Moisture load calculation

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Project:

Desired room climate

HIDDEN VALUES

Atmospheric pressure mbar
Atmospheric pressure mbar
Tightness of building  
Surroundings  
Wind speed m/s
Infiltration, room tightness m3/h
Infiltration, door and/or air lock m3/h
Open holes m2 (Deduct covers like plastic curtains from the total hole area.)
Needed airflow through the open hole m3/h from room to ambient to prevent opposite flow
Total ventilation from outdoor m3/h
Vaporization coefficient  

Recusorb [1] or Consorb [2]: Recusorb units. Type in 1 to have Recusorb or 2 to have Consorb.
Number of units: pcs

Pull down time
Choosen unit: pcs
Starting temperature C
Starting relative humidity %RH
Atmospheric pressure mbar
Corresponding to g/kg
Capacity at starting climate: kg/h

for all dehumidifiers together, do not consider pre-cooling

Final temperature C
Final relative humidity %RH
Atmospheric pressure mbar
Corresponding to g/kg
Capacity at final climate: kg/h

for all dehumidifiers together, do not consider pre-cooling

Depreciation of moisture content in the room:
Partial time Elapsed time Moisture content in room  
Start moisture content in box C139: h g/kg
h h g/kg
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Design condition:
Total
Capacity at 20C/60%RH
     
dry airflow Dehumidifier
   
Moisture load per unit:
Correction factor K=
Choice:
 
      Capacity:
 
Starting condition  
Correction factor K=
Capacity

Chosen unit:
Number of units:
Airflow per unit:

Recusorb correction factor K
K=
degreeC %RH %RH %RH %RH %RH %RH %RH %RH %RH %RH %RH %RH

Desired room climate
C
%RH
   
gives correction factor
For 0C:
For 10C:
For 20C:
For 30C:
For room temp:
Korrigering för regluft in:
Total

Recusorb correction factor K
K=
degreeC %RH %RH %RH %RH %RH %RH %RH %RH %RH %RH %RH %RH


Starting climate
C
%RH
   
gives correction factor
For 0C:
For 10C:
For 20C:
For 30C:
For room temp:

Consorb correction factor K
K=
degreeC %RH %RH %RH %RH %RH %RH %RH %RH %RH %RH %RH %RH


Design condition:
Total Capacity at 20C/60%RH
     
dry airflow Dehumidifier
Moisture load per unit:
Correction factor K=
Choice:
 
  Capacity:
Desired room climate
C
%RH
   
gives correction factor
For 0C:
For 10C:
For 20C:
For 30C:
For room temp:
 
Starting condition  
Correction factor K=
Capacity:
Starting room climate
C
%RH
   
gives correction factor
For 0C:
For 10C:
For 20C:
For 30C:
For room temp:
Temperature °C
Relative humidity %RH
Moisture content g/kg

Outdoor design climate

Temperature °C
Relative humidity %RH
Moisture content g/kg

Moisture load

Ventilation, including infiltration

Room length: m
Room width: m
Room height: m
Room volume : m3
Warning!
This calculation assumes that the building is sealed in a proper way. Large cracks will give much higher leakage.Walls of un-painted gypsum board or brick will also create much higher leakage.
Doors height   width   length      
Door without air lock vestibule m m     minutes, opened per hour
Air lock vestibule, between the two doors: m m m times, passages per hour
Mechanical ventilation, exhaust fans etc. m3/h from room to ambient, should normally be 0 m3/h
Percentage leakage % of room volume per hour          
Total load from ventilation kg/h            

Personnel in the room    
Number of people  
Moisture load from each kg/h
Total load from people kg/h
Guideline:
Sitting down: 0,08 kg/h
Standing: 0,15 kg/h
Light work: 0,25 kg/h
Walking fast: 0,35 kg/h
 
Open water surface    
Pool length: m
Pool width: m
Pool surface : m2
Water temperature °C
Total load from water surface kg/h

Others

Total load from other sources kg/h

Total moisture load kg/h
Choosen dehumidifier:
with dry airflow:
 m3/h

Note that this is a general guideline only, please consult with our represenative before proceeding with the project. 
Please click here to find datasheet and drawing to above unit on our web site.
Please click here to find contact information to our representative on our web site.

Pull-down time hours if room starts with outdoor climate
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