解读EPA新CO2规定:联合循环表现良好

现有技术,如联合循环发电,可用于满足EPA更严格的二氧化碳排放限制

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这篇文章最初发表于《大众科学》的前博客网络,仅反映作者观点,不一定代表《大众科学》的立场。


周四晚些时候开始有消息传出,关于美国环境保护署针对新的天然气和燃煤发电厂的二氧化碳排放规定。《纽约时报》报道了对预计公告的概要(在发布时,该公告尚未正式发布)。虽然碳捕获技术正在针对燃煤电厂进行讨论,但看起来联合循环发电可能足以使一些发电厂在无需任何捕获技术的情况下达到排放限制——至少对于天然气发电厂而言是这样。这是因为你可以通过蒸汽轮机(以及燃气轮机)从相同单位的燃料中提取额外的功。

以下是二氧化碳排放规定的细分以及联合循环发电的表现(通过我的Twitter


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我在这些计算中使用了EIA的排放因子热效率。我在对EIA和EPA的快速搜索中只找到了天然气的数据,因此如果任何人有燃煤联合循环的热效率数据,请随时发送给我,我将更新这篇文章。

更新:Costa Samaras 发送了来自NETL分析的燃煤电厂二氧化碳排放率(PDF)。看起来即使是来自通用电气、壳牌和康菲石油的IGCC电厂,在没有捕获技术的情况下也无法达到EPA的目标。

David Wogan is an engineer and policy researcher who writes about energy, technology, and policy.

David's academic and professional background includes a unique blend of technology and policy in the field of energy systems. Most recently, David worked at Austin Energy, a Texas municipal utility, implementing a Department of Energy stimulus grant related to energy efficiency. Previously, David was a member of the Energy & Climate Change team at the White House Council on Environmental Quality for the Obama Administration.

David holds two Master's degrees from The University of Texas at Austin in Mechanical Engineering and Public Affairs. While at UT, David was a researcher in the Webber Energy Group, where his research focused on advanced biofuel production to offset petroleum use in the transportation sector. David holds a Bachelor's of Science degree in Mechanical Engineering from The University of Texas at Austin, where he researched nuclear non-proliferation measurement technology.

David is a 2013 Aspen Institute Journalism Scholar, joining a select group of journalists from Slate, ABC News, and The New York Times.

David lives in Austin, Texas. Follow along on Twitter or email him at david.wogan@me.com.

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