太阳能平板集热器管内流动不均匀性的数值研究  

Numerical Investigation of Flow Distribution in Flat Plate Solar Collector

作　　者：张轩 王承君 李伟伟[3] 张立栋[4] ZHANG Xuan;WANG Cheng-jun;LI Wei-wei;ZHANG Li-dong(Shenmu Vocational&Technical College,Shenmu 719300,China;Sinohydro Xilingol Wind Power Development Co.,Ltd.,Xilinhaote 026000,China;Huaneng Chaohu Power Generation Co.,Ltd.,Chaohu 238015,China;Engineering Research Centre of Oil Shale Comprehensive Utilization(Ministry of Education),Northeast Electric Power University,Jilin 132012,China)

机构地区：[1]神木职业技术学院,陕西榆林719300 [2]中国水电建设集团锡林郭勒风电开发有限公司,内蒙古锡林浩特026000 [3]华能巢湖发电有限责任公司,安徽巢湖238015 [4]东北电力大学油页岩综合利用教育部工程研究中心,吉林吉林132012

出　　处：《节能技术》2021年第6期561-565,共5页Energy Conservation Technology

基　　金：教育部长江学者和创新团队发展计划(IRT17R19)。

摘　　要：以太阳能平板集热器为研究对象,为了减少管内工质流动的不均匀性,建立了平板集热器管道的物理模型并进行数值研究工作,定量分析了14个支管及2个联箱管道内工质流速的不均匀性。通过改变平板集热器管道的流程及流动方式对管道内工质流速不均匀性进行优化。研究表明:原型及改进后的两种进程方式都存在不均匀性,但改进后能显著降低管道内流速的不均匀性,不同入口流量情况下不均匀度从0.35降低至0.22左右,且C方案的流动不均匀性更稳定。In order to reduce the non-uniformity of working medium flow in the pipe,a geometric model of solar flat-plate collector is established,and the numerical simulations are performed.The unevenness of flow velocity in 14 branch pipes and 2 header pipes are analyzed quantitatively.The flow and flow mode of the plate collector pipe were changed,the unevenness of the flow velocity of working medium in the pipe was optimized.Results indicate that both the original and the improved modes have non-uniformity,however,the unevenness of flow velocity in the pipeline can be significantly reduced after the improvement.Under different inlet flow conditions,the unevenness decreased from 0.35 to about 0.22,the flow unevenness of scheme C is more stable.

关 键 词：太阳能平板集热器 流量分布 优化 计算流体力学 

分 类 号：TM615[电气工程—电力系统及自动化]