新型相变蓄热式电加热装置蓄热性能优化研究  

Optimization of heat storage performance of a new phase change regenerative electric heating device

作　　者：郑炜博[1] 孙东[1] 李云飞 李炜[1] 王晓东[1] 马立辉 董伟佳 王新伟[2] ZHENG Weibo;SUN Dong;LI Yunfei;LI Wei;WANG Xiaodong;MA Lihui;DONG Weijia;WANG Xinwei(Shengli Oilfield Technical Testing Center,Dongying 25700,China;College of New Energy,China University of Petroleum(East China),Qingdao 266580,China)

机构地区：[1]胜利油田技术检测中心,山东东营257000 [2]中国石油大学(华东)新能源学院,山东青岛266580

出　　处：《重庆理工大学学报（自然科学）》2023年第9期356-364,共9页Journal of Chongqing University of Technology：Natural Science

基　　金：国家自然科学基金面上项目(51874333)。

摘　　要：目前降低原油黏度的加热方法主要是电加热,而全天电加热的方式存在高能耗和高成本的问题。为满足环保和工业生产的需要,将原油降黏加热法与谷电、相变材料相结合,设计了一种新型的相变蓄热电加热装置,并对装置的相变蓄热放热性能进行数值模拟研究,分析不同进口流量和泡沫金属孔隙率对放热过程的影响。结果表明:随着工质进口流量的增加,出口温度不断降低。并且,当出口温升为10℃时,装置进口流量可满足1.413~2.120 m 3/h的流量范围。同时,泡沫镍的加入使相变材料内部温度更加均匀,而且相变材料内部温度随泡沫金属的孔隙率的降低而降低。采用增加电加热棒的数量和降低单个电加热棒的功率的方法,对装置进行结构优化,使得局部高温现象明显改善。利用该装置既能保持较高的换热效率,又能降低生产成本。The heating method for reducing the viscosity of crude oil is mainly electric heating currently.However,all-day electric heating has the problem of high energy consumption and high cost.To meet the needs of environmental protection and industrial production,a new type of phase change storage thermoelectric heating device is designed by combining the crude oil viscosity reduction heating method with grain electricity and phase change materials.Then,the performance of phase change storage heat release of the device is studied by numerical simulation,and the influence of different inlet flow rate and the porosity of metal foam on the heat release process is analyzed.The results show that the outlet temperature decreases with the increase of inlet flow.At the same time,the addition of nickel foam makes the internal temperature of phase change materials more uniform,and the internal temperature of phase change materials decreases with the decrease of the porosity of metal foam.This paper adopts the method of increasing the number of electric heating rods and reducing the power of a single electric heating rod to optimize the structure of the device,and the local high temperature phenomenon is obviously improved after optimization.This device can not only maintain high heat transfer efficiency,but also reduce the production cost.

关 键 词：原油降黏 相变蓄热 电加热 谷电 结构优化 

分 类 号：TK172[动力工程及工程热物理—热能工程]