Thermodynamics 2 min read
Psychrometer
Any instrument capable of measuring the psychrometric state of air is called a psychrometer. As mentioned before, in order to…
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Thermodynamics 1 min read
Wet-Bulb Thermometer
In practice, it is not convenient to measure the wet-bulb temperature using an adiabatic saturator. In stead, a thermometer with…
Thermodynamics 1 min read
Psychrometric chart
A Psychrometric chart graphically represents the thermodynamic properties of moist air. Standard psychrometric charts are bounded by the dry-bulb temperature…
Thermodynamics 1 min read
Humid specific heat
From the equation for enthalpy of moist air, the humid specific heat of moist air can be written as: where…
Thermodynamics 3 min read
Enthalpy
Enthalpy is the measure of heat energy in the air due to sensible heat or latent heat. Sensible heat is…
Thermodynamics 2 min read
Important psychrometric properties
Dry bulb temperature (DBT) is the temperature of the moist air as measured by a standard thermometer or other temperature measuring…
Thermodynamics 2 min read
Methods for estimating properties of moist air
In order to perform air conditioning calculations, it is essential first to estimate various properties of air. It is difficult…
Thermodynamics 1 min read
Amagat’s & Dalton’s Law
Amagat’s Law The volume of an ideal gas mixture (V) is equal to the sum of the component volumes (Vj’s)…
Thermodynamics 2 min read
MASS AND MOLE FRACTION
If we want to deal with the problems of gas mixture, two laws should always be taken into consideration. One…
Thermodynamics 1 min read
Second Law of Thermodynamics
The application of first law of thermodynamics process led to the establishment of a new property named internal energy (U), the application…