Someone please explain...

Poulets De Cajun

Crowing
11 Years
Jun 14, 2008
5,251
112
309
Houston MetroMess, Texas
Why my humidity is HIGHER when the pan is nearing empty?


When the waterpan in my big cabinet incubator is FULL, the humidity is always in the mid 40's. However, when it starts to get LOW the humidity goes up into the 50's?

I dont understand it.

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I wondered why to when I put more water in my incubators the humidity goes down. I figure that the warm water collects all the humidty in the air when you put it in, and when you let it sit then the water begins to evaporate and go in the air again. Atleast thast what I think, but I dont know.

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Try filling your pan with hot water instead of room temp or cold water, it takes a while for the cool water to warm up and start to evaporate which causes a drop in humidity when adding more water into the pan.

edited to say, the surface area of the water stays the same regardless of volume. a 9 X 13 pan has 117 sq. inches of surface area regardless of how full it is. It has more to do with the ambient temperature of the water.
 
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Looking at your picture, when the water is full the fan is blowing across the top of your water and lowering the temp. You need to move the water or fan so that the water is only effected by the 100 degree temp. and not the fan.
 
The water pan is self fed by a 5 gallon bucket outside of the incubator, so temperature of the water shouldn't be an issue.

However, the fan blowing across the water sounds good. Although I dont know how I am going to move it...
 
You could use a lower pan and some kind of a deflector to keep the moving air off of the water or move the fan to one side with some kind of a partition to keep the air off the water.
 

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