Abstract
The purpose of this research is to determine the energy efficiency and the feasibility of using biogas from human waste and animal waste in the cogeneration plants to produce heat and electricity. The paper deals with the identification, investigation and assessment of energy flows which were present while working of biogas plants based on gas-piston internal combustion engine. These plants use biogas from cattle excrements and solid waste landfill. The calculation of the energy balance of each of the two systems is done and is developed and defined useful energy production. The work revealed that the biogas of animal waste - is 5 lower than solid household waste, but his energy potential is on 12% higher. When using a system that works with animal waste there are additional costs of thermal energy to maintain proper temperatures inside the digesters , which constitute 43% of the total potential of energy in the winter and 74% in the summer. But in general, the energy efficiency of each of the systems is feasible to implement and use in Ukraine and is 85 % for human waste and 50 - 65 % for animal waste.
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