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Energy-return-on-energy-invested for natural gas hydrates

机译:天然气水合物的能源投资回报率

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摘要

A recent paper in Fuel [1] is concerned with thermal removal of natural gas from hydrates. Such hydrates are of course clathrate structures, and the ice 'cage' containing methane has to be melted in utilisation of the hydrates.rnThe present author has estimated the upper bound on the energy-return-on-energy-invested (EROEI) for natural gas from hydrates as about 20. He did so on the basis of comparing heat required for melting with heat released on combustion of methane liberated, the estimate being an upper bound because adiabatic conditions were assumed for the melting operation. He also made the point that if the melting is by means of low-quality heat the upper bound might lose its significance, a point which will be more fully explained in the following paragraph.rnOne would not use for example superheated steam to obtain natural gas from hydrates, as their temperature is low enough for heat transfer from something at about room temperature, possibly seawater, to effect the melting.
机译:燃料[1]中的最新论文涉及从水合物中去除天然气。这些水合物当然是笼状结构,利用甲烷水合物必须将含甲烷的冰“笼”融化。作者估算了天然能源的能量投资回报率(EROEI)的上限。从水合物中产生的气体大约为20。他是根据熔化所需的热量与甲烷燃烧释放的热量进行比较而得出的,该估计值是一个上限,因为假定熔化操作采用了绝热条件。他还指出,如果通过低质量的热量进行熔化,上限可能会失去意义,这一点将在以下段落中更全面地解释。rn一个人不会使用例如过热蒸汽来获取天然气由于水合物的温度低到足以从大约室温下的东西(可能是海水)传热而实现熔化的温度,所以它们来自水合物。

著录项

  • 来源
    《Fuel》 |2009年第8期|1531-1531|共1页
  • 作者

    J.C. Jones;

  • 作者单位

    School of Engineering, University of Aberdeen, AB 24 3UE, United Kingdom;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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