چكيده به لاتين
Following transportation, the poultry industry accounts for the second-largest share of energy consumption in Iran. With over 25,000 poultry breeding units operating across the country, the total energy required for heating these facilities is estimated to be equivalent to 2 billion liters of liquid fuel per day. This research focuses on the modeling and optimization of the simultaneous production of electricity, heat, cooling, and potable water for a poultry breeding unit by utilizing gas produced from the gasification of poultry litter. This approach aims to mitigate pollution and reduce fuel consumption. Synthetic gas, was generated from poultry waste through the gasification process, leveraging its unique physical and chemical properties. Notably, prior research has not addressed the simultaneous production, modeling, and optimization of equipment capacity tailored to mountainous environmental conditions for an industrial poultry farm. This study investigates a comprehensive production system that includes a downstream gasifier for synthetic fuel gas production, a gas engine as the primary mover with a gas-fired boiler, an absorption chiller for cooling, and a reverse osmosis system for generating the sanitary water required by the facility. Additionally, the energy, exergy economic, and environmental analyses of the proposed system were conducted. Following a multi-objective optimization process aiming to minimize annual costs while maximizing exergy efficiency using a genetic algorithm, optimal capacities were determined for the gasifier (1 MW), boiler (901.1 kW), absorption chiller (386.4 kW), reverse osmosis system (0.9 L/s), and gas engine (526 kW). The investment payback period was calculated to be 6 years, with an exergy efficiency of 23.25% and a greenhouse gas emission penalty estimated at $70,771 per year.
