涡旋式太阳能生物质焦颗粒吸热器设计及传热性能分析  

Design and Thermal Performance Analysis of Vortex Solar Biochar Particle Receiver

作　　者：余上元 王鼎 胡松 张燕平[1] YU Shangyuan;WANG Ding;HU Song;ZHANG Yanping(School of Energy and Power Engineering,Huazhong University of Science and Technology,Wuhan 430074,Hubei Province,China)

机构地区：[1]华中科技大学能源与动力工程学院,湖北省武汉市430074

出　　处：《中国电机工程学报》2023年第14期5502-5511,共10页Proceedings of the CSEE

基　　金：国家重点研发计划项目(2018YFE0127500)。

摘　　要：为实现生物质能与太阳能的耦合利用,该文设计涡旋式太阳能颗粒吸热器的光热增效热解反应系统方案,并针对涡旋式生物质焦颗粒太阳能吸热器建立模型。采用区域法对涡旋式太阳能吸热器建立机理模型,通过数值模拟分析探究颗粒流量、太阳辐射强度及生物质种类对吸热器传热性能的影响规律。结果表明:增大颗粒流量有利于提高吸热器效率,并使颗粒出口温度降低,颗粒吸热占比升高;太阳辐射强度从200W/m2增加到800W/m2,会使颗粒出口温度升高,吸热器效率从27.7%增大到67.2%,且辐射强度低时,吸热器效率提升更为明显;使用较大比热的生物质焦颗粒可以小幅度提高吸热器效率。结果可以为涡旋式太阳能颗粒吸热器的设计与运行提供参考。In order to realize the coupling utilization of biomass energy and solar energy,this paper designs a solar-thermal synergistic pyrolysis reaction system using pyrolysis coke recycling,and analyzes the heat transfer characteristics of its core component vortex biochar particle receiver.The mechanism model of vortex solar receiver is established with the region method,and the effects of particle flow,solar radiation intensity and biomass species on the heat transfer performance of the receiver are studied.The results show that increasing the particle flow rate can improve the efficiency of the receiver,and it will reduce the particle outlet temperature.With the increase of solar radiation intensity,the efficiency of receiver is obviously improved when the radiation intensity is low.Different biochar particles have a certain impact on the efficiency of the receiver,and using particles with larger specific heat is conducive to improving the efficiency of the receiver.

关 键 词：生物质焦 太阳能 颗粒 吸热器 涡旋式 

分 类 号：TK519[动力工程及工程热物理—热能工程]