In Switzerland, there are WHS recommendations for fresh air supply in work places. These are given in cubic meters per hour and person:
- high air quality >36 m3/h.p
- medium air quality 22-36 m3/h.p
- low air quality
Dear Khaoula,
I cant find air change needed per hour for naturally ventilated offices.
Can you guide me more
Dear Halil,
I don't believe you will find a special air change requirement for naturally ventilated offices. You may find an air exchange rate required per person, which should be supplied either by mechanical or natural ventilation. To me, it doesn't make sense to define different air exchange rates for different supply systems.
If number of air changes per hour is given, the ventilation rate can be found
Dear Ingo,
from which standard I can find ACH required per person
Dear Salar,
how can I do the calculation, which standard I can read about ACH per hour
Dear Ingo,
I dont look ACH required for different supply systems ,
I look what ACH should be min...or max in naturally vent. office to obtain good air quality etc.
In this point I need your help...
Dear Dr. Halil, the Calculation is in Turkish Standard TS 825, P.12. regarding the ACH standards, I think it is different from place to place based on their climatic character, and environmental parameters. For example in hot - humid buildings the air change should be provided 20 times per hour. you can see (Mark Dekay, G.Z. Brown. (2001). Sun, Wind & Light: Architectural Design Strategies. P.287.
Dear Salar
IBook for Mark.... says ACH for house... I need ACH for offices.
TS 825 I looked TS 825 p12... there is no ACH in that page..
Do your have ACH for offices
Dear Dr. the code calculate the Air exchange rate. as you see but i do not think will find ACH as a code for offices in general, because as I believe it is depends on the climatic condition. I gave the reference in the book like an example to show that the condition is diff. from place to place. I think the ACH should be designed by designer..... good luck for your search dear Dr. Halil
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