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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

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