Design Dry Bulb Temperature
40 for critical air coolers
36 for non-critical air coolers
Design Wet Bulb Temperature
29
Maximum Ambient Temperature
44
Maximum Design Temperature
60 for equipment and piping not exposed to direct solar radiation,
Maximum Temperature for Solar Radiation
75
Minimum Design Temperature
-40 for frost protection
Barometric Pressure
1013 mbar
Relative Humidity (yearly average)
68%
Maximum Relative Humidity
85% (coldest month)
Minimum Relative Humidity
33% (hottest month)
Maximum frequency/duration
43 days/year
Average Solids Load in Air
26 mg/rn3 solids
Maximum Solids Load in Air
240 mg/m3 solids at 3m
50 mg/rn3 solids at 6m
Maximum Annual Rainfall
200
Average Annual Rainfall
160
Maximum Rainfall for 10 min
25
Maximum Rainfall for 30 min
40
Maximum Rainfall for 60 min
50
Snow Levels
50 to 200
Snow Load
0.5 kN/m2
Ice Storms
Occur periodically
Ground Water Level
-0.7 to -2.0 meters
Freezing Depth
1.5m (top of pipe)
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