Yeah, it's pretty easy to set up really.
Have an array of snowmen trapped behind blocks, with a single blockbreaker pointing at the bottom block, snowmen constantly produce snow blocks at their bottoms, which are broken into snowballs, have those go to an automated crafting table to be converted into snow blocks, then have those sent to a compresser to be compressed into ice, have the ice pumped into the reactor.
[img width=800]
Snowman batteries, I use this for producing vis, but the principle is the same.
