Saturation vapour pressure equation formula

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SUMMARY

The saturation vapor pressure equation is defined as Pws = 1000 * e^(52.58 - 6790.5/T - 5.028 * ln(T)), where Pws represents the saturation vapor pressure and T is the temperature in Kelvin. A common issue arises when users attempt to compute the value of e, which is approximately 2.71828, leading to incorrect results if not applied correctly. Proper understanding of logarithmic functions and unit conversions is essential for accurate calculations. Users are encouraged to verify their temperature input in Kelvin to ensure correct application of the formula.

PREREQUISITES
  • Understanding of the saturation vapor pressure concept
  • Familiarity with the mathematical constant e (approximately 2.71828)
  • Knowledge of logarithmic functions, specifically natural logarithms (ln)
  • Ability to convert temperature units to Kelvin
NEXT STEPS
  • Research the derivation of the saturation vapor pressure equation
  • Learn about the properties and applications of the mathematical constant e
  • Study logarithmic functions and their applications in scientific calculations
  • Explore temperature conversion methods, particularly to and from Kelvin
USEFUL FOR

Students, meteorologists, chemists, and anyone involved in thermodynamics or atmospheric science who needs to calculate saturation vapor pressure accurately.

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Pws=1000⋅e[[52.58]-[6790.5/T]-[5.028lnT]]
T= temprerature in Kelvin
Pws= Saturation vapour pressure
I plugged in my temperature to the formula in Kelvin, I couldn't arrive at the correct answer. How do you get the e value of the equation (superscript above).
My problem could be the trigonometry, or the unit conversion? I am inviting anyone who is knowledgeable with this subject matter. Thank you.
 
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I assume this is Pws=1000e(52.58-6790.5/T-5.028lnT) where e is 2.71828 as in ln(e)=1.

What answer did you get for what T?
 

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