How to Humidify Air With Steam Calculations

Measure the temperature of the area you'd like to humidify with a thermometer. As an example, a room has a temperature of 50 degrees Fahrenheit.

Measure the humidity of the air you'd like to humidify with a hygrometer. As an example, the 50-degree Fahrenheit room has 80 percent humidity.

Consult a temperature/humidity table to determine the amount of steam content in the area. Using the example, a room at 50 degrees Fahrenheit with 80 percent humidity has 2.82 pounds per hour (lb/h) of steam.

Determine the temperature and humidity you'd like the area to be. As an example, you'd like the room to be at 80 degrees Fahrenheit and 45 percent humidity.

Consult a temperature/humidity table to determine the amount of steam content that will be in the area after reaching the desired temperature and humidity levels. Using the example, a room at 80 degrees Fahrenheit and 45 percent humidity has 4.27 lb/h of steam.

Subtract the result from Step 3 from the result from Step 5 to calculate the loading requirement of the steam humidification system. In the example, subtracting 2.82 from 4.27 equals 1.45. To transform air at 50 degrees Fahrenheit with 80 percent humidity to air at 80 degrees Fahrenheit and 45 percent humidity, you'll need a humidifier that can provide 1.45 lb/h of steam.