aqoza

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Can An HVAC System Control Corrosion In Clean
Air Rooms? The Heating ventilation and air
conditioning system (HVAC) is used to maintain a
good air quality index by controlling
temperature, humidity, airflow, and air
filtration. The main culprits of electronics
corrosion are the infiltration of airborne
contaminants. It is obvious if a person asks why
additional corrosion management measures are
needed if an HVAC system is already functioning.
In this article let us discuss why additional
corrosion monitoring and corrosion control
measures are required on top of HVAC. What
causes corrosion? The infiltration of airborne
contaminants from outside is the major
pollution-causing factor. These contaminants
find their way from industries, STPS, heavy
traffic, etc. The HEPA filter used in an HVAC
system can only filter the particles down to 0.3
microns in size. To know more about the gases
causing corrosion in industries please refer to
this article-
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Which are the gases causing corrosion of
electronics in data centers? Importance of
corrosion control unit. The HEPA filter inside
the HVAC does not remove gases. The diesel
exhaust, Oil smoke, etc can be well below 0.3
microns and can easily pass through the HVAC
filters. Even a minute concentration of these
gases can pose a significant threat. The presence
of 50 ppb (0.05 ppm) of H2S gas is considered a
severe environment for electronics. The list of
other gases and the concentrations denoting
their severity is mentioned below.
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Severity level G1- Mild G2- Moderat e G3-Harsh GX- Severe
Contamina nt Gas Concentration levels in parts per billion (ppb) Concentration levels in parts per billion (ppb) Concentration levels in parts per billion (ppb) Concentration levels in parts per billion (ppb)
H2S lt3 lt10 lt50 50
SO2, SO3 lt10 lt50 lt300 300
Cl2 lt1 lt2 lt10 10
NOx lt50 lt125 lt1250 1250
HF lt1 lt2 lt10 10
NH3 lt500 lt10,000 lt25,000 25,000
O3 lt2 lt25 lt100 100
Moreover, the HVAC system itself is not free from
corrosion. The condensation of water in the
evaporator coils or the chemical gases from
cleaning agents could accelerate the coil
corrosion and this results in pitting of the
coils and leakage of refrigerant which ultimately
hinders the efficiency of HVAC systems. The
mopping of the floor with bleach or any cleaning
substances produces chlorine compounds that can
damage the HVAC system as well as the
electronics used inside the facility due to
corrosion. The corrosion control unit
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filters the specific gases which cause corrosion.
While the humidity and temperature control can
be done using an HVAC system, the gas phase
filtration can be done by the corrosion control
unit to prevent corrosion. Filtration of
corrosive gases requires expert help. Being a
specialist vendor in gas phase filtration and
monitoring, Aqoza offers optimum performing
corrosion control units to various industries.
You can always reach our experts for any
corrosion monitoring units or corrosion control
unit requirements.
AQOZA CCU is a series of standalone filtration
units
comprised with corrosion control units for server
rooms functions to remove corrosive gases from the
room