STEAM RECEIVER MODELS FOR SOLAR DISH CONCENTRATORS: TWO MODELS COMPARED
STEAM RECEIVER MODELS FOR SOLAR DISH CONCENTRATORS: TWO MODELS COMPARED
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发表时间：
2009
影响因子：
2
通讯作者：
José Zapata;K. Lovegrove;John Pye
中科院分区：
文献类型：
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作者：
José Zapata;K. Lovegrove;John Pye
1.摘要本文介绍了澳大利亚国立大学开发的两种方法，用于模拟抛物面碟形蒸汽腔接收器的瞬态响应。这两种方法都是基于一个圆柱形管道的热传递模型，使用移动边界的制定，并具有多相流的动态变化建模的能力。在TRNN16中进行了模型仿真，并与ANU 500 m ²“SG4”系统的实验运行进行了比较。虽然国际上关于碟式浓缩器系统的许多工作都着眼于它们与斯特林发动机的应用，但它们也非常适合于直接蒸汽发生接收器的操作，该接收器可以产生商业蒸汽涡轮机操作时的最高温度和压力。可以设想，基于大阵列盘的工厂将通过收集来自所有盘的蒸汽并经由蒸汽管线网络将其输送到中央动力块来操作。太阳能热发电厂的瞬态建模是准确估计其性能的关键。此外，精确的模型可以提供对工厂设计和优化可能性的见解。瞬态模型的另一个特点是它在开发自动控制系统中的有用性。本文回顾了由Siangsukone [1]开发的碟形蒸汽腔接收器的瞬态模型，并将其与ANU太阳能热集团目前正在开发的新模型进行了比较。这两种模式进行了描述和比较。定性分析也包括讨论每种方法的相对优点。新的菜的实验结果进行了比较与模拟，这是作者正在进行的工作的一部分。3. ANU的Dish系统
1. Abstract This paper presents two approaches developed at the Australian National University for modelling the transient response of a parabolic dish steam cavity receiver. Both approaches are based on a heat transfer model for a cylindrical pipe using a moving-boundary formulation, and feature the ability to model multiple phase flow that changes dynamically. A model simulation is implemented in TRNSYS 16 and compared against an experimental run for the ANU 500m² “SG4” system. Whilst much work internationally on dish concentrator systems has looked at their application with Stirling engines, they are also well suited to the operation of direct steam generating receivers that can produce the highest temperatures and pressures that commercial steam turbines operate at. It is envisaged that plants based on large arrays of dishes would operate by collecting the steam from all the dishes and transporting it to a central power block via a steam line network. Transient modelling for a solar thermal energy plant is crucial for the accurate estimation of its performance. Furthermore, an accurate model can provide insights into the plant’s design and possibilities for optimisation. Another feature of a transient model is its usefulness in developing an automatic control system. This paper reviews the transient model of a dish steam cavity receiver developed by Siangsukone [1] and compares it with a new model currently under development at the ANU Solar Thermal Group. Both models are described and compared. A qualitative analysis is also included discussing the relative merits of each approach. Experimental results of the new dish are compared with a simulation, which is part of ongoing work by the authors. 3. Dish Systems at ANU