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Impact of the use of a hybrid turbine inlet air cooling system in arid climates

机译：在干旱气候下使用混合涡轮机进气冷却系统的影响

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摘要

Cooling the air entering the compressor section of gas turbine power plants is a proven method of increasing their power output, especially during peak summer demand, and it is increasingly being used in power plants worldwide. Two turbine inlet air cooling (TIAC) systems are widely used: evaporative cooling and mechanical chilling. In this work, the prospects of using a hybrid turbine inlet air cooling (TIAC) system are investigated. The hybrid system consists of mechanical chilling followed by evaporative cooling. Such a system is capable of achieving a significant reduction in inlet air temperature that satisfies the desired power output levels, while consuming less power than the conventional mechanical chilling. Furthermore, less water than conventional evaporative cooling can be used, thus combining the benefits of both approaches is proposed in this study. Two hybrid system configurations are studied. In the first configuration, the first stage of the system uses water-cooled chillers that are coupled with dry coolers such that the condenser cooling water remains in a closed loop. In the second configuration, the first stage of the system uses water-cooled chillers but with conventional cooling towers. An assessment of the performance and economics of those two configurations is made by comparing them to a conventional mechanical chilling and using realistic data. It was found that the TIAC systems are capable of boosting the power output of the gas turbine by 10% or more (of the power output of the ISO conditions). The cost operation analysis shows clearly that the hybrid TIAC method with wet cooling has the advantage over the other methods and It would be profitable to install it in the new gas turbine power plants.
机译：冷却进入燃气轮机发电厂压缩机部分的空气是增加其功率输出的一种行之有效的方法，尤其是在夏季高峰期需求期间，并且已在全世界的发电厂中得到越来越多的使用。广泛使用两种涡轮机进气冷却（TIAC）系统：蒸发冷却和机械冷却。在这项工作中，研究了使用混合涡轮进气冷却（TIAC）系统的前景。混合系统由机械冷却和蒸发冷却组成。这样的系统能够显着降低进气温度，从而满足所需的功率输出水平，同时消耗的功率比常规机械冷却少。此外，可以使用比常规蒸发冷却更少的水，因此在本研究中提出了结合两种方法的优点。研究了两种混合系统配置。在第一种配置中，系统的第一阶段使用与干式冷却器相连的水冷式冷却器，以使冷凝器冷却水保持闭环。在第二种配置中，系统的第一阶段使用水冷式冷却器，但使用传统的冷却塔。通过将这两种配置与常规机械冷却进行比较并使用实际数据，可以对这两种配置的性能和经济性进行评估。已经发现，TIAC系统能够将燃气轮机的功率输出提高10％或更多（相当于ISO条件下的功率输出）。成本运行分析清楚地表明，采用湿式冷却的混合TIAC方法具有优于其他方法的优势，将其安装在新的燃气轮机发电厂中将是有利可图的。

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  • 来源
    《Energy Conversion & Management》 |2013年第11期|214-223|共10页
  • 作者

    Hany A. Al-Ansary; Jamel A. Orfi; Mohamed E. Ali;

  • 作者单位

    King Saud University, College of Engineering, Mechanical Engineering Department, P.O. Box 800, Riyadh 11421, Saudi Arabia;

    King Saud University, College of Engineering, Mechanical Engineering Department, P.O. Box 800, Riyadh 11421, Saudi Arabia;

    King Saud University, College of Engineering, Mechanical Engineering Department, P.O. Box 800, Riyadh 11421, Saudi Arabia;

  • 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

    Gas turbine inlet air; Energy saving; Mechanical chiller; Evaporative cooler;

    机译：燃气轮机进气节约能源;机械冷却器;蒸发冷却器;

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