng","middleName":"","lastName":"Ai","suffix":""},{"id":278610498,"identity":"45c213c7-7f49-42d1-8568-e7ceb676cffc","order_by":6,"name":"Mohan Zhang","email":"","orcid":"","institution":"Jiangsu Vilory Advanced Materials Technology Co. Ltd","correspondingAuthor":false,"prefix":"","firstName":"Mohan","middleName":"","lastName":"Zhang","suffix":""}],"badges":[],"createdAt":"2024-03-10 05:44:32","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-4062076/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-4062076/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":54711356,"identity":"1cdee4ec-ea3c-4ccc-967c-bf3a66848ad2","added_by":"auto","created_at":"2024-04-15 14:46:32","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":918564,"visible":true,"origin":"","legend":"","description":"","filename":"Themanuscript.pdf","url":"https://assets-eu.researchsquare.com/files/rs-4062076/v1_covered_868b91f9-e71f-44a2-9be7-7f8f0070470d.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Thermal Stress Accommodation in Sodium/Inconel 718 Heat Pipes","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"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":"[email protected]","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":"Sodium, Inconel 718 alloy, Heat pipe, Startup, Thermal stress","lastPublishedDoi":"10.21203/rs.3.rs-4062076/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-4062076/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eIn this study, sodium/Inconel 718 heat pipes with and without topological capillary were designed and fabricated in China Academy of Aerospace Aerodynamics. Then their startup properties were investigated systematically. It was found that startup temperature of sodium/Inconel 718 heat pipes was 420\u003csup\u003eo\u003c/sup\u003eC. During startup tests, all the heat pipes startup successfully. Topological capillary did not affect startup properties of sodium/Inconel 718 heat pipes. After tests, all the heat pipes still kept their integrity. Thermal deformation was not observed. A further thermal stress simulation indicated that topological capillary could accommodate thermal stresses in sodium/Inconel 718 heat pipes. With topological capillary addition, thermal stresses in the heat pipes decreased by about 21%. Moreover, the bended sodium/Inconel 718 heat pipe could startup successfully in an anti-gravity condition, being instructive for development of flexible and anti-gravity high temperature heat pipes.\u003c/p\u003e","manuscriptTitle":"Thermal Stress Accommodation in Sodium/Inconel 718 Heat Pipes","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2024-03-14 15:39:01","doi":"10.21203/rs.3.rs-4062076/v1","editorialEvents":[{"type":"communityComments","content":0}],"status":"published","journal":{"display":true,"email":"[email protected]","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}}],"origin":"","ownerIdentity":"50072712-697e-48b1-9043-dbf3ec117aba","owner":[],"postedDate":"March 14th, 2024","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"posted","subjectAreas":[],"tags":[],"updatedAt":"2024-04-15T14:38:24+00:00","versionOfRecord":[],"versionCreatedAt":"2024-03-14 15:39:01","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-4062076","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-4062076","identity":"rs-4062076","version":["v1"]},"buildId":"qtupq5eGEP_6zYnWcrvyt","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}