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Evaporative Cooling
Evaporative cooling is an adiabatic process, that is, there is no net heat loss or…
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Heating and Dehumidification (Chemical Dehydration)
Heating and Dehumidification, also referred to as “chemical dehydration” is seeing increasing use in modern…
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Cooling and Dehumidifying
When air is cooled below the dew point temperature, Tdewpoint, condensation occurs and moisture is…
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Governing Equation for Heating and Humidification
If the condition of the air is changing from state 1 to state 2, consider…
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Humidification (Heating or Cooling)
This is the process of introducing moisture into the airstream. In winter, humidification frequently is…
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Governing Equation for Sensible Heating and Cooling
Example Calculate the amount of sensible heat that must be added to 100lb of air…
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Sensible Heating
In HVAC systems, air is typically heated by passing it over a heating coil or…
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Sensible Cooling
Air dew point temperature Tdewpoint is the temperature when air is 100% saturated and water begins…
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Cooling and Heating
In HVAC systems, air is typically cooled by passing it over a cooling coil. Most…
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Measuring Vapour Pressure
Measuring vapour pressure is very difficult without complex laboratory instrumentation. However, it can be relatively…