Modeling and Simulation of Transcritical CO2 Heat Pump System with Throttle Valve

2010 International Conference on Electrical and Control Engineering Pub Date : 2010-06-25 DOI:10.1109/ICECE.2010.324

Junlan Yang, Yitai Ma, M. Li, H. Tian

{"title":"Modeling and Simulation of Transcritical CO2 Heat Pump System with Throttle Valve","authors":"Junlan Yang, Yitai Ma, M. Li, H. Tian","doi":"10.1109/ICECE.2010.324","DOIUrl":null,"url":null,"abstract":"In order to analyze the characteristics of the transcritical CO2 heat pump system with throttle valve, it is necessary to simulate and further to optimize control the system operation. Therefore, the mathematical model for this system is developed in this paper. The simulation values are validated by the test data. The results show that the average error for cooling coefficient of performance (COP) and heating coefficient of performance (COPh) between simulation and experiment values is 10% or so. Then with the validated model, system performance is simulated for various operating parameters. Decreasing the inlet temperature and increasing the mass flow rate of cooling water both can increase the system performance. Whereas, increasing the inlet temperature and mass flow rate of the chilling water is slightly favorable. Compared to other parameters, the effect of water temperature at the inlet to the gas cooler on system performance is more significant. At last, the high pressure control strategy is introduced since there is an optimum high pressure corresponding to the maximum COP.","PeriodicalId":6419,"journal":{"name":"2010 International Conference on Electrical and Control Engineering","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2010-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2010 International Conference on Electrical and Control Engineering","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICECE.2010.324","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 1

Abstract

In order to analyze the characteristics of the transcritical CO2 heat pump system with throttle valve, it is necessary to simulate and further to optimize control the system operation. Therefore, the mathematical model for this system is developed in this paper. The simulation values are validated by the test data. The results show that the average error for cooling coefficient of performance (COP) and heating coefficient of performance (COPh) between simulation and experiment values is 10% or so. Then with the validated model, system performance is simulated for various operating parameters. Decreasing the inlet temperature and increasing the mass flow rate of cooling water both can increase the system performance. Whereas, increasing the inlet temperature and mass flow rate of the chilling water is slightly favorable. Compared to other parameters, the effect of water temperature at the inlet to the gas cooler on system performance is more significant. At last, the high pressure control strategy is introduced since there is an optimum high pressure corresponding to the maximum COP.

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

带节流阀的跨临界CO2热泵系统建模与仿真

为了分析带节流阀的跨临界CO2热泵系统的特性，有必要对系统运行进行仿真并进一步优化控制。为此，本文建立了该系统的数学模型。实验数据验证了仿真结果的正确性。结果表明，冷却性能系数(COP)和加热性能系数(COPh)的模拟值与实验值的平均误差在10%左右。然后利用验证过的模型，对系统在不同运行参数下的性能进行了仿真。降低进口温度和提高冷却水质量流量都能提高系统性能。而提高入口温度和冷却水质量流量则略有利。与其他参数相比，气体冷却器入口水温对系统性能的影响更为显著。最后，由于存在一个与最大COP相对应的最优高压，介绍了高压控制策略。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

来源期刊

2010 International Conference on Electrical and Control Engineering

自引率

0.00%

发文量