Abstract
Abstract In this paper, the effect of nanofluid temperature on the heat transfer rate has been studied during immersion quenching in Carbon Nanotube (CNT) nanofluid. For this purpose, CNT nanofluid was prepared by suspending 0.25wt% of chemically treated CNTs (TCNT) in de-ionized (DI) water without any surfactant. Quench probes with a diameter of 20 mm and a length of 50 mm were machined from 304L stainless steel and quenched in CNT nanofluid when maintained at 30 °C, 40 °C and 50 °C. The heat flux and temperature at the quenched surface were estimated based on the Inverse Heat Conduction (IHC) method using the measured temperature data during quenching as input. The computation results showed that the peak heat flux increased when the CNT nanofluid was maintained at 40 °C than at 30°C and decreased with further increase in the CNT nanofluid temperature. The enhanced heat transfer performance of CNT nanofluid during quenching at a slightly higher temperature is attributed to the increase in the Brownian motion of CNTs in nanofluid. The reduced heat transfer rate when the CNT nanofluid maintained at 50 °C during quenching was due to the predominant effect of quenchant temperature on quenching heat transfer rate.
Sign-in/Register to access full text options 
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.
