13
4
Basic planning
Condair GS 80 OC
C
G20
1. Required maximum steam capacity
2. Required combustion gas
All the data necessary for the selection and layout of a Condair GS...OC humidifier system are provided
in the following chapters.
4.1
Selecting the unit
The selection of the unit is reflected in the type description:
4.1.1 Calculating the maximum required steam capacity
The maximum required steam capacity is calculated from the following formulas:
V • ρ
m
D
=
• (x2 - x1)
1000
or
V
m
D
=
• (x2 - x1)
1000 • ε
m
D
: maximum steam demand in
kg/h
V
: volume of supply air portion per hour in
m
3
/h
(for indirect room humidification) or room volume to
be humidified per hour in
m
3
/h
(for direct room humidification)
ρ
: specific gravity of air in
kg/m
3
ε
: specific volume of air in
m
3
/kg
x
2
: desired absolute room air humidity in
g/kg
x
1
: minimum absolute supply air humidity in
g/kg
The values for
ρ, ε, x2
and
x1
can be gathered from the
h,x-diagram
or the
Carrier-Diagram
for moist
air respectively.
For a rough estimate of the calculated steam capacity, the following table can be used. The values
listed in the table are based on a desired room air temperature of 20°C and a desired relative room air
humidity of 45 %rh.
Note: To roughly estimate the calculated maximum steam capacity for larger supply air portions or room
volumes, the values listed in the table can be projected accordingly.
Содержание GS 120 OC
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