<p>This study presents and evaluates a polygeneration system that utilizes exhaust gas waste heat from a 2&#xa0;MW natural gas internal combustion engine. The engine simulation was performed using Ebsilon® Professional, with results transferred to Aspen HYSYS® for the entire polygeneration system modeling. The performance was evaluated under three cases, including environmental conditions, i.e., hot and cold climate. For the evaluation, energetic, exergetic, and exergoeconomic analyses were applied. The results indicated that the energetic efficiency of the overall system is around 45% across all cases. The exergetic efficiencies of the polygeneration system in the hot and cold climates were calculated as 31% and 47%, respectively (without considering the engine). It was also found that the average cost of system products was nearly 40% lower in the cold climate than it was in the hot climate, demonstrating the higher cost-effectiveness of the evaluated polygeneration system in colder climates.</p>

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Performance analysis and cost evaluation of a 2 MW natural gas internal combustion engine integrated into a polygeneration system

  • Jing Luo,
  • Bourhan Tashtoush,
  • Tatiana Morosuk

摘要

This study presents and evaluates a polygeneration system that utilizes exhaust gas waste heat from a 2 MW natural gas internal combustion engine. The engine simulation was performed using Ebsilon® Professional, with results transferred to Aspen HYSYS® for the entire polygeneration system modeling. The performance was evaluated under three cases, including environmental conditions, i.e., hot and cold climate. For the evaluation, energetic, exergetic, and exergoeconomic analyses were applied. The results indicated that the energetic efficiency of the overall system is around 45% across all cases. The exergetic efficiencies of the polygeneration system in the hot and cold climates were calculated as 31% and 47%, respectively (without considering the engine). It was also found that the average cost of system products was nearly 40% lower in the cold climate than it was in the hot climate, demonstrating the higher cost-effectiveness of the evaluated polygeneration system in colder climates.