Air volume of the air cooler, fan
Thread Content
Can anyone tell me how to calculate the air flow rate of an air cooler? And how to select a fan?
Send the parameters over, parry.chen@airec.com.cn
The air volume is determined through heat exchange calculations to meet the requirements of heat exchange. The fan is selected based on wind resistance, wind speed, air volume, and the fan’s characteristic curve.
The air volume is calculated based on the operating conditions, while the fan selection depends on both the air volume and air pressure; once these two values are determined, the appropriate fan can be chosen
Air volume = 3600 * wind speed * face area. The pressure head of the fan = 0.521 * fin coefficient * number of tube rows * wind speed^1.504
Thank you to the kind friends upstairs. Excuse me, for the 5th floor, was the wind exposure area determined from samples?
Back to floor 6: the wind exposure area = length * width of the equipment enclosure, using the same calculation method as for the area of a rectangle.
The air volume is calculated based on the process parameters such as heat transfer amount and outlet air temperature; if the type of tube bundle is known, it can also be calculated using the formula from floor 5. The windward area is the length times the width of the air duct； The selection of the fan is determined by calculating the efficiency based on the air volume, air resistance, and the performance curve of the fan.
The characteristic curve of the fan is in that book. Thank you