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Numerical investigation of the effects of dry gas model and wet steam model in solar-driven refrigeration ejector system

  • Honglun Cong and Jiao Zhang EMAIL logo
Published/Copyright: October 16, 2023
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Chemical Product and Process Modeling
From the journal Chemical Product and Process Modeling Volume 19 Issue 1

Abstract

Nowadays, the use of equipment with little pollution is essential due to the increase in the planet’s temperature. Ejectors are considered one of the equipment with no pollution, and their failure rate is low due to the lack of moving parts. Also, scholars have recently focused on improving the efficiency of industrial equipment. The use of accurate modeling is required to improve steam ejector performance. In a steam ejector, non-equilibrium condensation creates a two-phase flow situation. The wet steam model, used in this study, characterizes this two-phase flow. The study’s objective was to compare this wet steam model with the dry gas model. In the wet steam model, the liquid mass fraction is 0.25, and its calculated entrainment ratio is lower than the dry gas model, closely matching experimental observations. The dry gas model reaches a maximum Mach number of about 5, while the wet steam model approximates 4. A significant temperature difference exists between the two models, with the dry gas model indicating lower temperatures compared to the wet steam model. Diagonal shocks and expansion waves are evident in the mixing chamber, fixed cross-section, and diffuser. These phenomena occur with greater intensity and a slight delay in the wet steam model compared to the dry gas model.

Keywords: solar-driven refrigeration system; steam ejector performance; entrainment ratio; dry gas model; wet steam model
Corresponding author: Jiao Zhang, Working in YiWu JiangNa New Material co., Ltd, Hami Xinjiang, 839303, China, E-mail:

  1. Research ethics: Not applicable.

  2. Author contributions: The authors have accepted responsibility for the entire content of this manuscript and approved its submission.

  3. Competing interests: The authors state no conflict of interest.

  4. Research funding: None declared.

  5. Data availability: Not applicable.

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Received: 2023-04-29
Accepted: 2023-09-15
Published Online: 2023-10-16

© 2023 Walter de Gruyter GmbH, Berlin/Boston

Articles in the same Issue

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  2. Research Articles
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  4. Energy, exergy, and economic analyses and optimization of a deethanizer tower of a petrochemical plant
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https://doi.org/10.1515/cppm-2023-0042
Keywords for this article
solar-driven refrigeration system; steam ejector performance; entrainment ratio; dry gas model; wet steam model

Articles in the same Issue

  1. Frontmatter
  2. Research Articles
  3. Removal efficiency of organic chloride from naphtha fraction using micro and nano-γ-Al2O3 sintered adsorbents
  4. Energy, exergy, and economic analyses and optimization of a deethanizer tower of a petrochemical plant
  5. Solar driven desalination system for power and desalination water production by concentrated PVT and MED system
  6. Energy and exergy analysis of primary steam superheating effects on the steam ejector applied in the solar renewable refrigeration cycle in the presence of spontaneous nucleation
  7. Numerical investigation of the effects of dry gas model and wet steam model in solar-driven refrigeration ejector system
  8. Numerical investigation of different biomass feedstock on syngas production using steam gasification and thermodynamic analysis
  9. Numerical and experimental study of the baffle-based split and recombine chamber (B-SARC) micromixers
  10. Direct synthesis based sliding mode controller design for unstable second order with dead-time processes with its application on continuous stirred tank reactor
  11. Classification and authentication of operating conditions in different processes using Partial Least Squares
  12. Enhancing heat exchanger efficiency with novel perforated cone-shaped turbulators and nanofluids: a computational study
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