Performance adjustment factors, Performance adjustment factors 17 – Trane RT-DS-10 User Manual
Page 17
17
Performance
Adjustment
Factors
Table 17-2 Cooling Capacity Altitude Correction Factors
Altitude ft. (m)
Sea Level
1000 (304.8)
2000 (609.6)
3000 (914.4)
4000 (1219.2)
5000 (1524.0)
6000 (1828.8)
7000 (2133.6)
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 (46.1°C) 114°F (45.6°C)
113°F (45.0°C)
112°F (44.4°C)
111°F (43.9°C)
110°F (43.3°C)
109°F (42.8°C)
108°F (42.2°C)
Note:
SHR = Sensible Heat Ratio
Table 17-3 Gas Heating Capacity Altitude Correction Factors
Altitude ft. (m)
Sea Level To 2000
200 To 2500
2501 To 3500
3501 To 4500
4501 To 5500
5501 To 6500
6501 To 7500
(Sea Level To 609.6) (609.9 To 762.0)
(762.3 To 1066.8) (1067.1 To 1674.4) (1371.9 To 1675.4) (1676.7 To 1981.2) (1981.5 To 2286.0)
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.
Figure 17-1 Air Density Ratios
Table 17-1 Enthalpy of Saturated Air
Wet Bulb Temperature
°F
°C
Btu Per Lb.
40
4.4
15.23
41
5.0
15.70
42
5.5
16.17
43
6.1
16.66
44
6.7
17.15
45
7.2
17.65
46
7.8
18.16
47
8.3
18.68
48
8.9
19.21
49
9.4
19.75
50
10.0
20.30
51
10.6
20.86
52
11.1
21.44
53
11.7
22.02
54
12.2
22.62
55
12.8
23.22
56
13.3
23.84
57
13.9
24.48
58
14.4
25.12
59
15.0
25.78
60
15.6
26.46
61
16.1
27.15
62
16.7
27.85
63
17.2
28.57
64
17.8
29.31
65
18.3
30.06
66
18.9
30.83
67
19.4
31.62
68
20.0
32.42
69
20.6
33.25
70
21.1
34.09
71
21.7
34.95
72
22.2
35.83
73
22.8
36.74
74
23.3
37.66
75
23.9
38.61