摘要
为探讨新型套管式回热器对提升CO_(2)水合物蓄冷系统性能的影响,该文通过实验与仿真分析,深入探讨新型回热器在不同充注压力条件下对CO_(2)水合物的生成及蓄冷特性的作用。首先,实验对比新旧回热器的性能,并在纯水体系中找到最佳工况。其次,利用MATLAB软件构建系统仿真模型,对回热器的管道材料、壁厚、槽距及槽高4种结构参数进行优化。结果表明,在4.0 MPa的最佳工况下,新型回热器能显著提升系统性能。具体表现为:平均蓄冷速率达到6.23 kW;潜热蓄冷量1 841.06 kJ;显热蓄冷量2 301.33 kJ;总蓄冷量4 142.39 kJ;CO_(2)水合物生成质量6.23 kg;系统制冷系数(coefficient of performance,COP)达2.76。仿真优化显示,壁厚越薄、槽距越小、槽高越深的回热器强化换热效果越佳。结果可为CO_(2)水合物蓄冷系统的优化设计提供理论依据,对推动CO_(2)捕集与利用技术的发展具有一定参考价值。
This study aims to explore the application effectiveness of a novel shell-and-tube superheater in a CO_(2) hydrate cold storage system.Through experimental and simulation analysis,the study investigates the impact of the new type of pipe superheater on CO_(2) hydrate formation and cold storage characteristics under different filling pressures.Initially,the experimental section compares the performance of the new and old superheater and identifies the optimal operating conditions in a pure water system.Subsequently,a system simulation model is constructed using MATLAB software to optimize four structural parameters of the superheater,i.e.pipe material,wall thickness,groove spacing,and groove depth.The results demonstrate that under the optimal condition of 4.0 MPa,the novel superheater significantly enhances system performance.Specifically,the average cold storage rate reaches 6.23 kW,the latent heat storage is 1 841.06 kJ,the sensible heat storage is 2 301.33 kJ,the total heat storage is 4 142.39 kJ,the CO_(2) hydrate formation mass is 6.23 kg,and the system COP(coefficient of performance)is 2.76.Simulation optimization reveals that the superheater's heat transfer efficiency is maximized by reducing wall thickness and groove spacing,while increasing groove depth.This study provides a theoretical basis for the optimal design of CO_(2) hydrate cold storage systems,and it is of significant importance in advancing CO_(2) capture and utilization technologies.
作者
庞治海
谢应明
颜成辉
俞钱程
杨亮
豆斌林
PANG Zhihai;XIE Yingming;YAN Chenghui;YU Qiancheng;YANG Liang;DOU Binlin(School of Energy and Power Engineering,University of Shanghai for Science and Technology,Yangpu District,Shanghai 200093,China)
出处
《中国电机工程学报》
北大核心
2025年第22期8915-8923,I0021,共10页
PROCEEDINGS OF THE CHINESE SOCIETY FOR ELECTRICAL ENGINEERING
基金
国家自然科学基金项目(50806050)。
关键词
CO_(2)水合物
仿真
新型回热器
蓄冷
强化换热
CO_(2)hydrate
simulation
new type superheater
cold storage
enhanced heat transfer
