1. The underground water pump room and equipment room are equipped with mechanical exhaust system, and the air exchange frequency is 5-6 times \ x0d \ 2. The underground garage is equipped with mechanical exhaust system and smoke exhaust system, and the air exchange frequency is 6 times \ x0d \ 3. Ventilation frequency of kitchen exhaust: Chinese kitchen, 40-60 times; Western-style kitchen, 30~40 times; Staff canteen kitchen 25~35 times. \ x0d \ 4。 The basement, semi-basement (except liquefied petroleum gas) or enclosed kitchen on the ground where gas cookers are used shall be provided with an independent mechanical air supply and exhaust system, and the ventilation volume: the air exchange times shall be no less than 6 times during normal operation; Emergency ventilation, not less than 12 times; When not working, not less than 3 times \ x0d \ 5. The ventilation volume of the underground garage should be 80% ~ 90% of the exhaust volume \ x0d \ 6. Mechanical ventilation should be set in the oil storage room of diesel generator room, and the air volume should be 5 times or more \ x0d \ 7. Ventilation of boiler room, direct-fired engine room and supporting rooms (using explosion-proof accident exhaust fan); The normal ventilation of the first floor oil-fired boiler room and oil-fired direct-fired engine room should be greater than or equal to 3 times; Emergency ventilation should be greater than or equal to 6 times; Normal ventilation of gas-fired boiler room and gas-fired boiler room should be 6 times or more, emergency ventilation of semi-underground or semi-basement should be 12 times or more, ventilation of boiler room and direct-fired engine room should be 6 times or more, emergency ventilation should be 12 times or more, and ventilation of direct-fired engine room of underground or basement boiler room should be 12 times or more. Ventilation between oil pumps should be greater than or equal to 12 times; Generally, the ventilation height is 4m, the ventilation volume between underground daily fuel tanks should be greater than or equal to 3 times, and the gas pressure regulating and metering room should be provided with a continuous exhaust system with ventilation volume greater than or equal to 3 times and emergency ventilation volume greater than or equal to 12 times. \ x0d \ 8。 Air change times in laundry room: 20-30 times in production room, 5 times in full ventilation when local ventilation facilities are adopted, 2-3 times in supplementary room 15 times \ x0d \ 9. Toilet ventilation: public toilet 10 ~ 65438. Residential toilets 5~ 10 times; For air-conditioned hotel bathrooms, the air exchange rate is 80% ~ 90% of the indoor fresh air volume; \x0d\ 10。 The smoking room should be provided with mechanical ventilation, and the air exchange frequency is 10~ 15 times \ x0d \ 1 1. The mechanical ventilation rate of elevator machine room should be 5~ 10 times \ x0d \ 65438. 14. The ventilation volume of the underground bicycle garage is 60m3/h \ x0d \ 15. Ventilation times of power distribution room: power distribution room 10, power distribution room 10, and the exhaust temperature should be less than 40 degrees.