OPERATION AND MAINTENANCE MANUAL
DTR MCK v.2.4
PAGE
GDYNIA
MODULAR AIR HANDLING UNITS
MCKS, MCKH, MCKP
2017 EN
9/45
KLIMOR Spółka z ograniczon
ą
odpowiedzialno
ś
ci
ą
Sp.k., 81-035 Gdynia, ul. B. Krzywoustego 5
Fax: (+48 58) 783-98-88; Tel.: (+48 58) 783-99-99
Service -
Fax: (+48 58) 783-98-88; Tel.: (+48 58) 783-99-50/51 Mobile: (+48) 510 098 081
Information in this document is subject to change
email:
klimor@klimor.pl
-
office
serwis@klimor.pl
-
service
2.3.2.3 HS humidification block
The task of this block is air humidification at the level of required relative humidity. This task is accomplished using
water or steam.
The AHUs can be equipped with three types of humidifiers:
Water humidifier
–
trickling filter (sprinkling bed) supplied with tap water
The trickling filter is formed as a water circulation system. A catch box is located under the trickling filter and non-
vaporized water as well as fresh water is gathered there. The float valve installed in the supply water system controls
an appropriate level of water in the reservoir. The circulating pump controls the water flow
–
some amount of water is
supplied to the trickling filter and the rest is supplied to the runoff. It ensures exchange of water in the reservoir as
well as cleaning the reservoir and the filter surface.
In order to ensure appropriate water flow through the humidifier it is necessary to maintain a required pressure of
supplying water. The humidifier operates at the range of 1÷10 bar of water pressure. The humidifier capacity depends
on this parameter and that's why the pressure value must be maintained at a level which has been determined when
the humidifier was selected.
Requirements related to the water humidifier installation are provided in section 6.2.4.
1. Trickling filter
2. Water distributors
3. Water distributors pipes
4. Float
5. Float valve
6. Manual drain valve
7. Water drain pipes
8. Supply manifold
9. Water drain control valve
10. Circulation pump
11. Outlet pipe
12. Water overflow outlet
13. Pressure protection
C. Water supply
D. Water outlet
Figure no 5
Water humidification system with trickling filter diagram
Steam humidifier
–
the humidifier using process steam
The steam humidifiers use process steam created at the site. The humidifier capacity mainly depends on this steam
pressure and that is why it is necessary to provide appropriate pressure in order to achieve required capacity. The
supply steam pressure should be determined at the AHU ordering stage. The humidifier can work at gauge pressure
of 0,15 to 4 bar.
1. strainer filter
2. dosing valve
3. drying chamber
4. noise dampening structure
5. steam lance with steam jacket
6. actuator
7. partitions
8. outlet
9. separation chamber
10. reverse dehydrator
Figure No. 6
Construction of the process steam humidifier
Operation principle:
The supply steam flows through a strainer and external part (so called "jacket") of the humidifier lance. It ensures ap-
propriate lance temperature and heating, preventing steam condensation on a cold surface. The steam is provided
from the lance to the humidifier distributor, where it is dried and injected into the lance which is controlled by the me-
tering valve. Adjustment of steam amount is a continuous process and it is controlled by the valve actuator. The con-
densate from dried steam flows off through the dehydrator to the system.
1
3
4
2
6
7
5
9
8
KEY
steam supply at supply pressure
steam at atmospheric pressure
condensate
10
