Sensible Heat Flow
Sensible heat is dry heat causing change in temperature but not in moisture content
Sensible Heat Flow  SIUnits
The sensible heat flow can be expressed in SIunits (metric) as
Q_{s} = c_{p} ρ q Δt / 3600 (1)
where
Q_{s} = sensible heat flow (kW)
c_{p} = 1.005*  specific heat air (kJ/kg K)
ρ = 1.202*  air density at standard conditions (kg/m^{3})
q = air flow (m^{3}/hr)
Δt = temperature (^{o}C)
* Note that air properties changes with temperature. Interpolate values if necessary.
Sensible Heat Flow  English (Imperial) units
In English (imperial) units the sensible flow heat can be expressed as
Q_{s}= 60 c_{p} ρ q Δt = 1.075 q Δt (2)
where
Q_{s} = sensible heat flow (Btu/hr)
c_{p} = 0.2388  specific heat (Btu/lb^{o}F)
ρ = 0.075  air density at standard conditions (lb/ft^{3})
q = air flow in (ft^{3}/min)
Δt = temperature difference (^{o}F)
Example  Sensible Heat Flow
10000 m^{3}/h of air is transported through a building with the ventilation system. The temperature of the make up air is 0 ^{o}C. The temperature of the room air is 20 ^{o}C.
The sensible heat flow can be calculated as
Q_{l} = (1.005 kJ/kg) (1.202 kg/m^{3}) (10000 m^{3}/h) ((20 ^{o}C)  (0 ^{o}C)) / 3600
= 67 kW
Related Topics

Air Psychrometrics
Moist and humid air calculations. Psychrometric charts and Mollier diagrams. Aircondition systems temperatures, absolute and relative humidities and moisture content in air.
Related Documents

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. 
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. 
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 
Sensible Heat Ratio  SHR
The ratio Sensible Heat (or Cooling) Load to the Total Heat (or Cooling) Load.