文档介绍：哈尔滨工程大学硕士学位论文
摘 要
随着科学技术的发展,天然气这种清洁能源。将越来越广泛的使用。根据我国的能源政策,结合中国经济发展运状况,21世纪中国的燃气锅炉将会有很大的发展。
在我国东北农村的中小学校、理发店、小商店等场所,晚上下班后一般不继续供暖。为此我们特别研制了能够间歇供暖的燃气供暖系统。
系统是以防冻液为循环介质,能够在O'C以下的情况下使锅炉仍能正常工作。供暖系统的燃气锅炉是我们为满足农村中小学校、理发店、小商店的供暖需求专门设计的,包括燃烧器、换热器、循环水泵等,其燃烧为负压燃烧,所需空气取自室外,燃烧后的烟气直接强制对室外排放,对室内空气不会造成任何影响。为使系统能够正常的工作,我们特别制作了膨胀水箱,膨胀水箱能保证系统的正常工作和安全可靠。
为了验证系统安全性、可靠性、系统的工作效率、各项指标是否能满足设计条件,我们进行了采暖的试验,实验证明在ox2以下的情况下,系统能够安全稳定的运行。通过实验,得出温度与时间的关系,燃气消耗量与温度关系,并拟合了它们关系的曲线。
最后用FLUENT软件计算了停机14小时内,室内的平均温度。
关键词:燃气间歇式供暖系统:燃气锅炉;循环介质:膨胀水箱;防冻液
哈尔滨二I=程大学硕士学位论文
ABSTRACT
With the development of science and technology,natural gas,as a kind of clean energy source,will be utilized more to the energy policy of our country in bined with the economic situation of China,we can anticipate that the burning gas boiler will have a great future in china in the 21st
century.
In elementary school,middle school,barbershop,school store,
providing is not continuous after work in the northeast of we designed this system in order to meet the demand.
In this system,antifreeze is used as cycling medium,which Call guarantee the system Io work well even under 0"C.
This heating system is designed specially to meet the thermal demand in
places mentioned specially design gas boiler burner,heat extractor and for this heating is under negative pressure·The air needed is from the flue·gas is expelled to outside,it has no
influence on the air inside loom。
In order to guarantee system to operate securely and stably,we specially designed expand water tank,which can guarantee system to operate securely and relationships between the temperature and time,the gas consumption and the temperature ale given after experiment,then curve fitting.
To test whether the security,the reliability as well as the efficiency of this system can satisfy the designing expection or not,with this system a heating test
哈尔滨工程大学硕士学位论文
was proformed,It show