カルノーサイクルとエネルギー効率について　改善されたエネルギー変換理論とエネルギー効率について

永田 勝

doi:10.1299/kikaib.62.3976

カルノーサイクルとエネルギー効率について　改善されたエネルギー変換理論とエネルギー効率について

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永田勝

書誌事項

タイトル別名

Carnot Cycle and Energy Efficiency. Improved Theory of Energy Conversion and Energy Efficiency.
カルノーサイクルトエネルギーコウリツニツイテカイゼンサレタエネ

公開日: 1996

DOI

10.1299/kikaib.62.3976

公開者: 一般社団法人日本機械学会

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説明

In order to analyze the energy flow in the Carnot cycle, 3 concepts of the first law of thermodynamics are strictly applied. These are the law of conservation of energy, the equal treatment of all forms of energy regardless of form and the consecutive conversion of energy. For example, the energy supplied to the cycle is summed up not only heat energy but also other forms, and, the energy efficiency [η_EN] is adopted rather than the thermal efficiency [η_th] . As a result, it is shown that the energy efficiency of the Carnot cycle is a function of not only the higher and the lower source temperature but also the compression ratio in the isothermal process and it is zero when the compression ratio is 1.