Spherical glass beads coming out of a kiln are allowed to cool in a room temperature of
Question:
(a) Table 182
(b) The Heisler chart (Fig. 1816). The glass bead has properties of Ï = 2800 kg/m3, cp = 750 J/kg·K, and k = 0.7 W/m·K.
TABLE 18-2 Coefficients used in the one-term approximate solution of transient one- dimensional heat conduction in plane walls, cylinders, and spheres (Bi = HLIK for a plane wall of thickness 2L, and Bi = hrjk for a cylinder or sphere of radius r) Plane Wall Cylinder A1 Sphere A1 Bi A1 A1 A1 0.1730 0.01 0.0998 1.0017 0.1412 1.0025 1.0030 0.02 0.1410 1.0033 0.1995 1.0050 0.2445 1.0060 1.0099 0.3450 1.0120 1.0179 0.04 0.1987 1.0066 0.2814 0.06 0.2425 1.0098 0.3438 1.0148 0.4217 0.08 0.2791 1.0130 0.3960 1.0197 0.4860 1.0239 0.3111 0.1 1.0161 0.4417 1.0246 0.5423 1.0298 0.6170 0.7593 0.9208 0.2 0.4328 1.0311 1.0450 1.0483 1.0592 0.3 0.5218 0.7465 1.0712 1.0880 0.4 0.5932 1.0580 0.8516 1.0931 1.0528 1.1164 0.5 1.1441 0.6533 1.0701 1.0814 0.9408 1.1143 1.1656 1.1713 0.6 0.7051 1.0184 1.1345 1.2644 0.7 0.7506 1.0918 1.0873 1.1539 1.3525 1.1978 1.1016 1.1724 0.8 0.7910 1.1490 1.4320 1.2236 0.9 0.8274 1.1107 1.2048 1.1902 1.5044 1.2488 1.0 1.5708 0.8603 1.1191 1.2558 1.2071 1.2732 1.1785 2.0 1.0769 1.5995 1.3384 2.0288 1.4793 3.0 1.1925 1.2102 1.7887 1.4191 2.2889 1.6227 4.0 1.2646 1.2287 1.9081 1.4698 2.4556 1.7202 1.5029 5.0 1.3138 1.2403 1.9898 2.5704 1.7870 6.0 1.3496 1.2479 2.0490 1.5253 2.6537 1.8338 1.5411 7.0 1.3766 1.2532 2.0937 2.7165 1.8673 8.0 9.0 1.3978 1.2570 2.1286 1.5526 2.7654 1.8920 1.4149 1.2598 2.1566 1.5611 2.8044 1.9106 10.0 1.4289 1.2620 2.1795 1.5677 2.8363 1.9249 20.0 30.0 40.0 1.4961 1.2699 2.2880 1.5919 2.9857 1.9781 1.5202 1.2717 2.3261 1.5973 3.0372 1.9898 1.5325 1.2723 2.3455 1.5993 3.0632 1.9942 50.0 1.5400 1.2727 2.3572 1.6002 3.0788 1.9962 100.0 3.1102 1.5552 1.2731 2.3809 1.6015 1.9990 1.5708 1.2732 2.4048 1.6021 3.1416 2.0000
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The temperature at the center of a spherical glass bead after 3 minutes of cooling is to be de...View the full answer
Fundamentals of Thermal-Fluid Sciences
ISBN: 978-0078027680
5th edition
Authors: Yunus A. Cengel, Robert H. Turner, John M. Cimbala
Related Video
Conduction heat transfer is the transfer of heat through matter (i.e., solids, liquids, or gases) without bulk motion of the matter. In another ward, conduction is the transfer of energy from the more energetic to less energetic particles of a substance due to interaction between the particles. Conduction heat transfer in gases and liquids is due to the collisions and diffusion of the molecules during their random motion.
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