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Dew-Point Moisture-Load Sizing Calculator
Estimate the moisture-removal load and a starting process-airflow class for a room that must hold a low relative humidity or dew point with a rotary desiccant dehumidifier.
Suggested process airflow & capacity class
– m³/h
· – CFM
–
Moisture load to remove
– kg/h
Humidity ratio change
– → –
g/kg
| Computed quantity | Value |
|---|---|
| Room volume used | – m³ |
| Current humidity ratio Wcur | – g/kg |
| Target humidity ratio Wtgt | – g/kg |
| Infiltration moisture load | – kg/h |
| Extra process load | – kg/h |
| Total moisture load | – kg/h |
| Suggested airflow | – m³/h |
Your target air is very dry (target humidity ratio in molecular-sieve territory).
A standard silica-gel wheel may not reach it in one pass — a molecular-sieve wheel
and/or a multi-stage arrangement is likely required. See the desiccant media selector,
and confirm the staging with Koven Air.
Planning estimate only. This calculator uses simplified psychrometrics at 101.325 kPa, an infiltration-only load model, and a rough 6 g/m³ pickup rule. It ignores permeation, product/process latent gains beyond your entry, fresh-air make-up, reactivation energy, and duct losses. Treat the airflow and class as a starting point, not an engineered specification.
Want an engineered sizing figure and wheel selection for your exact conditions?
Request a Koven Air RFQ
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