过剩空气系数 meaning in Chinese
air excess factor
airfuel ratio
excess air coefficient
excess air factor
excess air number
excess air ratio
Examples
- Under the condition of constant phosphorus mass flow rate , the smog exit temperature would increase slowly while other parameters would decrease with increasing excess air coefficient
在燃磷量不变情况下，最高燃烧温度、壁面最大热流和平均热流均随过剩空气系数的增大而减小，但烟气出口温度缓慢增加。 - The predicted results showed that maximum combustion temperature , smog exit temperature , maximum wall heat flux and averaged wall heat flux would increase with increasing phosphorus mass flow rate when excess - air coefficient or air flow rate was constant
模拟结果表明，无论过剩空气系数固定还是空气流量固定，随燃磷量的增大，最高燃烧温度、烟气出口温度、壁面平均热流和最大热流都呈上升趋势。 - The effects of parameters on maximum combustion temperature , smog exit temperature , maximum wall heat flux , averaged wall heat flux of a new phosphoric acid tower with circular water wall were discussed , including phosphorus consumption , excess - air coefficient , wall temperature and radiation absorption coefficient , with the mathematical model developed in part
摘要利用已建立的数学模型考察了燃磷量、过剩空气系数、壁面温度、辐射吸收系数对新型燃磷塔的最高燃烧温度、烟气排放温度、壁面最大热流和平均热流的影响。 - After thermodynamic calculation on several operation conditions of the furnace , cold - state flow and resistance mensuration , the combustion of the tubular - furnace hearth was changed into swirl and addition of radiate cylinder and oxygen content detection minish 1 . 25 surplus air to less than 1 . 15 , improving the combustion condition and convection and radiate heat transfer efficacy , resuling in reducing the waste - gas temperature 45 , decreasing exhaust gas loss , and saving fuel by 6 %
摘要通过对加热炉几种工况进行热力计算、冷态试验的流场分布及阻力测定和热态试验的炉膛温度场分布及管壁温度等参数的测定，确定将管式加热炉炉膛内直流燃烧改为旋流场燃烧和增加辐射筒，增设烟气含氧量分析，可以将燃烧的过剩空气系数从1 . 35减小到1 . 15以下，极好地改善炉膛内的燃烧状况和对流辐射传热效果，从而降低排烟温度45 ，减少加热炉排烟损失，节约了煤气量6 %以上。 - This article aims at the boiler ' s problems in operation : 1 ) under nominal load , the smoke temperature at the outlet of hearth reaches 1200 , far more exceeds 1050 the original designed temperature . this will always result in slag inside boiler and the temperature of overheater ' s pipe superheat , so that boiler cannot take nominal load and all these influence boiler ' s nomal operation heavily , 2 ) this article also studied the reason why the assistant oil becoming necessary when coal changes . during the nomal operation , many factors ( makeup of combustor and its disposal , smirch and encrust of water wall , excessive air coefficient , temperature of primary air , coal type and density of coal dust ) can deviate the designed working conditions , then affect the boiler ' s nomal operation
本文针对该锅炉在实际运行中存在的问题：在额定负荷下，炉膛出口超温、低温段过热器前烟温高达936 ，远远超过815的设计值；喷燃器四周水冷壁结焦严重，过热器管壁温度超标，无法带上额定负荷；甚至有时因燃煤质量的变化，必须投油助燃的严重情况进行了分析研究。在实际生产过程中，燃烧器的结构、布置，水冷壁的粘污、结垢，过剩空气系数、一次风温、煤种及其浓度变化等许多因素都会偏离锅炉的设计工况，从而影响炉内的传热和燃烧，造成炉膛出口超温、水冷壁结渣等问题。