We have 2 tunnels with flooded evaporators running in our plant, and are planning to add one more which will be approx 1,8 times the size of the other two tunnels combined.

Would this necessitate we would have to increase the size of the rest of our plant as well? Can the extra necessary refrigerant be kept inside the new evaporator? We will be running either the 2 prior tunnels, or the new big one, this to streamline the packing and freezing of fish. They will not be run together as we dont have the compressor capacity anyhow.

Can the new tunnel be used as a liquid tank of sorts? I am no engineer, just lookin for a rough answer.