Film condensation heat transfer characteristics of R134a on horizontal stainless steel integral-fin tubes at low heat transfer rate

Rin Yun, Jaehyeok Heo, Yongchan Kim

    Research output: Contribution to journalArticlepeer-review

    16 Citations (Scopus)

    Abstract

    Condensation heat transfer characteristics of R134a on the integral-fin tubes are experimentally investigated. The test tubes are made of stainless steel, and the root diameter of the tubes is 13.27 mm. The height of fin is 1.19 mm, and the densities of the integral fin are 19 fpi and 26 fpi. The present tests were conducted at the saturation temperatures of 20 °C and 30 °C. The condensation heat transfer coefficients of the tubes having 19 fpi and 26 fpi at the saturation temperature of 20 °C are higher than that of the plain tube by 4.4 and 3.1 times, respectively. When the temperature difference across the condensate film is less than 0.7 °C, the enhancement of the tube of 19 fpi is much larger than that of the tube of 26 fpi. The Honda and Nozu model shows the smallest mean deviation between the estimated values and experimental results among the existing models.

    Original languageEnglish
    Pages (from-to)865-873
    Number of pages9
    JournalInternational Journal of Refrigeration
    Volume32
    Issue number5
    DOIs
    Publication statusPublished - 2009 Aug

    Bibliographical note

    Funding Information:
    This study was supported by the Korea University.

    Keywords

    • Condensation
    • Experiment
    • Finned tube
    • Heat transfer
    • Horizontal tube
    • R134a
    • Refrigerant
    • Stainless steel

    ASJC Scopus subject areas

    • Building and Construction
    • Mechanical Engineering

    Fingerprint

    Dive into the research topics of 'Film condensation heat transfer characteristics of R134a on horizontal stainless steel integral-fin tubes at low heat transfer rate'. Together they form a unique fingerprint.

    Cite this