Eventos Anais de eventos
ENCIT 2018
Brazilian Congress of Thermal Sciences and Engineering
EXERGOECONOMIC AND EXERGOENVIRONMENTAL ANALYSIS OF POWER PLANT WITH CO2 CAPTURE AND STORAGE
Submission Author:
Eduardo José Cidade Cavalcanti , RN
Co-Authors:
Eduardo José Cidade Cavalcanti, Matheus Lima, Gabriel Fernandes de Souza
Presenter: Eduardo José Cidade Cavalcanti
doi://10.26678/ABCM.ENCIT2018.CIT18-0111
Abstract
A natural gas combined cycle power plant (NGCC) with CO2 capture and storage system (CCS) were investigated. The exergy, exergoeconomic and exergo-environmental balances were carried out using the specific Exergy Costing (SPECO) approach. The cost and environmental impact of NGCC, CCS, pipeline, storage and inputs were described. Results show that the CCS with sequestration of 90% CO2 reduces CO2 emissions at NGCC by 82%, however, other emissions and environmental impact of Natural gas, reduces the EI rate by 7%. The CCS trade-offs are a reduction of the net power and exergetic efficiency of 10%. Additionally the CCCS increased the specific cost and specific EI per exergy unit of electricity of 23% and 2%, respectively. The natural gas heater has the worth economic and environmenatl performance, due to its high cost and EI rate of exergy destruction on relation to its cost and EI of component. Its efficiency should be increased. Notwithstanding the combustor chamber and the super heater have higher EI. They should be reduce its efficiency or its EI of components at exergoenvironmental point of view.
Keywords
Electricity generation, exergoeconomy, carbon capture and storage, Exergoenvironmental, eco-indicator 99
