For a fan selected with a capacity of 5000 m3/h and a wind pressure of 10 kPa, how can one determine what the actual air volume and wind pressure will be?

To determine the actual air volume and pressure that can be achieved, the following factors need to be considered: 1. The performance curve of the fan: Each model of fan has a performance curve, which can be used to determine the air volume and pressure under different operating conditions. 2. Duct system resistance: The fan operates under the influence of the resistance in the duct system; if this resistance is too high, it will result in a decrease in the actual air volume and air pressure. 3. Ambient temperature and altitude: Ambient temperature and altitude also have an impact on the performance of fans. The airflow rate indicated on the fan is usually in cubic feet per hour, but in actual operation, the above factors must be taken into account to determine the actual airflow rate and pressure. When selecting a fan, the following factors need to be considered: 1. Air volume and pressure requirements: It is necessary to choose a fan with an appropriate air volume and pressure range based on the specific application and requirements. 2. Rated power and efficiency: It is necessary to choose energy-efficient and high-performance fans, while selecting an appropriate rated power based on the requirements. 3. Quality and brand: Choose fans with reliable quality and a good brand reputation to ensure the product’s service life and quality stability. .

1. The actual air volume and air pressure need to be converted; the conversion is carried out using the density specified during selection. The selection is based on the given flow rate, density, and pressure. The current flow rate can be converted using the current density, while the static pressure can be determined through measurements or by referring to diagrams. It’s also important to take into account factors such as pipe diameter – a proper design of the inlet and outlet pipes has an impact on pressure as well. 2. On the fan, the flow rate unit is usually specified according to the customer’s requirements. If the design follows those requirements, an actual pressure of 10 kPa can be achieved, with a flow rate of 5000 m³/h. However, according to the ISO 13348 AN3 performance tests, there is a deviation of ±5% in pressure. If standards such as API673 for the petrochemical industry do not allow negative deviations, it is possible to include a margin in the design so that the static pressure at the fan outlet can still reach 10 kPa. It is possible to require the manufacturer to conduct performance tests, and one can then attend the site to verify this. The attachment contains my preliminary selection; feel free to contact me at 15900764526 if needed. It’s fine if you don’t decide to purchase it

Performance testing can be carried out at the factory or on-site. When you prepare the data sheet, you can request that the flow rate be indicated; at an outlet pressure of 10 kPa, the gas is already compressed, so the volumetric flow rate will no longer be 5000 cubic units. The technical documents require the static pressure to be specified, not the total pressure. It’s best to choose a professional manufacturer for the fan