Work

Modeling and control of heating and heat circulation in direct air capture system

Year: 2024

Type: article

Abstract: Direct air capture (DAC) is a critical technology for mitigating climate change. However, the high heat consumption of temperature vacuum swing adsorption (TVSA)-based DAC processes hinders its widespread deployment. This study focuses on developing a control strategy to optimize the energy efficiency of the TVSA heating phase. A novel adsorbent temperature estimation method, validated through experimental data, was integrated into a cascaded PI controller with a fuzzy gain scheduler (FGS). Experimental results demonstrate that the proposed control strategy effectively regulates the heating process, achieving a potential energy saving of up to 14%. This work contributes to enhancing the feasibility and sustainability of DAC technologies. • More responsive heating dynamics with PI-Controller fuzzy gain scheduling. • Precise and stable adsorbent temperature estimation with virtual sensor. • Energy savings with additional process phase in direct air capture system. • Process improvement for the TVSA direct air capture process.

Source: Chemical Engineering Science

DOI: 10.1016/j.ces.2024.120745

Authors: Antti Paajanen, Niko Nevaranta, Cyril Bajamundi

Institutions: Lappeenranta-Lahti University of Technology, VTT Technical Research Centre of Finland

Language: English

Topic: Carbon Dioxide Capture Technologies

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Affordable and clean energy, Climate action, Industry, innovation and infrastructure

Open Access status: hybrid

Estimated APC paid: $3,930