tailieunhanh - Heat Transfer Handbook part 15

Heat Transfer Handbook part 15. The Heat Transfer Handbook provides succinct hard data, formulas, and specifications for the critical aspects of heat transfer, offering a reliable, hands-on resource for solving day-to-day issues across a variety of applications. | 130 TABLE Thermophysical Properties of Solid Elements Continued Titanium Ti T 50 100 200 273 298 400 600 800 1000 1200 1400 1600 P 4510 4502 4499 4487 4461 4432 4402 4379 4348 4315 cp 298 382 582 733 X aD Tungsten W T 50 100 200 273 298 400 500 1000 1500 2000 3000 3600 P 19 300 19 270 19 250 19 110 18 950 18 790 18 380 18 050 cp 182 187 207 227 326 424 523 X 428 208 186 177 174 159 146 118 107 100 D Uranium U T 50 100 200 273 298 P 19 070 cp 117 117 X D Vanadium V T 50 100 200 273 298 400 600 800 1000 1400 1800 2000 P 6198 6214 6244 6272 6298 6339 6364 6369 cp 479 481 489 505 521 537 569 601 X D Zinc Zn T 50 100 200 273 298 400 500 600 P 7258 7199 7153 7137 7070 7002 6933 cp 295 366 383 387 405 422 440 X 205 117 118 117 116 111 107 103 an aT temperature K p density kg m3 cp heat capacity J kg K k thermal conductivity W m K aD thermal diffusivity 10-6 m2 s . The heat capacities are from Liley et al. 1997 . The densities are calculated from the formulations of thermal linear expansion by Touloukian et al. 1975 1977 . Those at temperatures higher than 273 K are calculated from the formulations compiled by Liley et al. 1997 . The uncertainties of these formulations are about 2 for most elements listed. 131 132 TABLE Thermophysical Properties of Metallic Alloys Properties at 20 C 293 K Thermal Conductivity X W m K P cp X aD -100 C 0 C 100 C 200 C 400 C 600 C kg m3 kJ kg K W m K cm2 s 173 K 273 K 373 K 473 K 673 K 873 K Aluminum Duralumin 94-96 Al 3-5 Cu trace Mg 2787 164 126 159 182 194 Silumin 87 Al 13 Si 2659 164 149 163 175 185 Copper Commercial 8300 372 Aluminum bronze 95 Cu 5 Al 8666 83 Brass 70 Cu 30 Zn 8522 111 88 128 144 .