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District Energy Efficiency Improvement with Trigeneration: Basic Considerations and Case Studies

机译:三联发电提高地区能源效率:基本考虑因素和案例研究

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摘要

It is well known that with combined heat and power (cogeneration) systems one can reach 80-90 percent joint energy production efficiency, while it is only 30-40 percent for separated electrical power and 80-90 percent for heating-only systems. A basic requirement is that the ratio between the two energy forms must be within certain limits. Average electrical power consumption varies within a 30-50 percent range for residential, institutional, and average industrial buildings, while it does within 200-300 percent (in the temperate zone) for heating during a full year of operation. Summer―low heating load―is especially critical for load balance. This balance and the total efficiency can be improved by utilizing absorption―cooling. Cooling is otherwise a requirement for summer operations for many district-heated buildings. Basic considerations and case studies are discussed in this article. Some of the results were discussed in previous presentations; this version contains new results, too.
机译:众所周知,在热电联产系统中,联合能源的生产效率可以达到80-90%,而分离式电力只有30-40%,仅加热系统只有80-90%。基本要求是两种能量形式之间的比率必须在一定范围内。住宅,公共机构和一般工业建筑物的平均电力消耗在30%至50%的范围内变化,而在全年运行中,其平均供暖功率在200%至300%(在温带地区)之间变化。夏季(低热负荷)对于平衡负荷尤为关键。这种平衡和总效率可以通过利用吸收冷却来提高。否则,对于许多区域供热的建筑物,夏季运行都需要冷却。本文讨论了基本注意事项和案例研究。在先前的演讲中讨论了一些结果;此版本也包含新结果。

著录项

  • 来源
    《Energy Engineering》 |2003年第2期|p.66-80|共15页
  • 作者

    Laszlo Emho;

  • 作者单位

    BERT(Budapest Power Plant Co.), Budapest, Hungary;

  • 收录信息 美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 房屋建筑设备;
  • 关键词

  • 入库时间 2022-08-18 00:29:29

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