Performance adjustment factors – Trane RT-PRC007-EN User Manual
Page 18
RT-PRC007-EN
18
Performance
Adjustment
Factors
Wet Bulb Temperature
Btu Per Lb.
40
15.23
41
15.70
42
16.17
43
16.66
44
17.15
45
17.65
46
18.16
47
18.68
48
19.21
49
19.75
50
20.30
51
20.86
52
21.44
53
22.02
54
22.62
55
23.22
56
23.84
57
24.48
58
25.12
59
25.78
60
26.46
61
27.15
62
27.85
63
28.57
64
29.31
65
30.06
66
30.83
67
31.62
68
32.42
69
33.25
70
34.09
71
34.95
72
35.83
73
36.74
74
37.66
75
38.61
Table PD-2 — Cooling Capacity Altitude Correction Factors
Altitude (Ft.)
Sea Level
1000
2000
3000
4000
5000
6000
7000
Cooling Capacity
Multiplier
1.00
0.99
0.99
0.98
0.97
0.96
0.95
0.94
KW Correction
Multiplier
(Compressors)
1.00
1.01
1.02
1.03
1.04
1.05
1.06
1.07
SHR Correction
Multiplier
1.00
.98
.95
.93
.91
.89
.87
.85
Maximum
Condenser
Ambient
115 F
114 F
113 F
112 F
111 F
110 F
109 F
108 F
Note:
SHR = Sensible Heat Ratio
Figure PD-1 — Air Density Ratios
Altitude/Temperature Correction
Air Density
Ratio (Density
at New
Air Density)
Condition/Std.
Rooftop Leaving Air Temperature (degrees F)
Table PD-3 — Gas Heating Capacity Altitude Correction Factors
Altitude (Ft.)
Sea Level
2001
2501
3501
4501
5501
6501
To 2000
To 2500
To 3500
To 4500
To 5500
To 6500
To 7500
Capacity
Multiplier
1.00
.92
.88
.84
.80
.76
.72
Note:
Correction factors are per AGA Std 221.30 — 1964, Part VI, 6.12. Local codes may supersede.
Table PD-1— Enthalpy of Saturated AIR