Heat transfer prediction modeling method combining threedimensional high-precision and one-dimensional real-time dynamic simulations  

作　　者：Xuanang ZHANG Ping YUAN Gequn SHU Xuan WANG Hua TIAN 

机构地区：[1]State Key Laboratory of Engines,Tianjin University,Tianjin,300072,China [2]Department of Thermal Science and Energy Engineering,University of Science and Technology of China,Hefei,230027,China

出　　处：《Science China(Technological Sciences)》2025年第3期82-96,共15页中国科学(技术科学英文版)

基　　金：supported by the National Key R&D Program of China(Grant No.2022YFE0100100)。

摘　　要：Heat exchangers are the core components of energy transfer and conversion and are widely used in the energy,chemical,and other fields.In an actual operational process,load changes lead to variations in the operating conditions of the heat exchanger.Evaluating the heat-transfer performance is crucial for the safe and efficient operation of the system.To realize high-precision heat transfer prediction through simulations,instead of using traditional solid equipment,this study proposed a heat transfer prediction modeling method that combines three-dimensional high-precision and one-dimensional real-time dynamic simulations.This method combines the high-precision advantage of three-dimensional simulation with the real-time advantage of one-dimensional simulation.To verify the feasibility of the modeling method,a heat transfer prediction model was constructed based on the heat transfer channel structure of a CO_(2)mixture heat transfer characteristic experimental test system.The steady-state and dynamic heat transfer characteristics of CO_(2)/R32 mixtures were simulated and experimentally tested.Finally,the real-time operational capability of the heat transfer prediction model was verified using a real-time simulator.The results showed that the heat transfer prediction model modeling method proposed in this study could improve the accuracy by 1.75-4.64 times compared with the conventional one-dimensional dynamic model.The established heat transfer prediction model exhibited good accuracy for both dynamic and steady-state processes.The average relative errors with the experimental results were in the range of 0.91%-2.83%under six sets of experimental tests.Thus,the proposed heat transfer prediction model can predict the heat transfer process in real-time under all experimental heat source conditions.

关 键 词：heat transfer prediction model CO_(2)mixture heat exchanger real-time simulation 

分 类 号：TG1[金属学及工艺—金属学]