Air volume is the total volume of air delivered or drawn in by an air-cooled radiator fan per minute, if calculated in cubic feet, the unit is CFM; if calculated in cubic meters, it is CMM, radiator products often use the air volume unit is CFM.
Calculation formula: N = V × n/Q?
1, N - the -number of fans (units); V - volume of the site (m3); n - number of air changes (times / hour); Q - the selected fan model of a single air volume of the selected fan model (m3/h).
2, air volume is the air-cooled radiator fan per minute to send out or inhale the total volume of air, if calculated by cubic feet, the unit is CFM; if calculated by cubic meters, it is the CMM, radiator products are often used in the unit of air volume is CFM.
Expanded Information: In the case of the same material of the heatsink, the airflow is the most important indicator of the cooling ability of an air-cooled heatsink. Obviously, the larger the airflow, the higher the cooling capacity of the radiator. This is because the heat capacity of the air is certain, a larger air volume, that is, more air per unit time can take away more heat. Of course, the cooling effect of the same air volume is related to the way the wind flows. The amount of air circulating per unit of time, there are other subdivisions such as the volume of air supply, fresh air volume: The volume of air supply is used to indicate the capacity of ventilation equipment such as a blower, and the unit is cubic meters per second. Fresh air volume, is the total amount of fresh air in the room. Fans can be categorized into many kinds, such as: negative pressure fan, water air conditioning, water curtains, roof fans and other ventilation and cooling equipment. At this time we have to rely on how to choose, today I'm here to briefly talk about the workshop cooling several methods, I hope to help you. Negative pressure fan is mainly the use of air convection, negative pressure ventilation cooling principle to work. By the installation site to the door or window natural inhalation of fresh air, quickly indoor air out of the outdoors (this ventilation and cooling equipment is very good, now widely used in various workshops and factories, by many customers favor, it is worth recommending). The chiller mainly uses underground water to work, the summer use of water pumps to pump out the water, after the indoor fan disk to achieve the purpose of cooling. Reference:
Wind Volume - Baidu Encyclopedia