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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Human power ： ウィキペディア英語版 Human power Human power is work or energy that is produced from the human body. It can also refer to the power (rate of work per time) of a human. Power comes primarily from muscles, but body heat is also used to do work like warming shelters, food, or other humans. World records of power performance by humans are of interest to work planners and work-process engineers. The average level of human power that can be maintained over a certain duration of time, say over the extent of one minute or one hour is interesting to engineers designing work operations in industry. Human power is sometimes used to generate electricity that is stored. ==Available power== A trained cyclist can produce about 400 watts of mechanical power for an hour or more, but adults of good average fitness average between 50 and 150 watts for an hour of vigorous exercise. A healthy well-fed laborer over the course of an 8-hour work shift can sustain an average output of about 75 watts.〔Eugene A. Avallone et. al, (ed), ''Marks' Standard Handbook for Mechanical Engineers 11th Edition '', Mc-Graw Hill, New York 2007 ISBN 0-07-142867-4 page 9-4〕 The yield of electric power is decreased by the inefficiency of the human-powered generator, since all real generators will incur some losses during the energy conversion process. While some exercise equipment has been fitted with generators, the amount of energy collected is of low value compared to the cost of the conversion equipment.〔Tom Gibson, ''Turning sweat into watts'', ''IEEE Spectrum'' Volume 48 Number 7 July 2011, pp. 50-55〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Human power」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.