IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v221y2021ics0360544221000451.html
   My bibliography  Save this article

The difference between vapor injection cycle with flash tank and intermediate heat exchanger for air source heat pump: An experimental and theoretical study

Author

Listed:
  • Wang, Jijin
  • Qv, Dehu
  • Yao, Yang
  • Ni, Long

Abstract

As a widely used technique, vapor injection plays an important role in air source heat pumps (ASHPs) which operate across a wide range of ambient temperatures. The one of primary solutions has been reported to be vapor injection based on flash-tank (FT) and intermediate heat exchanger (IHX) loops respectively. In this paper, vapor injection and its two typical configurations are experimentally investigated in an ASHP prototype. The results show that in the vapor-injection based ASHPs, the performance of FT based ASHPs is better than that of IHX based ones, and injected vapor improves mass flow rate and distribution of working fluid, with a hidden decreasing effect of exhaust entropy. In order to explore theoretical reasons, a whole system model is presented that quantifies performance enhancement potential of FT based and IHX based ASHPs respectively. The calculation results show increased refrigerant mass flow rate, its optimum distribution, and moderate injected vapor entropy contribute to performance improvement of vapor-injection based ASHPs. Further, we also visualize synergy between refrigerant mass flow and injected entropy from perspective of negentropy. At the negentropy level, FT based rather than IHX based loop brings higher heating capacity and efficiency, which is consistent with measurements from experimental research.

Suggested Citation

  • Wang, Jijin & Qv, Dehu & Yao, Yang & Ni, Long, 2021. "The difference between vapor injection cycle with flash tank and intermediate heat exchanger for air source heat pump: An experimental and theoretical study," Energy, Elsevier, vol. 221(C).
  • Handle: RePEc:eee:energy:v:221:y:2021:i:c:s0360544221000451
    DOI: 10.1016/j.energy.2021.119796
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544221000451
    Download Restriction: Full text for ScienceDirect subscribers only

    File URL: https://libkey.io/10.1016/j.energy.2021.119796?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    References listed on IDEAS

