1.Multi-field coupling(多场耦合) and system strengthening of high temperature multiphase reaction system(多相反应体系)
Research content:
- For the high-temperature multiphase reaction system, the discrete particle method (DEM) is used to study the momentum and mass distribution characteristics, the time-space multi-scale characteristics of the transmission flux and the transmission process of the charge, , and to grasp the distribution law of the solid charge.
- Based on the numerical simulation technology, the energy transfer and reaction law of high temperature multiphase heterogeneous reaction system(高温多相非均质反应体系) and the corresponding mathematical model are studied. The distribution of flow field, temperature field and pressure field in the system is mastered, and the coupling mechanism of energy transfer and chemical reaction is formed.
- Based on the field synergy principle(场协同理论) and the multi-field distribution law of high temperature multiphase reaction system, the synergistic strengthening theory of thermochemical reaction and energy transfer in high temperature multi-phase multiphase system is constructed, which provides a theoretical basis for improving the energy efficiency of high temperature and large volume reactor.
Expected goals:Through the collaborative research of this project, based on in-depth theoretical exploration, the numerical simulation method is used to realize the heat and mass transfer mechanism and macroscopic law inside the particle system; the numerical simulation method is also used to quantitatively visualize the fluid-solid interaction and the principle of reaction in high temperature; by using the combination of programming and simulation software to establish a multi-physics coupled model(多物理场耦合模型) of multi-phase and high-temperature reaction system’s flow field, temperature field, pressure field and so on. The goal is to publish more than 8 academic papers at home and abroad, to foster 5 or more SCI and EI searches, and 6 or more PhD and master students.
2.Efficient and comprehensive utilization of surplus energy resources which are difficult to recycle and industrial waste.
Research content:
- Investigate the intrinsic relationship between heat and mass transfer characteristics, various weak/phase transition effects and geometric and physical properties in phase change materials, and explore the influence of the formation mechanism, structure and evolution of multi-scale structures(多尺度结构) in multiphase systems on the heat and mass transfer and reaction performance, fluid-solid coupling heat and mass transport model of porous function(多孔功能)/phase change material is established, and the law of phase change/adsorption heat transfer in the multi-scale structure of space-time are mastered. Study and explore the relationship between material microstructure and macroscopic thermophysical properties, as well as phase transition kinetics and phase transition thermodynamics.
- Based on the principle of cascade storage and continuous utilization, research and prepare suitable phase change heat storage and transfer medium or functional fluid to obtain important thermophysical parameters such as microstructure, density, thermal conductivity, phase transition temperature and latent heat of phase change, explore Influencing factors and laws of thermal physical properties of heat storage and transfer medium. The porous heterogeneous composite phase change thermal storage material(多孔异质复合相变蓄热材料) was designed and prepared. The assembly characteristics(组装特性) and regulation mechanism of porous matrix(多孔基体) and heterogeneous phase change materials were studied. The scientific characterization of the assembled composites and the measurement of macroscopic thermophysical properties were studied. The effects of microstructures on the macroscopic thermophysical properties of composite materials were investigated. The phase change heat transfer mechanism and direct mathematical description of porous matrix heterogeneous phase change thermal storage materials (多孔基体异质相变蓄热材料)were explored.
- Step design and construction of phase change heat storage heat transfer system with intermittent input/continuous output for different temperature ranges, study the relationship between its parameters such as phase change storage/heat transfer characteristics and mechanism, storage/heat transfer efficiency, comprehensive heat transfer coefficient, non stationary response(非稳态响应) characteristics and heat storage materials, heat storage structures, and input/output parameters. Study on the enhanced heat transfer characteristics of phase change thermal storage materials and systems, explore the enhanced heat transfer method of high temperature phase change storage/heat transfer materials and systems, and enrich the application of enhanced heat transfer theory and technology in the field of phase change storage heat transfer. Study the design, testing and evaluation of thermoelectric materials and thermoelectric conversion systems in low and medium temperature regions. The thermodynamic analysis of the stored heat transfer conversion system(蓄传热转换系统) is carried out to comprehensively evaluate the residual energy recovery and utilization rate of the residual heat storage and conversion system, and the improvement of the residual energy quality.
- Combining theoretical research, numerical simulation and experimental research, it will conduct a comprehensive and systematic application study on energy algae can fix industrial carbon dioxide and sewage treatment technology, including industrial flue gas characteristics and corresponding treatment dispersal measures research, structure design of efficient and compact biological culture tank, analysis and optimization of technical parameters of the system, development of compact culture units and analysis of system economics.
Expected goal: Through the cooperative research of this project, it is expected to clarify the basic methods of design, preparation, characterization and control of phase change thermal storage materials; systematically understand the multi-scale and multi-phase coupled thermal mass transfer phenomenon ,physical mechanism, constitutive relations, influencing factors and laws, mechanism and method for enhancement of heat transfer and storage(蓄传热强化机理及方法);form a set of theories and methods including gas phase waste heat cascade storage, continuous recovery and conversion, mass heat collaborative transport(质热协同输运), etc. Lay the scientific foundation for the development of high-efficiency storage and conversion systems for gas-phase residual heat and the efficient recycling of gas-phase waste heat. The goal is to publish more than 8 papers, including more than 5 papers in SCI/EI; get 2 invention patents and software copyrights; foster 1-2 young and middle-aged academic leaders, and 6 doctoral and master students.