A rectangular electrical heater is attached to a metal sheet. Measurements show the surface temperatures of T1, T2, T3 are 55, 60 and 42 °C, respectively. Both sides of the heater and metal sheet are exposed to an environment where h is equal, and T∞ = 23 °C. Assume K values & you can neglect the contact resistance. a. Find the value of h. b. Find the value of the volumetric heat generation. c. Draw the sketch of the temperature as a function of the direction of heat dissipation. d. What is the exact location of the maximum temperature in the plate-heater assembly? e. If h = 230 W/m2K, q_dot = 1 x 103 W/m3, what is the maximum temperature in the heater?

A rectangular electrical heater is attached to a metal sheet. Measurements show the surface temperatures of T1, T2, T3 are 55, 60 and 42 °C, respectively. Both sides of the heater and metal sheet are exposed to an environment where h is equal, and T∞ = 23 °C. Assume K values & you can neglect the contact resistance. a. Find the value of h. b. Find the value of the volumetric heat generation. c. Draw the sketch of the temperature as a function of the direction of heat dissipation. d. What is the exact location of the maximum temperature in the plate-heater assembly? e. If h = 230 W/m2K, q_dot = 1 x 103 W/m3, what is the maximum temperature in the heater?

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter7: Forced Convection Inside Tubes And Ducts

Section: Chapter Questions

Problem 7.48P

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