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构建了一套供热功率为310kW的太阳能中温集热利用制蒸汽系统,建立了系统主要模块——太阳能集热器与热変换器的热力学模型,研究了变工况下太阳辐射强度、凝水回收比、环境温度对系统效率和供热功率的影响,探讨了不同运行参数条件下集热温度与系统性能之间的关系。研究结果表明:增大辐射强度对系统性能提升显著;回收凝水对系统效率的影响不大,但对制热功率的提升较为明显;系统性能随环境温度升高呈先上升后下降的趋势;系统存在最佳集热温度,最佳集热温度随辐射强度和环境温度的增大而升高。
A set of steam-generating system using solar energy medium-temperature heat collecting system with a heating power of 310kW was constructed. The thermodynamic models of the main modules of the system, solar collectors and heat exchangers, were established. The effects of solar radiation intensity Water recovery ratio, ambient temperature on the system efficiency and heating power, the relationship between the collector temperature and system performance under different operating parameters was discussed. The results show that increasing the radiation intensity can improve the performance of the system significantly. Recycled condensate has little effect on the system efficiency, but increases the heating power more obviously. The system performance first increases and then decreases with the increase of ambient temperature. The best collector temperature, the optimal collector temperature with the radiation intensity and ambient temperature increases.