寒区路基地源热泵系统的热力计算模型及其在冻胀病害防控中的应用  

Thermodynamic Model of a Ground Source Heat Pump System for Embankments in Cold Regions and Its Application in the Freezing Damage Control

作　　者：胡田飞 刘济华 岳祖润[1] 张翊敏 HU Tianfei;LIU Jihua;YUE Zurun;ZHANG Yimin(State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering Structures(Shijiazhuang Tiedao University),Shijiazhuang 050043,Hebei Province,China;School of Civil Engineering,Shijiazhuang Tiedao University,Shijiazhuang 050043,Hebei Province,China)

机构地区：[1]省部共建交通工程结构力学行为与系统安全国家重点实验室(石家庄铁道大学),河北省石家庄市050043 [2]石家庄铁道大学土木工程学院,河北省石家庄市050043

出　　处：《中国电机工程学报》2025年第3期1022-1033,I0018,共13页PROCEEDINGS OF THE CHINESE SOCIETY FOR ELECTRICAL ENGINEERING

基　　金：国家自然科学基金项目(52172347);中央引导地方科技发展资金项目(226Z5402G);河北省自然科学基金项目(E2023210064)。

摘　　要：基于地源热泵的人工供热方法是寒区路基冻害防控的一种新措施。该文建立路基专用热泵的稳态热力计算模型,用于热泵选型匹配与优化设计。建立主要部件压缩机、冷凝器、节流器、蒸发器的结构参数与环境参数、制冷剂状态参数之间的函数关系,提出子模型间耦合方法,基于Python语言编制程序。首先,选择压缩机和制冷剂类型,拟定供热温度和集热温度;然后,依次调用4个子程序,以部件目标参数的计算值与拟定值是否相等为收敛判据,以制冷剂状态参数的计算值与拟定值是否相等为终止判据。循环计算收敛时对应的部件结构参数即为优化结果。文中选择准池铁路某冻害路基设计供热方案,验证程序可靠性。结果表明,热泵性能达到预设水平,保证了路基供热方案的有效性。Artificial heating based on a ground source heat pump is a new method for preventing embankment freezing damage in cold regions.This study establishes a steady-state thermal calculation model of a special heat pump employed for embankments.The model can aid in the selection,matching,and optimal design of the key components of the heat pump.A functional relationship between the structural,environmental,and refrigerant-state parameters for four main components,namely the compressor,condenser,restrictor,and evaporator,is established.Four corresponding submodels are developed,and a coupling method between the submodels is also put forward.The algorithm program is compiled using the Python software.The calculation process is as follows:First,the type of compressor and refrigerant is selected,and the heat exchange temperature values are predetermined.Then the above four subroutines are called in turn,the convergence criterion of the subroutine is set based on whether the calculated structural parameter is equal to the target value or not,and the termination criterion is set based on whether the calculated refrigerant-state parameter is equal to the target value or not.When the subroutine cycle calculation reaches the convergence accuracy,the structural parameters of the corresponding components are taken as the optimized design results.As a field demonstration,a heating scheme is designed for the frost embankment of the Jungar-Shenchi Railway to verify the reliability of the calculation program.The results confirm that the heating performance reaches the preset level,thus effectively ensuring the reliability of the embankment heating scheme.

关 键 词：冻土路基 地源热泵 计算模型 压缩机 冷凝器 蒸发器 供热性能 现场试验 

分 类 号：TK11[动力工程及工程热物理—热能工程]