HVAC 2 min read
Room Sensible Heat Factor (RSHF)
The room sensible heat factor (RSHF) represents the psychrometric process of the supply air within the conditioned space. Room Sensible…
THE LATEST THINKING
Every story.
Browse our articles in publication order, with new stories added automatically.
HVAC 2 min read
APPLICATION OF PSYCHROMETRICS TO COOLING COIL SIZING
Sensible Heat V/s Latent Heat Sensible Heat is the heat content causing an increase in dry-bulb temperature. Latent Heat is…
HVAC 1 min read
WINTER MODE HEATING PROCESS
The schematic diagram below shows a typical plant system for winter heating.
HVAC 1 min read
Bypass Factor
In most cooling applications, the air leaving the cooling coil is not entirely saturated since some air does not come…
HVAC 1 min read
SUMMER MODE AIR CONDITIONING PROCESS
A basic air-conditioning schematic for summer mode is shown below: Here, return air from the conditioned space (2) mixes with…
HVAC 2 min read
PSYCHROMETRIC PROCESS AS APPLICABLE TO DIFFERENT REGIONS
There are generally four extreme climatic conditions that may involve an airconditioning system. 1. Hot and Humid (e.g. Miami) where both…
HVAC 1 min read
Mixing Process (Steady Flow)
When two streams of air with different properties and flow rates are mixed, the properties of the resulting mixture (enthalpy,…
HVAC 1 min read
Adiabatic Processes
The term ‘Adiabatic’ simply means without energy loss or gain. This refers mainly to the processes of evaporative cooling and…
HVAC 3 min read
Evaporative Cooling
Evaporative cooling is an adiabatic process, that is, there is no net heat loss or gain. When hot air stream…
HVAC 2 min read
Heating and Dehumidification (Chemical Dehydration)
Heating and Dehumidification, also referred to as “chemical dehydration” is seeing increasing use in modern air-conditioning particularly in industrial environment.…
HVAC 2 min read
Cooling and Dehumidifying
When air is cooled below the dew point temperature, Tdewpoint, condensation occurs and moisture is removed from the air stream.…
HVAC 2 min read
Governing Equation for Heating and Humidification
If the condition of the air is changing from state 1 to state 2, consider that the intersection of a…
