HM3Humidier
A
T
1
2
3
4
5
6
7
5
10 15 20 25
30 35
Figure9.1Capacitydiagram
A=Addedhumidity△X(g/kg)
T=Roomtemperature°C
10to90%istherelativehumidityintheroom
Grayareaindicatesfreezingcondition
Examplecalculationofrequiredhumidierairow
Forpremiseswithatotalairreplacementrateoftwiceanhourandtheroomvolume
(WxLxH)=20x40x4=3200m
3
.
Thismakestheventilationairowq
1
=2x3200=6400m
3
/h.
Forarequiredhumiditylevel40%RHat22°C,theabsolutemoisturecontentcanbeobtainedfroma
diagramoradigitalconverter.Inthiscaseitis6.7g/kg.Thecorrespondingincomingairmoisturecontent
forthedriestdayisreadas1.8g/kg.
TheaddedmoisturefromthehumidierisfoundfromFigure9.1byenteringtherequiredhumiditylevel
androomtemperature.Inthiscaseitis2.8g/kg.
Therequiredhumidierairowqiscalculatedusingthefollowingformula:
q=q
1
(X
2
-X
1
)/△X
q=6400(6.7–1.8)/2.8=11200m
3
/h
Thisowisdividedbythehumidier’sowcapacity,i.e.thenumberofhumidiersrequiredtoachievethe
owrate.Toachieveahumidierowof11200m3/h,severalhumidiersarerequired.Therearetwo
options:
■1xHM310000(humidierairow10000m
3
/h)togetherwith1xHM32000(humidierairow2000
m
3
/h).Resultsinacheapersolutionandonlytwounitsneedtobeinstalled.
■2xHM35000(humidierairow5000m
3
/h)togetherwith1xHM32000(humidierairow2000
m
3
/h).Distributesthemoisturebetterandisaslightlyquieteroption.
37DimensioningTEN-HM3-B1506