skuke writes:

Put hot water pipe insulation wrap on the outlet nozzle and run the
intake air line into a bucket of ice water. Use a long length (10-20
feet) of air line coiled up in the bucket. That will really help drop
the temp of the output air.

Drained ice is more efficient than floating ice at flash cooling. Try
putting a hole in the bucket so you don't have liquid water in it. It is
insulating the hose from phase change of the ice and thus the flash cooling
efficiency (like a wet suit keeps you warm). And put a refrigerated air
drier ahead, so you're not wasting time removing latent heat and sputtering
liquid condensate.