Identification and characterisation of non-flammable and low-GWP fluid mixtures for thermodynamic cycles in Carnot Batteries

卡诺电池热力循环中不可燃且低 GWP 流体混合物的识别和表征

• 批准号: 526234111
• 负责人: Professor Dr.-Ing. Dieter Brüggemann
• 金额: --
• 依托单位: Lehrstuhl für Technische Thermodynamik und Transportprozesse
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/526234111?language=en
• 关键词: Identification; characterisation; non; flammable; low

In the project proposed here, working fluids suitable for Carnot Batteries shall be identified and characterized. The focus is placed on zeotropic mixtures of natural hydrocarbons and unsaturated partially halogenated refrigerants. By an inverse engineering method, favorable mixture components and concentrations are determined in order to obtain an efficient, non-flammable and low-GWP working fluid. Identified mixtures are examined experimentally according to their flammability, heat transfer characteristics and cycle performance. Main steps are: (1) the fluid selection according to the inverse design approach, (2) the prediction and experimental characterization of flammability, (3) heat transfer measurements and identification of suitable correlations, (4) a performance evaluation of the working fluid mixture on subsystem level. With an existing test rig power output and second law efficiency on ORC system level is measured for full and part load as well as for pure and selected mixtures. Next to this, pump and expander efficiency are also evaluated. Located in the Priority Programme this project is planned in a way that it is closely networked with other projects. It coordinates and interacts with them to deliver and receive results.

在这里提出的项目中，应识别和表征适用于卡诺电池的工作液。重点放在天然碳氢化合物和不饱和部分卤化制冷剂的共沸混合物上。通过逆向工程的方法，确定了合适的混合物组成和浓度，以获得一种高效、不可燃、低GWP的工作液。根据可燃性、换热特性和循环性能对已鉴定的混合物进行了实验检验。主要步骤是：(1)根据逆设计方法进行流体的选择；(2)可燃性的预测和实验表征；(3)换热测量和确定合适的关联式；(4)在子系统水平上对工质混合物的性能进行评价。利用现有的试验台，测量了ORC系统水平上的功率输出和第二定律效率，包括全负荷和部分负荷以及纯混合物和选定混合物的效率。此外，还对泵和膨胀机的效率进行了评估。该项目位于优先方案内，其规划方式与其他项目密切相关。它与他们协调和互动，以交付和接收结果。