CAJ | 학술논문

自从分置式斯特林制冷机出现以来,工程设计对可靠的整机理论模型有着迫切需求.给出狭缝调相式气动分置式斯特林制冷机热动力学模型及控制方程,直线压缩机采用了绝热模型,压缩活塞的运动规律采用了试验修正,模型中考虑了活塞驱动电机运动特征和回热不完全、轴向导热、穿梭运动、气体泵热、辐射等主要冷损,排出器运动采用单自由度强迫运动模型,并运用数值计算方法模拟整机性能.该模型可用来对整机性能进行预测并帮助设计者深入理解整机物理过程.
자종분치식사특림제랭궤출현이래,공정설계대가고적정궤이론모형유착박절수구.급출협봉조상식기동분치식사특림제랭궤열동역학모형급공제방정,직선압축궤채용료절열모형,압축활새적운동규률채용료시험수정,모형중고필료활새구동전궤운동특정화회열불완전、축향도열、천사운동、기체빙열、복사등주요랭손,배출기운동채용단자유도강박운동모형,병운용수치계산방법모의정궤성능.해모형가용래대정궤성능진행예측병방조설계자심입리해정궤물리과정.
Along with the advances of Stirling cryocoolers,there is a pressing demand for a theoretical model which can be used for reliable and practical design．In this paper,a theoretical model of a pneumatically-driven split-Stirling-cycle cryocooler with clearance-phase-adjustor,which described in Part 1,has been established to simulate its dynamic performances．Adiabatic calculation of the linear compressor is adopted and an experimentally rectified displacement of compression piston is introduced in the theoretical model．The working characteristics of compressor motor and the principal losses of cooling,including regenerator inefficiency loss,solid conduction loss,shuttle loss,pump loss and radiation loss,are taken into account．The displacer motion is modelled as a single-degree-of-freedom(SDOF)forced system．A set of goveming equations Call be solved by a numerical method to simulate the cooler's performances．The simulation model is useful for understanding the physical processes occurring in the cooler,and also for predicting the cooler'S performances．