Portable Air Conditioner?

I used to sell Cold Wave AC spot cooling units. They were water cooled and they took two 3/8 tubes, one in and one out and they were about the size of a portable room humidifier only taller. They had a modulating water valve to regulate head pressure and they were very efficient cuz hot weather doesn't drive up the head pressure. I usually put them in rooms where a company would turn a small room into a copier or computer room. I think they were available up to 1 ton net btuh... that means a full useable ton of cooling, not some phony net rating that requires unrealistic ambient conditions. The problem these days might be the one-pass water issue. Craig
I just did a search and they are still around - koldwave.com
Click on products and then the water cooled button. They have up to 23kbtuh now.