Dissertation > Excellent graduate degree dissertation topics show

Performance Analysis on the Nonlinear Didoe and Quantum Dot Engines

Author: WangXiuMei
Tutor: HeJiZhou
School: Nanchang University
Course: Condensed Matter Physics
Keywords: Electronic heat engine or refrigerator Fluctuation theory Electronic transmission Performance characteristics
CLC: TN31
Type: Master's thesis
Year: 2011
Downloads: 16
Quote: 0
Read: Download Dissertation

Abstract


Heat engine and refrigerator are passed through various working substances heat device. Traditional thermal dryer and refrigerator are in the macroscopic size range of classic material as a heat transfer medium, in recent years, with the deepening of the theoretical research and the development of science and technology, people of power and cooling technology gradually by macro scale into mesoscopic and microscopic field, as the working substance in electronic electronic heat engine and refrigerator aroused great interest. This paper studies two types of heat engine model: the first one is a the nonlinear diode system constitutes Boulanger machine. Equivalent to the liquid medium molecular Brownian particle collision in two different temperature diode, the the ion vibration of the electron scattering fluctuation theory, the use of non-linear systems, by solving the Fokker - Planck equation (Fokker-Planck equation.) , analysis of the performance characteristics of the diode thermal machine. The second is a quantum dot system consisting of electronic thermal machine. Use of electronic transmission theory, by solving the quantum master equation (Quantum master equation), the performance characteristics of single-electron quantum dot resonant tunneling through quantum system. Specific content is organized as follows: In the second chapter in the study at two different temperatures in a thermal reservoir, the heat engine device identical to the performance characteristics of two nonlinear diode is reverse connected in parallel on a capacitor, the ion conductor vibration of the scattering of electrons equivalent liquid medium molecular Brownian particle collision, the electron motion and the Brownian particle movement is similar to the environment of the non-uniform friction coefficient, based on the fluctuation theory, you can get the electronic movement Fokker - Planck equation (Fokker-Planck equation). When plus an ideal drive current source in the system, the system will achieve the function of the external work. Depict the curve as well as the optimization of the performance characteristics of the heat engine performance parameters with two libraries temperature ratio characteristic curve of heat leak through numerical simulation, analysis nonlinear intensity diode, the hot leakage and temperature than the performance characteristics of the heat engine. Finally, the analysis of the performance characteristics of the ideal diode heat engine. In the third chapter, the external magnetic field on the heat engine performance characteristics of the quantum dots. Two temperature and chemical potential of quantum dots heat engine is connected by a single-level quantum dot electronic thermal reservoir. Spin degeneracy of the resonance level energy and the electron temperature gradient and the gradient of chemical potential driven by the quantum dots between two thermal reservoir heat flow or heat. When the system in the presence of an applied magnetic field, the electron spin degeneracy and destroyed, split into two energy levels of the electron tunneling process can be described using the quantum master equation (Quantum Master equation). Through numerical simulation analysis of the strength of the external magnetic field on the performance characteristics of the heat engine. In the fourth chapter studies the performance characteristics of a two-level quantum dot refrigerator. Both temperature and chemical potential are not the same plate can be seen as two electronic thermal reservoir, driven by the temperature gradient and the gradient of chemical potential, the electrons pass through the two single-resonance level quantum dot tunnel wear two thermal library energy transmission. Electron tunneling process can be described using quantum master equation (Quantum Master equation). The stable read the probability stream and the unit time heat absorbed from the two temperature library can be obtained by the master equation, and then to write the refrigeration rate of the chiller and cooling coefficient expression. Through numerical simulation, a detailed analysis of the impact on the chiller performance and optimize the parameters of two-level clearance.

Related Dissertations

  1. Modification for PVA-Based Composite Packaging Material with Nano-SiO2 and Its Influence on Fresh Preservation Effect of Salted Duck Eggs,TS253.46
  2. The Emotional, Dramatic, Fantastic Characters of Schumann’s "Phantasiest(?)cke" (Op.12),J624.1
  3. The Structure Deformation and Elelctronic Properties of the Graphene,O613.71
  4. Mozart’s 11th Piano Sonata (K.331) Performed the First Movement of the Differences in Interpretation of Research,J624.1
  5. Operating characteristics of the high-pressure common-rail diesel engine fueled with biodiesel,TK427
  6. Emotional performance characteristics of lines in Chinese and Western painting,J205
  7. Basic Characteristics Analysis and Training Strategy Design of Tactical Consciousness Activities for College Football Players,G843
  8. Discuion of Performing Characteristics of Song-and-Dance Duet in Donglu,J825
  9. Research on Bullying Inclination and Behavioral Characteristics of Middle School Students and Its Causing Factors,B844.2
  10. A Case Study of Performance Appraisal for Publishing Company,G231-F
  11. Fang Dongmei Literary and Aesthetic Theory,I01
  12. The Research of Q Version Online Games Role Setting Performance Characteristic,F49
  13. Table Tennis tactical awareness formation process and the performance characteristics of,G846
  14. Local Sentiment,J213
  15. Double-wall Researches on Construction Styles & Appearance Features,TU227
  16. Two types of particles and heat exchange type chiller performance characteristics,TB651
  17. On Peony Imagery in Tang Dynasty,I207.22
  18. Study on Northern Song Dynasty Guo Xi Humanities Landscape Painting Natural View,J213
  19. Experiment Study on Subway Waste Heat-Ground Source Hybrid Heat Pump,TU831
  20. Theoretical Study on the Electron Transport Properties of Nanomolecular Devices,TB383.1

CLC: > Industrial Technology > Radio electronics, telecommunications technology > Semiconductor technology > Semiconductor diode
© 2012 www.DissertationTopic.Net  Mobile