A long Pyroceram rod (Ï = 2600 kg/m 3 , c p = 808 J/kg·K, k =
Question:
(a) Table 182
(b) The Heisler chart (Fig. 1815).
Transcribed Image Text:
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 = radius r) hrjk for a cylinder or sphere of Plane Wall Cylinder A1 Sphere A1 Bi A1 λι λι 0.01 0.0998 1.0017 0.1412 1.0025 0.1730 1.0030 0.1995 0.2814 1.0033 1.0050 1.0099 0.02 0.1410 0.1987 0.2445 1.0060 0.04 1.0066 0.3450 1.0120 0.06 0.2425 1.0098 0.3438 1.0148 0.4217 1.0179 0.08 1.0130 1.0197 0.4860 0.2791 0.3960 1.0239 0.1 0.3111 1.0161 0.4417 1.0246 0.5423 1.0298 0.2 0.4328 1.0311 0.6170 1.0483 0.7593 1.0592 0.9208 0.3 0.5218 1.0450 0.7465 1.0712 1.0880 1.0931 0.4 0.5932 1.0580 0.8516 1.0528 1.1164 0.5 0.6533 1.0701 0.9408 1.1143 1.1656 1.1441 0.6 0.7051 1.0814 1.0184 1.1345 1.2644 1.1713 1.3525 1.4320 0.7 0.7506 1.0918 1.0873 1.1539 1.1978 1.1016 1.1107 1.2236 0.8 0.7910 1.1490 1.1724 1.5044 0.9 0.8274 1.2048 1.1902 1.2071 1.2488 1.0 0.8603 1.1191 1.2558 1.5708 1.2732 2.0 1.0769 1.1785 1.5995 1.3384 2.0288 1.4793 3.0 1.1925 1.2102 1.7887 1.4191 2.2889 1.6227 1.7202 4.0 1.2646 1.2287 1.9081 1.4698 2.4556 5.0 1.3138 1.2403 1.9898 1.5029 2.5704 1.7870 1.8338 6.0 1.3496 1.2479 2.0490 1.5253 2.6537 1.2532 7.0 1.3766 2.0937 1.5411 2.7165 1.8673 8.0 1.3978 1.2570 2.1286 1.5526 2.7654 1.8920 9.0 1.4149 1.2598 2.1566 1.5611 2.8044 1.9106 2.8363 10.0 1.4289 1.2620 2.1795 1.5677 1.9249 1.2699 20.0 1.4961 2.2880 1.5919 2.9857 1.9781 30.0 1.5202 1.2717 2.3261 1.5973 3.0372 1.9898 40.0 1.5325 1.2723 2.3455 1.5993 3.0632 1.9942 50.0 1.5400 1.5552 1.2727 2.3572 1.6002 1.6015 3.0788 1.9962 2.3809 3.1102 100.0 1.2731 1.9990 1.2732 1.5708 2.4048 1.6021 3.1416 2.0000 To - To Oo = 1.0 0.7 Sphere 0.5 0.4 0.3 hro Bị 100 0.2 0.1 0.07 0.05 0.04 0.03 0.02 0.01 0.007 0.005 0.004 0.003 0.002 0.001 3 4 5 6 7 8 9 10 T= atlr? 0.5 1.0 1.5 2 2.5 20 30 40 50 100 150 200 250 Too Initially T= T, (a) Midpoint temperature. From M. P. Helsler, "Temperature Charts for Induction and Constant Temperature Heating," Trans. ASME 69, 1947, Fig. 9, p. 231. Reprinted by permission of ASME International. Го T-T Ho To- Omax 1.0 rir, = 0.2. 1.0 0.9 0.9 0.8 0.8 0.7 0.7 0.6 0.6 0.6 0.5 0.5 0.4 0.4 0.3H'ö 0.2 H0.g 0.3 0.2 0.1 0.1 1.0LHI Sphere Sphere 0. 10 5 10-4 10-3 10-2 10 102 103 104 0.01 0.1 1.0 10 100 10 Bi?t = h?at/k? Bi hr. (b) Temperature distribution. (c) Heat transfer. From M. P. Helsler, "Temperature Charts for Induction and Constant Temperature Heating," Trans. ASME 69, 1947, Fig. 12, p. 232. Reprinted by permission of ASME International. From H. Gröber et al.
Fantastic news! We've Found the answer you've been seeking!
Step by Step Answer:
Answer rating: 72% (18 reviews)
The temperature at the center of a Pyroceram rod after 3 minutes of cooling is to be determined us...View the full answer
Answered By
Md Imtiaz
As a tutor, my focus is to help communicate and break down difficult concepts in a way that allows students greater accessibility to their course material. I excel in the categories of Statistics and Mathematics. Apart from MS Office, I know R, Python, C, Minitab and Latex. You'll get educational help within the shortest possible time by spending the least amount. Please don't hesitate to reach out by contacting me. Regards, Imtiaz
0.00
0 Reviews
10+ Question Solved
Related Book For
Fundamentals of Thermal-Fluid Sciences
ISBN: 978-0078027680
5th edition
Authors: Yunus A. Cengel, Robert H. Turner, John M. Cimbala
Question Posted:
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.
