Document DM3deGagBVLMYKyQ2m0n2ZJ64

American Society of Heating and Ventilating Engineers Guide, 1934 Table 8 Coefficientsof 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 slut air at /U r Thickness 07 Insulation (Inches) 1 m 2 Pipe Size (Inches) y1 i 2 2A 3 3A 4 4A s'- 6 8 9 12 A H 1 ij 21A 2A 3 3A 4 4A 5 6 8 9 12 A % 1 \\4 1A 2 2A 3 3A 4 4A 5 6 8 9 12 Hot Water f 120 F 1 ISO F I 180 F j 210 F | 227.1 F (5 Lb) Steam 297.7 V (50 Lb) 337.9 F (100 Lb) 50 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 0.308 0.301 80 F 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 0.316 0.308 Temperature Difference no f 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 0.325 0.316 140 F K 157.1 F -0.65oT 0.658 0.586 J 0.594 0.534 | 0.541 0.491 0.497 0.464 j 0.470 O.437J 0.442 0.415 1 0.420 0.398J 0.403 0.385J 0.390 0.375 I 0.380 0.367 I 0.372 0.359 I 0.364 0.351 I 0.356 0.338 | 0.343 0.333 I 0.336 0.324 j 0.328 227.7 F 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 0.355 0.346 267.9 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 0.366 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 0.227 0.221 0.442 0.392 0.352 0.319 0.297 0.274 0.256 0.243 0.231 0.223 0.216 0.210 0.203 0.191 0.185 0.178 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 0.233 0.227 0.453 0.402 0.360 0.327 0.304 0.280 0.262 0.249 0.236 0.228 0.222 0.215 0.208 0:196 0.190 0.183 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 0.239 0.232 0.464 0.412 0.369 0.335 0.311 0.287 0.269 0.254 0.242 0.234 0.227 0.220 0.213 0.201 0.195 0.187 0.539 0.546 0.484 | 0.490 0.436 I 0.442 0.396 0.401 0.370 I 0.375 0.345 0.350 0.324 0.330 0.308 0.313 0.295 I 0.300 0.287 | 0.291 0.279 1 0.283 0.272 0.276 0.266 0.269 0.252 0.255 0.245 0.249 0.238 0.241 0.475 | 0.481 0.422 0.428 0.378 0.383 0.343 0.348 0.319 | 0.323 0.294 0.298 0.275 0.279 0.260 0.264 0.248 0.251 0.240 0.243 0.233 0.236 0.225 0.228 0.218 0.221 0.206 0.209 0.200 0.203 0.192 | 0.195 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 0.263 0.255 0.508 0.452 0.405 0.367 0.341 0.314 0.293 0.277 0.265 0.257 0.249 0.241 0.233 0.220 0.214 0.205 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 0.271 0.263 0.523 0.465 0.417 0.379 0.352 0.324 0.302 0.285 0.273 0.265 0.256 0.248 0.240 0.227 0.220 0.210 Chapter 35--Heat Losses from Bare and Insulated Pipes Table 9. Coefficients of Transmission (U) for Pipes Insulated with Laminated Asbestos Type Insulation (Approximately 20 Laminations Per Inch Thickness) These coefficient 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 TH1CKNE88 OF Insulation (Inches) 1 ` 2 Nominal Pipe Size (Inches) A A 1 iA 1A . 2 3 3A 4 *A 5 6 8 9 12 A A 1 1A 1A . 2 2A 3 3A 4 4A 5 6 8 9 12 A A 1 VA 2 2A 3 3A 4 4A 5 6 8 9 12"*----. 120 F 50 r 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 0.463 0.452 Hot Water ISO F 180 F I in210 F 227.1 F JL (5 Lb) Temperature Difference 80 F 110 F 140 F j 157.1 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 0.471 0.459 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 0.478 0.467 0.956 0.964 0.863 0.871 0.785 0.792 0.721 0.728 0.682 0.688 0.640 0.647 0.609 0.615 0.585 J 0.591 0.566 | 0.571 0.551 0.556 0.539 1 0.544 0.528 I 0.533 0.517 0.522 0.497 0.502 0.486 0.491 0.475 0.478 Steam 297.7 F "337.9 F (50 Lb) (100 Lb) 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 0.510 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 0.520 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 0.342 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 0.349 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 0.355 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 0.361 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 0.364 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 0.378 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 0.387 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 0.280 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 0.284 0.274 0.687 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 0.289 0.278 0.698 0.(521 0.557 0.505 0.470 0.434 0.405 0.382 0.365 0.354 0.343 0.333 0.323 .0.303 0.294 0.283 0.704 0.627 0.562 0.510 0.475 0.438 0.409 0.385 0.368 0.357 0.346 0.336 0.326 0.306 0.297 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 0.307 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 0.313 0.302 511