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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The economy of gas-fired infrared radiant heating system is analyzed with the engineering example.

通过工程实例，分析了燃气红外线辐射供暖系统的经济性。

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A testing system of porous media gas-fired boiler was set, and experiments were done.

建立了多孔介质燃气炉试验系统，对燃气炉进行了试验研究。

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However, since Brazil switched on more gas-fired thermal plants in October, to cope with growing demand and ease the pressure on the hydroelectric power system, costs have increased significantly.

BBC: Brazil drought stokes worries over energy shortages