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ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
CONCENTRATED SOLAR ENERGY AS AN ALTERNATIVE TO REDUCE THE NATURAL GAS CONSUMPTION IN INDUSTRY
Submission Author:
Eduardo Burin , PR
Co-Authors:
Eduardo Burin, Leandro Rogel Silva, Edson Bazzo
Presenter: Eduardo Burin
doi://10.26678/ABCM.ENCIT2020.CIT20-0239
Abstract
This work aimed to evaluate the feasibility of hybrid steam generation in the industry, combining parabolic trough concentrators and a natural gas boiler. Simulations were carried out for the Brazilian cities of Campo Grande, São Paulo, Belo Horizonte, Curitiba, Florianopolis, Recife and Fortaleza, and for Seville (Spain) and Phoenix (USA), covering different levels of Direct Normal Irradiation (DNI) and natural gas prices. The hybrid operation provided a reduction in natural gas consumption, from 5.7% (Curitiba), to 12.6% (Phoenix). In general, the results indicated the potential of parabolic trough for steam generation in Brazil, a country that has attractive DNI potential, and a high natural gas cost. In this scenario, for the cities of Campo Grande and Belo Horizonte (with DNI around 1800 kWh/m²-year), the hybrid system provided a steam cost similar to the base case. In the cities of Seville and Phoenix, on the other hand, despite having higher levels of DNI, the reduced cost of natural gas was not sufficient to make the hybrid conception feasible. In conclusion, solar energy is an interesting alternative to enable the clean generation of process steam, especially if we consider the prospect of costs reduction for the concentrated solar energy technology.
Keywords
Hybrid System, natural gas, Solar Industrial Process Heat
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