Справочник Пользователя для Carrier 50XT
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PERFORMANCE DATA (CONT)
Multiplication Factors
Heater kW
Rating
Voltage Distribution
V/3/60
Multiplication Factor
240
200
.69
208
.75
230
.92
240
1.00
LEGEND
BF— Bypass Factor
edb— Entering Dry--Bulb
edb— Entering Dry--Bulb
Ewb— Entering Wet--Bulb
kW — Total Unit Power Input
kW — Total Unit Power Input
ldb— Leaving Dry--Bulb
lwb— Leaving Wet--Bulb
SHC— Sensible Heat Capacity (1000 Btuh)
SHC— Sensible Heat Capacity (1000 Btuh)
TC — Total Capacity (1000 Btuh) (net)
*At 75°F (23.8°C) entering dry bulb (Tennessee Valley Authority
*At 75°F (23.8°C) entering dry bulb (Tennessee Valley Authority
[TVA] rating conditions); all other at 80°F (26.6°C) entering dry
bulb.
COOLING NOTES:
COOLING NOTES:
1. Ratings are net; they account for the effects of the evaporator
fan motor power and heat.
fan motor power and heat.
2. Direct interpolation is permissible. Do not extrapolate.
3. The following formulas may be used:
Example: 15.0 kW (at 240v) heater on 208v
= 15.0 (.75 mult factor)
= 11.25 capacity at 208v
Sensible capacity (Btuh)
1.10 x cfm
1.10 x cfm
t
ldb =
t
edb
--
Wet---bulb temperature corresponding to enthalpy
air leaving evaporator coil (
air leaving evaporator coil (
h
lwb)
t
lwb =
total capacity (Btuh)
4.5 x cfm
4.5 x cfm
h
lwb =
h
ewb ---
Where:
h
ewb = Enthalpy of air entering evaporator coil
4. The SHC is based on 80_F (26.6_C) edb temperature of air
entering evaporator coil. Below 80_F (26.6_C) edb, subtract (corr
entering evaporator coil. Below 80_F (26.6_C) edb, subtract (corr
factor x cfm) from SHC.
Above 80_F (26.6_C) edb, add (corr factor x cfm) to SHC.
Above 80_F (26.6_C) edb, add (corr factor x cfm) to SHC.
Correction Factor = 1.10 x (1 + BF) x (edb + 80).
5. Integrated capacity is maximum (instantaneous) capacity less the
effect of frost on the outdoor coil and the heat required to defrost it.
5. Integrated capacity is maximum (instantaneous) capacity less the
effect of frost on the outdoor coil and the heat required to defrost it.
50X
T