Evaporarive cooling. How to calculate the cooling of the air?

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SUMMARY

This discussion focuses on calculating the cooling effect of evaporative coolers in a controlled environment. The scenario involves a box containing 3 cubic meters of air at 10% humidity, with room temperature water (27°C) being sprayed as the air is blown out by a fan. Participants explore the expected temperature drop and methods to control humidity levels, including achieving 100% humidity versus 40%. The conversation references concepts such as wet bulb temperature and dew point, indicating their relevance in understanding evaporative cooling efficiency.

PREREQUISITES
  • Understanding of evaporative cooling principles
  • Knowledge of wet bulb and dew point temperatures
  • Familiarity with humidity measurement techniques
  • Basic thermodynamics related to air and water interactions
NEXT STEPS
  • Research the calculations for evaporative cooling efficiency
  • Learn about humidity control techniques in HVAC systems
  • Explore the impact of water temperature on cooling performance
  • Investigate the use of psychrometric charts for air properties
USEFUL FOR

Engineers, HVAC professionals, and anyone interested in optimizing evaporative cooling systems for residential or industrial applications.

hacillunation
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Hey,
So I'm trying to figure out how effective evaporative coolers are...

Lets say, I have a box with 3 cubic meters of air with a humidity of a 10%. I blow it out with a fan and spary with water as it leaves the fan.
The water is room temp (which is let's say 27 C).

What temperature difference should I expect?
Is there a way to control the amount of humidity by spraying more or less water? (How can I reach 100% humidity versus 40%)?



Thank you very much!


P.S I read wikipedia about Wet bulb, and Dew point... That didn't really helped me out...
 
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