太阳能跨季节储热水体几何形状对系统含税热价的敏感性研究  

STUDY OF SENSITIVITY OF GEOMETRY OF SOLAR SEASONAL HEAT STORAGE WATER PIT TO TAX-INCLUSIVE HEAT PRICE

作　　者：赵沙沙 贺明飞 李金平[1,2] 杨铭 原郭丰[3,4] 王志峰 Zhao Shasha;He Mingfei;Li Jinping;Yang Ming;Yuan Guofeng;Wang Zhifeng(School of Energy and Power Engineering,Lanzhou University of Technology,Lanzhou 730050,China;Gansu Key Laboratory of Complementary Energy System of Biomass and Solar Energy,Lanzhou 730050,China;Institute of Electrical Engineering,Chinese Academy of Sciences,Beijing 100190,China;Key Laboratory of Solar Thermal Energy and Photovoltaic Systems,Chinese Academy of Sciences,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]兰州理工大学能源与动力工程学院,兰州730050 [2]甘肃省生物质能与太阳能互补能源系统重点实验室,兰州730050 [3]中国科学院电工研究所,北京100190 [4]中国科学院太阳能热利用与光伏系统重点实验室,北京100190 [5]中国科学院大学,北京100190

出　　处：《太阳能学报》2024年第8期407-413,共7页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(52293415,52293411);国家重点研发计划(2022YFC3802404-02)。

摘　　要：针对水体型太阳能跨季节储热供热系统,以太阳能集热场得热量和跨季节储热水体温度场的动态模拟为基础,在TRNSYS仿真平台中建立系统动态热经济性分析模型,实现全系统动态热性能和经济性能耦合分析。此模型是对太阳能集热场中定日镜场采光面积、跨季节储热水体体积、水体几何形状、太阳能集热场质量流量、资金内部收益率等关键参数进行敏感性分析和优化的重要工具。该研究主要分析了储热水体几何形状对系统含税热价的敏感性,得出以下结论:对于万立方米级的圆柱形储热水体,水体热损、含税热价与水体高径比呈上开口的类抛物线关系,当水体高径比为1∶2时,水体的热损低至30.74 kWh/m^(3),对应的含税热价低至0.470元/kWh,与区间高点的含税热价相比低9.6%;水体深度由5 m变化至25 m过程中,水体深度为19 m时热价可低至0.482元/kWh,与区间高点的含税热价相比低13.0%。Based on the dynamic simulation of the heat gain of the solar collector field and the temperature field of the water pit for solar seasonal heat storage,a dynamic thermal economy analysis model of the system is established in the TRNSYS simulation platform for the water pit for solar seasonal heat storage heating system,and the dynamic thermal performance and economic performance coupling analysis of the whole system is realized.This model is an important tool for sensitivity analysis and optimization of key parameters such as the aperture area of heliostat field,solar seasonal heating storage(SSHS)volume,geometric shape,mass flow of solar heat collection field and internal rate of return of funds.This study analyzes the sensitivity of the geometry of SSHS to the heat price including tax,and draws the following conclusions:the heat loss of the water pit is related to the heat price including tax of the system and the ratio of height to diameter of the water pit in an upward opening parabolic-like relationship for the 10000 m^(3)class of cylindrical water pit for solar seasonal heat storage.When the ratio of height to diameter is 1∶2,the heat loss of SSHS is low,and the corresponding tax-included heat price is 0.470 CNY/kWh,which is 9.6%lower than the higher tax-included heat price.The heat loss of SSHS and the heat price including tax first decrease and then increase with the increase of SSHS height.When the height of SSHS is 19 m,the heat price including tax is 0.482 CNY/kWh,which is 13.0%lower than higher tax-included heat price.

关 键 词：太阳能 跨季节储热 动态模拟 热经济性 储热水体 

分 类 号：TK519[动力工程及工程热物理—热能工程]