Originally Posted by calebawilson
Can draining the mash tun slower when batch sparging increase efficiency?
I have found that I get a clearer wort and a little better efficiency by not just opeing the valve and draining as fast as I can. The increased velocity tends to compress the grain bed and I get more fines for a longer period of time. It also seems to trap more wort in the grain bed.
I have tried a full open drain and closed the valve. I then openned the valve and was able to collect another 1 qt of additional runnoff over a 15 minute period.
With my equipment, I get the clearest wort and best efficiency running about 1/2 full open flow rate. Just something to try.