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首页> 外文期刊>Environmental Science & Technology >Differentiating the Effects of Climate Change-Induced Temperature and Streamflow Changes on the Vulnerability of Once-Through Thermoelectric Power Plants
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Differentiating the Effects of Climate Change-Induced Temperature and Streamflow Changes on the Vulnerability of Once-Through Thermoelectric Power Plants

机译：区分气候变化引起的温度和流量变化对直通式热电厂脆弱性的影响

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摘要

Thermoelectric power plants with once-through cooling systems generated 30% (similar to 300 GW) of U.S. electricity in 2016. Factors that reduce once-through cooling capacity and thus power output are environmental regulations, warming surface waters, and drought. The latter two may become more frequent as global climate changes. Previous research indicates that reduction in power plant capacity caused by environmental regulations can be significant while that by surface water warming is minor. Here, we address the effect of droughts on power output, which until now has remained conflated with temperature impacts. We do this using a widely used electricity generation model alongside hourly operational and meteorological data for 52 once-through plants located across the U.S. The effect of drought on plant output is examined for different water-availability and temperature scenarios, with and without regulations on plant water discharge. We find that if surface waters warm 3 degrees C and river discharges drop 20%, droughts would account for = 20% capacity reduction depending on the plant, warming surface waters = 2.3%, and environmental regulations up to 80%. This suggests that maintaining environmental regulations will require the continued conversion of plant cooling systems from once through to recirculating, and mitigating climate impacts will require more stringent drought-specific watershed management.
机译：具有直通式冷却系统的热电厂在2016年产生了30％（约300 GW）的美国电力。降低直通式冷却能力从而降低功率输出的因素有环境法规，地表水变暖和干旱。随着全球气候变化，后两者可能会变得更加频繁。先前的研究表明，由环境法规引起的发电厂容量减少可能是显着的，而由地表水变暖引起的容量减少则很小。在这里，我们讨论干旱对电力输出的影响，直到现在，干旱仍与温度影响混为一谈。我们使用广泛使用的发电模型，并结合全美国52家一次性工厂的每小时运行和气象数据，在不同的水利用率和温度情况下，对干旱对工厂产量的影响进行了检查，无论有无工厂法规排水。我们发现，如果地表水温度升至3摄氏度，河流排放量下降20％，则干旱将导致<= 20％的容量下降，具体取决于工厂，地表水变暖== 2.3％和环境法规高达80％。这表明，维持环境法规将要求工厂冷却系统从一次转换到循环再用，减轻气候影响将需要更严格的针对干旱的流域管理。

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  • 来源
    《Environmental Science & Technology》 |2019年第7期|3969-3976|共8页
  • 作者

    Henry Candise L.; Pratson Lincoln F.;

  • 作者单位

    Duke Univ, Nicholas Sch Environm, 9 Circuit Dr,Box 90328, Durham, NC 27708 USA;

    Duke Univ, Nicholas Sch Environm, 9 Circuit Dr,Box 90328, Durham, NC 27708 USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
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