I am starting to piece the idea together and sketch out a design for a recirculating mash system. However, I am having a bit of difficulty figuring out how I can add a sparge arm/recirculation to my mash tun.
My cooler is a 48 qt rectangular cooler. I dont want to switch over to a round cooler if I dont have to spend the extra money. I love the space my cooler has, and the drain on it is 1/4 inch, so I get a nice slow flow rate from it.
I dont mine drilling holes or attaching anything to the lid and I know that a rotating sparge arm isnt necessary. I am not too concerned about efficiency as I can easily get 75-80% out of the system.
My thoughts are to run two parallel lengts of CPVC or copper tubing (CPVC b/c its cheaper) and drilling small holes every inch or so the wort and sparge water can just drip through the whole tubing. My understanding is that channeling wont be much of an issues if I keep the water above the grain bed and have the drips spread out.
I am also planning on using a small diameter tube to keep the pressure up so the water dispurses even, or close to it, throughout the tubing.
Has anyone tried something similar to these or have any other suggestions on how I can do this?