Due point for that air is 19.8C. Meaning it reaches 100% relative humidity at this point. If cooled even more, water condensates from air into droplets.
—
What this means: if you cool that air to 22 degrees (instead of 19.8) it will reach 87% humidity without loosing any water to the outside.
—
That’s why we need humidifiers in winter as the opposite thing happens: if we heat cold air that has 80% relative humidity to room temperature it will drop its humidity to 20%
Due point for that air is 19.8C. Meaning it reaches 100% relative humidity at this point. If cooled even more, water condensates from air into droplets.
—
What this means: if you cool that air to 22 degrees (instead of 19.8) it will reach 87% humidity without loosing any water to the outside.
—
That’s why we need humidifiers in winter as the opposite thing happens: if we heat cold air that has 80% relative humidity to room temperature it will drop its humidity to 20%