预热器

Experiments are carried out for two types unusual eddying tube fuel perheater,and the results show the total heat transfer coefficient is 1.2～1.262 times and friction factor is 2.8～9.0 percent higher than that of smooth tubes with the same size.

对研制的两种不同结构形式的异形凹槽旋流管式燃油预热器进行了试验研究，结果表明研制的燃油预热器总传热系数要比相同尺寸光滑管式预热器提高20％～26.2％，而油侧压降仅增大2.8％～9.0％。

The tri-strings suspension preheater system is composed of three strings cyclones,with gas flows from bottom to top paralleling and powder flows from top to down through each cyclone in a series.

三系列预热系统是将三列自下而上并行的气流与自上而下逐级串行的料流结合为一体的新型预热器系统，该构成方式能够显著提高预热器单体内的固气质量比。

The problem of wind leakage in rotary air preheater was discussed in this paper.

本文对回转式空气预热器漏风问题进行了研究和分析，得出直接漏风是空气预热器漏风的主要因素。

Resistance in preheater system is discussed and index for evaluating preheater resistance is raised.

对预热器系统的阻力进行了论述，提出了评价预热器系统阻力的指标要求，并对预热器系统降阻措施及要求进行了阐述。

The steam chest ,vapor separators,preheater and surface condenser are designed and constructed for an internal pressure of 1 bar gauge and full vacuum at 121 ℃ except as follows .the shellside of the first effect chest is designed for an internal pressure of 2 bar gauge and full vacuum at 135℃.the bubeside of the prehearter and surface condenser are designed for an internal pressure of 7 bar gauge and full vacuum at 121℃.the equipment is designed and constructed in accordance with asme.certificates are provided.

蒸发分离室，蒸汽室，预热和冷凝器要设计结构内部能够承压1 bar 和在121 ℃充满真空。一效蒸汽室壳侧要设计成能够承压2 bar 和在135 ℃。预热器的管侧和表面冷凝器设计成7 bar 和在121 ℃。设备的设计和制造要符合ASME。要提供证明。

The dew-point corrosion of the air preheater in the coker furnace was discussed in consideration of operation, maintenance and improvements.

空气预热器运行的好坏直接影响到加热炉的热效率，文章结合焦化装置加热炉空气预热器的使用、维修、改进等，论述了预热器存在的露点腐蚀问题。

But for the mesothermal and low temperature power generation by waste heat introduced distributing hot air,the power generated by unit heat enery is then increased greatly——by distributing the hot air entered the preheater,the ratio of gas and solid is decreased,the heat efficiency of the pr.

采用热气体分流的中低温余热发电技术，即：将入预热器系统的热气体予以分流，降低了预热器内气固比，提高了预热器系统热效率；同时使原预热器出口烟气中的低级热能转移至温度较高的烟气中，热能得到升级，可大幅度提高其余热发电量。

The sectors are subdividable for higher preciseness. The temperature distributions of the gas, air and hea...

给出的不同类型回转式空气预热器的具体算例和分析表明，该方法具有计算精度高、适用范围广的特点，既适用于两分仓回转式空气预热器，也适用于三分仓回转式空气预热器；既可以用于回转式空气预热器的热力计算，也可以用于对其进行变工况分析计算。

When the temperature of smoke inpouring air preheater increases, aggregate fuels and sediments will combust in stated temperature conditions.

这些起火起因于燃料油的不充分燃烧，其结果是未充分燃烧的燃料油凝结和聚集在空气预热器的部件上，当进入空气预器的烟气温度增高时，沉积的燃料油被烘烤，当达到一定温度条件时，则可点燃这些燃料油污沉积物，造成火灾发生，这通常被称为空气预热器的二次燃烧。

From simulations and data of fire site, most air preheater fire often appear when boiler is started in cool state and standby which fuels of insufficient combustion coagulate and congregate on the parts of air preheater. When the temperature of smoke inpouring air preheater increases, aggregate fuels and sediments will combust in stated temperature conditions. It is called the second combustion of air preheater.

这些起火起因于燃料油的不充分燃烧，其结果是未充分燃烧的燃料油凝结和聚集在空气预热器的部件上，当进入空气预器的烟气温度增高时，沉积的燃料油被烘烤，当达到一定温度条件时，则可点燃这些燃料油污沉积物，造成火灾发生，这通常被称为空气预热器的二次燃烧。

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。