On-sun testing of a 1 MWt particle receiver with automated particle mass-flow and temperature control

C. Ho, Gregory Peacock, J. Christian, Kevin Albrecht, J. Yellowhair, D. Ray
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引用次数: 9

Abstract

This paper describes on-sun testing of an automated system that controls the particle mass flow and outlet temperature in a high-temperature falling particle receiver. A slide gate with a linear actuator was designed and implemented in a closed-loop feedback system that varied the particle mass flow rate to maintain a desired bulk particle outlet temperature. The system was designed to operate at high temperatures (>700 °C) and relatively large mass flow rates (∼1 - 10 kg/s and higher). On-sun tests were performed at different irradiances, particle inlet temperatures, and particle mass flow rates. Results showed that the automated system could maintain desired particle outlet temperatures from ∼300 – 650 °C for most test conditions. During significant flux perturbations, oscillations (or ringing) about the desired setpoint temperature was observed, which is common for simple proportional control systems. Future studies will investigate more advanced proportional integral derivative methods to dampen the oscillations and provide tighter controls. Particle temperature rise and thermal efficiency were also measured during the on-sun tests and are reported. Finally, the particle mass flow rate as a function of slide-gate aperture and particle temperature was measured, and a new correlation was derived.
1 MWt颗粒接收器的日光测试,具有自动颗粒质量流和温度控制
本文介绍了一种在高温落粒接收器中控制颗粒质量流量和出口温度的自动化系统的日光测试。设计了一种带线性驱动器的滑动闸门,并在闭环反馈系统中实现,该系统可以改变颗粒质量流量以保持所需的散装颗粒出口温度。该系统设计用于高温(约700°C)和相对较大的质量流量(约1 - 10 kg/s或更高)。在不同的辐照度、颗粒入口温度和颗粒质量流量下进行太阳下测试。结果表明,在大多数测试条件下,自动化系统可以保持所需的颗粒出口温度为~ 300 - 650°C。在显著的磁通扰动期间,观察到关于期望的设定值温度的振荡(或振铃),这对于简单的比例控制系统是常见的。未来的研究将研究更先进的比例积分导数方法来抑制振荡并提供更严格的控制。在日光下测试中还测量了颗粒的温升和热效率,并进行了报道。最后,测量了颗粒质量流率与滑动门孔径和颗粒温度的关系,并推导出新的相关关系。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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