Atmospheric Carbon Capture: A Review on Current Technologies and Analysis of Energy Consumption for Various Direct Air Capture (DAC) Systems

<p>Carbon dioxide (CO₂) capture is a crucial approach to reducing greenhouse gases in the atmosphere to directly combat climate change. Major components of the technology to desublimate CO₂ at cryogenic temperatures are mature and have the potential to be applied to build large Arctic/Antarctic direct-air CO₂ capture plants. Pressure swing adsorption another gas separation technique used in industry today that can be modified for atmospheric carbon capture. The discussion of energy consumption for cryogenic and combined direct air capture systems is explored in this study. The investigation of precompression of atmospheric air for a direct-air capture CO₂ system using an attached “waste-cool” precooler is examined. In this novel approach, a thermodynamic model based on psychrometric theories is evaluated to determine the required work input of the system at various inlet compression ratios and various inlet temperatures. Turbine recovery is also considered for the potential to capture “waste energy.” A pressure swing adsorption unit is evaluated as another modification to the cryogenic system to minimize energy consumption.<br /><br /></p>

Name thesis:degree_name

Master of Science in Mechanical Engineering

Level thesis:degree_level

Thesis - Open Access

Discipline thesis:degree_discipline

Mechanical Engineering

Year

2023

Author dc:creator

• Perskin, Jennifer

• Carbon dioxide
• greenhouse gases
• atmosphere
• climate change
• temperatures
• Energy Systems
• Heat Transfer, Combustion

Repository record dc:identifier

https://commons.erau.edu/edt/728

OAI identifier oai:identifier

oai:commons.erau.edu:edt-1751