摘要
针对输油管道阻力大的问题,提出了一种利用太阳能聚光加热输油管道的新型减阻集热方式。采用Fluent软件,对物理模型、网格、湍流方程、初始条件及边界条件等进行了合理的设置,对输油管路进行了数值模拟;研究了管长与聚光比对输油管段出口温度的影响,并与理论计算结果进行了对比分析。结果表明:出口温度随着管长的增加而增加,同时也随着聚光比的增大而增加;该管路在聚光比为5,入口温度为20℃,流速为1 m/s的条件下,对管道前8 km铺设复合抛物面聚光器(CPC)进行聚光加热可使油品温度提高到60℃,使摩阻系数大幅度降低,从而达到了减阻的目的。在输油管道的末端利用换热器可将油品得到的热量进行回收,达到能源的高效利用。
Aiming at the problem of large resistance of oil transportation pipeline,a new type of drag reduction and heat collecting method using solar concentrating to heat oil transportation pipeline is proposed.Fluent software is used to conduct a reasonable set of physical model,mesh,turbulence equation,boundary conditions and initial conditions,and oil transportation pipelines are simulated numerically.The influence of pipe length and concentration ratio on the outlet temperature of oil transportation pipeline segment is studied and compared with the theoretical calculation results.The results show that the outlet temperature increases with the increase of pipe length,and it also increases with the increase of concentration ratio.With concentration ratio of 5,inlet temperature of 20℃ and flow rate of1 m/s,the first 8 km of the pipeline is equipped with a compound parabolic concentrator(CPC) for concentrated heating.By doing so,the temperature of oil increases to 60℃,the coefficient of friction resistance is greatly reduced,thus achieving the purpose of drag reduction.At the end of oil transportation pipeline,a heat exchanger can be used to recover the heat obtained by oil to achieve efficient use of energy.
作者
钟洋
陈海飞
蔡宝瑞
郭强
ZHONG Yang;CHEN Haifei;CAI Baorui;GUO Qiang(School of Petroleum Engineering,Changzhou University)
出处
《油气田地面工程》
2020年第2期54-59,共6页
Oil-Gas Field Surface Engineering
基金
国家自然科学基金青年基金(51906020)
江苏省高等学校自然科学研究面上项目(18KJD480001)
关键词
输油管道
数值模拟
减阻
摩阻系数
太阳能
聚光加热
oil transportation pipeline
numerical simulation
drag reduction
coefficient of friction resistance
solar energy
concentrated heating
