Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
Energy and economic analysis of an hybrid micro-CHP system with fuel cell using natural gas and photovoltaic panels for residential consumers in 10 Brazilian cities
Submission Author:
Florian Alain Yannick Pradelle , RJ
Co-Authors:
Renato Gabriel, Edson Junior, Florian Alain Yannick Pradelle, Sergio Braga, Epifanio M Ticona, Renata Nohra Chaar Pradelle, Eduardo Serra, Cesar Luiz Sobral Vieira
Presenter: Florian Alain Yannick Pradelle
doi://10.26678/ABCM.COBEM2023.COB2023-1022
Abstract
Hybrid systems composed of intermittent renewable sources, storage systems and fuel cells emerge as a possible solution for more efficient and less polluting energy generation, and should be investigated regarding their technical and economic applicability. In this context, the present work proposed a numerical simulation of a hybrid system for generating electricity and heat, connected to the electrical grid, consisting of a micro-CHP (PEMFC + auxiliary components), photovoltaic modules and batteries. The power flow control between the energy sources and the consumer demand was simulated using the MATLAB software (version 2019b). Its installation in the cities of São Paulo (SP), Rio de Janeiro (RJ), Salvador (BA), Fortaleza (CE), Belo Horizonte (MG), Manaus (AM), Curitiba (PR), Recife (PE), Porto Alegre (RS) and Campo Grande (MS) were investigated. Subsequently, cash flow analysis methods are introduced by calculating the net present value and total cumulative cost, under different scenarios of electricity and natural gas tariffs and with or without cogeneration. The system showed higher economic performance in the cities of Manaus due to high electricity tariff and São Paulo, as a result of low natural gas tariff. The results showed in the best case, a payback lower than 7 years. It was observed that, with the expected reduction in the equipment cost over the next 20 years, a decrease of more than 50% in the total cumulative cost could be achieved in 2043. In these projections, the greatest differences were observed in São Paulo (80%) where the OPEX of the system (electricity + natural gas) is the cheapest, while Porto Alegre presented the lowest reduction (51%).
Keywords
Proton Exchange Membrane Fuel Cell (PEMFC), Hydrogen, Battery storage, Payback, Net Present Value (NPV)
