مرکز منطقه ای اطلاع رساني علوم و فناوري - Seasonal Heat Storage of Solar Energy for Heating and The Use of Heat Pump Assisted

Abstract :

In this study, the aim was to provide the heating need of a detached house from the solar energy in Isparta. For this purpose, solar energy is stored as sensible heat on the water-glycol with 12 flat plate solar collectors. When the temperature of stored water is over 50 °C, it is directly used for heating the house. When the water temperature in the tank falls below this value it is considered that the temperature increased by a heat pump. Heating needs in the numerical study is calculated monthly based on the standard TS 825. Daily values were estimated from monthly mean values. Heating energy requirement was calculated as 346.12MJ at 19 January. It was the highest value of the year. Water temperature in the tank ranged from 16.5 to 96.1 °C, minimum storage temperature occurred at 6 March while the highest was 20 August. It was seen that June to August there is no need for heating, September to December the heating need provided directly from the storage tank, January to May the heating need is provided with heat pump. It is calculated that COP of the heat pump was vary between 3.78 and 5.54. It was shown with calculations that stored energy is mostly used for heating directly, partly used with the heat pump.