Document KzGvRZMOK5xkGq3NpwmdkrOr6

American Society of HEATiNG 'and Ventilating Engineers Guide, 1937 Table 9. Coefficients of Transmission (U) for Pipes Insulated with Laminated Asbestos Type Insulation (30 to 40 Laminations Per Inch Thickness) These coefficients are expressed in Btu per hour per square foot of pipe surface per degree Fahrenheit difference in temperature between pipe and surrounding still air at 70 F Thickness 07 Insolation (Inches) i ix Nominal Pipe Sm (Inches) x i IiXx 2 2X 3 3X 4 *X s 6 8 10 12 A X l IiXx 2 2X 3 m 4 *X 5 6 8 10 12 1' Hot Wateb Steam 120 P [ 150 F 180 F j 210 F --T 1 (5 Lb) 297.7 F (50 Lb) Temperature Difference 50 F 80T HOF 140 P 157.1 P 227.7 F 0.605 0.546 0.498 0.457 0.432 0.406 0.385 0.370 0.359 0.349 0.341 0.334 0.327 0.314 0.304 0.301 0.620 0.560 0.510 0.468 0.442 0.416 0.395 0.379 0.367 0.358 0.350 0.342 0.335 0.322 0.312 0.308 0.635 0.573 0.522 0.480 0.453 0.426 0.405 0.389 0.376 0.366 0.359 0.351 0.343 0.330 0.320 0.316 0.650 0.586 0.534 0.491 0.464 0.437 0.415 0.398 0.385 0.375 0.367 0.359 0.351 0.338 0.328 0.324 0.658 0.594 0.541 0.497 0.470 0.442 0.420 0.403 0.390 0.380 0.372 0.364 0.356 0.343 0.332 0.328 0.695 0.627 0.570 0.525 0.496 0.467 0.443 0.425 0.413 '0.402 0.393 0.384 0.376 0.362 0.350 0.346 337.97" (100 Lb) 267.9 F~ 0.716 0.645 0.587 0.540 0.511 0.481 0.457 0.438 0.426 0.414 0.405 0.395 0.387 0.373 0.361 0.356 0.502 0.450 0.405 0.369 0.343 0.321 0.301 0.286 0.274 0.267 0.259 0.253 0.247 0.234 0.223 0.221 0.514 0.461 0.415 0.378 0.352 0.329 0.309 0.293 0.281 0.273 0.266 0.260 0.253 0.240 0.229 0.227 0.526 0.473 0.426 0.387 0.361 0.337 0-.317 0.301 0.288 0.280 0.272 0.266 0.260 0.246 0.235 0.232 0.539 0.484 0.436 0.396 0.370 0.345 0.324 . 0.308 0.295 0.287 0.279 0.272 0.266 0.252 0.241 0.238 0.546 0.490 0.442 0.401 0.375 0.350 0.330 0.313 0.300 0.291 0.283 0.276 0.269 0.255 0.245 0.241 0.577 0.517 0.466 0.423 0.397 0.369 0.348 0.330 0.316 0.307 0.299 0.291 0.284 0.270 0.258 0.255 0.595 0.532 0.480 0.435 0.409 0.380 0.358 0.340 0.326 0.317 0.308 0.300 0.293 0.279 0.266 0.263 X 0.442 0.453 0.464 0.475 0.481 0.508 0.523 X 0.392 0.402 0.412 0.422 0.428 0.452 0.465 ix1 0.352 0.360 0.369 0.378 0.383 0.405 0.417 0.319 0.327 0.335 0.343 0.348 0.367 0.379 0.297 0.304 0.311 0.319 0.323 0.341 0.352 2 0.274 0.280 0.287 0.294 0.298 0.314 0.324 2X 0.256 0.262 0.269 0.275 0.279 0.293 0.302 3 0.243 0.249 0.254 0.260 0.264 0.277 0.285 2 3X 0.231 0.236 0.242 0.248 0.251 0.265 0.273 4 0.223 0.228 0.234 0.240 0.243 0.257 0.265 *X 0.216 0.222 0.227 0.233 0.236 0.249 0.256 5 0.210 0.215 0.220 0.225 0.228 0.241 0.248 6 0.203 0.208 0.213 0.218 0.221 0.233 0.240 8 0.191 0.196 0.201 0.206 0.209 0.220 0.227 10 0.182 0.187 0.192 0.196 0.199 0.210 0.215 12 0.178 0.183 0.187 