Modeling and Simulation of a Solar Thermal System for Domestic Space Heating Using Radiators Low Temperature

Abstract

This article presents the study of the thermal behavior of a solar heating system at low temperature for an old individual home built in the 1990s. In which, on one hand, a traditional fluid heating boiler is replaced by a storage tank heated by a set of solar panels and on the other hand, the existing conventional radiators (75° C/65 °C) are replaced by radiators at low temperature (50° C/45 °C). The numerical model is used to evaluate temperature changes of each part of the system (collection, storage, distribution and indoor air of the room).Comparing these results with those obtained by a home heated by radiators at high temperature associated with a traditional boiler.

The simulation entry parameters include the climatic conditions concerning the area of Adrar (27.10 N, 0.17 W, altitude279 m) in southAlgeriafor four successive days in January where the average minimum and maximum temperatures are respectively about 4 ° C and19 °C. The results show that the integration of solar heating using low temperature radiators in an old individual home provides adequate comfort conditions while minimizing the energy consumption of 20%. Furthermore, this heating technique helps to decrease each year 20% of carbon emissions and reduce energy costs.