Steam Distribution; Ambient Steam Distribution: Ventilated Steam Distributors; Steam Distribution In Cold Rooms; Ducted Steam Distribution: Linear And Concentrated Jet Distributors (Oem) - Carel heaterSteam User Manual

8. Steam distribution

For optimal performance of the humidifier, the steam produced must be introduced into the environment in a uniform way,
without projecting droplets and without noticeable condensation, using ventilated steam distributors or linear distributors. The
steam distributor must be chosen according to the place where the steam is introduced. If the steam is to be distributed directly
into the environment (rooms, warehouses, etc.), the ventilated steam distributors used (optional) should be fitted with a
motorised fan. If, on the other hand, the steam is to be introduced into a duct or air handling system, linear distributors must
be used, which exploit the speed of the air itself for distribution.

8.1 Ambient steam distribution: ventilated steam distributors

> 0,5 m
> 0,5 m
> 5 m
2,1 m
Fig. 8.1.1

8.2 Steam distribution in cold rooms

It is possible to humidify a cold room using a ventilated steam distributor, ensuring that this works within the limits of its
operating range. The cold room must have an operating temperature between -10°C and +20°C, with a relative humidity of not
over 80% rH. If these limits are not possible, the steam can be distributed in the cold room using a linear distributor.
In any case, the steam must not come into direct contact with cold air streams from the cold room's refrigeration unit, to avoid
possible re-condensation.
8.3 Ducted steam distribution: linear and concentrated jet distributors
For steam distribution in air ducts, the steam distributor must be suitably proportioned to the power of the humidifier and the
cross-section of the ducts. For this purpose, Carel supplies two ranges of linear distributors: one in aluminium, with plastic
ends (type E) and a premium range, made completely from AISI 304 stainless steel with double chamber (type L).
Figures 8.3.1 and 8.3.2 provide the dimensions of Carel distributors.
Table 8.3.1 indicates the minimum number and model of the distributors recommended for the type of humidifier used.
distributor code
SDP45E (aluminium)
SDP65E (aluminium)
SDP85E (aluminium)
SDP120E (aluminium)
SDP05L (stainless steel)
SDP06L (stainless steel)
SDP08L (stainless steel)
SDP10L (stainless steel)
SDP12L (stainless steel)
SDP16L (stainless steel)
SDP20L (stainless steel)
SDP E - Aluminium and plastic distributors
50
31,5 31,5
31,5
31,5
50
Carel code +030221761
Ventilated steam distributors, used to distribute steam
directly into the environment, can be mounted onto
the humidifier (see Fig. 8.1.1) or positioned
separately and connected to the humidifier (see Fig.
8.1.2) using steam conveyance tubing.
The drawings show the minimum recommended
distances to prevent the flow of humidified air from
coming into direct contact with persons, lights,
electrical appliances, false ceilings and cold surfaces
before the steam is completely absorbed by the
environment. For further details on the mounting
and use of ventilated steam distributors, please refer
to the specific instruction manual.
rated length
450mm
650mm
850mm
1200mm
450mm
550mm
750mm
950mm
1150mm
1600mm
2000mm
50
Steam input
D 22
D 56
100
57,5
condensation drainage
holes D
UR002 UR004
1
1
-
-
1
1
1
-
-
-
-
Warning: when using steam tubing with
an internal diameter of 30mm, remove
the 22mm steam inlet section
D 30
inclinazione 2°
D 8
Fig. 8.3.1
25
> 0,5
> 0,5
Fig. 8.1.2
(OEM)
models
UR006
1 1
1 1
1 1
- 1
1 1
1 1
1 1
1 1
- 1
- -
- -
holes D
31,5
50
preliminary version - rel. 2.0 - 03/09/99
heaterSteam
> 5
L 4
UR010
1
1
1
1
-
-
1
1
1
1
1
Tab. 8.3.1
31,5 31,5
D60
Drilling tempale