The design of biogas plant with solar energy, heat controlling and phase change material

Recently, three are many studies about renevable energy sources. Solar energy is the most important renewable energy sources. Bioenergy is commonly recognized as an important renewable energy. The utility of solar energy in biogas production is an important phenomeno. In this study, biogas reaktör which was aided solar energy was improved. Reaktör was projected like three cylindirical jacket inner to inner and the outer surface was insulated with glass-wool the inner cylindirical jacket in which was put the organic materials for obtain the biogas is conditional room. The middle cylindirical jacket is the area which pass the hot water. Hot water is obtained from a solar collector which has an area of 4 m2 and closed loop works with forced convection. When the solar radiation isn't effective, the required heat for supplying the fermantation tempareture maintained at 32 °C was obtained from the outer cylindirical jacket where the heat was stored by phase change material. As a phase change material CaCb was prefered because of the high specific heat. To obtain 32 °C in the conditional room, a control unit which is PID was used for requtate the hot water's volumetric flow rate. As a result of the experiments, biogas production time has been watch over to become shorter by suitable fermantation temperature and phase change material.Keywords: Biogas, phase change material, solar energy