0.192 0.195 0.205 0.210: Chapter 36--Insulation of Piping Table 10. Coefficients of Transmission (U) for Pipes Insulated with Laminated Asbestos Type Insulation (Approximately 20 Laminations Per Inch Thickness) nese coefficients are expressed in Btu per hour per square foot of pipe surface per degree 1 Fahrenheit difference in temperature between pipe and surrounding still air at 70 F Thickness or Insolation (Inches) i iX 2 - Pips 8lEB (Inches) X X 1 ix IX 2 2X 3 3X 4 4X 5 6 8 10 12 X X 1 IiXx 2 2X 3 3X 4 4X 5 6 8 10 12 x X 1 IiXx 2 2X 3 3X 4 4X 5 6 8 10 12 120 F Hot Water 1 150 F 180 F | 210 F 1 227.1 F (5 Lb) Steam 297.7 F (50 Lb) 537.9 F (100 Lb) 50 F 0.910 0.823 0.748 0.686 0.649 0.610 0.581 0.558 0.539 0.524 0.514 0.503 0.492 0.473 0.458 0.452 80 F 0.925 0.836 0.760 0.698 0.659 0.620 0.590 0.567 0.548 0.532 0.522 0.511 0.500 0.480 0.465 0.459 Temperature Difference 110 F 140 F | 157.1 F 0.940 0.850 0.773 0.710 0.671 0.630 0.600 0.576 0.557 0.541 0.530 0.519 0.509 0.488 0.473 0.467 0.956 0.863 0.785 0.721 0.682 0.640 0.609 0.585 0.5660.551 0.539 0.528 6.517 6.497 0.481 0.475 0.964 0.871 0.792 0.728 0.688 0.647 0.615 0.591 0.571 0.556 0.544 0.533 0.522 0.502 0.485 0.478 227.7 F_ 1.001 0.902 0.823 0.756 0.716 0.671 0.638 0.613 0.592 0.577 0.564 0.553 0.542 0.521 0.504 0.497 267.9 F 1.022 0.921 0.840 0.771 0.731 0.685 0.651 0.626 0.604 0.589 0.575 0.565 0.553 0.532 0.514 0.507 0.755 0.674 0.607 0.553 0.517 0.481 0.453 0.429 0.412 0.400 0.390 0.380 0.369 0.351 0.337 0.332 0.767 0.685 0.618 0.562 0.527 0.490 0.460 0.436 0.419 0.407 0.396 0.386 0.375 0.358 0.344 0.338 0.780 0.697 0.628 0.572 0.536 0.499 0.469 0.444 0.427 0.415 0.402 0.393 0.382 0.364 0.350 0.344 0.793 0.708 0.639 0.581 0.545 0.508 0.477 0.452 0.434 0.422 0.409 0.400 0.389 0.370 0.356 0.350 0.800 0.715 0.645 0.587 0.550 0.513 0.481 0.456 0.438 0.426 0.413 0.403 0.392 0.374 0.359 0.353 0.831 0.743 0.670 0.610 0.572 0.535 0.500 0.475 0.456 0.443 0.429 0.418 0.408 0.388 0.373 0.367 0.848 0.759 0.684 0.622 0.584 0.547 0.511 0.485 0.465 0.453 0.437 0.427 0.417 0.397 0.382 0.375 0.664 0.591 0.529 0.480 0.445 0.412 0.385 0.364 0.346 0.336 0.325 0.316 0.306 0.288 0.275 0.269 0.675 0.601 0.538 0.488 0.453 0.420 0.392 0.370 0.352 0.342 0.332 0.322 0.312 0.293 0.279 0.274 6.687 0.611 0.547 0.497 0.462 0.427 0.398 0,376 0.358 0.348 0.338 0.327 0.317 0.298 0.284 0.278 0.698 0.704 0.621 0.627 0.557 0.562 0.505 0.510 0.470 0.475 0.434 0.438 0.405 0.409 0.382 0.385 0.365 0.368 0.354 0.357 0.343 0.346 0.333 0.336 0.323 0.326 0.303 6.306 0.289 0.292 0.283 | 0.286 0.732 0.652 0.584 0.529 0.494 0.455 0.425 0.400 0.382 0.371 0.360 0.349 0.338 0.317 0.302 0.296 0.747 0.665 0.597 0.540 0.504 0.464 0.434 0.408 0;390 0.378,, 0.367 0.356 0.345 0.324 0.308 0.302