    as
    1. Zhang, Long & Jiang, Yiqiang & Dong, Jiankai & Yao, Yang, 2018. "Advances in vapor compression air source heat pump system in cold regions: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 81(P1), pages 353-365.
    2. Li, Sihui & Gong, Guangcai & Peng, Jinqing, 2019. "Dynamic coupling method between air-source heat pumps and buildings in China’s hot-summer/cold-winter zone," Applied Energy, Elsevier, vol. 254(C).
    3. Cai, Jingyong & Zhang, Feng & Ji, Jie, 2020. "Comparative analysis of solar-air dual source heat pump system with different heat source configurations," Renewable Energy, Elsevier, vol. 150(C), pages 191-203.
    4. Yang, Jun Lan & Ma, Yi Tai & Li, Min Xia & Hua, Jun, 2010. "Modeling and simulating the transcritical CO2 heat pump system," Energy, Elsevier, vol. 35(12), pages 4812-4818.
    5. Zhang, Tiantian & Yang, Hongxing, 2019. "Heat transfer pattern judgment and thermal performance enhancement of insulation air layers in building envelopes," Applied Energy, Elsevier, vol. 250(C), pages 834-845.
    6. Jung, Jongho & Jeon, Yongseok & Cho, Wonhee & Kim, Yongchan, 2020. "Effects of injection-port angle and internal heat exchanger length in vapor injection heat pumps for electric vehicles," Energy, Elsevier, vol. 193(C).
    7. Wang, Wenyi & Li, Yaoyu, 2019. "Intermediate pressure optimization for two-stage air-source heat pump with flash tank cycle vapor injection via extremum seeking," Applied Energy, Elsevier, vol. 238(C), pages 612-626.
    8. Kim, Jaehong & Choi, Hwan-Jong & Kim, Kyung Chun, 2015. "A combined Dual Hot-Gas Bypass Defrosting method with accumulator heater for an air-to-air heat pump in cold region," Applied Energy, Elsevier, vol. 147(C), pages 344-352.
    9. Redón, A. & Navarro-Peris, E. & Pitarch, M. & Gonzálvez-Macia, J. & Corberán, J.M., 2014. "Analysis and optimization of subcritical two-stage vapor injection heat pump systems," Applied Energy, Elsevier, vol. 124(C), pages 231-240.
    10. Zhou, Chaohui & Ni, Long & Wang, Jun & Yao, Yang, 2020. "Investigation on the performance of ASHP heating system using frequency-conversion technique based on a temperature and hydraulic-balance control strategy," Renewable Energy, Elsevier, vol. 147(P1), pages 141-154.
    11. Nikolaidis, C. & Probert, D., 1998. "Exergy-method analysis of a two-stage vapour-compression refrigeration-plants performance," Applied Energy, Elsevier, vol. 60(4), pages 241-256, August.
    12. Kong, Minjin & Hong, Taehoon & Ji, Changyoon & Kang, Hyuna & Lee, Minhyun, 2020. "Development of building driven-energy payback time for energy transition of building with renewable energy systems," Applied Energy, Elsevier, vol. 271(C).
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Feng, Xu & Wu, Yuting & Du, Yanjun & Qi, Di, 2024. "Optimization and performance improvement of ultra-low temperature cascade refrigeration system based on the isentropic efficiency curve of single-screw compressor," Energy, Elsevier, vol. 298(C).
    2. Zou, Lingeng & Yu, Jianlin, 2024. "4E assessment of ejector-enhanced R290 heat pump cycle with a sub-cooler for cold region applications," Energy, Elsevier, vol. 298(C).
    3. Cheng, Jia-Hao & Cao, Xiang & Shao, Liang-Liang & Zhang, Chun-Lu, 2023. "Performance evaluation of a novel heat pump system for drying with EVI-compressor driven precooling and reheating," Energy, Elsevier, vol. 278(PB).
    4. Zhengrong Li & Yongheng Du & Yuqin Pan & Fan Zhang & Zhaofeng Meng & Yanan Zhang, 2022. "Experimental Performance Study of Solar-Assisted Enhanced Vapor Injection Air-Source Heat Pump System," Energies, MDPI, vol. 15(20), pages 1-15, October.
    5. Zhang, Shaoliang & Liu, Shuli & Shen, Yongliang & Shukla, Ashish & Mazhar, Abdur Rehman & Chen, Tingsen, 2024. "Critical review of solar-assisted air source heat pump in China," Renewable and Sustainable Energy Reviews, Elsevier, vol. 193(C).
    6. Jing, Siqi & Chen, Qi & Yu, Jianlin, 2024. "Analysis of an ejector-assisted flash tank vapor injection heat pump cycle with dual evaporators for dryer application," Energy, Elsevier, vol. 286(C).

