Posted inThermodynamics
Psychrometric chart
A Psychrometric chart graphically represents the thermodynamic properties of moist air. Standard psychrometric charts are…
Posted inThermodynamics
Humid specific heat
From the equation for enthalpy of moist air, the humid specific heat of moist air…
Posted inThermodynamics
Enthalpy
Enthalpy is the measure of heat energy in the air due to sensible heat or…
Posted inThermodynamics
Important psychrometric properties
Dry bulb temperature (DBT) is the temperature of the moist air as measured by a standard…
Posted inThermodynamics
Methods for estimating properties of moist air
In order to perform air conditioning calculations, it is essential first to estimate various properties…
Posted inThermodynamics
Amagat’s & Dalton’s Law
Amagat’s Law The volume of an ideal gas mixture (V) is equal to the sum…
Posted inThermodynamics
MASS AND MOLE FRACTION
If we want to deal with the problems of gas mixture, two laws should always…
Posted inHVAC
Coil Load Calculation Example
Determine the minimum cooling coil load and required chilled water flow for a system serving…
Posted inHVAC
Psychrometric representation for blow-through AHU
Summarizing, draw-through units typically require 10% more supply air than blow through systems for the…
Posted inHVAC
Psychrometric Representation for Draw-through AHU Arrangement
We have learnt that when both the RSHF and GSHF ratio lines are plotted on…