Experimental investigation of the convective heat transfer characteristics of TiO2/distilled water nanofluids under constant heat flux boundary condition

Heat transfer augmentation in a tube using nanofluids under constant heat flux boundary condition: A review

“…Gupta et al [58] carried out their experimental work to study the convective heat transfer characteristics using TiO 2 and distilled water inside a copper tube. Their study includes particle of weight concentration containing 0.05, 0.1, 0.3 and 0.5 wt% .They further studied the effects of nanoparticles weight concentration on Nusselt number and heat transfer coefficient under velocity (0.1659-0.2322 m/s).Their results includes an increment in the heat transfer coefficient from 29.93 to 50.11% with the rising the particle weight concentration (0.1-0.3 wt%) and flow velocity.…”

Thermal and hydraulic performance of ZnO/EG based nanofluids in mini tubes of different diameters: An experimental investigation

“…At the same time, the hydraulic characteristics of the NFs did not affect significantly. Gupta et al [ 31 ] examined the HTC of TiO 2 /DW NFs inside a copper tube (ID = 8.0 nm, OD = 10 mm, L = 1.05 m) under laminar flow conditions. HTC of NFs was directly proportional to the NP's mass loading and fluid flow rates.…”

Performance analysis of Al2O3–R718 nanorefrigerant turbulent flow through a flooded chiller tube: a numerical investigation

“…A major portion of numerical studies which analyses the nanofluid flow deals with laminar flow and laminar forced convection. Moreover, results published in the open literature for turbulent forced convection in nanofluid flow through circular tube were generated by imposing constant heat flux boundary condition wherein the bulk temperature of nanofluid was considered to be above 20 °C [36,48,49]. The degree of augmentation in the thermal conductivity of nanofluid is lower at temperatures below 20 °C.…”