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Jing, Siqi & Chen, Qi & Yu, Jianlin, 2024. "Analysis of an ejector-assisted flash tank vapor injection heat pump cycle with dual evaporators for dryer application," Energy, Elsevier, vol. 286(C).
    2. Jeon, Yongseok & Kim, Sunjae & Lee, Sang Hun & Chung, Hyun Joon & Kim, Yongchan, 2020. "Seasonal energy performance characteristics of novel ejector-expansion air conditioners with low-GWP refrigerants," Applied Energy, Elsevier, vol. 278(C).
    3. Yao, Jian & Zheng, Sihang & Chen, Daochuan & Dai, Yanjun & Huang, Mingjun, 2021. "Performance improvement of vapor-injection heat pump system by employing PVT collector/evaporator for residential heating in cold climate region," Energy, Elsevier, vol. 219(C).
    4. Zhang, Yongyu & Gao, Ran & Si, Pengfei & Shi, Lijun & Shang, Yinghui & Wang, Yi & Liu, Boran & Du, Xueqing & Zhao, Kejie & Li, Angui, 2023. "Study on performances of heat-oxygen coupling device for high-altitude environments," Energy, Elsevier, vol. 272(C).
    5. Wei, Wenzhe & Ni, Long & Li, Shuyi & Wang, Wei & Yao, Yang & Xu, Laifu & Yang, Yahua, 2020. "A new frosting map of variable-frequency air source heat pump in severe cold region considering the variation of heating load," Renewable Energy, Elsevier, vol. 161(C), pages 184-199.
    6. Wang, Yubo & Quan, Zhenhua & Zhao, Yaohua & Wang, Lincheng & Liu, Zichu, 2022. "Performance and optimization of a novel solar-air source heat pump building energy supply system with energy storage," Applied Energy, Elsevier, vol. 324(C).
    7. Zhou, Chaohui & Ni, Long & Wang, Jun & Yao, Yang, 2020. "Investigation on the performance of ASHP heating system using frequency-conversion technique based on a temperature and hydraulic-balance control strategy," Renewable Energy, Elsevier, vol. 147(P1), pages 141-154.
    8. Cao, Jingyu & Zheng, Ling & Peng, Jinqing & Wang, Wenjie & Leung, Michael K.H. & Zheng, Zhanying & Hu, Mingke & Wang, Qiliang & Cai, Jingyong & Pei, Gang & Ji, Jie, 2023. "Advances in coupled use of renewable energy sources for performance enhancement of vapour compression heat pump: A systematic review of applications to buildings," Applied Energy, Elsevier, vol. 332(C).
    9. Konrad, Mary Elizabeth & MacDonald, Brendan D., 2023. "Cold climate air source heat pumps: Industry progress and thermodynamic analysis of market-available residential units," Renewable and Sustainable Energy Reviews, Elsevier, vol. 188(C).
    10. Sheng, Wei & Liu, Pengpeng & Dang, Chaobin & Liu, Guixin, 2017. "Review of restraint frost method on cold surface," Renewable and Sustainable Energy Reviews, Elsevier, vol. 79(C), pages 806-813.
    11. Song, Zhiying & Ji, Jie & Cai, Jingyong & Zhao, Bin & Li, Zhaomeng, 2021. "Investigation on a direct-expansion solar-assisted heat pump with a novel hybrid compound parabolic concentrator/photovoltaic/fin evaporator," Applied Energy, Elsevier, vol. 299(C).
    12. Fu, Yijun & Xu, Wei & Wang, Zhichao & Zhang, Shicong & Chen, Xi & Zhang, Xinyu, 2023. "Experimental study on thermoelectric effect pattern analysis and novel thermoelectric coupling model of BIPV facade system," Renewable Energy, Elsevier, vol. 217(C).
    13. Giuseppe Piras & Francesco Muzi, 2024. "Energy Transition: Semi-Automatic BIM Tool Approach for Elevating Sustainability in the Maputo Natural History Museum," Energies, MDPI, vol. 17(4), pages 1-22, February.
    14. Shuxue, Xu & Yueyue, Wang & Jianhui, Niu & Guoyuan, Ma, 2020. "‘Coal-to-electricity’ project is ongoing in north China," Energy, Elsevier, vol. 191(C).
    15. Zhou, Chaohui & Ni, Long & Li, Jun & Lin, Zeri & Wang, Jun & Fu, Xuhui & Yao, Yang, 2019. "Air-source heat pump heating system with a new temperature and hydraulic-balance control strategy: A field experiment in a teaching building," Renewable Energy, Elsevier, vol. 141(C), pages 148-161.
    16. Muhsin Kılıç, 2022. "Evaluation of Combined Thermal–Mechanical Compression Systems: A Review for Energy Efficient Sustainable Cooling," Sustainability, MDPI, vol. 14(21), pages 1-38, October.
    17. Shi, Peng & Wang, Lin-Shu & Schwartz, Paul & Hofbauer, Peter, 2020. "State-wide comparative analysis of the cost saving potential of Vuilleumier heat pumps in residential houses," Applied Energy, Elsevier, vol. 277(C).
    18. He, Yueer & Liu, Meng & Kvan, Thomas & Yan, Lu, 2019. "A quantity-quality-based optimization method for indoor thermal environment design," Energy, Elsevier, vol. 170(C), pages 1261-1278.
    19. Cheng, Jia-Hao & Cao, Xiang & Shao, Liang-Liang & Zhang, Chun-Lu, 2023. "Performance evaluation of a novel heat pump system for drying with EVI-compressor driven precooling and reheating," Energy, Elsevier, vol. 278(PB).
    20. Wang, Yubo & Quan, Zhenhua & Zhao, Yaohua & Wang, Lincheng & Bai, Ze & Shi, Junzhang, 2024. "Energy and exergy analysis of a novel dual-source heat pump system with integrated phase change energy storage," Renewable Energy, Elsevier, vol. 222(C).

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:energy:v:221:y:2021:i:c:s0360544221000451. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/energy .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.