May I ask if the duct for the fresh air valve (intake air valve) of the blower needs to be routed outside the workshop?
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Does the duct for the fresh air valve (air intake valve) of the blower need to be led outside the workshop? Can direct pipes be placed inside the factory building? Run it this way? Are there any regulatory requirements?
If it is a small blower, direct exhaust can be carried out inside the factory building; installing protective nets will suffice. If the air flow is high, or the process requires it, or there are exhaust gas emission points near the blower’s intake. Therefore, it is reasonable to locate the air intake outdoors, provided that the pressure drop in the intake duct allows for it.
Blowers come in different types with varying air volumes, so it’s best not to make generalizations. The so-called “fresh air” also has relevant standard requirements, such as moisture content, impurities, and levels of harmful gases. For reference.
Excuse me, which standard has requirements regarding fresh air? Thank you ； La
It’s best to refine the issues in discussions; “fresh air” has various uses – generally it is used for boiler combustion, while more specialized applications include its use in purification rooms, and so on. For a rough version, it doesn’t matter whether it’s new or old; but for a more refined version, certain requirements apply. Standard setting takes place at the organizational, industry, **, …… level. It’s better to clarify and specify the issues for targeted discussions, for reference.
It is used for emergency intake of fresh air in exhaust gas treatment systems such as RTOs, as well as for drawing in air for the operation of centrifugal fans
Actually, if this is a normal case, the main concerns should be the negative pressure generated inside the building, whether the doors and windows can withstand it, as well as the flow rate of the \"fresh air\" that enters through them. For reference.