WASET
    Varun,  Heat Transfer and Friction Factor Study for Triangular Duct Solar Air Heater Having Discrete V-Shaped Ribs.   journal   = {International Journal of Energy and Power Engineering}, [online]. World Academy of Science, Engineering and Technology.
    February 2015, vol. 99(3). 444 - 447
    [viewed 20 September 2024]. Available from: https://publications.waset.org/pdf/10000605.