Room Sensible Heat Factor - RSHF
Room Sensible Heat Factor - RSHF - is defined as the sensible heat load divided by the total heat load in a room
The Room Sensible Heat Factor - RSHF - expresses the ratio between sensible heat load and total heat load in a room. It can be expressed as:
RSHF = Qsr / Qtr (1)
where
RSHF = room sensible heat factor
Qsr = sensible heat load in room (kW, Btu/hr)
Qtr = total heat load in room (kW, Btu/hr)
(1) can be modified to:
RSHF = cp (tr - ti) / (hr - hi) (2)
where
cp = specific heat air (kJ/kg.oC)
tr = room temperature (oC)
ti = inlet temperature (oC)
hr = room enthalpy (kJ/kg)
hi = inlet enthalpy (kJ/kg)
Example - Room Sensible Heat Factor - RSHF
The sensible heat generated within a room is 4 kW. The latent heat generated is 1.4 kW.
The Room Sensible Heat Factor can be calculated as:
RSHF = (4 kW) / ((4 kW) + (1.4 kW))
= 0.75
Related Topics
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Air Psychrometrics
Moist and humid air calculations. Psychrometric charts and Mollier diagrams. Air-condition systems temperatures, absolute and relative humidities and moisture content in air.
Related Documents
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Air - Thermophysical Properties
Thermal properties of air at different temperatures - density, viscosity, critical temperature and pressure, triple point, enthalpi and entropi, thermal conductivity and diffusivity and more. -
Cooling and Heating Equations
Latent and sensible cooling and heating equations - imperial units. -
Cooling Load - Latent and Sensible Heat
Latent and sensible cooling loads to consider when designing HVAC systems. -
Great Sensible Heat Factor - GSHF
The Great Sensible Heat Factor is the ratio sensible to total heat in a cooling coil. -
Heat Index
Equivalent heat index vs. air temperature and relative humidity - in degrees Fahrenheit and Celsius. -
Human Heat Gain
Heat gain from persons in air conditioned spaces - in btu/hr. -
Indoor Relative Humidity vs. Outdoor Relative Humidity and Temperature
Recommended indoor relative humidity vs. outdoor relative humidity and temperature. -
Latent Heat Flow
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. -
Metabolic Heat Gain from Persons
Human metabolic heat gain in air conditioned rooms. -
Sensible Heat Flow
Sensible heat is dry heat causing change in temperature but not in moisture content -
Sensible Heat Ratio - SHR
The ratio Sensible Heat (or Cooling) Load to the Total Heat (or Cooling) Load.
