"Industrial Ventilation" by The American Conference of Governmental Industrial Hygienists is another source. Basically hood exhaust will determine air exchange. ACGIH also indicates 50-80 cubic feet per minute (cfm) of exhaust per square foot of hood opening (as per Vicsidhu above), duct velocity 1,000 to 4,000 feet per minute, hood opening overhangs exhaust surface by 6 inches minimum, hood is 4 feet maximum above exhausted surface. Removable grease pan, and other criteria.
BOCA code in US only indicates 15 cfm per person of make-up ventilating air. Some hoods also have make-up air feed into the hood to keep hoods from exhausting too much conditioned building air.
I hope some of helps. I tried to eliminate ambiguities above because my Bulgarian is also lacking.