Heating load and cop optimization of an irreversible quantum brayton heat pump working with spin-1/2 systems
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| dc.contributor.author | Liu, Xiaowei
|
en |
| dc.contributor.author | Chen, Lingen
|
en |
| dc.contributor.author | Meng, Fankai
|
en |
| dc.contributor.author | Ding, Zemin
|
en |
| dc.date.accessioned | 2017-09-19T12:48:31Z | |
| dc.date.available | 2017-09-19T12:48:31Z | |
| dc.date.issued | 2017 | en |
| dc.description | Papers presented at the 13th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Portoroz, Slovenia on 17-19 July 2017 . | en |
| dc.description.abstract | By considering quantum friction, heat resistance and heat leakage, this paper establishes a quantum Brayton heat pump model. The working substance is a two-level spin-1/2 system, and the cycle has four branches: two adiabatic branches and two isomagnetic branches. By using quantum thermodynamics and quantum master equation, this paper obtains heating load and COP of the pump. By using Euler-Lagrange method, this paper optimizes heating load and COP performance for two cases: the general case and the case at high temperature limit. Influences of quantum friction, duration of adiabatic process and heat leakage on the performance are further analyzed. | en |
| dc.description.sponsorship | International centre for heat and mass transfer. | en |
| dc.description.sponsorship | American society of thermal and fluids engineers. | en |
| dc.format.extent | 7 pages | en |
| dc.format.medium | en | |
| dc.identifier.uri | http://hdl.handle.net/2263/62374 | |
| dc.language.iso | en | en |
| dc.publisher | HEFAT | en |
| dc.rights | University of Pretoria | en |
| dc.subject | Heating load | en |
| dc.subject | Cop optimisation | en |
| dc.subject | Irreversible quantum brayton heat pump | en |
| dc.subject | Spin-1/2 systems | en |
| dc.title | Heating load and cop optimization of an irreversible quantum brayton heat pump working with spin-1/2 systems | en |
| dc.type | Presentation | en |
