Approaches and application of heat and water network integration in chemical process system engineering: A review

Abstract

Water allocation network (WAN) and heat exchange network (HEN) are effective optimization techniques in chemical process system engineering (CPSE). This paper reviews the literature about the optimization of water and heat over the last 20 years. By analyzing the development of CPSE, this review presents a systematic overview on deterministic optimization algorithms and stochastic optimization algorithms. Deterministic optimization algorithms, like the conceptual method and mathematical programming method, could obtain a deterministic feasible solution by analyzing diagrams or solving the water-energy equations. Stochastic optimization algorithms have a strong search ability in solution space. It doesn't need to solve complicated mathematical models, and could avoid local optimum effectively and achieve the global optimal solution quickly. This paper summarizes the recent researches on stochastic optimization algorithms like simulated annealing algorithm (SA), genetic algorithm (GA), particle swarm algorithm (PSO), and so on. Finally, the application and future research gaps in this field are presented.