Machinery's Handbook, 31st Edition
2818 Work REQUIRED TO COMPRESS AIR Table 38. Horsepower Required to Compress Air, Three-stage Compression Horsepower required for compressing one cubic foot of free air per minute (isothermally and adiabatically) from atmospheric pressure (14.7 pounds per square inch) to various gage pressures. Three-stage Compression, initial temperature of air, 60 ° F, jacket-cooling not considered. Isothermal Compression Adiabatic Compression
1.98 14.4-42.9 30.30 0.132 33.30
38.30 46.50 52.00 56.60 60.70 63.80 66.90 69.40 71.70 74.75 76.90 78.15 79.85 81.40 83.25 84.90 86.00 87.50 88.80 90.10 91.10 92.20 93.15 94.30 95.30 96.60 97.30 98.20 98.80 99.85
0.145 0.167 5.23 0.175 0.202 5.92 0.196 0.226 6.67 0.214 0.246 6.96 0.229 0.264 7.28 0.242 0.277 7.64 0.253 0.292 8.33 0.263 0.302 8.36 0.273 0.314 8.38 0.283 0.326 8.80 0.291 0.334 8.86 0.296 0.340 9.02 0.303 0.348 9.18
100 114.7 7.8
150 164.7 11.2 2.24 18.2-59.0 35.59 0.155 40.30 200 214.7 14.6 2.44 21.2-73.0 39.50 0.172 45.20 250 264.7 18.0 2.62 23.8-86.1 42.70 0.186 49.20 300 314.7 21.4 2.78 26.1-98.7 45.30 0.197 52.70 350 364.7 24.8 2.92 28.2-110.5 47.30 0.206 55.45 400 414.7 28.2 3.04 30.0-121.0 49.20 0.214 58.25 450 464.7 31.6 3.16 31.8-132.3 51.20 0.223 60.40 500 514.7 35.0 3.27 33.4-142.4 52.70 0.229 62.30 550 564.7 38.4 3.38 35.0-153.1 53.75 0.234 65.00 600 614.7 41.8 3.47 36.3-162.3 54.85 0.239 66.85 650 664.7 45.2 3.56 37.6-171.5 56.00 0.244 67.90 700 714.7 48.6 3.65 38.9-180.8 57.15 0.249 69.40 750 764.7 52.0 3.73 40.1-189.8 58.10 0.253 70.75 800 814.7 55.4 3.82 41.4-199.5 59.00 0.257 72.45 850 864.7 58.8 3.89 42.5-207.8 60.20 0.262 73.75 900 914.7 62.2 3.95 43.4-214.6 60.80 0.265 74.80 950 964.7 65.6 4.03 44.6-224.5 61.72 0.269 76.10 1000 1014.7 69.0 4.11 45.7-233.3 62.40 0.272 77.20 1050 1064.7 72.4 4.15 46.3-238.3 63.10 0.275 78.10 1100 1114.7 75.8 4.23 47.5-248.3 63.80 0.278 79.10 1150 1164.7 79.2 4.30 48.5-256.8 64.40 0.281 80.15 1200 1214.7 82.6 4.33 49.0-261.3 65.00 0.283 81.00 1250 1264.7 86.0 4.42 50.3-272.3 65.60 0.286 82.00 1300 1314.7 89.4 4.48 51.3-280.8 66.30 0.289 82.90 1350 1364.7 92.8 4.53 52.0-287.3 66.70 0.291 84.00 1400 1414.7 96.2 4.58 52.6-293.5 67.00 0.292 84.60 1450 1464.7 99.6 4.64 53.5-301.5 67.70 0.295 85.30 1500 1514.7 103.0 4.69 54.3-309.3 68.30 0.298 85.80 1550 1564.7 106.4 4.74 55.0-317.3 68.80 0.300 86.80
0.309 0.355 0.315 0.362 0.321 0.369 0.326 0.375 0.331 0.381 0.336 0.383 0.340 0.391 0.344 0.396 0.349 0.401 0.353 0.405 0.357 0.411 0.362 0.416 0.366 0.421 0.368 0.423 0.371 0.426 0.374 0.430 0.378 0.434 0.382 0.438
… … … … … … … … … … … … … … … … … …
1600 1614.7 109.8 4.79 55.8-323.3 69.10 0.302 87.60 100.80
a Mean Effective Pressure (MEP) is defined as that single pressure rise, above atmospheric, which would require the same horsepower as the actual varying pressures during compression.
Copyright 2020, Industrial Press, Inc.
ebooks.industrialpress.com
Made with FlippingBook - Share PDF online