解讀EPA新CO2規定:聯合迴圈表現良好

現有技術,如聯合迴圈發電,可用於滿足EPA更嚴格的二氧化碳排放限制

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這篇文章最初發表於《大眾科學》的前部落格網路,僅反映作者觀點,不一定代表《大眾科學》的立場。


週四晚些時候開始有訊息傳出,關於美國環境保護署針對新的天然氣和燃煤發電廠的二氧化碳排放規定。《紐約時報》報道了對預計公告的概要(在釋出時,該公告尚未正式釋出)。雖然碳捕獲技術正在針對燃煤電廠進行討論,但看起來聯合迴圈發電可能足以使一些發電廠在無需任何捕獲技術的情況下達到排放限制——至少對於天然氣發電廠而言是這樣。這是因為你可以透過蒸汽輪機(以及燃氣輪機)從相同單位的燃料中提取額外的功。

以下是二氧化碳排放規定的細分以及聯合迴圈發電的表現(透過我的Twitter


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我在這些計算中使用了EIA的排放因子熱效率。我在對EIA和EPA的快速搜尋中只找到了天然氣的資料,因此如果任何人有燃煤聯合迴圈的熱效率資料,請隨時傳送給我,我將更新這篇文章。

更新:Costa Samaras 傳送了來自NETL分析的燃煤電廠二氧化碳排放率(PDF)。看起來即使是來自通用電氣、殼牌和康菲石油的IGCC電廠,在沒有捕獲技術的情況下也無法達到EPA的目標。

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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