Análises técnicas e financeiras para implementação de uma usina heliotérmica no estado de pernambuco

Abstract

The use of renewable energy has been growing worldwide every day, due to its lower environmental impact compared to non-renewable sources. Solar thermal energy (CSP) techniques are an option still little used in Brazil, but countries such as Spain and Chile stand out in the generation of electricity through this technology. Among the technical thermal energy technologies, the most used globally is the parabolic cylinder. In this work, a simulation was carried out, using the SAM program of this type of plant in the state of Pernambuco, in three locations: Afogados , Petrolina and Goiana, considering the impact of three characteristics of the plant: solar multiple, storage time and spacing between rows. For comparison, the LCOE, capacity factor and annual energy production were used. The results indicated that for spacings greater than 21 m there was no influence on the three indicators. The minimum LCOE was obtained for times between 4 h and 6 h of storage and the maximum capacity factors were between 7 h and 9 h. The minimum LCOE was added for the solar multiple of 2 for all cases. Afogados presented the best results and Goiana the worst for all indicators. When we combined the variation of the solar multiple and the storage time, the LCOE was found only for two hybrids: solar multiple 2 and 6 h of storage and, solar multiple 3 and 10 h of storage for Afogados.