摘要
以天津港干散货码头太阳能平板集热系统为主要研究对象,建立了当地气象和系统的数学模型,利用仿真软件进行模拟和求解。分析了系统各个参数对平板集热器有效集热量、效率的影响。研究结果表明:集热器集热量与积尘量成反比,天津港北疆港区积尘能导致集热量下降52%;不同类型积尘矿粉或煤粉对集热量基本无影响;集热量与集热工质流量成正比,当集热工质流量增大至一定时,集热量不再变化;集热器进口水温越小,集热器有效集热量和效率越大,但变化幅度也越大,不利于系统的稳定运行。要使集热器获得较高热性能,不仅要减小积尘,还要选取适当的集热器进口工质温度和流量。
The solar energy plate collector system of Tianjin dry bulk terminal was taken as the main research object,the mathematical model of the weather and system was established,and the simulation and solution were carried out by using simulation software.The influence of each parameter of the system on the effective heat collection and efficiency of the plate collector is analyzed.The results show that:the heat collection of collector was inversely proportional to the dust accumulation,the dust accumulation in Beijiang port area of Tianjin port is the most serious,which can reduce the heat collection by 52%;different types of dust accumulating ore powder or pulverized coal have no effect on heat collection;the heat collection is directly proportional to the mass flow of collector,when the mass flow of collector increases to a certain extent,the heat collection will not change;the collector inlet water temperature is smaller,the collector effective heat collection and efficiency is greater,but the change range is also greater,which is unbeneficial to the stable operation of system.In order to obtain higher collector thermal performance,the dust accumulation should be reduced,and the appropriate temperature and flow rate of collector working inlet medium should be also controlled.
作者
顾明
GU Ming(Tianjin Research Institute for Water Transport Engineering,Key Laboratory of Environmental Protection Technology on Water Transport,Ministry of Transport,Tianjin 300456,China)
出处
《水道港口》
2021年第3期370-375,共6页
Journal of Waterway and Harbor
基金
国家重点研发计划项目(2016YFE0204800)
天津市科技计划项目(19PTZWHZ00070)。
关键词
太阳能
平板集热器
积尘
集热量
流量
solar energy
flat plate collector
dust accumulation
heat collection
flow rate
