Abstract:
A quantum Otto engine with squeezed thermal reservoir as its working substances
studied for an adiabatic operation at both symmetric thermal reservoirs, (rc = rh
) and
asymmetric thermal reserviors (rc ,h
). The power and efficiency of the heat engine are
derived analytically as functions of the temperature ratio. Using the optimization methods
suggested by A.C Hernandez et: al, the heat engine is effectively optimized and found
to yield better working conditions in some ranges of temperature ratios. In symmetric
thermal reservoir, the figure of merit, a quantity defined as a product of scaled power and
scaled efficiency, is found to be greater than unity in range of 0 ≤
Tc
Th
≤ 0.22. Under the same
condition, the figure of merit is found to be less than unity in the range of 0.22 <
Tc
Th
≤ 0.5.
Similarly, in asymmetric thermal reservoir the figure of merit, is found to be greater than
one in the range of 0 ≤
Tc
Th
≤ 0.047.
Under the same case, it is found to be less than one in the range 0.047 <
Tc
Th
≤ 0.1. It
means that in some ranges of the temperature ratios, it is found to work better in the
optimized condition whereas, in other ranges it better performs under maximum power
working condition. So, it is possible to switch the engine between optimized condition
and maximum power working conditio
