Cooling the ATR Cabin
Ok you ATR gurus out there......here is something I'm pondering:
On ATR 42 and ATR 72 air conditioning system, the primary function of packs is is to provide conditioned air(cool) to respective compartments and the primary function of recirculation fans is to recirculate the air already in the compartments.
Suppose the aircraft is not preconditioned and passengers are on board, doors closed, engines running and HIGH FLOW selected and temp selectors close to min.......would selecting recirculation fans OFF increase cooling of cabin since there would no longer be any recirculation of warm cabin air with cool conditioned air from packs (With recirculation fans off only Conditioned(cool) air would be directed into compartments )
Your inputs greatly sought!