Skip to Content

How much air is needed to evaporate 200 kg of water per hour

For a dryer evaporating 200 kg of water per hour the calculator gives the air flow and heat needed for the chamber temperature and exit humidity.

Parameters

Result

Approximate calculation using a simplified model: for designing equipment and process modes, consult a technologist.

Calculation example

What we calculate
Air and heat for drying
Outside air temperature
20 °C
Outside air humidity
60 %
Dryer temperature
65 °C
Air humidity at the dryer outlet
75 %
Water to evaporate
200 kg/h
Air required
1 452 m³/h
Air required (dry mass)
1 495 kg/h
Thermal power (heating and evaporation)
164,8 kW
Air per 1 kg of water
7,5 kg
Heat per 1 kg of water
0,82 kWh

Frequently asked questions

What does dryer air flow depend on?
On the amount of water evaporated and the moisture difference between inlet and outlet: the more humid the exhaust air, the less air is needed.

The calculations are approximate: they help to assess the process and compare options, but do not replace a process design and trials on a specific raw material. This section is for reference only and contains no commercial offers.