文档介绍：COST OPTIMIZATION OF LOW-COST SOLAR DOMESTIC HOT WATER SYSTEMS ASSISTED BY
ELECTRIC ENERGY
Sergio Colle, Juan Pablo L. C. Salazar, Samuel L. Abreu, and Karime Glitz
Solar Energy Laboratory (LABSOLAR) - Department of Mechanical Engineering, Federal University of Santa
Catarina, . Box 476, Florianópolis, 88010-970, SC, Brazil,
Phone +55-48-331-9379, Fax +55-48-331-7615, ******@
Wilson Reguse
Departamento de Desenvolvimento dos Sistemas de Distribuição, Centrais Elétricas de Santa Catarina S/A, Rodovia SC
404 km 3 Bairro Itacorubi, Florianópolis, 88034-900, SC, Brazil,
+55-48-231-5590, ******@.br
Abstract – In the present paper the optimization of the insulation thickness of the storage tank of a low
cost solar domestic water heating system (SDWHS) is carried out. The system is equipped with an
auxiliary heater in the tank. The model assumes that the auxiliary energy needed to face the energy
requirement for a shower in the evening, is supplied to the storage tank in the early hours of the morning.
The modelling is intended to reproduce the current situation in Brazil, of low-e users who work
during the day and usually take showers after 6:00 PM. As a result of the widespread use of electric
showers between 6:00 PM and 8:00 PM the electricity peak demand is usually extremely high, for major
cities in southern