Performance Improvement of a Split-Type Stirling Cooler

• Main Authors: Jhen-SyuanHuang, 黃振軒
• Other Authors: Chin-Hsiang Cheng
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/64854126978569633662

碩士 === 國立成功大學 === 航空太空工程學系 === 102 === In this study, a split-type Stirling cooler with free floating displacer is analyzed by theoretical model. Volume, mass and pressure in different chambers are predicted as the transient varying positions of the piston and the displacer are obtained by means of a dynamic model. The temperature of the cold head is evaluated with the help of energy equation, which includes a variety of thermodynamic losses. Coefficient of performance can be determined as heat load is applied on the cold head. On the other hand, a prototype cooler using helium as the working gas is developed, which is able to achieve a no-load temperature of 109 K at operating speed of 2000 rpm and pressure of 5 atm.