Potencial de redução do consumo de energia elétrica pela utilização de aquecedores solares no estado de Goiás
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Data
2008-09
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Resumo
A technical viability analysis on reduction of the electric power consumption by the
substitution of electric showers by the adoption of solar heaters and analysis of monthly savings
costs for the municipalities of State of Goiás (Brazil) were performed. Using processing of local
weather data, aided by the geographical information applicative SPRING, irradiancy values
(MJ m-2 year-1) and the number of annual hours of solar shine on earth surface and on the top of the
atmosphere, were calculated. Based on census data, the average monthly electric power
consumption per household (kWh month-1) and the total one per year (kWh year-1), and the
reduction on the monthly cost per household were estimated. Analyzed is also the reduction of flow
that passes in turbine (m3 s-1) from the main hydroelectric power plant of State of Goiás and on the
relationship between the total annual power (kW) and that one generated by same plant (kW) were
predicted. At last, economic analysis of the results for the proposed substitution showed an average
monthly diminution of about R$ 36.92 (US$ 17.00) on the energy bill, per household and an
average term of 13 months for the return of the invested capital. One concluded by the technical,
economical and environmental viability for the substitution of electric showers by thermal
heaters/reservoirs systems.
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Electric power, Energia elétrica, Solar energy, Energy efficiency, Energia solar, Eficiência energética
Citação
OLIVEIRA, Luiz F. C. de et al. Potencial de redução do consumo de energia elétrica pela utilização de aquecedores solares no estado de Goiás. Engenharia Agrícola, Jaboticabal, v. 28, n. 3, p. 406-416, jul./set. 2008.