Heater operation of steam turbine thermal system will effect greatly on unit's economy.
汽轮机热力系统中的加热器的运行情况，对机组经济性有较大的影响。
Each part variety of steam turbine thermal system can cause different infections on unit's economic.
汽轮机热力系统各种局部变化对机组经济性有不同的影响。
The efficiency of a coal-fired thermal plant is typically in the range of 30%-35%. In a combined cycle gas turbine system running on natural gas, the maximum efficiency is in the range 45%-50%.
烧煤的热电厂的效率通常在30%到50%之间，使用天然气的联合循环燃气轮机系统最大效率在45%到50%之间，而很多专家认为高温燃料电池的效率可达到80%至85%。
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