通风空调管道系统新型低阻力三通
摘要：讨论了通风空调管道中局部构件阻力的形成和减阻机理。介绍了通过优化弧面结构或添加导流片降低阻力的新型三通。采用数值模拟与全尺寸实验结合的方法，分析了不同流量比和管道面积比下新型三通的阻力特性。
关键词：通风空调管道三通局部阻力减阻弧线导流片流量比面积比
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[2] 江亿.我国建筑能耗趋势与节能重点[J].建设科技，2006(7):10- 13.
[3] STEPHENS B.The impacts of duct design on life cycle costs of central residential heating and air-conditioning systems[J].Energy and buildings,2014,82:563- 579.
[4] CIPRIAN F.Attractors representing turbulent flows[M].[S.l.]:American Mathematical Society,1985:8- 21.
[5] GAO R,LI H M,LI A G,et al.Applicability study of a deflector in ventilation and air conditioning duct tees based on an analysis of energy dissipation[J].Journal of wind engineering and industrial aerodynamics,2019,184:256- 264.
[6] 惠荣娜.通风管道局部构件阻力系数及减阻方法研究[D].西安：西安建筑科技大学，2007:49- 51.
[7] 朱正林，徐治皋，辛洪祥.T型三通性能优化[J].南京工程学院学报(自然科学版),2007,5(2):60- 63.
[8] 陈磊.弯头耦合三通降阻PIV实验及CFD研究[D].西安：西安建筑科技大学，2009:103- 107.
[9] 孟康，程永，肖玲，等.不同夹角T型三通流动特性的数值研究[J].黑龙江科技信息，2010(1):30- 31.
[10] LI X,WANG S.Flow field and pressure loss analysis of junction and its structure optimization of aircraft hydraulic pipe system[J].Chinese journal of aeronautics,2013,26(4):1080- 1092.
[11] KOKA F,MYOSEB R,HOFFMANN K A.Numerical assessment of pulsatile flow through diverging tees with a sharp and round-edge junction[J].International journal of heat and fluid flow,2019,76:1- 13.
[12] ITO H,IMAI K.Pressure losses in vaned elbows of a circular cross section[J].Journal of fluids engineering,1966,88:684- 685.
[13] ROY S,CHATTERJI A K,DOYLE J M.Design verification of HVAC duct turning vanes in nuclear power plants[C]//Structural Engineering in Nuclear Facilities,1984:55- 58.
[14] HASKEW J T,SHARIF M A R.Performance evaluation of vaned pipe bends in turbulent flow of liquid propellants[J].Applied mathematical modelling,1997,21:48- 62.
[15] LI A G,ZHANG W Q,GAO M X.Field test and CFD modelling for flow characteristics in central cooking exhaust shaft of a high-rise residential building[J].Energy and buildings,2017,147:210- 223.
[16] GAO R,LIU K K,LI A G,et al.Biomimetic duct tee for reducing the local resistance of a ventilation and air-conditioning system[J].Building and environment,2018,129:130- 141.
[17] GAO R,FANG Z Y,LI A G,et al.A novel low-resistance tee of ventilation and air conditioning duct based on energy dissipation control[J].Applied thermal engineering,2018,132:790- 800.
[18] LIU Z,LI A G,HU Z,et al.Study on the potential relationships between indoor cultural fungi,particle load and children respiratory health in Xi'an,China[J].Building and environment,2014,80:105- 114.
[19] ZHANG W Q,LI A G,GAO R,et al.Effects of geometric structures on flow uniformity and pressure drop in dividing manifold systems with parallel pipe arrays[J].International journal of heat and mass transfer,2018,127:870- 881.
[20] 李涛，李安桂.通风管道90°弯管Z型组合局部阻力相邻影响系数的实验与数值模拟[J].流体机械，2006,34(8):6- 14.
[21] MILLER D S.Internal flow[M].[S.l.]:British Hydromechanics Research Association,1971:36- 39.
[22] ИДЕЛЬЧИК И Е.Аэродинамика потока и потери напора в диффузорах[J].Пром.аэродинамика,1947 (3):49- 55.
[23] JIN Y,DING B J,LI Z,et al.Hydraulic friction manual[M].[S.l.]:Ministry of Energy,Ministry of Water Resources and Hydropower Planning and Design Institute,1989:15- 19.
[24] SCHOBEIRI M T.Fluid mechanics for engineers[M].Berlin:Springer Berlin Heidelberg,2010:41- 43.
[25] 刘凯凯.基于“仿生”的通风空调管道三通减阻方法研究[D].西安：西安建筑科技大学，2018:33- 36.
[26] GAO R,WEN S H,LI A G,et al.A novel low-resistance damper for use within a ventilation and air conditioning system based on the control of energy dissipation[J].Building and environment,2019,157:205- 214.
[27] LI A G,CHEN S K,GAO R,et al.Study on local drag reduction effects of wedge-shaped components in elbow and T-junction close-coupled pipes[J].Building simulation,2017,7 (2):175- 184.
[28] LAWS E M,OUAZZANE A K.A further investigation into flow conditioner design yielding compact installations for orifice plate flow metering[J].Flow measurement and instrumentation,1995,6(3):187- 199.
[29] 陈仕扩，郑家芬，高然，等.通风空调管道分流T形三通减阻研究[J].暖通空调，2018,48(11):109- 113.
[30] KIM K C,KIM S K,YOON S.PIV measurements of the flow and turbulent characteristics of a round jet in crossflow[J].Journal of visualization,2000,3:157- 164
[31] GAO R,LIU K K,LI A G,et al.Study of the shape optimization of a tee guide vane in a ventilation and air-conditioning duct[J].Building and environment,2018,132:345- 356.
[32] 秦慧敏.关于通风管三通的局部阻力系数问题[J].暖通空调，1980,10(3):12- 15.
[33] AUNG H H,TUN H M.Design and implementation of air conditioning system in operating room[J].International journal of electronics and computer science engineering,2014,3(3):244- 253.
[34] 方智宇.基于湍流耗散率控制的三通变弧线减阻方法研究[D].西安：西安建筑科技大学，2018:79- 84.
[35] GAO R,ZHANG H C,LI A G,et al.A novel low-resistance duct tee emulating a river course[J].Building and environment,2018,144:295- 304.
[36] 陈仕扩.通风空调管道分流T形三通变径消涡降阻方法[D].西安：西安建筑科技大学，2017:24- 26.
[37] GAO R,FANG Z Y,LI A G,et al.Numerical simulation and experimental study on resistance reduction optimization of the cambered surface of elbows under adjacent influence[J].Procedia engineering,2017,205:3985- 3992.
[38] GAO R,FANG Z Y,LI A G,et al.Numerical simulation and experimental study of the drag reduction of 90° elbows for ventilation and air conditioning tubes in an arc form[J].Procedia engineering,2017,205:3978- 3984.
[39] GAO R,LI A G.Dust deposition in ventilation and air-conditioning duct bend flows[J].Energy conversion and management,2012,55:49- 59.
Novel low resistance tees for ventilation and air conditioning duct systems
Abstract: This paper discusses the resistance formation and reduction mechanisms of local components in ventilation and air conditioning ducts, and presents the novel tees with low resistance by optimizing arc surface structure or adding a guide vane. The resistance characteristics of the novel tees under different flow ratios and pipeline area ratios are analysed by means of numerical simulation and full-scale experiment.
Keywords: ventilation and air conditioning duct; tee; local resistance; resistance reduction; arc; guide vane; flow ratio; area ratio;
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