{"title":"一种新的多相换热器耦合离散化建模方法","authors":"Zhenhao Chu, Daocang Che, Zhaowang Xia","doi":"10.2298/tsci220909044c","DOIUrl":null,"url":null,"abstract":"This paper presents a novel coupling discretization method for modeling multi-phase heat exchangers. In the method, the MBM (Moving Boundary Method) is adopted as the solver to solve each of the FVCVs (Finite Volume Control Volume) divided by the method of FVM (Finite Volume Method). When all FVCVs are solved, the FVCV boundary values are updated based on the relationships of FVCVs. The solving procedure is initiated when the starting values of HSF (Hot Source Fluid) and CSF (Cold Source Fluid) outlet of the heat exchanger are given by the user and terminated when these values no longer change anymore. The experimental results of a plate heat exchanger with R245fa and Therminol 66 as CSF and HSF are adopted to validate the proposed model. Simulation results of 11 operating conditions show that the maximum deviation is within ?4% compared to the measured values. The model presented in this paper is appropriate for heat exchangers under operating conditions either with or without fluid phase change, such as the evaporator and condenser in the ORC (Organic Rankine Cycle) system.","PeriodicalId":23125,"journal":{"name":"Thermal Science","volume":"1 1","pages":""},"PeriodicalIF":1.1000,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A novel coupling discretization method for modeling multi-phase heat exchangers\",\"authors\":\"Zhenhao Chu, Daocang Che, Zhaowang Xia\",\"doi\":\"10.2298/tsci220909044c\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"This paper presents a novel coupling discretization method for modeling multi-phase heat exchangers. In the method, the MBM (Moving Boundary Method) is adopted as the solver to solve each of the FVCVs (Finite Volume Control Volume) divided by the method of FVM (Finite Volume Method). When all FVCVs are solved, the FVCV boundary values are updated based on the relationships of FVCVs. The solving procedure is initiated when the starting values of HSF (Hot Source Fluid) and CSF (Cold Source Fluid) outlet of the heat exchanger are given by the user and terminated when these values no longer change anymore. The experimental results of a plate heat exchanger with R245fa and Therminol 66 as CSF and HSF are adopted to validate the proposed model. Simulation results of 11 operating conditions show that the maximum deviation is within ?4% compared to the measured values. The model presented in this paper is appropriate for heat exchangers under operating conditions either with or without fluid phase change, such as the evaporator and condenser in the ORC (Organic Rankine Cycle) system.\",\"PeriodicalId\":23125,\"journal\":{\"name\":\"Thermal Science\",\"volume\":\"1 1\",\"pages\":\"\"},\"PeriodicalIF\":1.1000,\"publicationDate\":\"2023-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Thermal Science\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://doi.org/10.2298/tsci220909044c\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"THERMODYNAMICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Thermal Science","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.2298/tsci220909044c","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"THERMODYNAMICS","Score":null,"Total":0}
A novel coupling discretization method for modeling multi-phase heat exchangers
This paper presents a novel coupling discretization method for modeling multi-phase heat exchangers. In the method, the MBM (Moving Boundary Method) is adopted as the solver to solve each of the FVCVs (Finite Volume Control Volume) divided by the method of FVM (Finite Volume Method). When all FVCVs are solved, the FVCV boundary values are updated based on the relationships of FVCVs. The solving procedure is initiated when the starting values of HSF (Hot Source Fluid) and CSF (Cold Source Fluid) outlet of the heat exchanger are given by the user and terminated when these values no longer change anymore. The experimental results of a plate heat exchanger with R245fa and Therminol 66 as CSF and HSF are adopted to validate the proposed model. Simulation results of 11 operating conditions show that the maximum deviation is within ?4% compared to the measured values. The model presented in this paper is appropriate for heat exchangers under operating conditions either with or without fluid phase change, such as the evaporator and condenser in the ORC (Organic Rankine Cycle) system.
期刊介绍:
The main aims of Thermal Science
to publish papers giving results of the fundamental and applied research in different, but closely connected fields:
fluid mechanics (mainly turbulent flows), heat transfer, mass transfer, combustion and chemical processes
in single, and specifically in multi-phase and multi-component flows
in high-temperature chemically reacting flows
processes present in thermal engineering, energy generating or consuming equipment, process and chemical engineering equipment and devices, ecological engineering,
The important characteristic of the journal is the orientation to the fundamental results of the investigations of different physical and chemical processes, always jointly present in real conditions, and their mutual influence. To publish papers written by experts from different fields: mechanical engineering, chemical engineering, fluid dynamics, thermodynamics and related fields. To inform international scientific community about the recent, and most prominent fundamental results achieved in the South-East European region, and particularly in Serbia, and - vice versa - to inform the scientific community from South-East European Region about recent fundamental and applied scientific achievements in developed countries, serving as a basis for technology development. To achieve international standards of the published papers, by the engagement of experts from different countries in the International Advisory board.