·1628· 工程科学学报，第38卷，第11期 一箭头为设置路径方向 1320 1310 兰 1300 1290 1280 1270 -50005001000150020002500300035004000 轴向位置/mm 图14分区分级燃气辐射管壁面设定路径()及沿路径温度分布曲线(b) Fig.14 Wall setting path (a)and wall temperature distribution curve along the setting path (b)of the zoned and staged gas fired radiant tube 再次燃烧，支管及回流管处的气体温度先升高后降低， Energy Conrers Manage,2013,74:454 但是降低趋势相对平缓.沿着气体流动方向，支管截 Saleh H E.Effect of exhaust gas reeirculation on diesel engine ni- 面上气体温度分布趋于均匀，外侧气体温度高于内侧 trogen oxide reduction operating with jojoba methyl ester.Renec Energy,2009,34(10):2178 气体温度 8]Feng J X,Wang H Y,Wu Q M,et al.Structural optimization (3)在壁面传热方面，分区分级燃气辐射管和双 and numerical simulation of gas-fired radiant tube heat exchang- P型辐射管的热效率分别为65.9%和64.2%，分区分 ers.J Unie Sci Technol Beijing,2013,35(7):935 级燃气辐射管的三通管、支管和回流管传递热量的比 (冯俊小，王宏宇，吴启明，等.燃气辐射管换热器的结构优 例相对双P型辐射管有了增加，各个壁面的热流密度 化与数值模拟.北京科技大学学报，2013,35(7)：935) 趋于均衡.分区分级燃气辐射管壁面最高温度为1047 9] Cheng S M,Yong H Q,Wu C B.Decreasing of NO,emission in ℃，壁面最大温差为73℃，比双P型辐射管降低15 fired-natural gas radiant-tube with regenerative combustor. Chongqing Univ Nat Sci Ed,2008,31(3):271 ℃.分区分级燃气辐射管热效率和温度均匀性均有增 (程淑明，雍海泉，伍成波.降低天然气蓄热式辐射管烟气中 加，可提高被加热工件的加热质量，而且可以延长辐射 N0,的实验.重庆大学学报（自然科学版），2008,31(3)： 管的使用寿命 271) [10]Saravanan P,Sahoo G,Srikanth S,et al.Failure analysis of ra- 参考文献 diant tube bumers in continuous annealing line (CAL)of an in- tegrated steel plant.J Failure Anal Prer,2011,11(3):286 1]Ahanj M D,Rahimi M.Alsairafi A A.CFD modeling of a radiant [11]Irfan M,Chapman W.Thermal stress in radiant tubes:a com- tube heater.Int Commun Heat Mass Transfer,2012,39(3):432 parison between recuperative and regenerative systems.Appl 2]Tsioumanis N.Brammer JG,Hubert J.Flow processes in a ra- Therm Eng,2010,30(2):196 diant tube burner:isothermal flow.Fuel,2008,87(1):103 [12]Irfan M A,Chapman W.Thermal stresses in radiant tubes due to 3]Tsioumanis N,Brammer JG.Hubert J.Flow processes in a ra- axial,circumferential and radiant temperature distributions.Appl diant tube burner:combusting flow.Energy Conrers Manage, Therm Eng,2009,29(10):1913 2011,52(7):2667 [13]Chae Y T,Strand R K.Thermal performance evaluation of hy- 4]Feng JX,Jiang M,Zhou W H.Flow heat transfer and NO,emis- brid heat source radiant system using a concentrate tube heat ex- sion characteristic of W-shaped radiant tubes with flue gas circula- changer.Energy Build,2014.70(1):246 tion.J Univ Sci Technol Beijing,2014,36(11)1552 [14]Normann F,Andersson K,Leckner B,et al.High-temperature (冯俊小，姜敏，周闻华，等.带烟气循环的W型辐射管流动 reduction of nitrogen oxides in oxy-fuel combustion.Fuel,2008, 传热及N0,排放特性。北京科技大学学报，2014,36(11)： 87(17):3579 1552) [15]Ghosh D,Ray S,Mandal A,et al.Failure investigation of ra- 5]Feng J X,Jiang M,Cao Y P,et al.Numerical investigation on diant platen superheater tube of thermal power plant boiler.High the low NO,emission of W-shaped radiant tubes.J Unir Sci Temp Mater Processes,2014.34(2):171 Technol Beijing,2014,36(8):1094 [16]Mikeska T,Svendsen S.Dynamic behavior of radiant cooling (冯俊小，姜敏，曹亚平，等.W型辐射管低NO,排放的数值 system based on capillary tubes in walls made of high perform- 研究.北京科技大学学报，2014,36(8)：1094) ance concrete.Energy Build,2015,108:92 6]Shen J,Liu JX,Zhang H,et al.NO,emission characteristics of [17]Quinn D E.Radiant Tube with Recirculation:USA Patent superfine pulverized anthracite coal in air-staged combustion US7959431B2.201106-14工程科学学报，第 38 卷，第 11 期 图 14 分区分级燃气辐射管壁面设定路径( a) 及沿路径温度分布曲线( b) Fig． 