FunkedOut
FunkedOver
- Joined
- Mar 23, 2017
- Messages
- 850
- Reaction score
- 418
Well, got my 1st fly sparge under the belt last night.
Curious thing is that my pre-boil volume ended up about a quart more than predicted by BeerSmith.
I used the same 0.9600 fl.oz per oz of grain figure that worked so well for batch sparging.
Only thought I have is that somehow, the fly sparge compacted the grain bed more, squeezing out more wort, lowering the grain absorption rate.
The curve ball (has to be at least one) is that this was a large grain bill for me.
16.25 lbs of grain for a 5.5 gallon batch. I'm usually at 10-12 lbs.
Maybe the heavier grain bill squeezed itself?
My efficiencies were down, but I'm blaming the high OG (1.081) before I scrap or change the fly sparge thing.
Some system set up specs:
Any thoughts on why my absorption rate is down?
Curious thing is that my pre-boil volume ended up about a quart more than predicted by BeerSmith.
I used the same 0.9600 fl.oz per oz of grain figure that worked so well for batch sparging.
Only thought I have is that somehow, the fly sparge compacted the grain bed more, squeezing out more wort, lowering the grain absorption rate.
The curve ball (has to be at least one) is that this was a large grain bill for me.
16.25 lbs of grain for a 5.5 gallon batch. I'm usually at 10-12 lbs.
Maybe the heavier grain bill squeezed itself?
My efficiencies were down, but I'm blaming the high OG (1.081) before I scrap or change the fly sparge thing.
Some system set up specs:
- I matched the lauter rate to the pump with the ball valve on the MLT during vorlauf
- I bought a small pump that I throttled down to 1 quart per minute
- I measured and heated the sparge water exactly, then let the pump feed the MLT when the wort drained to about an inch over the grain bed
- Let the MLT run dry
- MLT has zero dead space (SS Brewtech InfuSsion 10 gallon)
- Sparge water added to MLT with the SS Brewtech recirculation manifold resting on grain bed
Any thoughts on why my absorption rate is down?