题目内容

Which of the following descriptions of the adiabatic radiation surface is wrong?

A. The net radiative heat flux on the adiabatic radiation surface is 0
B. An adiabatic radiation surface can be regarded as a surface with its reflectance of 1
C. The surface temperature of the adiabatic radiation surface is affected by the radiation network system that it participates in
D. The surface temperature of adiabatic radiation surface has a certain influence on the heat transfer of the radiation network system that it participates in

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The correct judgment of effective radiation is

A. For the black-body surface, the effective radiation of its surface is greater than the radiation of its surface
B. For the diffuse-grey-body surface, the effective radiation of its surface is equal to the radiation of its surface
C. For the diffuse-grey-body surface, the effective radiation of its surface is greater than the radiation of its surface
D. For the diffuse-grey-body surface, the effective radiation of its surface is less than the radiation of its surface

For the radiative heat transfer calculation, the criterion for determining the number of surfaces of an enclosure radiant system is

A. Geometric boundary conditions of enclosure systems
B. Thermal boundary conditions of enclosure systems
C. Geometric and thermal boundary conditions of enclosure systems
D. Geometric or thermal boundary conditions of enclosure systems

In the radiation network diagram of an enclosure on a diffuse-grey-body surface, the effective radiation on the surface can be equivalent to

A. Source potential
B. Node potential
C. Surface radiation thermal resistance
D. Space radiation thermal resistance

For the purpose of plating silver on the surface of the thermos flask, which description is correct

A. Strengthen heat transfer of thermos
B. Increase the emissivity of the flask surface of the thermos bottle
C. Reduce the emissivity of the flask surface of the thermos bottle
D. Increase the absorptance of the flask surface of the thermos flask

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