14 Wall setting path ( a) and wall temperature distribution curve along the setting path ( b) of the zoned and staged gas fired radiant tube 再次燃烧，支管及回流管处的气体温度先升高后降低， 但是降低趋势相对平缓． 沿着气体流动方向，支管截 面上气体温度分布趋于均匀，外侧气体温度高于内侧 气体温度． ( 3) 在壁面传热方面，分区分级燃气辐射管和双 P 型辐射管的热效率分别为 65. 9% 和 64. 2% ，分区分 级燃气辐射管的三通管、支管和回流管传递热量的比 例相对双 P 型辐射管有了增加，各个壁面的热流密度 趋于均衡． 分区分级燃气辐射管壁面最高温度为 1047 ℃，壁面最大温差为 73 ℃，比双 P 型辐射管降低 15 ℃ ． 分区分级燃气辐射管热效率和温度均匀性均有增 加，可提高被加热工件的加热质量，而且可以延长辐射 管的使用寿命． 参 考 文 献 ［1］ Ahanj M D，Ｒahimi M，Alsairafi A A． CFD modeling of a radiant tube heater． Int Commun Heat Mass Transfer，2012，39( 3) : 432 ［2］ Tsioumanis N，Brammer J G，Hubert J． Flow processes in a ra￾diant tube burner: isothermal flow． Fuel，2008，87( 1) : 103 ［3］ Tsioumanis N，Brammer J G，Hubert J． Flow processes in a ra￾diant tube burner: combusting flow． Energy Convers Manage， 2011，52( 7) : 2667 ［4］ Feng J X，Jiang M，Zhou W H． Flow heat transfer and NOx emis￾sion characteristic of W-shaped radiant tubes with flue gas circula￾tion． J Univ Sci Technol Beijing，2014，36( 11) : 1552 ( 冯俊小，姜敏，周闻华，等． 带烟气循环的 W 型辐射管流动 传热及 NOx 排放特性． 北京科技大学学报，2014，36 ( 11) : 1552) ［5］ Feng J X，Jiang M，Cao Y P，et al． Numerical investigation on the low NOx emission of W-shaped radiant tubes． J Univ Sci Technol Beijing，2014，36( 8) : 1094 ( 冯俊小，姜敏，曹亚平，等． W 型辐射管低 NOx 排放的数值 研究． 北京科技大学学报，2014，36( 8) : 1094) ［6］ Shen J，Liu J X，Zhang H，et al． NOx emission characteristics of superfine pulverized anthracite coal in air-staged combustion． Energy Convers Manage，2013，74: 454 ［7］ Saleh H E． Effect of exhaust gas recirculation on diesel engine ni￾trogen oxide reduction operating with jojoba methyl ester． Ｒenew Energy，2009，34( 10) : 2178 ［8］ Feng J X，Wang H Y ，Wu Q M ，et al． Structural optimization and numerical simulation of gas-fired radiant tube heat exchang￾ers． J Univ Sci Technol Beijing，2013，35( 7) : 935 ( 冯俊小，王宏宇，吴启明，等． 燃气辐射管换热器的结构优 化与数值模拟． 北京科技大学学报，2013，35( 7) : 935) ［9］ Cheng S M，Yong H Q，Wu C B． Decreasing of NOx emission in fired-natural gas radiant-tube with regenerative combustor． J Chongqing Univ Nat Sci Ed，2008，31( 3) : 271 ( 程淑明，雍海泉，伍成波． 降低天然气蓄热式辐射管烟气中 NOx 的实验． 重庆大学学报( 自然科学版) ，2008，31 ( 3) : 271) ［10］ Saravanan P，Sahoo G，Srikanth S，et al． Failure analysis of ra￾diant tube burners in continuous annealing line ( CAL) of an in￾tegrated steel plant． J Failure Anal Prev，2011，11( 3) : 286 ［11］ Irfan M，Chapman W． Thermal stress in radiant tubes: a com￾parison between recuperative and regenerative systems． Appl Therm Eng，2010，30( 2) : 196 ［12］ Irfan M A，Chapman W． Thermal stresses in radiant tubes due to axial，circumferential and radiant temperature distributions． Appl Therm Eng，2009，29( 10) : 1913 ［13］ Chae Y T，Strand Ｒ K． Thermal performance evaluation of hy￾brid heat source radiant system using a concentrate tube heat ex￾changer． Energy Build，2014，70( 1) : 246 ［14］ Normann F，Andersson K，Leckner B，et al． High-temperature reduction of nitrogen oxides in oxy-fuel combustion． Fuel，2008， 87( 17) : 3579 ［15］ Ghosh D，Ｒay S，Mandal A，et al． Failure investigation of ra￾diant platen superheater tube of thermal power plant boiler． High Temp Mater Processes，2014，34( 2) : 171 ［16］ Mikeska T，Svendsen S． Dynamic behavior of radiant cooling system based on capillary tubes in walls made of high perform￾ance concrete． Energy Build，2015，108: 92 ［17］ Quinn D E． Ｒadiant Tube with Ｒecirculation: USA Patent， US7959431B2． 2011--06--14 ·1628·