Students also viewed these Physics questions
-
A long iron rod (Ï = 7870 kg/m 3 , c p = 447 J/kg·K, k = 80.2 W/m·K, and α = 23.1 à 10 6 m 2 /s) with diameter of 25 mm is initially heated to a uniform...
-
Spherical glass beads coming out of a kiln are allowed to cool in a room temperature of 30°C. A glass bead with a diameter of 10 mm and an initial temperature of 400°C is allowed to cool for...
-
The soil temperature in the upper layers of the earth varies with the variations in the atmospheric conditions. Before a cold front moves in, the earth at a location is initially at a uniform...
-
An impure sample (0.70 g) of potassium carbonate (K2CO3) is dissolved in enough water to make 200.0 mL of solution A. A 20.00 mL aliquot of solution A is taken and put into an Erlenmeyer flask. To...
-
How might California cities alternatively have developed a rationing by queues approach using the Internet? Why do you suppose that the Venezuelan government has begun to provide individuals with...
-
(a) If u = (a, b) is a unit vector and f has continuous second partial derivatives, show that D u 2 f = f xx a 2 + 2f xy ab + f yy b 2 (b) Find the second directional derivative of f (x, y) = xe 2y...
-
What is the owners capital as of the end of May
-
The city of Brownswood is trying to understand its road repair costs. As a starting point, Mark Winston, the city's finance manager, asked public works manager Rachel Morris to gather relevant data....
-
Decarbo 31 Jekawy 1,2125 cared an Oecenv 31, 3222 way on December 31, 2223, to close Dewa-Jouni 1800 and accepted by w y CHER Credt Apkeys that attandegancetranonging (1) Papare the artry for the...
-
1. In which specific ways is Maya being a manipulator? 2. To what extent do you think Maya's behavior is justifiable? 3. How should Ivan and Courtney have handled the situation? 4. What suggestions...
-
Steel rods, 2 m in length and 60 mm in diameter, are being drawn through an oven that maintains a temperature of 800°C and convection heat transfer coefficient of 128 W/m 2 ·K. The steel...
-
A 2-cm-diameter plastic rod has a thermocouple inserted to measure temperature at the center of the rod. The plastic rod (Ï = 1190 kg/m 3 , c p = 1465 J/kg·K, and k = 0.19 W/m·K)...
-
Make a list of potential objects from the description of the ATM scenario given in this chapter.
-
You have been given the following information for XYZ (Pty) Ltd: Balance Sheet Income Statement 2022 2023 2022 2023 R' 000 R' 000 R' 000 R' 000 Non-current assets (carrying value) 250 270 Revenue 305...
-
In the readings this week Northouse identifies intelligence types and authentic leadership, whilst Coleman discusses what makes a great leader. Answer the following question: From the text and...
-
Question 1 A stakeholder analysis represents key project management roles and responsibilities. Task: Critically explain the meaning of this statement to a project team. In your explanation address...
-
1. What factors affect the price and yield of a bond in the secondary market? 2. How does the coupon rate of a bond impact its price and yield?
-
Machine Hours Electricity cost January 1,000 , 4,800 February 1,250, 5,200 March 1,500 , 5,400 April 1,200 , 5,000 May 1,400 , 5,600 Using high-low method, what will be used if there is cost that is...
-
This chapter has stated that all personnel in the hotel require training in the responsible service of alcoholic beverages. How would you explain the need for this training to a new room-service...
-
A bar of length = 1 has one fixed and one free end and stiffness function c(x) = 1 - x. Find the displacement when subjected to a unit force. Pay careful attention to the boundary condition at the...
-
The equation of motion for a pendulum whose base is accelerating horizontally with an acceleration a(t) is Suppose that g = 9.81 m/s 2 , L " 1 m, and (0) = 0. Plot ,(t) for 0 t 10 s for the...
-
Van der Pols equation is This equation is stiff for large values of the parameter 3. Compare the performance of ode45 and ode15s for this equation. Use 3 =1000 and 0 t 3000, with the initial...
-
The equations for an armature-controlled dc motor are the following. The motors current is i and its rotational velocity is . where L, R, and I are the motors inductance, resistance, and inertia; K T...
-
Oregon can not tax interest or dividends on obligations that states cannot tax under federal law. Examples of such obligations include which of the following? Question 7Select one: a. Bonds issued by...
-
Which of the following defines long-term liabilities? Multiple choice question. Long-term liabilities are reported before current liabilities on a classified balance sheet. Long-term liabilities are...
-
Which of the following individuals has properly disclosed rates and terms related to a Refund Anticipation Loan (RAL)? Question 15Select one: a. Tax Consultant Jerry has verbally discussed with his...
Study smarter with the SolutionInn App