My ac compressor starting making a loud noise and then on the bottom of the compressor it started to spray a green fluid out in tiny loud bursts. it was almost a vapor and made a white smoke as it came out. the sound is similar to a air compressor impact wrench. earlier in the day it was making noises but no spray. what is the port on the bottom for and why is it spraying out?
make:2004 jaguar x type 3.0

the middle of the pic there is a round port. that is were the coolant is spraying from


coolant