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针对槽式太阳能集热系统,建立了集热场得热及热损失等数学模型,并以典型槽式集热器EUROTROUGH-150(ET-150)组成的集热系统为例,进行了以集热场热效率最优为目标的优化;在此基础上以槽式太阳能辅助燃煤发电系统(即互补发电系统)为研究对象,采用一定的评价准则和集成方式,对直射辐射强度(DNI)设计值的选取进行分析研究.结果表明:不同回路数、不同纬度分布的集热场存在不同的最优列间距,且存在最佳取值范围的直射辐射强度设计值,使系统年性能最优.
Aiming at the trough solar collector system, the mathematical models of heat gain and heat loss of the collector field are established. Taking the collector system of a typical trough heat collector EUROTROUGH-150 (ET-150) as an example, Based on this, taking trough solar assisted coal-fired power generation system (ie, complementary power generation system) as the research object, using certain evaluation criteria and integration methods, the direct radiation intensity (DNI) design The results show that there are different optimal column spacings for the heat transfer field with different numbers of loops and different latitudes, and the design values of the direct radiation intensity with the best range of values exist, which makes the annual performance of the system optimal.