We have a long-term practice combined with a relatively simple and more reasonable calculation method: that is, the volume calculation method, some methods meet the basic theory of negative pressure system.The specific algorithm is as follows:
One: first know the building volume to be installed (length * width * height) unit meters.
2: the size of the known building divided by the selected fan air volume: such as: FJ48-1250C fan air flow 670 cubic meters / minute. = Single fan air exchange time.
Three: the exchange time of a single fan multiplied by 60 converted into seconds.
Four: the general animal and plant environmental comfort of 40 seconds -50 seconds.
Five: the number of the three divided by the number of 45 is the number of selected fans of the value of the fan.
For example: know a pig farm a pig house length of 70 meters, width of 8 meters high 3 meters.
One: pig house volume: 70 * 8 * 3 = 1680 square meters.
Use FJ48-1250C exhaust fan. Get this fan air volume of 670 cubic meters / minute.
Two: 1680/670 = 2.51 cubic meters / minute = 150 seconds.
Three: 150 * 50 = 3 units.
Because the three fans is the maximum. So the choice of evaporative cooler pad more than two to three square meters, which is installed 18 square meters evaporative cooler pad appropriate.
In addition: you can raise the wind through the pig ceiling or increase the windshield to achieve the effect of cooling.
