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Halfgaar wrote:
> Halfgaar wrote: > > Before I close this thread, I'd like to point out something to you Nick: > > You can find this on the Innovatak (manufacturer of my radiator) site (the > site is german, this is world.altavista.com'ed): > > "The fine lamination of the radiator provides for an optimal heat emission > to the cooling air, without obstructing however the air flow substantially. > Further the air flow of the fan is optimally used by the integrated > Fanhouse, since by this pre-chamber the whole surface of the radiator is > flowed around by the cooling air. In addition this measure contributes also > to the reduction of flow noises - the radiator is very quiet therefore." > > This says that the fanduct is meant for spreading out the airflow over the > entire radiator surface, preventing a dead spot. > Any comments on this ?The noise will be less because the fan blades are further from the irregular radiator surface and so there will be less air beat against it. If it is, in fact, distributing the air across the radiator surface then it would be due to pressure build up on the radiator surface (periphery where the duct contacts it) causing some air to flow toward the lower pressure area in the center and then through the radiator there. However, that (back) pressure is also going to reduce the fan's total airflow. What they're describing resembles an air plenum in front of the radiator with the fan 'pressurizing' it and the plenum pressure then causing air to flow through the radiator. That works best, though, when the fan is smaller than the radiator so that the airflow doesn't have to make drastic direction changes. > Halfgaar |