An infrared camera is used to measure a temperature at a tissue location. The infrared camera uses the same equation as that in the lecture notes. When the total hemispherical emissivity is selected as =1.0, the temperature reading on the camera is 45°C. (a) Based on the equation given in the notes, please calculate the radiation heat flux received by the camera qck. The Stefan-Boltzmann's constant ois 5.67* 108 W/(m² K¹). (b) However, you notice that the actual emissivity of the tissue surface should be 0.95. The room temperature is 20°C. Use the equation again to calculate the temperature of the tissue location, note that 9ck should be the same as in (a). What is the absolute error of the measurement if both the room temperature and deviation from a perfect blackbody surface are not considered?

An infrared camera is used to measure a temperature at a tissue location. The infrared camera uses the same equation as that in the lecture notes. When the total hemispherical emissivity is selected as =1.0, the temperature reading on the camera is 45°C. (a) Based on the equation given in the notes, please calculate the radiation heat flux received by the camera qck. The Stefan-Boltzmann's constant ois 5.67* 108 W/(m² K¹). (b) However, you notice that the actual emissivity of the tissue surface should be 0.95. The room temperature is 20°C. Use the equation again to calculate the temperature of the tissue location, note that 9ck should be the same as in (a). What is the absolute error of the measurement if both the room temperature and deviation from a perfect blackbody surface are not considered?

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

An infrared camera is used to measure a temperature at a tissue location. The infrared
camera uses the same equation as that in the lecture notes. When the total hemispherical emissivity is
selected as &=1.0, the temperature reading on the camera is 45°C.
(a) Based on the equation given in the notes, please calculate the radiation heat flux received by the
camera qck. The Stefan-Boltzmann's constant ois 5.67*108 W/(m²K¹).
(b) However, you notice that the actual emissivity of the tissue surface should be 0.95. The room
temperature is 20°C. Use the equation again to calculate the temperature of the tissue location, note that
qck should be the same as in (a). What is the absolute error of the measurement if both the room
temperature and deviation from a perfect blackbody surface are not considered?

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