It is shown that the work output of a Brayton heat engine working with ideal Bose gases is greater that of a classical Brayton cycle and the quantum degeneracy of the gas does not affect the efficiency of the cycle.

• 结果表明；以理想玻色气体为工质的布雷顿热机的输出功比以理想气体为工质的大；而热机效率不受量子简并性的影响.