CAJ | 학술논문

详述了适用于槽式太阳能中低温有机朗肯循环热发电系统的腔体式吸热器的结构形式和聚光原理；并应用TRACEPRO 软件对该吸热器的光学特性进行了分析，证实了该吸热器能够可靠地接收太阳辐射；建立了该吸热器的二维稳态传热计算模型；选用R123作为工质，系统地分析了其在超临界工况下的辐照强度、工作压力、工质流量、环境风速以及保温层厚度等参数对热吸热器热力性能的影响规律。结果表明：吸热器在超临界工况下工作时，适当增加工质流量可以增大其吸热量并保证其安全稳定运行；增加入口压力会增加设备成本，并且不能提高吸热器的性能；合理的保温层厚度可以有效减少热损，使吸热器性能得到改善。研究结果可为设计和搭建腔体式吸热器实验台提供理论参考。
상술료괄용우조식태양능중저온유궤랑긍순배열발전계통적강체식흡열기적결구형식화취광원리；병응용TRACEPRO 연건대해흡열기적광학특성진행료분석，증실료해흡열기능구가고지접수태양복사；건립료해흡열기적이유은태전열계산모형；선용R123작위공질，계통지분석료기재초림계공황하적복조강도、공작압력、공질류량、배경풍속이급보온층후도등삼수대열흡열기열력성능적영향규률。결과표명：흡열기재초림계공황하공작시，괄당증가공질류량가이증대기흡열량병보증기안전은정운행；증가입구압력회증가설비성본，병차불능제고흡열기적성능；합리적보온층후도가이유효감소열손，사흡열기성능득도개선。연구결과가위설계화탑건강체식흡열기실험태제공이론삼고。
The paper presented the structure and focusing principle of cavity absorber in the parabolic trough solar concentrator that was suitable for low and medium temperature solar thermal electric generation with organic Rankine cycle(ORC). The optical characteristics were studied by TRACEPRO software,and it was approved that the absorber reliably accepted solar radiation. This paper first established a two-dimensional steady-state heat transfer model, and selected R123 as working fluid, then systematically analyzed the major influence factors, including the solar irradiation, working pressure, flow rate, wind speed, and thickness of insulating layer, on the supercritical heat transfer processes. The results show that increasing mass flow rate should be carried out to enhance the heat absorption and keep the absorber tube in the safe state under supercritical condition. Equipment cost rises with increasing the inlet pressure, and can't improve the performance. The suitable insulation thickness can effectively reduce heat loss and improve performance of the absorber. The research results offer a reference for designing and building cavity absorber experimental system.