Abstract
An experiment has been carried out for forced convection of Freon-113 ( Pr = 8.06) in a channel packed with small glass spheres (3, 5 and 6 mm in diameter) and with chrome steel spheres (6.35 mm in diameter), respectively. The experiments were carried out for 4000 < Re h < 17000 and 0.06 < γ < 0.13 in a packed channel with L/ H = 9. Both the heat flux to the wall and transverse temperature profiles inside the channel were measured. It is found that the Nusselt number increases as the particle diameter is decreased. The effects of the thermal conductivity ratio of the solid to fluid phase on the Nusselt number and temperature distribution are small for the range of the Reynolds number considered. Based on the 28 experimental runs, a correlation equation for the Nusselt number is obtained as Nu h = 0.31 Re 0.814 h e −1.63 γ . It is also found that heat transfer in a packed channel is approximately three times higher than that in an empty channel for Re h ranging from 5000 to 17000.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
