Theoretical and Experimental Investigation on Comparing the Efficiency of a Single-Piston Valved Linear Compressor and a Symmetrical Dual-Piston Valved Linear Compressor

The efficiency of the valved linear compressor is very important to space J-T throttling refrigerator. To compare single-piston (SVLC) and symmetrical dual-piston (SDVLC), this paper explores factors that affect efficiency. Firstly, analyzes mechanical vibration system compressor, result shows highest when external force (current) in phase with speed. Then numerical solutions current velocity are obtained. By comparing variance same direction rate between SVLC SDVLC, reason for difference explained. Subsequently, performance SDVLC tested on experimental system. more phase, isentropic efficiency, volume motor all higher than SVLC.