INTEGRATION OF RENEWABLE ENERGY SOURCES IN A POLYGENERATION PLANT WITH LNG COLD RECOVERY

Abstract

The low temperature of Liquefied Natural Gas (LNG) makes it a valuable exergetic source. However, cold from LNG-regasification is rarely recovered. On the other hand, the integration of renewable energy sources in LNG cold recovery systems might be a promising option in the transition to a greener energetic model. In this paper, we analyze a polygeneration plant that exploits LNG exergy in cascade to produce simultaneously electric power and refrigeration with the integration of solar and biomass energy. The plant produces an equivalent electricity saving of 91.4 kWh/t-LNG and avoids an annual emission of 36,078 tons of CO2.