reversing flow direction on a series loop

Al Letellier_9

In principal it should work, but in theory, you should do proper heat loss for each room and determine the need vs. output at design temp. Go figure!

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Rob_35

reversing flow direction on a series loop

I have a series loop fin-tube baseboard zone with oversized radiation on the first part of the loop, and merely adequate radiation on the last part.

There will be an opportunity during a repipe to swap ends, thus putting the warmer supply water through the adequate rooms first, then the overradiated room last.

Presently, this loop has a decent delta-T so it would seem there's a benefit to flipping the flow direction.

Any downside to this? Seems to make sense at first thought.

Thanks.

Rob_35

Did it

Thanks Al. That's the very reason I posed the question. The load calcs for various supply temps vs. ODT say it's a winner.

Brad White_9

Can you split it?

Intercept the return from the mid-point with a home-run and have two separate zones, one reversed from the original flow direction, the other remaining the same.

This will dramatically reduce the pressure drop (by 75% if of equal proportions) and give better control/satisfaction to more spaces.

Just a thought.

Rob_35

cantilevers, walls, and cabinets, oh my!

Not easily.... Neat idea, though.