ABSTRACT

The present study deals with performance analysis of solar power tower powered combined pre-compression supercritical CO₂ cycle and organic Rankine cycle (ORC) for recovering waste heat. Results showed that net power output and thermal efficiency of pre-compression cycle was improved by 4.51 and 4.52%, respectively, using ORC. Highest thermal, exergy efficiency, and power output of the combined cycle increased with solar irradiation having highest values 51.83, 74.06%, and 278.5 kW at 1000 W/m² of solar irradiation using R227ea. Waste heat recovery ratio increased with heat exchanger effectiveness. Its highest value was found as 0.5673 at 0.95 of effectiveness based on R227ea.

摘要

本研究涉及利用太阳能塔驱动的联合预压缩超临界CO ₂循环和有机朗肯循环（ORC）来回收废热的性能分析。结果表明，使用ORC，预压缩循环的净功率输出和热效率分别提高了4.51％和4.52％。使用R227ea在1000 W / m ²的太阳辐照下，太阳辐照具有最高值51.83、74.06％和278.5 kW，联合循环的最高热效率，火用效率和功率输出增加。废热回收率随着热交换器的有效性而增加。基于R227ea，发现其最高值为0.5673，效率为0.95。