Carrier 42C Series Product Data page 23

ENTHALPY AT SATURATION
ENTHALPY AT
TEMPERATURE SATURATION
(F) (Btu per lb.
of dry air)
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
ALTITUDE COOLING CORRECTION FACTORS
ELEVATION (ft) TOTAL HEAT
1000 .990
2000 .980
3000 .970
4000 .960
5000 .940
6000 .930
7000 .920
8000 .910
9000 .900
AIRFLOW CORRECTION FACTORS
CFM RATIO
TOTAL (Ct)
(Actual/Base)
1.40
1.35
1.30
1.25
1.20
1.15
1.10
1.05
1.00
0.95
0.90
0.85
0.80
0.75
0.70
0.65
0.60
0.55
0.50
0.45
0.40
0.35
0.30
0.25
LEGEND
CFM — Cubic Feet per Minute
Cs — Sensible Airflow Correction Factor
Ct — Total Airflow Correction Factor
ESP — External Static Pressure
TEMPERATURE
(F)
15.230 60
15.697 61
16.172 62
16.657 63
17.149 64
17.650 65
18.161 66
18.680 67
19.211 68
19.751 69
20.301 70
20.862 71
21.436 72
22.020 73
22.615 74
23.22 75
23.84 76
24.48 77
25.12 78
25.78 79
80
SENSIBLE HEAT
.960
.930
.896
.864
.830
.800
.770
.750
.730
SENSIBLE (Cs)
1.25 1.26
1.22 1.23
1.19 1.20
1.16 1.17
1.13 1.14
1.10 1.11
1.07 1.08
1.04 1.04
1.00 1.00
0.97 0.97
0.94 0.93
0.90 0.89
0.86 0.85
0.82 0.81
0.78 0.77
0.74 0.72
0.70 0.67
0.66 0.62
0.62 0.57
0.58 0.52
0.53 0.47
0.48 0.42
0.43 0.38
0.38 0.33
ENTHALPY AT
SATURATION
(Btu per lb
of dry air)
26.46
27.15
27.85
28.57
29.31
30.06
30.83
31.62
32.42
33.25
34.09
34.95
35.83
36.74
37.66
38.61
39.57
40.57
41.58
42.62
43.69
STEAM PRESSURE CORRECTION FACTORS
ENTERING AIR
TEMP (F)
40
50
60
70
NOTE: Steam Heating Capacity (Btuh) = Base Capacity x Pressure
Correction Factor x SH (SH value found in Cooling Capacity Correction
Factors table on page 60).
STEAM PRESSURE (PSIG)
2 5
1.202 1.265
1.134 1.196
1.067 1.125
1.000 1.054
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