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Exergy analysis of refrigerators for large scale cooling systems

K. Löhlein, T. Fukano1993年Fusion Engineering and DesignIF 1.7出版社

AbstractFacilities with superconducting magnets require cooling capacity at different temperature levels and of different types (refrigeration or liquefaction). The bigger the demand for refrigeration, the more investment for improved efficiency of the refrigeration plant is justified and desired.Refrigeration cycles are built with discrete components like expansion turbines, cold compressors, etc. Therefore the exergetic efficiency for producing refrigeration on a distinct temperature level is significantly dependent on the ‘thermodynamic arrangement’ of these components. Among a variety of possibilities, limited by the range of applicability of the components, one has to choose the best design for higher efficiency on every level.Some influences are being quantified and aspects are given for a optimal integration of the refrigerator into the whole cooling system.

日本語訳

超電導磁石を有する施設では、異なる温度レベルおよび異なるタイプ(冷凍または液化)の冷熱能力が必要とされる。冷熱に対する需要が大きければ大きいほど、冷凍プラントの効率向上のための投資が正当化され、また望まれる。冷凍サイクルは、膨張タービンや低温圧縮機などの個別の構成要素で構築される。したがって、特定の温度レベルで冷熱を生成するためのエクセルギー効率は、これらの構成要素の「熱力学的配置」に大きく依存する。様々な可能性の中で、構成要素の適用範囲によって制限されるが、あらゆるレベルでより高い効率を得るために最適な設計を選択しなければならない。いくつかの影響が定量化され、冷凍機を冷却システム全体に最適に統合するための側面が示されている。

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