Latent Heat Formula:
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Definition: Latent heat is the heat that increases the specific humidity without a change in temperature during phase transitions.
Purpose: This calculator helps determine the energy required for phase transitions between liquid and gas states.
The calculator uses the formula:
Where:
Explanation: The natural log of pressure is adjusted by the integration constant, then multiplied by the gas constant and temperature.
Details: Accurate latent heat calculations are crucial for designing heating/cooling systems, understanding weather phenomena, and chemical process engineering.
Tips: Enter the pressure in Pascals, integration constant (default 45), and temperature in Kelvin. Pressure and temperature must be > 0.
Q1: What is the integration constant?
A: The integration constant is determined experimentally and depends on the specific substance and conditions.
Q2: What units should I use?
A: Pressure must be in Pascals and temperature in Kelvin for correct results.
Q3: Can this be used for all substances?
A: The formula is general, but the integration constant must be adjusted for different substances.
Q4: How accurate is this calculation?
A: Accuracy depends on having the correct integration constant for your specific application.
Q5: What's the physical meaning of negative latent heat?
A: Negative values indicate heat release (condensation) rather than absorption (vaporization).