A rectangular electrical heater is attached to a metal sheet. Measurements show the surface temperatures of...
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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. 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/m?K, q_dot = 1 x 10' w/m, what is the maximum temperature in the heater? Convection Convection h=unknown h=unknown Tm = 23 °C T. = 23 °C Electric heater metal th = 10 mm T3 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. 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/m?K, q_dot = 1 x 10' w/m, what is the maximum temperature in the heater? Convection Convection h=unknown h=unknown Tm = 23 °C T. = 23 °C Electric heater metal th = 10 mm T3
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