A Novel Hybrid Method Combining Mixed-integer Linear Programming and Pinch Analysis for Technology Selection

As the world embrace new technology trends such as industrial revolution 5.0 (IR5) and stronger emphasis on sustainability development, some traditional sectors such as agricultural are facing growing challenges to enhance productivity while addressing sustainability concerns. In this work, a novel hybrid decision-making methodology has been developed. The new method combines mixed-integer linear programming (MILP) and pinch analysis to aid the selection of sustainable and cost-effective technologies. The MILP model is useful in optimising multi-criteria decision-making, while the graphical pinch analysis tool of composite curves is useful in visualizing and communicating results effectively. Hence, the integration of these tools offers a systematic and transparent approach to selecting sustainable technologies, enabling decision-makers to navigate complex trade-offs effectively. The methodology was demonstrated through a hypothetical example and an agricultural case study. For the latter, five options of pesticide application technologies for oil palm plantations were evaluated, i.e. grid-powered drones, gasoline-powered drones, solar-powered drones, spray tractors, and knapsack sprayers. Key criteria evaluated included capital expenditure, operational savings, carbon footprint, and pesticide exposure time. The hybrid approach identified gasoline-powered drones as the optimal solution, offering the best balance across criteria, including a capital investment of $64,800, operational savings of $22,032, a carbon footprint of 271 kg CO2/day, and pesticide exposure time of 720 h/year. This study provides a replicable framework for systematic technology selection, supporting the transition toward IR5 by integrating advanced technologies with sustainability goals.