超低环温行波热声热泵中的回热器研究  

Study on Regenerator of a Novel Traveling-Wave Thermoacoustic Heat Pump Operating in Ultra-Low Temperature Air Environment

作　　者：杨卓[1,2] 陈燕燕[1] 吴张华[1] 罗二仓[1] 

机构地区：[1]中国科学院低温工程学重点实验室,北京100190 [2]中国科学院研究生院,北京100039

出　　处：《工程热物理学报》2013年第5期808-811,共4页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.50890181);国家973项目(No.2010CB227303)

摘　　要：为了克服常规热泵在低温下压比过大和效率降低的问题,提出了一种全新的低环温电驱动双作用行波热声热泵。对该新型热泵使用的多种回热器填充物进行了模拟优化计算,计算结果表明丝径小的回热器获得的系统最佳效率较高,但是丝径越小,获得最佳效率所对应的回热器孔隙率也越大,减小丝径能有效提升泵热量。计算结果为合理选择电驱动双作用行波热泵的回热器填充物提供了指导。In ultra-low air temperature environment, conventional heat pumps have several technical problems, such as high pressure ratio and low efficiency. To overcome the problems, a novel linear compressor driven double-acting traveling-wave thermoacoustic heat pump is studied in the paper. Through simulation and optimization, the influence of three kinds of regenerator fillers on the heat pump thermodynamic performance is revealed. The results show that a smaller wire diameter of the regenerator filler with higher porosity can lead to a higher thermodynamic emciency. In addition, reducing the wire diameter can increase heat pump capacity. The results provide guidance for designing an efficient regenerator of the double-acting thermoacoustic heat pump operating in ultra-low ambient temperature region.

关 键 词：双作用 低温热泵 热声 回热器 

分 类 号：TK11[动力工程及工程热物理—热能工程]