Weather Data - Hours available for evaporative cooling:


 Location:  Phoenix, AZ     Elev: 1101    Lat: 33/33N  Long:112/22W

Mean Frequency of occurrence of Dry Bulb Temperature with Mean Coincident Wet Bulb Temperature for each Dry Bulb Temperature Range:

                               ASHRAE  design Dry Bulb and Mean Coincident Wet Bulb:
                          
   1% Scale:    2.5% Scale:    5% Scale:            Design Wet Bulb:
                           Db       Wb       Db      Wb        Db      Wb           1%     2.5%     5%
                           109       71       107      71        105      71            76        75         75
  
Average number of hours within each temperature range and discharge temp. (see notes):

January - April Weather Data

Temp Range: Deg (f) January February March April Total
Low High Mean Hours Wb Tout Hours Wb Tout Hours Wb Tout Hours Wb Tout  
115 120 117.5                          
110 114 112                          
105 109 107                          
100 104 102                          
95 99 97                   6 62 63.8 6.0
90 94 92             2 59 60.7 22 60 61.6 24.0
85 89 87       1 60 61.4 9 58 59.5 49 58 59.5 59.0
80 84 82       7 58 59.2 31 59 57.3 68 56 57.3 106.0
75 79 77 4 54 55.2 20 55 56.1 55 55 55.2 84 54 55.2 163.0
70 74 72 24 52 53.0 46 53 54.0 72 53 53.0 91 52 53.0 233.0
65 69 67 56 50 50.9 71 51 52.1 91 51 50.9 108 50 50.9 326.0
60 64 62 80 49 49.7 95 49 49.7 112 48 48.7 112 48 48.7 399.0
55 59 57 110 47 47.5 117 47 47.5 124 47 47.5 93 46 46.6 444.0
50 54 52 132 44 44.4 120 44 44.4 122 44 44.4 55 43 43.5 429.0
45 49 47 128 40 40.4 98 41 41.3 80 41 41.3 26 40 40.4 332.0
40 44 42 109 36 36.3 62 36 36.3 35 37 37.3 5 37 37.3 211.0
35 39 37 62 32 32.3 29 33 33.2 12 33 33.2       103.0
30 34 32 32 28 28.2 6 28 28.2 2 28 28.2       40.0
Total hours Temp out over 40(f) 534   575   698   714 Total hours for this period 2521.0

Note: 1.  Db = Dry Bulb(f) temperature, Wb = Mean coincident wet bulb temp (f).  Tout = Discharge Temperature (f).   Only hours where discharge temp is over 400(f) is included in total hours available for evaporative cooling.

May - August Weather Data

Temp Range: Deg (f) May June July August Total
Low High Mean Hours Wb Tout Hours Wb Tout Hours Wb Tout Hours Wb Tout  
115 120 117.5       1 70 72.4 2 73 75.2       3.0
110 114 112       12 70 72.1 16 72 74.0 3 74 75.9 31.0
105 109 107 4 66 68.1 41 69 70.9 69 72 73.8 31 73 74.7 145.0
100 104 102 18 65 66.9 65 67 68.8 117 71 72.6 89 73 74.5 289.0
95 99 97 53 63 64.7 90 65 66.6 119 71 72.3 115 72 73.3 377.0
90 94 92 74 61 62.6 97 63 64.5 135 70 71.1 128 71 72.1 434.0
85 89 87 86 59 60.4 103 62 63.3 139 68 69.0 146 71 71.8 501.0
80 84 82 97 57 58.3 103 59 60.2 96 67 67.8 133 70 70.6 429.0
75 79 77 108 55 56.1 88 57 58.0 42 66 66.6 78 69 69.4 316.0
70 74 72 101 53 54.0 64 54 54.9 7 60 60.6 18 64 64.4 190.0
65 69 67 90 51 52.1 37 52 53.0 1 54 54.7 3 64 54.7 131.0
60 64 62 66 49 49.7 14 49 49.7       1 50 50.6 81.0
55 59 57 35 46 46.6 2 46 46.6             37.0
50 54 52 11 44 44.4                   11.0
45 49 47 2 38 38.5                   2.0
40 44 42                          
35 39 37                          
30 34 32                          
Total hours Temp out over 40(f) 743   717   743   745 Total hours for this period 2977.0

September - December Weather Data

Temp Range: Deg (f) September October November December Total
Low High Mean Hours Wb Tout Hours Wb Tout Hours Wb Tout Hours Wb Tout  
115 120 117.5                          
110 114 112                          
105 109 107 9 71 72.8                   9.0
100 104 102 40 70 71.6                   40.0
95 99 97 70 69 70.4 10 66 67.6             80.0
90 94 92 98 67 68.3 36 64 65.4             134.0
85 89 87 105 66 67.1 66 62 63.3 5 59 60.4       176.0
80 84 82 121 65 65.9 78 60 61.1 18 57 58.3 1 54 55.4 218.0
75 79 77 114 64 64.7 89 59 59.9 44 56 57.1 9 54 55.2 256.0
70 74 72 89 60 60.6 107 57 57.8 65 54 54.9 26 52 53.0 287.0
65 69 67 47 56 56.6 122 55 55.6 85 53 53.7 48 51 51.8 302.0
60 64 62 20 53 53.5 111 52 52.5 113 51 51.6 77 49 49.7 321.0
55 59 57 5 49 49.4 80 48 48.5 134 48 48.5 101 47 47.5 320.0
50 54 52 1 49 49.2 32 44 44.4 124 44 44.4 128 44 44.4 285.0
45 49 47       10 41 41.3 80 41 41.3 149 41 41.3 239.0
40 44 42       2 36 36.3 39 37 37.3 126 37 37.3 169.0
35 39 37       1 30 30.4 13 34 34.2 62 33 33.2 76.0
30 34 32             3 31 31.1 14 29 29.2 17.0
Total hours Temp out over 40(f) 719   741   668   539 Total hours for this period 2666.0
Total hours available for evaporative cooling 8164.0

Data published by Premier Industries, Inc., in part from data contained in EcoDyne's Weather Data Handbook no longer in print.  Premier Industries, Inc., provides these data for informational use only.  All reasonable precautions have been taken to maintain integrity in these data however  Premier Industries will not be responsible for it's accuracy.  Any responsibility for the use of this information shall be borne by the user.