翻訳と辞書 Words near each other ・ External cause ・ External cephalic version ・ External combustion engine ・ External commercial borrowing (India) ・ External compression headache ・ External counterpulsation ・ External Data Representation ・ External debt ・ External debt of Haiti ・ External debt of the Philippines ・ External degree ・ External examiner ・ External fertilization ・ External financing ・ External fixation ・ External floating roof tank ・ External flow ・ External gills ・ External granular layer ・ External granular layer (cerebral cortex) ・ External history ・ External iliac artery ・ External iliac lymph nodes ・ External iliac vein ・ External iliac vessels ・ External image ・ External independent evaluation ・ External inhibition ・ External intercostal membrane ・ External intercostal muscles Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク External floating roof tank ： ウィキペディア英語版 External floating roof tank An external floating roof tank is a storage tank commonly used to store large quantities of petroleum products such as crude oil or condensate. It comprises an open- topped cylindrical steel shell equipped with a roof that floats on the surface of the stored liquid. The roof rises and falls with the liquid level in the tank. As opposed to a fixed roof tank there is no vapor space (ullage) in the floating roof tank (except for very low liquid level situations). In principle, this eliminates breathing losses and greatly reduces the evaporative loss of the stored liquid. There is a rim seal system between the tank shell and roof to reduce rim evaporation. The roof has support legs hanging down into the liquid. At low liquid levels the roof eventually lands and a vapor space forms between the liquid surface and the roof, similar to a fixed roof tank. The support legs are usually retractable to increase the working volume of the tank. ==Advantages== External roof tanks are usually installed for environmental or economical reasons to limit product loss and reduce the emission of volatile organic compounds (VOC), an air pollutant. Normally (roof not landed), there is little vapor space, and consequently a much smaller risk of rim space fire. 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「External floating roof tank」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.