economia de energia e redução do pico da curva de demanda para ...

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Abstract
The main objective of the present work is to establish a methodology capable of
assessing, through the use of a compact thermosyphon solar hot water heating system, the
energy saving and electric energy peak reduction potential during the peak hours for a group
of low-income residential consumers. In order to quantify these potentials, a total of 90 lowincome
consumers were chosen to have their electric energy consumption monitored.
Analysis of the collected data rendered relevant information for energy conservation policies,
such as the hourly distribution of hot water consumption, the fraction of the electric energy
consumption used for water heating, the average contribution of electric showerheads to the
peak demand, and the estimated solar fraction for the group of consumers. The validation of
the TRNSYS (Transient System Simulation Program) computational code for a thermosyphon
solar water heating system is undertaken. The multi-objective economic optimization of
constructive parameters, with use of an average hot water consumption profile obtained from
measured data, is also presented. In a case study, the result of the adopted methodology is the
extra tariff value for energy consumption during peak hours in a differentiated tariff scenario.
The results presented in this work are relevant to determine the viability of government
policies towards promotion of the large-scale use of solar hot water heating systems in low –
income housing units.