BTU/Btu - Beat ty
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Abbreviation for British thermal unit, the basic unit of heat in the imperial system, also known as British thermal unit in Japan. It is the amount of heat required to raise the temperature of 1 avoirdupois water by 1°F. The exact amount depends on the temperature of the water, and there are various definitions, but it is approximately 1055 J (joules) (about 252 cal). The multiple unit is therm, which is 10 5 Btu. [Miyake Fumi] Source: Heibonsha World Encyclopedia, 2nd Edition Information |
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ヤード･ポンド法における熱量の基本単位British thermal unitの略語で，日本では英熱量ともいう。1常用ポンドの水の温度を1゜Fだけあげるのに要する熱量である。正確には水の温度に依存し，各種の定義があるが，およそ1055J(ジュール)(約252cal)である。倍量単位は105Btuのサームである。【三宅 史】
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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