Yong-Ju Hong, Junseok Ko, Hyo-Bong Kim, Seong-Je Park
언어
영어(ENG)
URL
https://www.earticle.net/Article/A286962
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초록
영어
An integral crank driven Stirling cryocooler is solidly based on concepts of direct IR detector mounting on the cryocooler’s cold finger, and the integral construction of the cryocooler and Dewar envelope. Performance factors of the cryocooler depend on operating conditions of the cryocooler such as a cyclic mean pressure of the working fluid, a rotational speed of driving mechanism, a thermal environment, a targeted operation temperature and etc.. At given charging condition of helium gas, the cyclic mean pressure of helium gas in the cryocooler changes with temperatures of the cold end and the environment. In this study, effects of the cyclic mean pressure of helium gas on performances of the Stirling cryocooler were investigated by numerical analyses using the Sage software. The simulation model takes into account thermodynamic losses due to an inefficiency of regenerator, a pressure drop, a shuttle heat transfer and solid conductions. Simulations are performed for the performance variation according to the cyclic mean pressure induced by the temperature of the cold end and the environment. This paper presents P-V works in the compression and expansion space, cooling capacity, contribution of losses in the expansion space.
목차
Abstract 1. INTRODUCTION 2. SIMULATION MODEL OF A STIRLINGCRYOCOOLER 3. SIMULATION RESULTS 3.1. Case for Given Cyclic Mean Pressure 3.2. Case for Given Condition of Charging Pressure with Variation of Environmental Temperature 3.3. Case for Given Condition of Charging Pressure with Variation of Cold End Temperature 4. SUMMARY ACKNOWLEDGMENT REFERENCES
키워드
Stirling cryocoolerCyclic mean pressureCooling capacityLoss
저자
Yong-Ju Hong [ Korea Institute of Machinery & Materials ]
Corresponding author
Junseok Ko [ Korea Institute of Machinery & Materials ]
Hyo-Bong Kim [ Korea Institute of Machinery & Materials ]
Seong-Je Park [ Korea Institute of Machinery & Materials ]