Asymmetric radiation leads to cooling and heating without consuming external work. This is a simulation case of COMSOL radiation, with settings that satisfy radiation empirical laws and energy conservation. Please refer to the image for details:

1. This setting includes radiation experience: when the gas density is low, the radiation intensity is proportional to the density, and the absorption coefficient is inversely proportional to the density (the smaller the absorption coefficient, the stronger the absorption capacity)----- Domain 1 gas density=1, Domain 2 gas density=2.

2. Radiation generates a temperature difference of 2.1 ℃, rendering the second law of thermodynamics invalid.

3. This transposition can be connected in series to generate stronger heating and cooling capabilities, with low cost, and can be industrialized and commercialized. Using asymmetric radiation to achieve Type 2 perpetual motion machines will overshadow nuclear fusion.

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