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PERFORMANCE DATA — 581C
COOLING CAPACITIES — 581C024-060 STANDARD UNITS (cont)
LEGEND
NOTES:
1. Direct interpolation is permissible. Do not extrapolate.
2. The following formulas may be used:
Where: h
ewb
= Enthalpy of air entering evaporator coil.
3. The SHC is based on 80 F edb temperature of air entering evapo-
rator 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).
581C048 (4 Tons)
Temp (F) Air Entering Evaporator -- CFM/BF
Air Ent 1200/0.05 1600/0.07 2000/0.09
Condenser Air Entering Evaporator -- Ewb (F)
(Edb) 62 67 72 62 67 72 62 67 72
75
TCG 46.3 51.1 55.7 48.8 53.5 58 50.7 54.9 59.1
SHG 39.9 33.8 27.1 46.3 38.6 29.8 50.6 42.7 32
CMP 2.36 2.37 2.38 2.37 2.38 2.39 2.37 2.38 2.39
85
TCG 42.9 49 54 46.2 51.5 56.4 49.2 52.8 57.4
SHG 38.5 33 26.6 45.2 37.9 29.4 49.1 42.2 31.7
CMP 2.69 2.71 2.72 2.71 2.72 2.74 2.72 2.72 2.74
95
TCG 38.7 45.8 51.9 42.6 48.8 54.2 46.8 50.4 55.5
SHG 36.5 31.8 25.9 42.5 37.1 28.9 46.8 41.6 31.4
CMP 3.05 3.08 3.11 3.07 3.1 3.12 3.1 3.11 3.12
105
TCG 34.4 41.1 49.1 39 43.8 51.5 43.3 46.3 52.8
SHG 34.3 30 24.9 39 35.3 28.2 43.3 40.4 30.9
CMP 3.42 3.48 3.53 3.47 3.5 3.54 3.5 3.52 3.54
115
TCG 31.4 36.3 44.7 35.8 38.4 47.3 39.2 40.6 49.5
SHG 31.4 28.1 23.5 35.8 33.3 26.9 39.2 38.1 30.1
CMP 3.85 3.9 3.96 3.9 3.92 3.98 3.93 3.94 4
125
TCG 28.2 31.1 39.8 31.9 33 41.6 35.3 35.4 43.9
SHG 28.1 26.2 21.8 31.9 31.1 25.1 35.3 35.4 28.4
CMP 4.31 4.35 4.42 4.36 4.37 4.44 4.4 4.4 4.46
581C060 (5 Tons)
Temp (F) Indoor Entering Air -- CFM/BF
Outdoor 1500/0.26 1750/.31 2000/.35 2500/.45
Air Ent Indoor Entering Air -- Ewb (F)
(Edb) 57626772576267725762677257626772
75
TCG 57 60.2 66.5 72 60.3 62.3 68.5 73.8 63.2 64.1 69.7 75.6 67.4 67.4 71.8 77.6
SHG 55.3 50.5 42.4 33.5 58.6 55.2 45.7 35.4 61.3 59.5 48.6 37.4 65.5 65.5 54.4 40.7
CMP 3.1 3.11 3.12 3.14 3.11 3.12 3.13 3.15 3.11 3.12 3.13 3.16 3.12 3.12 3.14 3.17
85
TCG 54.1 56.9 64 70.2 58.3 59.7 65.9 72 60.9 61.4 67.3 73.4 65.3 65.2 69.6 75.3
SHG 52.6 49.1 41.4 33 56.6 54.1 44.8 35 59.2 58.4 48 36.9 63.4 63.4 54.4 40.4
CMP 3.5 3.52 3.54 3.56 3.52 3.53 3.54 3.57 3.53 3.54 3.54 3.58 3.54 3.54 3.56 3.59
95
TCG 50.2 53 61.1 67.5 55 55.6 62.9 69.3 58.6 58.6 64.3 70.6 62.8 62.8 66.4 72.7
SHG 48.8 47.4 40.3 32.2 53.4 52.3 43.8 34.2 56.9 56.8 47.2 36.1 61 61 53.4 40
CMP 3.94 3.95 3.99 4.02 3.97 3.97 4.01 4.03 3.99 3.99 4.02 4.03 4.01 4.01 4.02 4.05
105
TCG 47.4 47.9 56.5 64.3 50.9 51 59.5 66.1 54.7 54.8 60.9 67.4 59.9 60 62.9 69
SHG 46 45.2 38.7 31.1 49.5 49.5 42.6 33.2 53.1 53.2 45.9 35.2 58.2 58.3 52.4 38.8
CMP 4.42 4.42 4.48 4.51 4.44 4.44 4.5 4.53 4.47 4.47 4.51 4.54 4.5 4.5 4.52 4.54
115
TCG 43.1 43.2 50.3 60.8 47.3 47.3 52.6 62.6 50.1 50.1 55.6 63.9 56 55.9 58.2 65.4
SHG 41.8 42 36.4 30 45.9 45.9 40.2 32.1 48.7 48.7 44.1 34.2 54.4 54.3 50.8 37.9
CMP 4.92 4.92 4.98 5.05 4.96 4.96 5 5.07 4.98 4.98 5.02 5.08 5.03 5.03 5.05 5.08
125
TCG 39 39 43.9 55.7 42.3 42.3 46.9 58.5 46.1 46.1 48.2 59.7 50.9 50.9 51.3 61.4
SHG 37.9 37.9 34.1 28.3 41.1 41 38.2 30.8 44.8 44.8 41.6 32.9 49.4 49.4 48.2 36.9
CMP 5.47 5.46 5.52 5.62 5.51 5.51 5.55 5.64 5.54 5.54 5.56 5.66 5.59 5.59 5.59 5.66
BF — Bypass Factor
Edb — Entering Dry Bulb
Ewb — Entering Wet Bulb
COMP — Compressor Power kw
SHG — Gross Sensible Capacity (1000 Btuh)
TCG — Compressor Cooling Capicity (1000 Btuh)
t
ldb
=t
edb
–
sensible capacity (Btuh)
1.10 x cfm
t
lwb
= Wet-bulb temperature corresponding to enthalpy of air
leaving evaporator coil (h
lwb
)
h
lwb
=h
ewb
–
total capacity (Btuh)
4.5 x cfm
581C024-060