生物质成型燃料锅炉的结构特性研究

为了提高了锅炉的燃烧效率和热效率,根据生物质成型燃料特性及燃烧规律的试验分析,采用链条炉排,增强了炉膛燃烧强度;高且加长的的炉膛使得生物质成型燃料在炉膛内燃烧的燃烬程度增加：通过热工计算设计了生物质成型燃料锅炉,达到了设计的目的。     

180 kW生物质成型燃料热水锅炉的经济技术评价

针对上一代生物质成型燃料燃烧设备的缺陷而进行改进设计的适合于生物质成型燃料燃烧、供热量为180kW的新型生物质成型燃料专用燃烧设备,采用技术经济的动态分析法进行评价,得出该锅炉效益-费用比为1．721,净现值87899,投资回收期为1．28,内部收益率为51．34％,在技术经济上是可行的,具有较好的推广前景。     

石洞口电厂#4炉燃烧系统改造关键技术分析

石洞口电厂针对＃4锅炉燃烧系统存在的问题进行了改造。改造后，锅炉达到了1 20 MW不投油稳定燃烧和低NOX燃烧。对其改造的关键技术作了分析。分析结果表明，该技术对 存在类似问题的锅炉改造有着重要参考价值。并能为国内设计、制造厂家提供新的思路。     

广安电厂空气-燃料控制探讨

通过对广安电厂新建2×300MW机组的空气－燃料控制系统的结构和控制算法分析 ， 得出系统中采用氧量校正、动态富裕线路和空气－燃料交叉控制的结论。从而实现了对锅炉 燃烧时燃料－空气的最佳比例的调整，保证锅炉燃烧过程安全经济地进行。     

深圳妈湾电厂#1机组低NOx燃烧器改造及运行调整

为了降低NOx排放浓度,妈湾电厂对#1机组300MW锅炉的燃烧系统进行了改造,改造后,NOx排放浓度达250mg/Nm3,锅炉效率达93.47%,效果显著。     

生物质发电项目大气污染控制分析

分析了燃料的组成成分对电力生产的影响,通过比较生物质燃料与常规燃料的燃烧工况,提出气态污染物的控制技术,得到用生物质燃料来代替矿物燃料用于发电项目,既可以减少化石燃料的供应量,又可以减少温室气体二氧化碳、大气污染物二氧化硫、氮氧化物等的排放,从而改善环境质量的结论。     

生物质能空气动力场冷态模化实验系统

针对我国生物质燃料燃尽困难的特性,为研究不同一次风风速下炉内空气动力场的变化规律,运用相似理论进行了燃生物质锅炉空气动力场冷态模化试验系统的研究。以SZS4-1.25-D型燃酒糟锅炉为原型,构建模化试验系统进行冷态等温模化试验研究,主要侧重于测试生物质能能否与空气混合。试验台的风量测试采用球型五孔探针和DT4020C型电子微压计进行测试。     

试论生物质成型燃料热水锅炉的改进设计

针对生物质成型燃料热水锅炉存在的一些问题,进行可行性研究,并加以改进,经实验结果表明,改进后的锅炉散热损失有了明显降低,锅炉热效率有了一定程度的提高,散热损失有了明显降低,为今后的改进设计提供参考依据。     

浅析火电厂燃料量控制系统

本文在国内外锅炉控制现状的基础上,研究了燃煤锅炉燃烧控制系统中的燃料量控制系统.燃料控制的任务在于进入锅炉的燃料量随时与外界负荷要求相适应.燃料量控制系统中,采用暖油炉流量信号对来自协调控制系统的热量信号校正以调整燃料量.     

均质压燃式发动机系统的改造及燃烧分析

对实验室原有的依维柯索菲姆柴油发动机进行燃油喷射系统和进排气系统的改造,使其实现均质压燃燃烧方式(HCCI)燃烧方式。同时加装数据和信号采集装置,以基础燃料进行燃烧,利用缸压采集和燃烧分析模块进行数据采集和分析。实验证明,通过对发动机原有燃油喷射系统和进排气系统的改造,完全能够实现HCCI燃烧方式,在过量空气系数λ为2.85左右时,发动机NO_x和碳烟的排放能同时降低。可以考虑改进排气系统和燃油喷射系统,将λ控制在理想值附近。     

卡思卡特城堡

It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,     

不同的吃喝玩乐

一、吃和喝吃苹果 eat an apple, 吃药 take medicine,吃糖 have some sweets,吃饭 have one's meals,吃馆子 dine out,吃惊 be surprised/     

漏洞百出的教育

Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help?     

只要努力,不要后悔

There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love.     

浅谈移民问题

Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject.     

Sister Carrie, an Adherent of Desires

Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities.     

Improvement of one-cycle controller by use of proportional integral differential controller

1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec…     

库克斯顿城堡

城堡, 是欧洲典型的建筑之一, 每个城堡都有一个美丽的传说或是一段历史。从本期开始, 我们将推出“城堡之旅”, 带各位读者去浏览、观赏欧洲各地的城堡, 开始一段文化与历史的旅途!     

The Reader Response Approach to Teaching of English Literature

During interview with English majors, it was found that a majority of students expressed disappointment with their experience of English literature classes. Students' dislike of learning English literature appears to be the major problem of teaching English literature in China. Reader response approach is a good way to solve this problem. In this paper, I explain the rationale behind the reader response approach, such as its origin, definition, features, assumptions, and strategies. Then I illustrate how reader response approach works as a teaching strategy by presenting several teaching models. At last I evaluate its usefuiness for teachers and present the advantages of reader response approach in Chinese context.