... are challenging due to divergences in Nusselt number and friction factor correlations. In addition to the influence of Reynolds and Prandtl numbers on the abovementioned correlations, recent studies have shown that GPHE performance is also affected by geometrical plate features, GPHE assembly accuracy quantified...

... computational studies are operated by employing the ansys fluent . Furthermore, experiments are steered to justify the computational findings. The investigations are conceded over Reynolds numbers: 5000–28,000. The impact of operational factors on Nusselt number, friction factor, and channel exit air...

... friction factor forced convection microscale forced convection heat exchangers heat-transfer enhancement micro/nanoscale heat transfer Sustainable and productive use of energy is a dynamic and constantly evolving process. Currently, energy conservation, recovery, and use of renewable power...

... Characteristics in Rifled Tubes ,” Heat Mass Transfer , 54 ( 5 ), pp. 1503 – 1509 . 10.1007/s00231-017-2247-5 f = friction factor, dimensionless h = heat-transfer coefficient, W / m 2 K k = thermal conductivity, W/m-k m = mass, kg L...

..., a relative baffle height of 1, and an open area ratio of 21%, the maximum increases in the Nusselt number (Nu) and friction factor (f) were 2.84 and 7 times, respectively. A maximum value of 1.69 is found at e/H = 0.40, P/e = 6, and b = 34% for the thermo-hydraulic performance parameter. Correlations for (Nu...

... potential). Performance evaluation criteria (PEC) and friction factors were analyzed to evaluate the penalty in pressure drop for the heat transfer enhancement achieved. The experimental analysis revealed a maximum heat transfer enhancement in the coolant of 14.2% at CFR of 6lpm using 0.12% vol. fraction...

... to conduction is corrected by a Reynolds-averaged Navier–Stokes (RANS) conjugate heat transfer calculation, which was validated by the mean velocity, friction factor, and temperature fields from experiments and large eddy simulation (LES). Nusselt number distributions illustrate that surface heat transfer...

... author. Email: [email protected] Email: [email protected] 24 05 2021 21 09 2021 24 09 2021 17 11 2021 thermo-hydraulic performance parameter friction factor liquid crystal thermography Reynolds number Nusselt number local convective heat transfer...

...% is found in the value of Nusselt number with double strip helical screw insert at twist ratio of 1.5 and low value of Reynolds number in the flow of nanofluid than water in plain tube. The common correlations of Nusselt number and friction factor are generated. The thermal performance factor (TPF...

... the effects of wavelength (λ), porosity (ξ), and height (H) of the sinusoidal wave of the insert as well as the Reynolds number (Re) on the friction factors (f) and Nusselt numbers (Nu). Twelve inserts are formed from the flat metal mesh screens for testing between the Reynolds number (Re) of 400 and 35,000...

...% and 39% while adding 0.1 wt% of SnO 2 and Ag nanoparticles, respectively, due to the unique intrinsic property of the nanoparticles. Further, the convective heat transfer coefficient was enhanced because of improvement of thermal conductivity of the two phase mixture and friction factor increased due...

... performance turbulent flow ribs friction factor The inward flow between two circular disks resembles flows that occur in many engineering applications such as solar chimney power plant collector, exit of a geothermal reservoir, and disk type heat exchangers. For these applications, techniques...

...Biplab Das; Asis Giri; Suman Debnath A computational analysis of conjugate mixed convection heat transfer from shrouded vertical nonisothermal heat sink on a horizontal base is performed. The overall Nusselt number and the product of friction factor (f) and Reynolds number (Re) are found to vary...

... . Manuscript received August 22, 2013; final manuscript received March 2, 2014; published online April 17, 2014. Assoc. Editor: Ranganathan Kumar. 22 08 2013 02 03 2014 compact heat exchanger onvective heat transfer friction factor...

... friction factor Colburn factor Heat exchangers play an important role in many industries. Nowadays, to save energy, more efficient heat exchangers are required. Plate-fin heat exchangers (PFHEs) and tube-fin heat exchangers with wavy surfaces are characterized by high compactness and excellent...

... rigorous modeling and fast numerical solutions for transport phenomena in regenerative compact heat exchangers. volume averaging theory regenerative Heat exchangers random fiber matrices experimental closure design data heat transfer coefficient friction factor In the expression for h...