Investigation on ejector design for CO₂ heat pump applications using Dymola
- 作者: Metsue A.1, Bartosiewicz Y.1, Poncet S.2
-
隶属关系:
- Institute Mechanics, Materials, and Civil Engineering (iMMC), Université catholique de Louvain (UCLouvain)
- Mechanical Engineering Department, Université de Sherbrooke
- 期: 卷 112, 编号 4 (2023)
- 页面: 227-236
- 栏目: Original Study Articles
- URL: https://journals.rcsi.science/0023-124X/article/view/267763
- DOI: https://doi.org/10.17816/RF635384
- ID: 267763
如何引用文章
开放存取
##reader.subscriptionAccessGranted##
订阅存取
详细
In this paper, the Dymola modelling tool is used to study the influence of ejector design onto the whole heat pump cycle working with carbon dioxide. The cycle is built using the components provided by the TIL Modelica library. It is found that the ejector models in TIL are quite limited, namely by their inability to properly capture the on-design plateau and rapid decrease in performance in off-design operation. Therefore, an in-house state-of-the-art ejector model, originally developed in Python, is implemented as a Dymola object. This model is then calibrated onto CO₂ experimental data. The operation of a simple CO₂ heat pump system is investigated, with focus on the ejector sizing at fixed geometry. It is found that there exists an ejector size that maximises the COP of the cycle. Furthermore, critical ejector pressure is not reached at this optimum COP point; the ejector is operating well under the on-design regime.
作者简介
Antoine Metsue
Institute Mechanics, Materials, and Civil Engineering (iMMC), Université catholique de Louvain (UCLouvain)
编辑信件的主要联系方式.
Email: antoine.metsue@usherbrooke.ca
比利时, Louvain-la-Neuve
Yann Bartosiewicz
Institute Mechanics, Materials, and Civil Engineering (iMMC), Université catholique de Louvain (UCLouvain)
Email: yann.bartosiewicz@uclouvain.be
比利时, Louvain-la-Neuve
Sébastien Poncet
Mechanical Engineering Department, Université de Sherbrooke
Email: sebastien.poncet@usherbrooke.ca
加拿大, boulevard de l’Université, 2500, Sherbrooke
参考
- Liu J, Wang L, Jia L, Xue H. Thermodynamic analysis of the steam ejector for desalination applications. Appl. Therm. Eng. 2019;159(1):113883.
- Ipakchi O, Mosaffa AH, Garousi Farshi L. Ejector based CO₂ transcritical combined cooling and power system utilizing waste heat recovery: A thermoeconomic assessment. Energy Convers. Manag. 2019;186(1):462–472.
- Besagni G, Mereu R, Inzoli F. Ejector refrigeration: A comprehensive review. Renew. Sustain. Energy Rev. 2016;53(1):373–407.
- Aidoun Z, Ameur K, Falsafioon M, Badache M. Current Advances in Ejector Modeling, Experimentation and Applications for Refrigeration and Heat Pumps. Part 1: Single-Phase Ejectors. Inventions. 2019;4(1):15.
- Aidoun Z, Ameur K, Falsafioon M, Badache M. Current Advances in Ejector Modeling, Experimentation and Applications for Refrigeration and Heat Pumps. Part 2: Two-Phase Ejectors. Inventions. 2019;4(1):16.
- Tashtoush BM, Al-Nimr MA, Khasawneh MA. A comprehensive review of ejector design, performance, and applications. Appl. Energy. 2019;240(1):138–172.
- Elbel S, Hrnjak P. Experimental validation of a prototype ejector designed to reduce throttling losses encountered in transcritical R744 system operation. Int. J. Refrig. 2008;31(3):411–422.
- Taslimi Taleghani S, Sorin M, Poncet S. Modeling of two-phase transcritical CO₂ ejectors for on-design and off-design conditions. Int. J. Refrig. 2018;87(1):91–105.
- Metsue A, Debroeyer R, Poncet S, Bartosiewicz Y. An improved thermodynamic model for supersonic real-gas ejectors using the compound-choking theory. Energy. 2021. (In Print).
- Chen Y, Chen Z, Chen Z, Yuan X. Dynamic modeling of solarassisted ground source heat pump using Modelica. Appl. Therm. Eng. 2021;196(1):117324.
- Liu F, Qiu W, Deng J, et al. Multi-objective nonsimultaneous dynamic optimal control for an ejector expansion heat pump with thermal storages. Appl. Therm. Eng. 2020;168(1):114835.
- Hafner A, Försterling S, Banasiak K. Multi-ejector concept for R-744 supermarket refrigeration. Int. J. Refrig. 2014;43(1):1–13.
- Liu F, Deng J, Pan W. Model-based Dynamic Optimal Control of an Ejector Expansion CO₂ Heat Pump Coupled with Thermal Storages. Energy Procedia. 2018;152(1):156–161.
- Zhu Y, Li C, Zhang F, Jiang P-X. Comprehensive experimental study on a transcritical CO₂ ejector-expansion refrigeration system. Energy Convers. Manag. 2017;151(1):98–106.
补充文件
