https://doi.org/10.1140/epjp/i2019-12600-8
Regular Article
Optimal performance region of energy selective electron cooling devices consisting of three reservoirs
1
College of Power Engineering, Naval University of Engineering, 430033, Wuhan, China
2
Institute of Thermal Science and Power Engineering, Wuhan Institute of Technology, 430205, Wuhan, China
3
School of Mechanical & Electrical Engineering, Wuhan Institute of Technology, 430205, Wuhan, China
* e-mail: lgchenna@yahoo.com
Received:
24
November
2018
Accepted:
28
February
2019
Published online:
20
June
2019
In this paper, a model of irreversible three-electron-reservoir energy selective electron (ESE) cooling device with heat leakage is established. By utilizing the finite time thermodynamics, the optimal performance of the cooling device is studied and the influences of chemical potential differences of electron reservoirs, center energy level of energy filters and heat leakage on the optimal performances are discussed. On the basis of cooling rate and coefficient of performance (COP) analyses, the exergy-based ecological function and figure of merit are proposed as objective functions. The operation properties of ESE cooling device with different objective functions are investigated and the optimal performance region is obtained. Higher cooling rate and COP can both be attained for the ESE cooling device when it is working in the optimal performance region.
© Società Italiana di Fisica / Springer-Verlag GmbH Germany, part of Springer Nature, 2019
