Rapid 4044 - Table 12: Air Density Ratio

4000-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
20 of 154
Table 12: Air Density Ratio
NOTE: Table to be used when calculating total tonnage of cooling adjusted for elevation.
Temperature
(°F)
Density Ratio for Stated Elevation (ft/in HG)
0/
29.92
1,000/
28.86
2,000/
26.82
3,000/
26.82
4,000/
25.84
5,000/
24.90
6,000/
23.98
7, 0 0 0 /
23.09
8,000/
22.22
9,000/
21.39
10,000/
20.58
68° 1.00 0.97 0.93 0.90 0.87 0.84 0.80 0.77 0.75 0.72 0.69
70° 1.00 0.96 0.93 0.90 0.86 0.83 0.80 0.77 0.74 0.71 0.69
72° 1.00 0.96 0.93 0.89 0.86 0.83 0.80 0.77 0.74 0.71 0.69
74° 0.99 0.96 0.92 0.89 0.86 0.83 0.80 0.77 0.74 0.71 0.68
76° 0.99 0.95 0.92 0.89 0.85 0.82 0.79 0.76 0.73 0.71 0.68
78° 0.99 0.95 0.92 0.88 0.85 0.82 0.79 0.76 0.73 0.70 0.68
80° 0.98 0.95 0.91 0.88 0.85 0.82 0.79 0.76 0.73 0.70 0.68