塔式太阳能电站光热耦合系统能量时空协同传输机理研究

项目名称： 塔式太阳能电站光热耦合系统能量时空协同传输机理研究

项目编号： No.51306171

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 能源与动力工程

项目作者： 余强

作者单位： 中国科学院电工研究所

项目金额： 25万元

中文摘要： 塔式太阳能电站和常规电站相比，最直接的区别是利用"聚光-吸热"装置代替了传统的锅炉系统进行能量转换。由于电站能量来源的不稳定性，因此光-热耦合系统受天气情况影响比较大，造成其运行工况变化频繁、复杂，使其具有多变量耦合的强非线性、时变性的特点，导致其运行模式多样和复杂。为了研究光-热耦合系统能量时空协同传输转换规律及耦合系统的动、静特性，本课题一方面通过动力学建模手段，建立起耦合系统涉及非成像光学、传热学及流体动力学等的动态数学模型，搭建起模拟平台，据此对耦合系统的能量传输规律及耦合系统特性进行全面的分析，并全面评估系统结构对系统效率的影响。另一方面，本项目利用北京延庆国内首个塔式电站的实验平台，对模型进行改进及优化。本课题结果可以为塔式电站的优化设计及高效安全运行提供指导方案。

中文关键词： 塔式光热电站；协同传输；光热耦合系统；能流密度；系统模拟

英文摘要： The"Concentrator-Receiver"couple system,which is distinguished from the boiler of conventional coal-fired plants, is the most important equipment in solar power tower plants. Due to the instability of energy sources, the couple system is easily governed by the weather status, which makes the operation conditions complicated and changed frequently, and has the strongly nonlinearity, time-variance features with multiple variables, that makes the operation modes diversity and complexity. In order to study the energy cooperative transmission mechanism and dynamic, steady characteristics of light-heat couple system, on the one hand, recurring to the dynamic modeling method, the couple system dynamic models are developed, which couple the models with optics, heat transfer and hydrodynamic knowledge. Based on the simulation platform, the energy cooperative transmission mechanism and system characteristics will be analyzed fully, and the system efficiency affected by system structure will be evaluated in detail. On the other hand, the developed models will be improved and optimized based on the solar tower power plant experiment platform in Beijing. The result of this project is to provide a significant guidance for the optimal design and high-efficient operation of system in the future.

英文关键词： Solar Tower Power；Cooperative Transmission；Couple System；Solar Flux；System Simulation