What factors should be considered when choosing a fresh air systemBefore choosing a new fan, one should understand the produc... / <<>>
What factors should be considered when choosing a fresh air system / <<>>
Two or more new fans are found in the performance table of fresh air selection. The more efficient, the fewer. Of course, compare a larger adjustment range and weigh the pros and cons. If the diameter of the fan impeller is chosen to be much larger than the diameter of the original fan, the original part of the fan strength calculation and the critical speed of the shaft must be used in order to make use of the original motor shaft, bearing and support, the starting time of the motor, the initial part of the fan and the critical speed of the shaft.
When the centrifugal fresh air fan is selected, the motor power is less than or equal to 75KW, and the valve cannot be installed when starting (functions: cut-off, diversion, voltage stabilization, shunt, etc.). Heater fresh air unit mainly deals with outdoor air, and air conditioner deals with air handled by new fans. However, the new fan can have return air or fresh air, both in order to better adjust temperature and humidity parameters. A fresh air exchanger is an air-conditioning unit that provides fresh air. In terms of function, it can realize constant temperature and humidity, or simply provide fresh air according to the requirements of the use environment. Functions such as dust removal, dehumidification (or humidification), cooling (or heating) can be determined according to the needs of the use environment. The more complete the function, the higher the cost. When high temperature flue gas or air is discharged, when centrifugal boiler induction fan is selected, the starting valve should be set to prevent overload in cold operation.
Geluidsreductievereisten van het ventilatiesysteem: de cirkelsnelheid van de impeller (verwijst naar de wielpropeller) dient eerst te worden gekozen op basis van de hoge en lage efficiëntie van het nieuwe ventilatiesysteem. De bijbehorende geluidsreducerende maatregelen moeten rekening houden met het trillingsgeluid (dB) en de trillingsvoortplantingsmodus van het ventilatiesysteem. Een veer- of rubberen schokdemper kan worden gebruikt om de trillingen van de verse-luchtventilator en -motor te verminderen.
