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Energy efficiency evaluation of a solar domestic hot-water system: a case study

Siuta-Olcha A.

Environment Protection Engineering

2010

Vol. 36, nr 4

23-35

This paper presents the results of a simulation study of a solar domestic water heating system using the Exodus method. The simulations have been performed with three days of real weather data. Investigations of thermal conditions in the flat-plate solar collector-water-storage tank system enabled to carry out a detailed evaluation of energy efficiency of the solar installation. The influence of the flow rate of the medium in the collector cycle, of initial water temperature in the tank and of the solar irradiation for a day on the quantity of energy accumulated in this system was analyzed. The efficiency of energy accumulation in the tank at the stage of its loading and during hot-water consumption was determined.