Fozen water chiller

i have been reading this form for quite some time. that has given me the idea tto build my own water chiller. i will have some pics this weekend but wanted to give all a chance to shoot some ideas and thoughts my way. but what im doing is i have a ac unit i took the compresser off and building it inside a small frig unit the cooling unit will be a set of 3 4 inch round by 4 foot long copper pipe they will be stacked verticaly on the side of the frig inside the frist one will have 3 coils of copper lines in it the second one will have 2 sets of coils and the last one will have one coil in it. The water will run threw the 4 inch copper pipe in this order 1 2 3 and then to the computer i hope with some testing i can reach the temps of -0 F with the water mix of denatured alcohol and water if you have any ideas that i havent thougt of tell me please thanks

sonic

That sounds like it should work well. How many BTU's was the a/c unit though?

5000 btus