Assumptions:
6000 BTU per minute waste heat
Specific heat of air = 0.01988 BTU per cubic foot per deg  
20% humidity 100 degree day
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..........10...15...20...25...30...35...40...45...50...55... 60
---------------------------------------------------------------
  80 MPH  620  413  310  248  207  177  155  138  124  113  103
  85 MPH  583  389  292  233  194  167  146  130  117  106   97
  90 MPH  551  367  275  220  184  157  138  122  110  100   92
  95 MPH  522  348  261  209  174  149  130  116  104   95   87
 100 MPH  496  331  248  198  165  142  124  110   99   90   83
 105 MPH  472  315  236  189  157  135  118  105   94   86   79
 110 MPH  451  301  225  180  150  129  113  100   90   82   75
 115 MPH  431  287  216  172  144  123  108   96   86   78   72
 120 MPH  413  275  207  165  138  118  103   92   83   75   69
 125 MPH  397  264  198  159  132  113   99   88   79   72   66
 130 MPH  381  254  191  153  127  109   95   85   76   69   64
 135 MPH  367  245  184  147  122  105   92   82   73   67   61
 140 MPH  354  236  177  142  118  101   89   79   71   64   59
 145 MPH  342  228  171  137  114   98   85   76   68   62   57
 150 MPH  331  220  165  132  110   94   83   73   66   60   55