多能互补清洁供暖系统特性分析  

Characteristic Analysis of Multi-energy Complementary Clean Heating System

作　　者：耿直 段博文 王剑利 华康民 GENG Zhi;DUAN Bo-wen;WANG Jian-li;HUA Kang-min(School of Aero Engine,Zhengzhou University of Aeronautics,Zhengzhou,China,Post Code:450046;Huadian Zhengzhou Mechanical Design Institute Company Limited,Zhengzhou,China,Post Code:450046;Laboratory and Equipment Management Office,Zhengzhou University of Aeronautic,Zhengzhou,China,Post Code:450046)

机构地区：[1]郑州航空工业管理学院航空发动机学院,河南郑州450046 [2]华电郑州机械设计研究院有限公司,河南郑州450046 [3]郑州航空工业管理学院实验室与设备管理处,河南郑州450046

出　　处：《热能动力工程》2023年第11期175-184,共10页Journal of Engineering for Thermal Energy and Power

基　　金：河南省科技攻关资助项目(212102210009);河南省青年人才托举工程资助项目(2022HYTP021);河南省住房城乡建设科技计划资助项目(HNJS-2022-K57);教育部教指委高等学校能源动力类教学研究与实践资助项目(NSJZW2021Y-99);河南省高等学校虚拟仿真实验教学体系建设与研究(2021SJGLX024)。

摘　　要：为加速能源低碳转型,本文提出了一种基于太阳能、风能和地热能3类可再生能源多能互补的清洁耦合供暖方案,即在利用地热能供热的同时,将太阳能和风能联合其中实现辅助供热,从而突破太阳能与风能的不稳定性及间歇性等缺点,达到3类能源的合理配置效果。首先,在EBSILON软件中搭建了集热、储热、换热各能量转换与输运的热力模型,选定郑州典型供暖季的气象、地热等自然资源条件作为初始约束,研究了太阳能光热换热效率、供暖量及地热单元供暖输出等关键指标的变化规律。结果表明:光热转换效率集中分布在45%~60%;辐照较弱时,太阳能主要依靠储热装置放热维持机组热平衡,其最低供热谷值为27.268 kW;随着外界辐射能力的增强,系统供热量最大可达40.311 kW;在夜晚时段,地热机组供热量出力占主导,输出负荷最大达165.556 kW;相较于日照条件较好的白天,经太阳能预加热的回水温度有所升高,致使地热机组日间供热量相对减小,最小供热量为163.637 kW;当地热温度梯度上升5℃时,该机组供热量平均增高6.548 kW;风能利用单元伴随着机组负荷与外部风资源的波动,灵活地满足后端热泵机组处电压缩机用能需求,确保用户侧供暖的长效稳定。In order to accelerate the low-carbon transformation of energy,this paper proposed a clean coupling heating scheme based on the multi renewable energy complementation of solar energy,wind energy and geothermal energy,that is,while using geothermal energy for heating,solar energy and wind energy were combined to achieve auxiliary heating,so as to break through the shortcomings of instability and intermitency of solar and wind energy and achieve the reasonable allocation effect of the three energy sources.First of all,the thermodynamic model of energy conversion and transportation of heat collection,heat storage and heat exchange was built in the EBSILON software.The meteorological,geothermal and other natural resource conditions in typical heating seasons of Zhengzhou were selected as the initial constraints,and the change laws of key indicators such as solar heat and light heat transfer efficiency,heating capacity and geothermal unit heating output were studied.The results showed that the photothermal conversion efficiency was concentrated in 45%to 60%;when the radiation was weak,the solar energy mainly relied on the heat release of the heat storage device to maintain the heat balance of the unit,and the minimum heating valley value was 27.268 kW;with the enhancement of external radiation capacity,the maximum heating capacity of the system could reach 40.311 kW;at night,the output of heat supply of geothermal units was dominant,and the maximum output load was 165.556 kW;compared to the daytime with good sunshine conditions,the return water temperature preheated by solar energy had been increased,resulting in a relative decrease in the daytime heat supply of geothermal units,with the minimum heat supply of 163.637 kW;when the geothermal temperature gradient rised by 5 C,the heat supply of the unit increased by 6.548 kW on average;with the fluctuation of unit load and external wind resources,the wind energy utilization unit could flexibly meet the energy demand of the electric compressor at the back-end heat pump u

关 键 词：太阳能 地热能 风能 清洁采暖 热泵循环 多能互补 

分 类 号：TK511[动力工程及工程热物理—热能工程] TK81[建筑科学—供热、供燃气、通风及空调工程] TU833