热效率

Endothermic process of preheating the starting point of the water temperature has increased heat-absorbing the average temperature of the process, thus the thermal efficiency also increased.

吸热过程中预热水的起点温度提高了，吸热过程的平均温度，因而热效率也就提高了。

The copolymer derived from the copolymerization in high capacity kettle were testified that copolymerization between AN and MMA occurred. The microcapsules in the films are distributed in the copolymer film matrix. The heat-absorbing temperatures and heat-evolving temperatures of the films are almost the same as that of the MOCT, respectively. In addition, the enthalpy efficiency of MOCT, the melting enthalpy and the crystallizing enthalpy rises with the contents of MOCT increasing.The decomposition temperature of copolymers in the films containing various contents of MOCT decreases with the contents of MOCT increasing.

采用30升聚合釜合成了丙烯腈—甲基丙烯酸甲酯共聚物，证实了丙烯腈和甲基丙烯酸甲酯发生了共聚反应；正十八烷微胶囊分散和镶嵌到了共聚物膜基体中；正十八烷微胶囊含量不同的共聚物膜的吸热温度放热温度与纯正十八烷微胶囊的吸放热温度基本相同；随着正十八烷微胶囊含量的增加，共聚物膜的热焓和热效率逐渐增加；共聚物膜中的共聚物的热稳定性温度随着正十八烷微胶囊含量的增加逐渐减小，共聚物膜的结晶度则有所增大。

Therefore we need use one kind of new technology to solve this thermal efficiency bottleneck problem, and under this kind of form the condensation gas-fires hot-blast stove is produced.

因此这就迫切要求采用一种新的技术来解决目前热风炉热效率的瓶颈问题，冷凝式燃气热风炉就是在这种形式下产生的。

More attention should be paid to the thermal characteristics of heat exchanger of hot-blast stove in order that hot-blast stoves designed are optimal and harmonious in thermal efficiency, temperature efficiency and lifetime.

在设计、生产时应注意到热风炉换热系统的这些热工特性，以使生产的热风炉能够达到热效率、温度效率及寿命的优化统一。

In this paper, in view of the importance of heat exchanger of hot-blast stove, thermodynamic characteristics of heat exchanger system of hot-blast stove are expounded according to thermodynamic theories, and they are inlet flue gas temperature, outlet air temperature, structure and the scope of temperature efficiency and heat changing efficiency.

本文从热工理论出发，介绍了换热系统在热风炉中的重要地位。通过热风炉用换热系统与余热利用换热系统的对比，阐述了热风炉换热系统的热工特性，其中包括：入口烟气温度、出口空气温度、换热器的结构以及温度效率和换热效率的取值范围。

Homogeneous charge compress ignition combustion is also an effective way to improve the fuel economy of natural gas engines with very low NOx emissions.

均质充量压缩着火燃烧也是提高稀燃天然气发动机热效率的方法之一，并有很低的NO排放。

A homogeneous charge compression ignition method can enhance the thermal efficiency of a DI diesel engine and reduce exhaust emissions.

均质压燃方式可以提高直喷式柴油引擎的热效率与降低排气污染物。

In addition, the HC and CO emissions are much lower than the emissions of HCCI and the indicated thermal efficiency of HCCI/DI is higher than the prototype diesel engine.Furthermore, without spark ignition and hot EGR, the HCCI/DI combustion of in-cylinder directly injected iso-octane is achieved with the induction of thermal and chemical active atmosphere generated by the HCCI combustion of port injected n-heptane.

通过对燃料理化特性、预混合率和缸内直喷时刻这三个影响因素的优化，实现了对HCCI/DI燃烧相位、放热分布和形态的调制，使发动机的负荷拓展到全负荷，在全负荷范围内NOx排放低于40×10-6排放水平，HC和CO排放显著低于HCCI燃烧，同时发动机指示热效率η_i高于原机柴油直喷的水平。

By applying water heat medium technolog y and finned tube conduction instrument,CO waste heat boiler had rebuilt.

利用水热媒技术，采用翅片管传热件，对CO废热锅炉进行了节能改造，运行证明，改造后锅炉的蒸汽过热能力、热效率明显提高，烟气全部回收，说明此次改造十分成功，具有良好的推广应用价

Presents the comparison between the thermodynamic performance of oil-burning closed STIG cycle and integrated gasification closed STIG cycle and analysis of the influence of reheating on efficiency of the two cycles and concludes that for IGCSTIG cycle, reheating can improve the efficiency only at lower inlet temperature of turbine and higher pressure ratio.

给出了燃料改用煤气后，燃油的与燃煤气的闭式注蒸汽燃气轮机循环的性能比较，同时分析了两循环分别采用一次中间再热后，再热措施对两循环热效率的不同影响。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。