Solar energy storage application in Tunisian greenhouse by means of phase change materials

An experimental comparative study was conducted in two greenhouses installed in the Research and Technologies Centre of Energy (CRTEn) in Tunisia. The greenhouse heat balance of the greenhouse with a heating system has been used to investigate the impact of the phase change material (PCM) on greenhouse temperature. Results shows the nocturnal variation of temperature inside the greenhouse used a heating system exceeds the temperature inside the conventional greenhouse with a difference of 5 °C. The nighttime recovered heat of the solar system attained 31% of the total requirements of heating.