太阳能槽式直接蒸汽发电系统在南京地区运行的模拟

Operation Simulation of Solar Parabolic Trough Direct Steam Generation System in Nanjing Area

以无储热的5MW太阳能槽式直接蒸汽发电系统为研究对象,基于南京全年辐射强度统计数据及其变化规律,进行了全年稳态运行模拟。模拟结果表明:在低辐射强度下系统的主汽温度较低;在高辐射强度下主汽压力下降明显。因此当辐射强度较低时,前移汽水分离器位置可以提高过热汽温和发电量;当辐射强度较高时,降低给水流量可以稳定主汽压力。

With no heat accumulation of 5MW solar groove direct steam generating system as the research object,we have done the simulation based on the radiation intensity of Nanjing statistical data and the change rules of the steady state operation.The simulation results show that the main steam temperature of the system in low radiation intensity is low;the main steam pressure drop significantly in high radiation intensity.So when the radiation intensity is low,antedisplace steam trap can improve the temperature of the superheated steam and generated energy,When the radiation intensity is higher,lower feed water flow can be stable main steam pressure.