Standard Discussion: [201001][Weekly Topic] HG/T 20698-2009 Code for Design of Heating, Ventilation and Air Conditioning in Chemical Industries
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This post was last edited by zxx0877 on 2010-12-13 09:37. Standard number: HG/T 20698-2009. Standard title: Code for Design of Heating, Ventilation and Air Conditioning in Chemical Industries. Date of implementation: June 1, 2010. Please raise any questions related to this standard as well as any points that need clarification!
This post was last edited by dszhangcn on 2010-12-1 at 12:13. There is too little information regarding negative pressure control; moreover, under normal circumstances, different locations requiring negative pressure need to have varying levels of negative pressure in order to create a gradient. As stated in clause 6.1.3, air-conditioned areas where harmful substances are released should be maintained under negative pressure; the pressure difference should be in the range of 5 Pa to 10 Pa, but it should not exceed 50 Pa.
For Chapter 3, Indoor and Outdoor Calculation Parameters, the selection is usually determined based on the season. So, how should one make the selection in areas where the temperature difference between day and night is particularly large?
We haven’t purchased this standard yet, so we don’t know the specifics; let’s take a look first
Wouldn’t it be more conducive to direct discussion if the chapters that need to be discussed in the standards were posted?