Hey Pangea, nice chiller. Looks pretty much exactly like mine except yours is a lot taller from the extra 30 plates. Let me know how it works. Mine still has not had any actual liquid in it yet. For anyone looking, they are on ebay every so often.. The brand name is 'Alfa Laval'. They make industrial chillers of all varieties and the ones suitable for large homebrewing/nanobrewing are about the smallest ones they make.
Slightly off topic, but do you plan on reusing your chiller water? I am thinking about reusing mine and trying to determine the best method. So far, I'm thinking about having two tanks, one in the walk-in, one just sitting out. I will have chilled water in the one in the fridge to cool the wort with. It will pump from the chiller to the outside tank, letting it sit until it cools to room temp. After that, I will pump it back into the walk-in to cool it down further. I figure letting it drop to room temp before putting in the cooler will reduce the thermal load on the cooler.