Can anyone recommend a cheap chilling system that I can use in a flat?

[fenners]

This sounds like a setup I'd really like to try. What tubing/adaptors do I need to hook up one of those pumps to a IC with a standard gardenhose attachment on it?

Figured it out. 5/8 inch inside diameter tubing & a 5/8 "garden hose male repair" connector that basically converts the other end of the tube into a garden hose that will attach to my IC. Success!

 

[jcoxen]

Figured it out. 5/8 inch inside diameter tubing & a 5/8 "garden hose male repair" connector that basically converts the other end of the tube into a garden hose that will attach to my IC. Success!

Right the first time. That's exactly what I use.

 

[RonPopeil]

This is going to be complicated but: if you combine a few ideas here you could have something interesting. Take the glycerol solution idea and run it through a counterflow chiller. If you could have that cold solution recirc through a refrigerator or freezer element you could be on to something.

I've seen pro breweries use liquid to air chillers. Pump hot wort through a radiator/heat exchanger with large fans mounted to it. Obviously this is less efficient since water > air but if the goal is to not run water then the best bet would be to recirc the wort through this type of chiller as fast as possible with a strong fan setup on each side of the exchanger in a push/pull.