Calculate how much water i need to raise air humidity

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SUMMARY

This discussion focuses on calculating the amount of water needed to raise air humidity for condensate formation using a psychrometric chart formula. The user determined that 0.112 grams of water is required to evaporate to achieve this humidity level. However, they encountered difficulties in calculating the evaporation rate under specific conditions: water temperature at 24°C, wind speed of 1-3 m/s, water surface area of 0.16 m², room temperature at 23°C, and room relative humidity between 60-85%. The user seeks assistance in determining the time required for the water level in their aquarium to reach a critical point.

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Taftarat
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Good day,

i am trying to calculate how much water i need to raise air humidity for condensate to apear. i use formula from psychrometric chart :

humidity ratio g/kg * volume(m3)/volume m3/kg = volume of water needed.

(18-15)*0.032/0.86=0.112g

so as i understand i need 0.112g of water to evaporate for condensate to apear.

then i tryed looking for formula to calculate how fast water evaporates in my given situation (water temp 24 celsius, vind speed 1-3m/s, area of water 0.16 m2, room temp 23 celsius, room relative humidity 60-85), and i faild... can anyone give me a hand with this one?

i am trying to calculate how much time do i have for water level in my aquarium to reach critical point.

thanks.
 
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There is no indication given of how the evaporation calculation was carried out or why it failed.
 

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