Effect of the nozzle exit position on the efficiency of ejector cooling system using R134A

Kamaruzzaman Sopian, B. Elhub, Sohif Mat, A. N. Al-Shamani, A. M. Elbreki, Azher M. Abed, Husam Abdulrasool Hasan, M. M.S. Dezfouli

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Ejectors have been used in refrigeration systems application for ages. Researchers are applying ejectors in refrigeration systems to minimize energy consumptions by harnessing renewable energy. This paper presents CFD model to study and analyse the effect of exit nozzle position (NXP) on the ejector performance. The most important parameters that affect the performance of an ejector are the pressure and temperature, variable pressure and temperature were applied in this study to find the optimum entrainment ratio at different position of NXP. The NXP can be controllable by using a spindle feature which moves NXP forward or backward. Also the mass flow rate that enters the ejector is controlled by another spindle. By using these both features, two parameters can be controlled separately. From the simulation results, it was found that the optimal entrainment ratio Er can be obtained at different position based on the operating conditions. The range of Er was from (0.24-1.12) at constant area ratio and varied operating conditions.

Original languageEnglish
Pages (from-to)5245-5250
Number of pages6
JournalARPN Journal of Engineering and Applied Sciences
Volume12
Issue number18
Publication statusPublished - 1 Sep 2017

Fingerprint

Refrigeration
Cooling systems
Nozzles
Computational fluid dynamics
Energy utilization
Flow rate
Temperature

Keywords

  • CFD
  • Cooling system
  • Ejector
  • Entrainment ratio
  • Turbulence models
  • Variable nozzle

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Sopian, K., Elhub, B., Mat, S., Al-Shamani, A. N., Elbreki, A. M., Abed, A. M., ... Dezfouli, M. M. S. (2017). Effect of the nozzle exit position on the efficiency of ejector cooling system using R134A. ARPN Journal of Engineering and Applied Sciences, 12(18), 5245-5250.

Effect of the nozzle exit position on the efficiency of ejector cooling system using R134A. / Sopian, Kamaruzzaman; Elhub, B.; Mat, Sohif; Al-Shamani, A. N.; Elbreki, A. M.; Abed, Azher M.; Hasan, Husam Abdulrasool; Dezfouli, M. M.S.

In: ARPN Journal of Engineering and Applied Sciences, Vol. 12, No. 18, 01.09.2017, p. 5245-5250.

Research output: Contribution to journalArticle

Sopian, K, Elhub, B, Mat, S, Al-Shamani, AN, Elbreki, AM, Abed, AM, Hasan, HA & Dezfouli, MMS 2017, 'Effect of the nozzle exit position on the efficiency of ejector cooling system using R134A', ARPN Journal of Engineering and Applied Sciences, vol. 12, no. 18, pp. 5245-5250.
Sopian, Kamaruzzaman ; Elhub, B. ; Mat, Sohif ; Al-Shamani, A. N. ; Elbreki, A. M. ; Abed, Azher M. ; Hasan, Husam Abdulrasool ; Dezfouli, M. M.S. / Effect of the nozzle exit position on the efficiency of ejector cooling system using R134A. In: ARPN Journal of Engineering and Applied Sciences. 2017 ; Vol. 12, No. 18. pp. 5245-5250.
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