Size an air handling unit from its airflows and the outdoor, room and supply air: cooling and heating coils, humidifier, fan heat and room loads, with the air at every point and the process on a psychrometric chart.
HVAC Unit Sizing Calculator
jerinsantosh.com
Units
Weather
Size from
Supply fan
Dry bulb (°C)
Humidity
Outdoor
°C
Room
%
Supply
°C
Cooling coil
– kW – TR
- Supply fan airflow
- –
- Heating coil
- –
- Coil sensible / latent
- –
- Condensate
- –
- Humidifier
- –
- Fan heat
- –
- Room sensible
- –
- Room latent
- –
- Room sensible heat ratio
- –
- Return / relief air
- –
| Air | Dry bulb °C |
Wet bulb °C |
Dew point °C |
RH % |
Humidity ratio g/kg |
Enthalpy kJ/kg |
Specific volume m³/kg |
Airflow L/s |
|---|