Originally Posted by zosomeone
So from what I read about manifolds from Palmer's How to Brew, I'm assuming that making my pipes point downwards would be detrimental to my efficiency. So in order to correct this, the majority of the pipe should be in the same direction as my outflow pipe, longitudinal?
From Palmer's book:
Here are the summary guidelines for designing efficient manifolds and lauter tuns:
Have the straight line distance to the drain be as short as possible. In other words, orient the pipes longitudinally with respect to the drain.
Deeper grainbeds have more uniform rinsing, all else being equal.
The closer the pipe spacing, the more uniform the flow, all else being equal. A spacing of 6 inches is the maximum in my opinion. A spacing of 2-4 inches is preferred.
The spacing of the pipes from the wall of the cooler should be S/2 or slightly greater to avoid preferential flow down the smooth walls.