Delta OHM HD37AB1347, Руководство пользователя

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The calculation of the percentage of outdoor air is not meaningful, if it is not correlated to the air
flow in the environment.
Let's suppose, for example, that the environment is an office. The ASHRAE 62.1 norm
recommends a ventilation rate of about 8.5 L/s×person.
Let's suppose that you have the following measurements:
Air Flow
= 500 L/s
Number of occupants = 10 people
% Outdoor Air =
17%OA
person s L
people
OA s L
× =
⋅
/ 5 . 8
10
% 17 / 500
In this case, the ASHRAE 62.1 norm recommendation of a ventilation rate of about 8.5 L/s×person
was met.
If, in the same environment, you have an air flow =
100 L/s , you need a %OA = 85% to meet the
ASHRAE 62.1 norm.
person s L
people
OA s L
× =
⋅
/ 5 . 8
10
% 85 / 100
In this example you can see that only correlating the %OA value with the air flow value you can
check if the ventilation rate meets the ASHRAE 62.1 norm.
4.6.2 Outdoor Air Calculation
Use the arrows ▲▼ to select the 6) Air changes menu item
MAIN MENU
1)
Informations
2) Logging
3) Serial
4) Settings
5) Air speed
6) Air changes
7) Probes calibration
8) Language
After confirming with ENTER, the following screen will appear:
AIR CHANGES
1) Use: CO
2
2) N. occupants: 01
3) FVm: 500 L/s
4) Measures CO
2
▼▲
select
<ESC> exit/cancel
<ENTER> confirm