I was looking for a wort chiller that could cool down a boil that was 20-30 gallons. someone told me about a 'rib cage' design that looked pretty cool. i noticed that it was really 2 shorter coils with a shared inlet and a shared outlet. then i wonder if anyone had done that with 4 coils or a clover design.......i couldnt resist it, not with 100' of rolled copper just laying around. so here it is for your amusement