I believe Dennis intended to say: "you want the coolant entering the heat exchanger on the side the air is leaving". Larry A.
On Sat, Nov 27, 2021 at 10:56 AM Dennis Haynes <d23haynes57@hotmail.com> wrote: > From the equipment life and reliability perspective there is no > difference. From the heat transfer performance there is but since this coil > is relatively small and the coolant flow available relatively great you > probably will not notice the difference. > > > > From the design point of view for heat transfer coils the preferred flow > would be for the source medium (coolant) to counterflow the medium being > heated or cooled. In other words you want the coolant entering the heat > exchanger on the side the coolant is leaving. This arrangement provides the > greatest temperature rise. There are situations where this is not done for > example, heating systems taking in air at freezing temperatures in systems > not using antifreeze. Especially if the coolant is throttled for control. > The objective there is to prevent the coil from freezing. > > > > Dennis > |
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