Eventos Anais de eventos
ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
COST ANALYSIS OF A SOLAR ORGANIC RANKINE CYCLE WITH SCROLL EXPANDER
Submission Author:
Hairton Júnior José da Silveira , MG
Co-Authors:
Hairton Júnior José da Silveira, Cristiana Brasil Maia
Presenter: Hairton Júnior José da Silveira
doi://10.26678/ABCM.ENCIT2020.CIT20-0752
Abstract
This paper aims to analyze the costs and the generation of electrical energy from a solar organic Rankine cycle. The research was made about the variations of organic Rankine cycles proposed for thermal sources applications. The analysis focusing on power levels, efficiency and optimum operating points in order to choose the configuration that enables the higher power production. A numerical simulation held of the cycle in software EES for checking the environmental parameters that influence on the performance. The main points of variation were the maximum temperature inlet of scroll expander, also the evaporation pressure. In the design analysis, the maximum inlet temperature (Tmax) varied within the range 125-150 ºC, while evaporation pressure range between 1000 kPa to 2100 kPa. Considering metallurgical aspects, operational and performance, we selected 150 ºC of maximum inlet temperature and a evaporation pressure of 2100 kPa for design condition, with those values meeting the power production of 5.35 kW. At the end of the analysis, the internal pressures of the scroll expander and the optimum rotation will be evaluated in order to improve the isentropic efficiency. Also, the investment cost and the energy generation costs will be estimated.
Keywords
Solar Organic Rankine Cycle, Scroll Expander, Cost Analysis.
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