Exergoeconomic optimization of an ammonia–water hybrid absorption–compression heat pump for heat supply in a spray-drying facility

摘要: Spray-drying facilities are among the most energy intensive industrial processes. Using a heat pump to recover waste and replace gas combustion has potential attain both economic emissions savings. In case examined drying of ambient air is heated 200 °C yielding load 6.1 MW. The exhaust from process 80 °C. implementation an ammonia–water hybrid absorption–compression partly cover investigated. A thermodynamic analysis applied determine optimal circulation ratios for number ammonia mass fractions loads. An exergoeconomic optimization minimize lifetime cost system. Technological limitations imposed constrain solution commercial components. best possible identified in terms load, fraction ratio. 895 kW with 0.82 ratio 0.43. This results savings present value 146,000 € yearly CO2 reduction 227 ton.