If carful no need to recharge refrigerant system
the evap will be submerged .... to chill the water
use some type of glycol to keep mixture from freezing but watch you vicosity to save your pump from pushing sludge though the lines
open or closed loop will work depending on preference
Closd would be cleaner but not as effective
just grab a rubber made cooler for a res ... large enough to submerge evap and closed loop if desired ....
So to get started
1. closed or pump and dump
2. just CPU or GPU loop as well
3. Draw up realistic demensioned drawling of system
4. know size of res and purchase
5. Remove casing from AC unit with out damaging anything
6. Plan and create a fan system/casing/bank for heat removal on the condensor
7. Compresor and eletronics stand to be incoperated with condemnsor or not
8. submerge evap
8. execut water cuircuit in and out of res regaurdless of type
9. Seal said res
9. install blocks/pump/pumps/and fill with gloycol distilled water solution
10. wire up pumps and test
11. fire compresor and let run for an hour
12. test viscosity of loop and adjust as needed
13. Tear da bot up ......
this is not meant to be a step by step all inclusive guide... just a generalization of the events that must occure to make this happen ....
Do you have any mechanical ability what so ever as it will be helpful ...
Best of luck ....