微小通道内多组分生物质甲烷冷凝传热特性与多元两相流动行为的研究

项目名称： 微小通道内多组分生物质甲烷冷凝传热特性与多元两相流动行为的研究

项目编号： No.51506098

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 能源与动力工程

项目作者： 李娟

作者单位： 南京林业大学

项目金额： 21万元

中文摘要： 强化冷凝相变传热过程是降低小型撬装生物质甲烷液化装置系统能耗，提高转化效率的关键。项目对多组分生物质甲烷在微小通道中冷凝传热流动性能和热力学相变过程与机理展开基础研究。具体内容包括： 通过基础实验、理论分析结合数值计算的方法，探索生物质甲烷物性、进口温度、流量、压力等关键参数对微小通道冷凝传热系数、压降与系统能耗的影响规律，建立生物质甲烷冷凝传热预测模型；获得多元两相耦合作用下生物质甲烷冷凝过程中气-液两相界面的形成、发展与演变过程，揭示介质物性、气液相密度与冷凝传热系数之间的关联规律。项目研究有望突破生物质资源高效转化的瓶颈，为实现小型撬装式生物质甲烷液化装置大规模商业化应用提供可借鉴的理论。

中文关键词： 生物质甲烷；微小通道；冷凝；两相流；撬装

英文摘要： It is the key to enhance the condensation heat transfer process for reducing energy consumption and increasing conversion efficiency in skid-mounted biomass methane liquefaction system. Fundamental research on condensation heat transfer and two-phase flow performance, thermodynamics phase-change process and mechanism for multi-component biomass methane in mini/micro channels is conducted. The specific content includes: The effects of physical properties , inlet temperature, flow rate, pressure of biomass methane on condensation heat transfer coefficient, pressure drop and the energy consumption in mini/micro will be studied through the basic test and theory analysis combined with numerical simulation; the biomass methane condensation heat transfer prediction model will be built. The formation, development and evolution of gas-liquid interface in condensation process under coupling of multi-component and two-phase will be obtained. The correlation between the property, gas-liquid density and condensation heat transfer coefficient will be revealed. The results in this project are expected to break the bottleneck of biomass resources efficient conversion, which will provide the theoretical reference for skid-mounted biomass methane liquefaction system in large-scale commercial application.

英文关键词： biomass methane;mini/micro channel;condensation;two-phase flow;skid-mounted