RH problems

HydroKid239

HydroKid239

Well-Known Member
Bukvičák said:
I think it works like this... It is Relative Humidity and it is just counted of some math form of actual and absolute humidity. When you put these two humidities into other form you can count further and end up with form where RH fluctuation depends only on temperature changing. I can not explain it good in English but the result is like this. You have a room with air which has specific amount of water inside and temperature. RH depends only on temp (when there is same amount of water in the air). When the temp goes higher your RH goes lower but with completely same amount of water in the air. Problem is, when the lights go off and and temperature drops. Than your RH rising high plus that extra water from plant respiration.
Click to expand...
Don't get me wrong. This is a good read for me. I'll take all this info in... but i'm fkn stoned.. so I'll have to read this like 10-12 times.
 
HydroKid239

HydroKid239

Well-Known Member
Bukvičák said:
I think it works like this... It is Relative Humidity and it is just counted of some math form of actual and absolute humidity. When you put these two humidities into other form you can count further and end up with form where RH fluctuation depends only on temperature changing. I can not explain it good in English but the result is like this. You have a room with air which has specific amount of water inside and temperature. RH depends only on temp (when there is same amount of water in the air). When the temp goes higher your RH goes lower but with completely same amount of water in the air. Problem is, when the lights go off and and temperature drops. Than your RH rising high plus that extra water from plant respiration.
Click to expand...
Nah... I'm just really really stoned. I read it a second time. I get that.
 
Star Dog

Star Dog

Well-Known Member
The humidity in your tent is rising at light off because the temperature has dropped, the amount of water it takes to saturate it with moisture becomes less.
So for the exact same moisture content it'll read 50% at 25c but 65% at 20c and 80% at 15c (the figures are only an example you'd need to Google the exact % moisture to temperature)

Relative humidity is a measure of the moisture saturation for a given temperature, frosty cold air has very little ability to hold moisture so a tiny amount of moisture will make it read 100% saturated, hot air can hold lots so it takes many times more moisture to saturate it.

The dew appearing on the grass is due to heat disappearing and the air no longer having the ability to hold moisture so it dumps it, clouds do the very same thing.
 
G

GreenPeace22

Active Member
Bukvičák said:
I think it works like this... It is Relative Humidity and it is just counted of some math form of actual and absolute humidity. When you put these two humidities into other form you can count further and end up with form where RH fluctuation depends only on temperature changing. I can not explain it good in English but the result is like this. You have a room with air which has specific amount of water inside and temperature. RH depends only on temp (when there is same amount of water in the air). When the temp goes higher your RH goes lower but with completely same amount of water in the air. Problem is, when the lights go off and and temperature drops. Than your RH rising high plus that extra water from plant respiration.
Click to expand...
Your effort of trying to explain it is just too cute! You are my hero! Much appreciation!
 
G

GreenPeace22

Active Member
Star Dog said:
The humidity in your tent is rising at light off because the temperature has dropped, the amount of water it takes to saturate it with moisture becomes less.
So for the exact same moisture content it'll read 50% at 25c but 65% at 20c and 80% at 15c (the figures are only an example you'd need to Google the exact % moisture to temperature)

Relative humidity is a measure of the moisture saturation for a given temperature, frosty cold air has very little ability to hold moisture so a tiny amount of moisture will make it read 100% saturated, hot air can hold lots so it takes many times more moisture to saturate it.

The dew appearing on the grass is due to heat disappearing and the air no longer having the ability to hold moisture so it dumps it, clouds do the very same thing.
Click to expand...
Man, thank you so much! You just gave me a good idea!
 
You must log in or register to reply here.
Top