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Do the windows in closed chemical production facilities (that can be opened and closed manually) count as natural ventilation systems?

2021-08-22View Original

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Dear experts: Do the windows in closed chemical production facilities (which can be opened and closed manually) count as elements of natural ventilation? And how is the volume of air flow through natural ventilation determined? How should clause 5.2.4 of the \"Code for Design of Chemical Industry Heating, Ventilation and Air Conditioning\" HG/T20698-2009, which states that \"the intake and exhaust openings for natural ventilation should make full use of doors and windows,\" be understood?

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