论文部分内容阅读
通过对直线压缩机驱动的脉冲管制冷整机系统的效率进行理论分析,发现惯性管的阻抗不仅对脉冲管制冷机的效率有重要影响,而且会改变制冷机的阻抗,从而进一步影响压缩机的电声转换效率.借助于湍流修正模型,解决了惯性管阻抗由于受到湍流转捩的影响而难以预测的问题,因此设计出了一台高性能的直线压缩机驱动的脉冲管制冷机.在电输入功率为127W、制冷温度为77K的情况下获得了9.4W的制冷量,整机相对卡诺效率达到了19.8%.
Through the theoretical analysis of the efficiency of linear compressor-driven pulse tube refrigeration system, it is found that the impedance of the inertial tube not only has an important effect on the efficiency of the pulse tube refrigerator, but also changes the impedance of the refrigerator, further affecting the performance of the compressor Electro-acoustic conversion efficiency.Through the turbulence correction model to solve the inertial tube impedance due to turbulence caused by the impact of the unpredictable problems, we designed a high-performance linear compressor driven pulse tube refrigerator in the electricity Input power of 127W, the cooling temperature of 77K obtained a cooling capacity of 9.4W, the relative machine Carnot efficiency reached 19.8%.