平板太阳能集热器数学建模及仿真

Mathematical modeling and simulation of flat-plate solar collector

太阳能的开发与应用已经成为国内外的研究热点,我国作为太阳能集热器的生产和保有量大国,有必要对太阳能集热器的数学模型、集热过程和效率进行研究。针对平板太阳能集热器易于与建筑相结合的特点,通过系统热平衡过程分析,瞬时效率方程推导,动态分析水温和水流质量流量的改变对集热器瞬时效率的影响,利用Matlab/Simulink构建出了平板太阳能集热器动态仿真平台,在稳态或准稳态的工况下实现了对系统瞬时效率的仿真,并验证了仿真数据的有效性。

The development and application of solar energy was a hot research topic at home and abroad, as the production of solar collector and the ownership power in our country, it was necessary to study the mathematical modeling of solar collector, efficiency and heating process. Aiming at the characteristics of the flat-plate solar collector integrating with the building easily, through the analysis of system heat balance process, the derivation of instantaneous efficiency equation, and the dynamic analysis of the effect of the change of water temperature and water flow mass flow rate on the instantaneous efficiency of the collector, the dynamic simulation platform of the plate-solar collector was built using Matlab/Simulink. The system simulation of the instantaneous efficiency under steady state or quasi steady state conditions was realized. The effectiveness of the simulation data was verified.