Effects of Shock Wave Phenomenon on Different Convergent Lengths in the Mixing Chamber of the Steam Ejector

Stefan Mardikus

doi:10.24071/ijasst.v3i1.3249

Abstract

The shock wave phenomenon is a phenomenon in a steam ejector that caused when the working fluid has high pressure, and suddenly it turns into low pressure and high speed. The shock wave effect will be investigated to the different convergent length in the mixing chamber to find the highest entrainment ratio as the performance of steam ejector. Operating pressure in the primary flow was in the range 0.68 MPa - 1.39 MPa, and the secondary flow was set 0.38 MPa to 0.65 MPa. The result of this study demonstrated that the highest entrainment ratio occurred in the convergent length of 69 mm.

Highlights

IntroductionThe Steam Ejector is a utilization that is used to recover waste energy from low pressure fluid (secondary pressure) and low thermal energy to high-pressure fluid (primary pressure) without the use of the moving part and electrical energyVolume 3, Issue 1, pages 93–100 p-ISSN 2655-8564, e-ISSN 2685-9432 resources [1]
The Steam Ejector is a utilization that is used to recover waste energy from low pressure fluid and low thermal energy to high-pressure fluid without the use of the moving part and electrical energyVolume 3, Issue 1, pages 93–100 p-ISSN 2655-8564, e-ISSN 2685-9432 resources [1]
The steam ejector can be used to mixing fluid in the chemical industry when the fluid has different physical properties through operating condition by pressure or temperatures of fluid

Summary

Introduction

The Steam Ejector is a utilization that is used to recover waste energy from low pressure fluid (secondary pressure) and low thermal energy to high-pressure fluid (primary pressure) without the use of the moving part and electrical energyVolume 3, Issue 1, pages 93–100 p-ISSN 2655-8564, e-ISSN 2685-9432 resources [1]. The Steam Ejector is a utilization that is used to recover waste energy from low pressure fluid (secondary pressure) and low thermal energy to high-pressure fluid (primary pressure) without the use of the moving part and electrical energy. The steam ejector can be used to mixing fluid in the chemical industry when the fluid has different physical properties through operating condition by pressure or temperatures of fluid. The difficult problem to handle the liquid or gas corrosively in process industries, the ejector can pump this fluid through different pressure when the primary fluid passed part of the nozzle; ; the secondary fluid can be moved to the mixing chamber area [2]. The steam ejector was used to mix the substance with different properties of physics. The steam ejector model geometry consists of the nozzle and mixing chamber area like convergent, throat and divergent is an essential part to enormously improve the steam ejector performance [3]

Methods

Results

Conclusion