Avaliação energética de um sistema de refrigeração por absorção utilizando gás de aterro e gás natural

The current technological development made by the absorption refrigeration system is an economic and ambient alternative in comparison to the vapor cycle, possessing an advantage that uses thermal energy that is less noble. Chillers of absorption are used widely in the air conditioned industries, because they can be set in motion through hot water vapors that burn natural gas, solar energy, biomasses amongst others instead of electricity. These systems allow it to reduce the tips of electric demand and balance the rocking of energy demand. This work has had a main objective to simulate a absorption refrigeration cycle with lithium-water bromide solution using biogas of sanitary landfill, and mixtures of this with natural gas. These results shown to the energy viability of the system burning biogas and its mixtures with natural gas in the generator, when compared with equipments that uses traditional fuels (natural gas, oil diesel, amongst others), for operation the commercial chillers with 15 kW of the refrigeration capacity and temperature of the water in the entrance of 14°C and the exit of 7°C.

Keywords

Absorption refrigeration, Lithium bromide-water system, Natural gas, Sanitary landfill gas, Absorption refrigeration system, Bromide solutions, Electric demand, Energy demands, Energy evaluation, Hot water, Lithium bromide, Refrigeration capacity, Sanitary landfill, Technological development, Traditional fuels, Vapor cycles, Water system, Biogas, Bromine compounds, Capillary tubes, Cooling systems, Energy management, Gas absorption, Land fill, Lithium, Refrigerating machinery, Refrigeration, Refrigerators, Sanitation, Solar energy, Technological forecasting, Ternary systems, Vapors, Waste disposal, Water, Water absorption, Waterworks, Gas fuel purification