151
PERFORMANCE DATA — 581C
COOLING CAPACITIES — 581C024-060 STANDARD UNITS
581C024 (2 Tons)
Temp (F) Air Entering Evaporator -- CFM/BF
Air Ent 600/0.12 800/0.14 1000/0.18
Condenser Air Entering Evaporator -- Ewb (F)
(Edb) 576267725762677257626772
75 TCG 22.6 24.3 26.7 29 25 25.7 28.1 30.2 26.6 26.8 29 30.9
SHG 21.7 19.5 16.4 13 24 22.9 18.6 14.1 25.6 25.4 20.6 15.1
CMP 1.18 1.19 1.2 1.21 1.19 1.19 1.2 1.21 1.19 1.2 1.21 1.22
85 TCG 21.3 23 25.7 28 24.2 24.7 27.2 29.6 25.9 25.9 27.9 30.2
SHG 20.5 19 16 12.7 23.3 22.4 18.4 14.1 24.9 24.9 20.3 15.1
CMP 1.36 1.37 1.38 1.39 1.38 1.38 1.39 1.4 1.38 1.38 1.39 1.4
95 TCG 19.9 21 24.7 27.2 23.1 23.3 26 28.6 25 24.9 26.9 29.3
SHG 19.1 18.2 15.7 12.4 22.2 21.9 18.1 13.9 24 24 20.2 15.1
CMP 1.56 1.57 1.59 1.6 1.58 1.58 1.59 1.61 1.59 1.59 1.6 1.61
105 TCG 18.4 18.8 23.2 26 21.3 21.3 24.8 27.4 23.9 23.9 25.6 28.2
SHG 17.7 17.3 15.1 12 20.5 20.5 17.7 13.5 23 23 19.9 14.8
CMP 1.78 1.78 1.81 1.82 1.8 1.8 1.82 1.83 1.81 1.81 1.82 1.84
115 TCG 16.6 16.5 20.5 24.7 19.7 19.7 22.4 26 22 22 24.1 26.7
SHG 16 15.9 14.1 11.6 19 19 16.9 13.1 21.1 21.1 19.5 14.5
CMP 2.01 2.01 2.05 2.08 2.05 2.05 2.06 2.08 2.06 2.06 2.07 2.09
125 TCG 15 15 17.7 22.2 17.7 17.7 19.6 24.4 19.7 19.8 20.5 25.2
SHG 14.5 14.5 13.2 10.8 17 17 16 12.7 19 19 18.3 14.1
CMP 2.27 2.27 2.3 2.34 2.3 2.3 2.32 2.35 2.32 2.32 2.33 2.36
581C036 (3 Tons)
Temp (F) Air Entering Evaporator -- CFM/BF
Air Ent 900/0.10 1200/0.13 1500/0.16
Condenser Air Entering Evaporator -- Ewb (F)
(Edb) 57 62 67 72 57 62 67 72 57 62 67 72
75 TCG 32 34.5 38.9 42.8 35.1 37.1 40.9 44.9 38.1 38.5 42.2 45.9
SHG 32 28.9 25 20.4 35.1 33.6 28.3 22.3 38.1 37.4 31.2 23.9
CMP 1.94 1.96 1.98 2 1.96 1.97 1.99 2.01 1.98 1.98 2 2.02
85 TCG 30.9 33.2 37.5 41.4 33.8 34.9 39.4 43.3 36.9 37 40.5 44.3
SHG 30.9 28.3 24.5 19.8 33.8 32.5 27.8 21.8 36.9 36.7 30.7 23.3
CMP 2.19 2.21 2.24 2.26 2.22 2.23 2.25 2.27 2.24 2.24 2.26 2.28
95 TCG 29.5 31.4 35.4 39.7 31.8 32.3 37.7 41.5 35.1 35.2 38.8 42.5
SHG 29.5 27.3 23.6 19.2 31.8 31.2 27.2 21.2 35 35.2 30 22.8
CMP 2.47 2.49 2.52 2.54 2.5 2.51 2.54 2.56 2.53 2.53 2.54 2.56
105 TCG 28 29.5 33 38 29.5 29.5 34.7 39.7 32.3 32.2 36.8 40.8
SHG 28 26.4 22.6 18.6 29.4 29.4 26 20.7 32.3 32.2 29.5 22.5
CMP 2.78 2.79 2.83 2.86 2.81 2.81 2.85 2.87 2.84 2.84 2.86 2.88
115 TCG 26.3 27.1 30.7 35.2 27.6 27.6 31.1 37.6 29.6 29.5 32.9 38.5
SHG 26.3 25.3 21.7 17.7 27.6 27.6 24.5 20 29.6 29.5 27.8 21.9
CMP 3.1 3.11 3.16 3.2 3.15 3.15 3.18 3.22 3.17 3.17 3.2 3.23
125 TCG 24.4 24.7 28.1 32.1 25.5 25.5 27.5 33.7 27 27 28.5 35.8
SHG 24.4 24.1 20.7 16.6 25.5 25.4 22.9 18.8 27 27 26 21.2
CMP 3.45 3.46 3.51 3.56 3.51 3.51 3.53 3.59 3.53 3.53 3.55 3.6
LEGEND NOTES:
1. Direct interpolation is permissible. Do not extrapolate.
2. The following formulas may be used:
Where: hewb = Enthalpy of air entering evaporator coil.
3. The SHC is based on 80 F edb temperature of air entering evapor
a
tor coil.
Below 80 F edb, subtract (corr factor x cfm) from SHC.
Above 80 F edb, add (corr factor x cfm) to SHC.
Correction Factor = 1.10 x (1 – BF) x (edb – 80)
B
F—Bypass Factor
E
db — Entering Dry Bulb
E
wb — Entering Wet Bulb
C
OMP — Compressor Power kw
S
HG — Gross Sensible Capacity (1000 Btuh)
T
CG — C ompressor Cooling Capicity (1000 Btuh)
tldb =t
edb –sensible capacity (Btuh)
1.10 x cfm
tlwb = Wet-bulb temperature corresponding to enthalpy of air
leaving evaporator coil (hlwb)
hlwb =h
ewb –total capacity (Btuh)
4.5 x cfm