クライオクーラ〔2〕 : 極低温冷凍機の基礎 Cryocooler  : Fundamental Review of Cryogenic Refrigerators
Part II of this study covers the variations of loss mechanisms for not only cryocoolers, but also compressors. To do so, it is inevitable to understand the efficiency of a system in terms of percent Carnot and/or a coefficient of performance. Once readers review these concepts, the next step is how to minimize the losses and optimize the entire refrigeration cycle. As described in part I of this study, a GM cryocooler is employed to study the loss mechanisms in detail. By introducing the concepts of energy flow, work flow, enthalpy flow and entropy flow, it is fairly straight-forward to visualize the refrigeration process. This approach is effective to optimize the refrigeration cycle, and a numerical method is used to demonstrate optimization of the GM cooler. To review the historical background of GM coolers, the Solvay cycle is also described to compare efficiencies.
- 低温工学 = Journal of the Cryogenic Society of Japan
低温工学 = Journal of the Cryogenic Society of Japan 41(10), 420-427, 2006-10-25
CRYOGENICS AND SUPERCONDUCTIVITY SOCIETY OF JAPAN