Document RyKj4gbNzBKa40YEk3zB21a7

HEATING VENTILATING AIR CONDITIONING CUIDE 1943 , Table 1. Constants for Determining the Capacity of BIow-Through Type Unit Heaters for Various Steam Pressures and Temperatures of Entering. Air (Based on Steam Pressure of 2 lb Gage and Entering Air Temperature of 80 F) Steam Pressure Lb per 89 In. .0 -10 1.538 0* 1.446 10' 1.369 20 1.273 2 1.585 1.495 1.405 1.320 s . 1.640 1.550 1.456 1.370 10 1.730 1.639 T.545 1.460 15 .1.799 1.708 1.614 1.525 20 . 1.861 1.769 1.675 1.584 30 1.966 1.871 1.775 1.684 .40 2.058 1.959 ' 11862 1.771 50 2.134 2.035 1.936 . 1.845 60 2.196 2.094 1.997 1.902 70 2.256 2.157 2.057 . 1.961 75. 2.283 . 2.183.. 2.085 1.990 80 2.312 2.211v 2;il2 2.015 . 90 2.361 2.258' 2.159. 2.063 .100 2.409 2.307 2.204 . 2,108 Temperature op Eimmma Am 30 1.191 . 40" 1.110 50" 1.034 .1.237 1.155 . H078 1.289 1.206 1.127 1.375 1.290 1.211 1.441 1.335 . 1.275 1.498 1.416 1.333 1.597 , 1.509 ' 1.429 1.683. 1-596 1.511 1.755 1.666 1.582 1.811 1.725 1.640 1.872 1.782 1.696 1.896 1.808 1.721 1.925 1.836 1.748 1.968 . 1.880 1.792 2.015 1.927 11836 60" 0.956 1.000 1.050 1.131 1.194 1.251 1.346 1.430 1.498 1.555 1.610 1.635 1.660 1.705 1.749 70 0.881 80" 0.809 0.926 0.853 0.974 0.901 1.056 0.982 1.117 1.174 ` 1.043 .1.097 1.266 . ...1.190 1.349 1.270 1.416 1.338 1.472 v 1.393 1.527 1.44.7 1.552 1.472 1.577 1.497 1.621 1.541 1.663 1.581 90" 0.739 0.782 0.829. 0.908 0.970 1.024 1.115 1.194 1.262 1.314 1.368 1.392 1.418 1.461 1.502 100" 0.671 0.713 0.760 0.838 0.897 0.952 1.042 1.119 1.187 1.239 1.293 1.316 1.342 1.383 1.424 Note: To determine capacity at any steam pressure and entering temperature, multiply constant from table by rated capacity at 60 F entering and 2 lb pressure. I CHAPTER 22. UNIT HEAtERS, UNIT VENTILATORS, UNIT HUMIDIFIERS Table 2. Constants for Determining the Capacity of Draw-THROUGH Type Unit Heaters for. Various Steam Pressures and Temperatures of Entering Air (Based on Steam Pressure of 8 lb Gage and Entering Air Temperature of 60 F) Stbau Pressurb Lb per 84 In. ;0 .2 5 10 15 20 30 40 . 50 . 60 . 70 . 75 80 . 90 100 ` -10 1.483 1.520 1.565 1.637 1.688 1.728 1.803 . 1.864 1.927 , ,1.9732.018 2.043 2.064 2.102 2.150 0" 1.405 1.442 1.485 1.558 1.6i0 1.649 1.725 1.787 1.850 1.897 1,943 . 1.970 1.988 2.028, 2.071 10" ' 1.329 1.363 1.410 1.480 .1.533 1.572 1.648 1.710 1.773 1.820 ' 1.869 1.895 1.914 ,1.951 1.994 20" 1.253 1.290 1.334. 1.403 1.458 1.498 1.572 1.637 1.700 1.748 1.795 . 1.822" ,1.841 1.878 1.919 Tbhpbraturb op Entering Am 30" 11178 40" 1,105 50" . 11032 1.215 1.141 i:069 1.260 1.187 1.114 1.328 ,1.253 1.182 1.382 1:310 1.239 1,421 1.350 1.278 1.497 1.423 1.352 ' 1.563 1.491 1.420 1.628" .1.554 1.483 1.673 1.601 . 1.531 1.722 1.651 1.582 , 1.750 1.680 1.609 1.770 1:698 1.629 1.804 ' 1.732 1.661 1.845 1.770 ' 1.700 60" 0.962 1.000 1.045 1.112 1.168 1.208 1.281 1.350 1.416 1.463 1,512 1.540 1.560 1.590 1.630 70" 0.892 0.930 0.975 1.042 1.099 1.138 1.212 1.282 1.347 1.394 1.443 1.471 1.491 1.523 1.560 80" 0.822. 90" 0.754 100" 0.688 0.861 0.792 0.728 ' 0.906 0.838 0.771' 0.973 0.903 0.838 1.028 0.960 0.895 1.070 1.002 0,936 1.145 1,078 1,010 1.215 1.148 1.081 1.278 1.211 1.145 1.325 1.260 1.194 1.377 1.310 1.243 , 1.402 1.333 1.268 .1.422 1.354 1.288 1.457 1.387 ,1.321 1.492 " 1.425 ' 1,359 Note:'- To determine capacity at any steam pressure and entering temperature, multiply constant from table by rated capacity, at 60 F entering and 2 lb pressure.