| Performance Adjustment Factors Table 17-1— Enthalpy of Saturated AIR
| 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 17-2 — Cooling
Capacity Altitude CorrectionFactors
| |
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 |
115F |
114F |
113F |
112F |
111F |
110F |
109F |
108F |
Note:
SHR = Sensible Heat Ratio
| Air Density
Ratio
(Density at New Air
Density Condition Std.) |
Figure 17-1 — Air
Density Ratios
|
Table 17-3 — Gas Heating Capacity
Altitude Correction Factors
| |
Altitude (Ft.) |
| Sea Level To 2000 |
2001 To 2500 |
2501 To 3500 |
3501 To 4500 |
4501 To 5500 |
5501 To 6500 |
6501 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. |
