United States Government Publishing Office publisher pbl distributor dst United States Commerce Department National Institute of Standards and Technology (NIST) author aut Government Organization Kedzierski, Mark A. author aut text government publication eng GOVPUB Executive Agency Publications executive 2023-10-27 Commerce Department 2022-06-03 monographic deposited born digital 43 digital object pages C 13. https://www.govinfo.gov/app/details/GOVPUB-C13-39538e724f0b5f033b2a0ff965964295 P0b002ee1c1bb3ef2 on1389890421 (OCoLC)1389890421 DGPO 2023-10-27 2026-06-27 GOVPUB-C13-39538e724f0b5f033b2a0ff965964295 machine generated eng fdlp C13 GOVPUB-C13-39538e724f0b5f033b2a0ff965964295 39538e724f0b5f033b2a0ff965964295 GOVPUB NIST Technical Notes NOTE: THE “DATE ISSUED” ABOVE MAY DEFAULT TO JANUARY 1ST OF A GIVEN YEAR. TO THE VIEW THE MOST ACCURATE DATE OF ISSUE, REVIEW THE TITLE PAGE OF THE PUBLICATION. Studies or reports which are complete in themselves but restrictive in their treatment of a subject. Analogous to monographs but not so comprehensive in scope or definitive in treatment of the subject area. Often serve as a vehicle for final reports of work performed at NIST under the sponsorship of other government agencies. National Institute of Standards and Technology Commerce Department. National Institute of Standards and Technology. 2022 2022-06-03 https://www.govinfo.gov/app/details/GOVPUB-C13-39538e724f0b5f033b2a0ff965964295 https://www.govinfo.gov/content/pkg/GOVPUB-C13-39538e724f0b5f033b2a0ff965964295/pdf/GOVPUB-C13-39538e724f0b5f033b2a0ff965964295.pdf Boiling Enhanced heat transfer Low-GWP Micro-fin Refrigerant mixtures Refrigerants Kedzierski, Mark A. creator Kedzierski, Mark A. Lin, Lingnan. National Institute of Standards and Technology (U.S.) Engineering Laboratory mdu U.S. Dept. of Commerce, National Institute of Standards and Technology 2022-06-03. monographic 1 online resource (43 pages) : illustrations (black and white) text technical report eng This paper presents a simple correlation containing nine dimensionless parameters to predict the local convective boiling heat transfer within a micro-fin tube that was developed from a dataset that included a wide range of refrigerants, flow conditions, and hydraulic diameters. Flow boiling measurements from 36 studies were gathered to produce a dataset containing 29 refrigerants and 15 different hydraulic diameters ranging from 1.8 mm to 6.7 mm. The database was adjusted so that the definition of the Nusselt number, the Reynolds number, the heat flux, and heat transfer coefficient were all defined in the same way for each study. In addition, values for the most recent fluid properties were used for the calculation of dimensionless parameters that were used in the new correlation. The new correlation for micro-fin convective boiling predicted the measurements from the database to within 10.3 % for pure-refrigerants and azeotropic mixtures and 12.3 % for zeotropic mixtures. Mark A. Kedzierski; Lingnan Lin. June 2022. Title from PDF title page (viewed January 4, 2023). Includes bibliographical references. Approved by the NIST Editorial Review Board on 2022-05-10 Mode of access: World Wide Web. Systems requirements: Adobe Acrobat PDF reader. Refrigerants Boiling Enhanced heat transfer Low-GWP Micro-fin Refrigerant mixtures https://doi.org/10.6028/NIST.TN.2224 A