> >But, the point is that a vacuum is counter-productive. You >*shouldn't* want a vacuum. > >Think of it this way (very simplified): > >A fan moves air. When the pressure on the intake side of the >fan is lower than that on the outlet side, the fan moves less >air (or, if you want to think of it like this, the fan must >work harder to move the same amount of air). When the >pressure on the inlet side is higher than that of the outlet >side, it moves more air. > >Air cooling works by convection. The more air you can pass >over a hot thing, the more heat dissipated. > >So, you want to move as much air as possible. > >It is therefore advantageous to have a blower (inlet fan) as >opposed to a "vacuum" so that you can move as much air as possible. > >Now, your argument about directing air over specific devices >does have some merit. Ideally you want drive plate fans >blowing air over the drives, adding to the *positive* pressure >inside your case.
Anthony is right. What Steve it getting at, however, is that he is accepting a slightly lower airflow overall in order to direct airflow over specific components, such as hard drives. My recommendation would be to mount the hard drives low in the case, put a fan right in front of them, and created a better balance of forced inlet and outlet flow. Sorry for jumping in, but pumps (fans, etc) are a topic on which I'm quite knowledgable. -rex -- [EMAIL PROTECTED] mailing list
