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%。
The ideal cycle heat efficiency used nowadays is affected by the relative internal efficiency so it can't reflect the operation economic state of thermal system of steam turbine.
目前采用的汽轮机理想循环热效率受到相对内效率影响而不能准确反映汽轮机热力系统运行经济状态。
The optimization of the ecological function makes the entropy generation rate of cycle decrease greatly and the thermal efficiency increase with the cost of a little decreasing of the power output.
生态学优化以牺牲小部分输出功率为代价，较大地降低了循环的熵产率，而且在一定程度上提高了热机效率。
Concurrently analyzed is that improvement of effective thermal efficiency after rise in compression ratio and water injection is resulted from thermal efficiency promotion of fuel-air ideal cycle.
同时分析了提高压缩比并掺水蒸气后有效热效率提高的主要来源是燃料—空气理想循环热效率的提高。
This paper describes the principles of pulsed detonation engines (PDE) a preliminary analysis on thermal efficiency, cycle process and Performance of pulsed detonation engines has been made.
阐述了脉冲爆震发动机工作原理，对脉冲爆震发动机热效率、循环过程及性能进行了初步分析。
Dual working fluid parallel-compound cycle engine is a relatively new type of thermal engine which is characterized by a high efficiency and enhanced specific power.
双工质平行-复合循环热机是一种较新的热机，它能达到高效率和高比功。
The mould had merits such as low cost, short development cycle and high precision, while it had defects of low surface strength and thermal efficiency.
该模具具有成本较低、开发周期短、精度较高等优点，但表面强度和热效率较低。
To counter the difficulty of traditional method, the parallel connection feed-forward network of calculation method for the actual cycle thermal efficiency of a steam turbine is proposed.
针对传统方法计算繁杂的问题，本文提出了基于双并联人工神经网络的汽轮机实际循环热效率计算方法。
Taking a triple pressure reheat HRSG in the gas-steam combined cycle as an example, a general expression of the steam turbine thermal efficiency to coupling parameter with the unfired HRSG is derived.
以三压有再热余热锅炉的燃气-蒸汽联合循环为例，推导出非补式余热锅炉型蒸汽轮机热效率关于耦合参数的关系式，在此基础上得到了燃气-蒸汽联合循环热效率关于耦合参数的关系式。
A new type of energy saving gas stove with heat recovery is proposed, which adopts heat regenerative cycle to improve gas stoves thermal efficiency.
提出一种带回热的新型节能燃气灶，即采用回热循环来提高燃气灶的热效率。
A new type of energy saving gas stove with heat recovery is proposed, which adopts heat regenerative cycle to improve gas stoves thermal efficiency.
提出一种带回热的新型节能燃气灶，即采用回热循环来提高燃气灶的热效率。
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