# 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 = Q_{sr}/ Q_{tr}(1)

where

RSHF= room sensible heat factor

Q_{sr}= sensible heat load in room (kW, Btu/hr)

Q_{tr}= total heat load in room (kW, Btu/hr)

(1) can be modified to:

RSHF = c_{p}(t_{r}- t_{i}) / (h_{r}- h_{i})(2)

where

c_{p}= specific heat air (kJ/kg.^{o}C)

t_{r}= room temperature (^{o}C)

t_{i}= inlet temperature (^{o}C)

h_{r}= room enthalpy (kJ/kg)

h_{i}= 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