Session: K6-06: HEAT TRANSFER IN ENERGY SYSTEM - COMPONENTS I

Paper Number: 122433

122433 - Gas Species Separation of the Vortex Tube With Six Nozzle-Driven Vortex 

Abstract: 

Emissions of greenhouse gases are rising due to resource depletion caused by fossil fuel usage. While these novel and renewable technologies are being investigated, Carbon capture and storage (CCS) technology is being created to lower carbon dioxide. CCS technology allows for capturing, transporting, and storing greenhouse gases produced by burning fossil fuels. Vortex tubes are a contender for CO₂ separation via cryogenics with flow vortex. This study is designed to investigate the basic features of vortex tubes for gas separation by flow characteristics.

The key factors considered were the CO₂ mass fraction and mixed gas pressure. Using a six-nozzle generator, these metrics verified the temperature and CO₂ separation in the vortex tube. When the pressure of the mixture gas was at 3 bar at the horizontal arrangement for the six-nozzle generator, the temperature separation also increased simultaneously. With a cold flow ratio at 3 pressure, the temperature and CO₂ concentration peaked. Additionally, when the system was running at 3 bar, there was a peak CO₂ separation at the cold outlet. As a result, the separation of various pressures was evaluated at 20% of the CO₂ mass fraction. For the six-nozzle generator with a 3-bar inlet pressure, the CO₂ separation performed best at the cold outlet at a cold mass flow ratio of 0.3.

Keywords: Vortex tube, CO₂ gas separation, Thermal Separation, Nozzle generator.

Presenting Author: Ngoc Van Trinh Chungnam National University

Presenting Author Biography: Ph.d candidate at chungnam national university

Authors:

Ngoc Van Trinh Chungnam National University
Quan Thien Phan Nghiem Chungnam national university
Younghyeon Kim Chungnam National University
Wansung Pae Chungnam National University
Sangseok Yu Chungnam National University