Carrier 50GL-A - Page 14

14
PERFORMANCE DATA (CONT)
LEGEND BF— Bypass Factor edb— Entering Dry ---Bulb Ewb— Entering Wet---Bulb kW — Total Unit Power Input SHC— Sensible Heat Capacity (1000 Btuh) TC — Total Ca pacity ( 1000 Btuh ) (net) COOLING NOTES: 1. Ratings are net; they account for the effects of the evaporator--- fan motor power and heat. 2. Direct interpolation is permissible. Do not extrapolate. 3. The following formulas may be used:
C
ldb =
C
edb ---
SHC
kW
x 1000
1.23 x L/s
Leaving wet bulb = wet bulb temperature corresponding to enthalpy of air leaving coil (
h
/
wb
).
h
/wb =
h
e w b ---
TC
kW
x 1000
1.20 x L/s
Where
h
ewb
is en thal py of air entering indoor coil.
SHC is based on 26.7 C db temperature of air entering the unit. At any other temperature, correct the SHC read from the table of cooling capacities as follows: Corrected
SHC
kW
=SHC+[1.23x10
--- 3
x ( 1 --- B F ) x ( C
db
--- 26.7) x L/s]
Above 26.7 C, SHC correction is positive; add it to SHC. Below 26.7 C, SHC correction is negative; subtract it from SHC.
50GL--A