Abstract
Models for five components of an active solar heating system are described. The integrated model was implemented to Pirmasens Passive House (Rhineland Palatinate, Germany). Two series schemes of interconnection for the domestic hot preparation system and the space heating system, respectively, are analyzed. Rather similar results were obtained in both cases. The active solar system starts operation when the incoming solar irradiance exceeds a threshold value depending on the ambient temperature and the amount of thermal energy stored in the water tank. The combined effect of passive and active solar systems is not able to cover the space heating demand for the entire days of January. Most part of the collected solar energy is used for domestic hot water preparation. The results show that the series interconnection is unfavorable for the space heating system.
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