A method of rotating a generator using an internal combustion engine such as a diesel engine or a gasoline engine. Internal combustion engines usually use a reciprocating type, in which fuel and air are compressed in a cylinder and then exploded, and the expansion energy is converted into rotational energy by a piston-crank mechanism. There are four-stroke and two-stroke internal combustion engines, but for power generation, four-stroke diesel engines with a high compression ratio of about 15 are generally used. Although the output of diesel engines is relatively small, up to about 20,000 kW, their thermal efficiency is high at 35 to 45%, and they are easily constructed and can be started and stopped, so they are widely used for power generation on remote islands and as emergency power sources. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
ディーゼルエンジン,ガソリンエンジンなど内燃機関を用いて発電機を回転させる方式。内燃機関は通常往復動式を利用しており,その場合シリンダー内で燃料と空気を圧縮し,それを爆発させたときの膨張エネルギーをピストン・クランク機構により回転エネルギーに変換する。内燃機関には4サイクル機関と2サイクル機関とがあるが,発電用には4サイクルで,圧縮比が15程度と高いディーゼルエンジンが一般に用いられる。ディーゼルエンジンの出力は2万kW程度までと比較的小さいが,熱効率は35~45%と高く,構造が簡単で始動停止も容易であることから離島の発電用や非常用電源として広く利用されている。
出典 株式会社平凡社世界大百科事典 第2版について 情報 |
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