کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
245331 501989 2007 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Performance optimization of quantum Brayton refrigeration cycle working with spin systems
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی مهندسی انرژی و فناوری های برق
پیش نمایش صفحه اول مقاله
Performance optimization of quantum Brayton refrigeration cycle working with spin systems
چکیده انگلیسی

The new model of a quantum refrigeration cycle composed of two adiabatic and two isomagnetic field processes is established. The working substance in the cycle consists of many non-interacting spin-1/2 systems. The performance of the cycle is investigated, based on the quantum master equation and semi-group approach. The general expressions of several important performance parameters, such as the coefficient of performance, cooling rate and power input, are given. It is found that the coefficient of performance of this cycle is a close analogue of the classical Carnot-cycle. Some performance characteristic curves relating the cooling rate, the coefficient of performance and power input are plotted. Further, for high temperatures, the optimal relations between the cooling rate and the coefficient of performance are analyzed in detail.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Energy - Volume 84, Issue 2, February 2007, Pages 176–186
نویسندگان
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