[PDF] Top 20 Heat Transfer and Friction Factor Characteristics Roughened Channels A Review

... Singh et al. [24] function on discrete V-down ribs. Experiment was carried for Reynolds variety 3000-15,000 with relative gap width (g/e) and relative gap position (d/w) in range of 0.5-2.0 and 0.20-0.80 respectively, ... See full document

... current review it is found that almond shape is extended surface of ellipsoidal ...performance factor increases with use of almond shaped dimple on rectangular ...in heat transfer ... See full document

... in heat transfer is accompanied by considerable rise in pumping ...of heat transfer enhancement and thermo hydraulic ...to review various studies, in which different artificial ... See full document

... This review paper discuses the considerable experimental work which has been done on heat transfer augmentation through internal inserts in circular ...the heat transfer ...local ... See full document

... efficient heat exchange technique. Providing an artificial roughness on a heat transferring surface is an effective passive heat transfer technique to enhance the rate of heat ... See full document

... on heat transfer for a fluid flow through square duct and reported that a gap in the inclined rib accelerates the flow and enhances turbulence, therefore results found that the enhancement in the ... See full document

... on Heat transfer, flow friction and thermal performance factor characteristics in a tube fitted with delta winglet twisted tape, using water as working ...wall heat flux ...mean ... See full document

... the heat transfer surface ...comparable heat transfer improvements, but the friction factors are exorbitantly ...with heat transfer, where fluid mixing is the primary ... See full document

... into heat at the absorbing surface, and transfers this heat to a fluid (usually air or water) flowing through the collector as shown in ...low heat transfer co-efficient of absorber plate. The ... See full document

... of heat transfer and pressure ...drop, heat transfer and roughness height that were existed in the rough ...the heat transfer is generally improved by the roughness elements due ... See full document

... in heat transfer and pressure drop evaluations in corrugated ...the heat transfer, friction factor and thermal enhancement characteristics in order to achieve higher ... See full document

... of heat transfer enhancement in rectangular / square ducts which can be used in compact heat exchangers for the automotive industry, air-conditioning and refrigerant applications, internal cooling ... See full document

... of friction factor corresponded to relative roughness height of ...studing heat transfer problems, however due to complex nature of governing equations and issues in getting numerical ... See full document

... the friction factor up to ...wall roughened with repeated transverse ribs of wedge shaped ...artificially roughened solar air heater to examine the effect of circular transverse ribs roughness ... See full document

... of heat and momentum as uncovered by the recent large eddy simulation (LES) ...rib roughened wall [4–7], the effect of a square bar detached from the wall [8], the effect of periodic array of cubic pin–fins ... See full document

... for Heat transfer and pressure drop in a spirally grooved tube with twisted tape insert, Experiments were conducted in an open loop rig with water as the working ...maximum heat transfer ... See full document

... performance factor is evaluated since the factor is an important parameter indicating the potential of a twisted tape for practical ...performance factor decreases with increasing Reynolds number for ... See full document

... flow and the outer tube for hot water flow in counter current fashion. The inside diameters of the inner and outer tubes were 21.41 and 56mm, respectively. The tubes were 2000mm long and 2 mm thick. Copper duct and steel ... See full document

...  The overall enhancement ratio is useful to evaluate the quality of heat transfer enhancement obtained over plain tube at constant pumping power. It is found to be more than unity for all the Matrix coil ... See full document

... of heat transfer phenomenon in a U-loop tubular pipe for a non-isothermal tur- bulent flow considered the twist ...uniform heat flux adjoining the water domain ...the heat transfer rate ... See full document