Do you think it would be useful for recirculation of water through a plate chiller? I have a pretty big chiller and don't mind a slow flow rate.
My main reason for trying to do this is water conservation. During the winter, I am able to use our pool water for chilling, but during the Summer the pool water is close to 90 degrees.
Thanks for all the information so far.
Unfortunately, I'm still pretty skeptical. In a sense, arturo is right that it comes down to compressor size, but the kind of compressor you would need to cool wort at that volume and at that speed simply doesn't fit on a counter top. Rather than simply asserting that again and again, here are some numbers.
Figure it like this: 5 gallons of wort is about 40 pounds, and to cool 40 pounds of water 150 degrees requires 6000 BTU of heat transfer. Whether it's through a plate chiller or through direct feed, it's still 6000 BTU...that's just how much heat there is to move. Let's say that you're happy with a relatively slow chill, 1/2 hour. That ends up being a chiller with a 1 ton capacity. (A "ton" is a unit of heat transfer equal to 6000 BTU/hour). If you want something that competes with a whirlpool chiller, you need more like 2 tons.
This website sells chillers in this range, but they're just way, way bigger than what you are looking at with the Jaeger machine. Their 1 ton machine draws 18 amps of 220v power (a lot) and weighs over 400 pounds. Unless the Jaegermeister machine is more efficient than industrial equipment, it won't work.
This makes sense, too. The Jaeger machines are designed to very quickly bring a small amount of booze (ounces, not gallons) down to near freezing. I suspect that their heat exchangers can't handle continuous volumes for anything approaching the length of time you'd need. That said, if you can throw some specific numbers our way, we can stop speculating.
I'm curious about finding water friendly approaches, too, as there are some serious water shortage where I live. You could still use pool water to bring your temps down for your first 100 or so degrees below boiling, but after that you'd need to find a colder source. That said, a 90 degree pool sounds really nice. I'm freezing my ass right now.