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美国一台53MW燃气轮机调峰机组经过改进,在高温夏季为林科恩电网(LincolnElectric System—LES)增加输出14MW,所增加设备投资费用不到200美元/kW。 一般电厂在温度高、湿度大的天气条件下采用蒸发冷却方法降低压气机的进气温度,以增加出力。LES和EPRI(美国电力研究院)则采取了一个更为有效的措施:使用非峰期电力在贮冰箱内大量制冰,当机组进行调峰运行时,电厂将打开“冰箱”,制冷循环水,通过盘管冷却进气和除湿,增加进气的密度,从而增加了透平的质量流量和电力输出。 围绕林科恩电网的罗克巴埃电厂的改进,工程技术人员进行了许多研究,提出了不少方案来满足夏季对电力增加的需求。其中一种是安装重新设计的进口导叶以增加这台1975年安装的燃气轮机的空气流量;另一
A 53MW gas turbine peaking unit in the United States has been refined to increase output by 14MW for the Lincoln Electric System-LES during hot summer months, with added equipment investment costs of less than $ 200 / kW. General power plant in the high temperature, humidity, the use of evaporative cooling method to reduce the compressor inlet temperature to increase the output. LES and EPRI (the American Electric Power Research Institute) have taken a more efficient approach: using off-peak electricity to make a large amount of ice in the storage, and when the unit is in peaking operation, the plant will open the “refrigerator”, the refrigeration cycle , Cooling air intake and dehumidification through the coil, increasing the density of the intake air, thereby increasing turbine mass flow and power output. Many improvements have been made to the Rokbaea power plant on Linköping Power Grid, where engineers and technicians have done a lot of research and put forward many proposals to meet the demand for increased power in summer. One of them is to install a redesigned inlet guide vane to increase the air flow rate of the 1975 installed gas turbine; the other