Heat Transfer in Dispersed Multiphase Flows with Droplets and Particles

具有液滴和颗粒的分散多相流中的传热

• 批准号: RGPIN-2020-06227
• 负责人: Naterer, Greg
• 金额: $ 4.01万
• 依托单位: University of Prince Edward Island
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=760248
• 关键词: Heat; Transfer; Dispersed; Multiphase; Flows

Driven by an increasing need to improve energy efficiency and reduce greenhouse gas emissions, researchers are developing faster and more accurate predictive models of thermal engineering systems. Through numerical and experimental methods, this research aims to better understand, predict and control the transport phenomena in multiphase flows with droplets and particles. Applications are focused on marine icing processes, flow assurance in subsea oil and gas pipelines, and thermochemical hydrogen production with a copper-chlorine (Cu-Cl) cycle. The objectives are to develop new design tools that provide more accurate, robust and reliable predictions and measurements of multiphase processes. Emphasis is placed on physical processes with limited current understanding in the technical literature, particularly simultaneous processes of phase change, binary constituents, chemical reactions, and turbulence. In addition to numerical modeling, the research aims to conduct experiments in the Multiphase Flow Laboratory at Memorial University to acquire measured data for model verification. This will provide exceptional learning opportunities for the training of highly qualified personnel in a research environment that is stimulating and inclusive. The proposed research aims to apply the research outcomes to hydrogen energy, icing, and flow assurance applications. These include higher thermal efficiency of unit operations in the Cu-Cl cycle, more effective de-icing of structures (ships, wind turbines and overhead power lines), and better flow assurance during hydrate formation in subsea oil and gas pipelines. Ultimately the research aims to scale-up and eventually link the Cu-Cl cycle with Canada's next generation of nuclear reactors or other heat sources (such as solar energy or industrial waste heat) and demonstrate a Cu-Cl pilot plant at a larger industrial scale. Clean hydrogen production by the Cu-Cl cycle could potentially lead to a significant solution to the problem of climate change. By improving the solution accuracy and measurement of multiphase processes in these applications, new technologies can be developed to improve the energy efficiency and system performance. The research would also have a beneficial impact on other multiphase systems with droplets and particles, such as spray coatings from solidified impinging droplets, particle decomposition in fluidized beds, and production of powders and pharmaceuticals, among others.

在提高能源效率和减少温室气体排放的需求日益增长的推动下，研究人员正在开发更快，更准确的热工系统预测模型。通过数值和实验方法，本研究旨在更好地理解、预测和控制液滴和颗粒多相流中的传输现象。应用集中在海洋结冰过程，海底石油和天然气管道的流动保证，以及利用铜-氯（Cu-Cl）循环的热化学制氢。其目标是开发新的设计工具，提供更准确，更强大，更可靠的预测和多相过程的测量。重点放在物理过程与有限的技术文献，特别是相变，二元组分，化学反应和湍流的同时进行的过程目前的理解。除了数值模拟，该研究的目的是在纪念大学的多相流实验室进行实验，以获得测量数据进行模型验证。这将为在激励和包容的研究环境中培训高素质人员提供特殊的学习机会。拟议的研究旨在将研究成果应用于氢能，结冰和流动保障应用。这包括在铜-氯循环中单元操作的更高热效率，更有效的结构（船舶，风力涡轮机和架空电力线）除冰，以及在海底石油和天然气管道水合物形成期间更好的流动保证。最终，该研究旨在扩大规模，并最终将Cu-Cl循环与加拿大下一代核反应堆或其他热源（如太阳能或工业废热）联系起来，并在更大的工业规模上展示Cu-Cl试验工厂。通过Cu-Cl循环生产清洁氢可能会导致气候变化问题的重要解决方案。通过提高这些应用中多相过程的求解精度和测量，可以开发新技术来提高能源效率和系统性能。该研究还将对具有液滴和颗粒的其他多相系统产生有益的影响，例如固化撞击液滴的喷涂，流化床中的颗粒分解以及粉末和药物的生产等。