The extremely high temperatures needed to trigger nuclear fusion are proposed to be generated by laser irradiating a spherical pellet of deuterium and tritium fuel of diameter D, = 2.0 mm. (a) Determine the maximum fuel temperature that can be achieved by irradiating the pellet with 200 lasers, each producing a power of P = 450 W. The pellet has an absorptivity a = 0.3 and emissivity = 0.8. (b) The pellet is placed inside a cylindrical enclosure. Two laser entrance holes are located at either end of the enclosure and have a diameter of DLEH = 2.4 mm. Determine the maximum temperature that can be generated within the enclosure.

The extremely high temperatures needed to trigger nuclear fusion are proposed to be generated by laser irradiating a spherical pellet of deuterium and tritium fuel of diameter D, = 2.0 mm. (a) Determine the maximum fuel temperature that can be achieved by irradiating the pellet with 200 lasers, each producing a power of P = 450 W. The pellet has an absorptivity a = 0.3 and emissivity = 0.8. (b) The pellet is placed inside a cylindrical enclosure. Two laser entrance holes are located at either end of the enclosure and have a diameter of DLEH = 2.4 mm. Determine the maximum temperature that can be generated within the enclosure.

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.

Chapter11: Heat Transfer By Radiation

Section: Chapter Questions

Problem 11.28P

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Concept explainers

Radiation

Radiation can be described as the energy in the form of a particular matter or electromagnetic waves traveling in the air and can be in the form of light, sound, and heat. Radiation can be detected through special instruments like X-rays. The radiation from a cooler object is less intense as compared to the radiation from hot objects.

Question

19. PLEASE ANSWER ASAP

The extremely high temperatures needed to trigger nuclear fusion are proposed to be generated by laser irradiating a spherical pellet
of deuterium and tritium fuel of diameter Dp = 2.0 mm.
(a) Determine the maximum fuel temperature that can be achieved by irradiating the pellet with 200 lasers, each producing a power of
P = 450 W. The pellet has an absorptivitya = 0.3 and emissivity e = 0.8.
(b) The pellet is placed inside a cylindrical enclosure. Two laser entrance holes are located at either end of the enclosure and have a
diameter of DLEH = 2.4mm. Determine the maximum temperature that can be generated within the enclosure.
N
(a)
DLEH
N
(b)

-
(a)
Determine the maximum fuel temperature that can be achieved in part (a), in K.
Tmax= i
K
DLEH
Determine the maximum fuel temperature that can be achieved in part (b), in K.
Tmax =
Physical Properties Mathematical Functions
K
(b)

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