The experimental analysis is conducted to evaluate the thermal hydraulic performance of nanofluid flow in a tube with a helical screw insert at a number of strips and different twist ratios in a transition flow regime. The Nusselt number is achieved the enhancement with nanofluid flow in the double-strip helical screw tape (DS-HST) as compared with the single-strip helical screw tape (SS-HST) insert with decreased values of twist ratios and increased values of Reynolds number. Maximum values of Nusselt number are found at 1.5 of twist ratio and higher values of Reynolds number. Common correlations of the Nusselt number and friction factor are developed. Thermal performance factor achieves maximum values with the DS-HST insert at 2.5 of twist ratio as compared with the SS-HST inserts in the range of Reynolds number. This analysis shows suitability of DS-HST inserts for enabling the miniaturization of heat exchanger.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Thermohydraulic Analysis on Helical Screw Insert at Different Strips with Nanofluid


    Contributors:

    Published in:

    Publication date :

    2020-06-11


    Size :

    10 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English