Sensible heat load - heating or cooling - and required air volume to keep temperature constant at various temperature differences between entering air and room air are indicated in the chart below:
Moisture is introduced into a structure through:
Other latent heat gain is taken care of by the HVAC equipment before the air reaches the rooms (system gain).
Latent heat load - humidifying and dehumidifying - and required air volume to keep temperature constant at various temperature differences between entering air and room air are indicated in the chart below:
Air Conditioning systems - heating, cooling and dehumidification of indoor air for thermal comfort.
Latent and sensible cooling and heating equations - imperial units.
Classification of dehumidifiers.
The Great Sensible Heat Factor is the ratio sensible to total heat in a cooling coil.
Equivalent heat index vs. air temperature and relative humidity - in degrees Fahrenheit and Celsius.
Heat loss from electrical equipment like switch-gear, transformers and variable frequency drives.
Energy required to heat up a substance.
Heat gain from persons in air conditioned spaces - in btu/hr.
Enthalpy change and temperature rise when heating humid air without adding moisture.
Commonly used HVAC abbreviations.
Latent heat is the heat when supplied to or removed from air results in a change in moisture content - the temperature of the air is not changed.
Room Sensible Heat Factor - RSHF - is defined as the sensible heat load divided by the total heat load in a room
Sensible heat is dry heat causing change in temperature but not in moisture content
The ratio Sensible Heat (or Cooling) Load to the Total Heat (or Cooling) Load.
Calculate steam heated air systems.
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