LAPSE:2024.1566
Published Article
LAPSE:2024.1566
Integration of a Chemical Heat Pump with a Post- combustion Carbon Capture Sorption Unit
Rajalakshmi Krishnadoss, Thomas A. Adams II
August 16, 2024. Originally submitted on July 9, 2024
A novel process system which integrates an isopropanol-based chemical heat pump with a post-combustion carbon capture unit was proposed, designed, and analyzed. The system uses low-quality waste heat (~80°C) produced through the CO2 adsorption step of a carbon capture process and upgrades that heat to a higher temperature (~150°C) using the chemical heat pump. The chemical heat pump is powered mostly by the waste heat and requires only a small amount of electricity. The higher temperature heat produced can be used in the desorption stage of the CO2 capture process, displacing a portion of the existing fossil energy required. The energy and exergy performance characteristics of the chemical heat pump were computed using the results of a steady state simulation in a systems analysis. Using exergy cost correlations, the profitability of the chemical heat pump concept was estimated. It was found that for this particular configuration, the fossil energy load of desorption could be reduced by roughly 2.7% with very little parasitic electric load.
Keywords
Chemical heat pump, Energy Efficiency, Exergy Efficiency, Heat integration
Suggested Citation
Krishnadoss R, Adams TA II. Integration of a Chemical Heat Pump with a Post- combustion Carbon Capture Sorption Unit. (2024). LAPSE:2024.1566
Author Affiliations
Krishnadoss R: Norwegian University of Science and Technology, Department of Energy and Process Engineering, Trondheim, Norway
Adams TA II: Norwegian University of Science and Technology, Department of Energy and Process Engineering, Trondheim, Norway
Journal Name
Systems and Control Transactions
Volume
3
First Page
484
Last Page
489
Year
2024
Publication Date
2024-07-10
Version Comments
DOI Assigned
Other Meta
PII: 0484-0489-677093-SCT-3-2024, Publication Type: Journal Article
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LAPSE:2024.1566
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LAPSE:2023.36832
Integration of a Chemical Heat pump...
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https://doi.org/10.69997/sct.128149
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[v2] (DOI Assigned)
Aug 16, 2024
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Jul 9, 2024
 
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