HEAT TRANSFER - EXAMPLE 5.3 : In a cylinder with a hollow, let a is outside radius and b is the inside radius. In a steady state temperature distribution with no heat generation, the differential equation is (d / dr) (r dT / dr) = 0 where r is for radius and T is for temperature. (a) Integrate the heat equation above into T(r) in term of r. (b) At r = a, T = c; at r = b, T = d. Find the heat equation of T(r) in term of r, a, b, c, d.
Answer Posted / kangchuentat
HEAT TRANSFER - ANSWER 5.3 : Let r (dT / dr) = e, then dT / dr = e / r. T(r) = e ln r + f by integrating both sides where e and f are constants. (b) Let c = e ln a + f and d = e ln b + f. Subtracting both equations gives c - d = e (ln a - ln b) = e ln (a / b). Then e = (c - d) / [ ln (a / b) ] and f = d - e ln b. T(r) = e ln r + d - e ln b = e ln (r / b) + d = (c - d) [ ln (a / b) ] ln (r / b) + d. The answer is given by Kang Chuen Tat; PO Box 6263, Dandenong, Victoria VIC 3175, Australia; SMS +61405421706; chuentat@hotmail.com; http://kangchuentat.wordpress.com.
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
What is difference between Piping Standard & Piping Specification ?
Name some factors to consider when trying choosing between a dry screw compressor and an oil-flooded screw compressor?
can anyone send me the written test paper of Indian oil corporation ltd. My email id is pratuljakhmola@yahoo.com
Explain what is a quick way to calculate frictional pressure drops in carbon steel pipe?
What is a common source of error in determining the percent spent caustic in refinery applications?
how does refractive index detector work?
Please help to get IOCL/HPCL or other chemical engineering paper pls send kathir_skv@yahoo.com Regards, kathirvel
Define pcbs?
How can the particle size distribution be determined in a given bulk solid?
What step should be taken in process industries if the process variable is oscillating?
Should slurry pipes be sloped during horizontal runs?
Is it advisable to cool a fin fan by spraying demineralized water on it?
What are the specialized grinding methods?
Explain how can viscosity affect the design of a mixer?
How can you keep our seawater used for heat rejection clean before entering our heat exchangers?