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The International Symposium on Heating, Ventilation and Air Conditioning

ISHVAC 2019: Proceedings of the 11th International Symposium on Heating, Ventilation and Air Conditioning (ISHVAC 2019) pp 135–143Cite as

A Developed CRMC Design Method and Numerical Modeling for the Ejector Component in the Steam Jet Heat Pumps

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Part of the book series: Environmental Science and Engineering ((ENVENG))

Abstract

Steam jet heat pump is one kind of high energy efficiency heating supplying device. In this system, ejector is an essential component determining the system operating performance. Our work features the advanced ejector design with developed constant rate of momentum change (CRMC) method based on the real properties of working fluid, and the flow friction loss is also considered, which results in a higher thermal compression effect more accurately. With the validated mathematical models, we compare the performances of the designed ejectors using different design methods. The results show a promoted ejector entrainment ratio up to 0.59 with the CRMC method. Furthermore, the variations of the designed entrainment ratio with the change of provided ejector working conditions are analyzed. At last, for the purposed to verify the correct and advantages of the CRMC model, the numerical modeling for operating condition with the specific construction CRMC ejector is also conducted. A more stable and more efficient performance is shown in the modeling results.

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Acknowledgements

This work has been supported by “the Fundamental Research Funds for the Central Universities” (Grant No. HIT. NSRIF. 2017056).

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Authors and Affiliations

  1. Heilongjiang Provincial Key Laboratory of Building Energy Efficiency and Utilization, Harbin, 150090, China

    Yaping Li & Jianli Zhang

  2. School of Architecture, Harbin Institute of Technology, Harbin, 150090, China

    Chenghu Zhang, Yaping Li & Jianli Zhang

  3. Key Laboratory of Cold Region Urban and Rural Human Settlement Environment Science and Technology, Ministry of Industry and Information Technology, Harbin, 150090, China

    Chenghu Zhang

Authors
  1. Chenghu Zhang
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  2. Yaping Li
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  3. Jianli Zhang
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Corresponding author

Correspondence to Yaping Li .

Editor information

Editors and Affiliations

  1. Department of Building Thermal Engineering, School of Architecture, Harbin Institute of Technology, Harbin, Heilongjiang, China

    Zhaojun Wang

  2. Department of Building Science, School of Architecture, Tsinghua University, Beijing, China

    Yingxin Zhu

  3. Department of Building Thermal Engineering, School of Architecture, Harbin Institute of Technology, Harbin, Heilongjiang, China

    Fang Wang

  4. Department of Building Thermal Engineering, School of Architecture, Harbin Institute of Technology, Harbin, Heilongjiang, China

    Peng Wang

  5. Department of Building Thermal Engineering, School of Architecture, Harbin Institute of Technology, Harbin, Heilongjiang, China

    Chao Shen

  6. Department of Building Thermal Engineering, School of Architecture, Harbin Institute of Technology, Harbin, Heilongjiang, China

    Jing Liu

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Zhang, C., Li, Y., Zhang, J. (2020). A Developed CRMC Design Method and Numerical Modeling for the Ejector Component in the Steam Jet Heat Pumps. In: Wang, Z., Zhu, Y., Wang, F., Wang, P., Shen, C., Liu, J. (eds) Proceedings of the 11th International Symposium on Heating, Ventilation and Air Conditioning (ISHVAC 2019). ISHVAC 2019. Environmental Science and Engineering(). Springer, Singapore. https://doi.org/10.1007/978-981-13-9524-6_15

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