I have a friend who manages a rink and has asked me about the feasibility of cooling their rinks in the summer using the existing ammonia system. They do have rooftop units to cool but they hold trade shows on the rink concrete and find it gets too warm. What I believe would most likely happen is that it would most likely cool the slab but won't cool the air in the rink as he would like it to. Any thoughts on this odd idea?