Global Energy Integration for Industrial Parks Incorporating Centralized Trigeneration and Interplant HEN

Abstract

To address the issue of multiple forms of energy (heat, cooling, and electricity) production, distribution, and recovery, this study proposes a global energy integration method for industrial parks. The proposed method involves the construction of a centralized trigeneration system within the park, including the components of a steam power generation system, solar energy, electric boilers, organic Rankine cycle, absorption refrigeration cycle, and electric compression refrigeration. Additionally, the comprehensive utilization of waste heat from the participating plants and interplant heat exchanger network are also taken into consideration. A mixed-integer nonlinear planning mathematical model is formulated. The proposed method is demonstrated through a case study that considers both single and multiobjective (economy-environment) scenarios. It is noticed that the quantity of consumed fuel has a considerable influence on both energy distribution and park costs. Specifically, the total annualized cost increases by 44 and 5% for fuel input to 0.5 and 1.5 times the optimal natural gas amount, respectively. Moreover, the introduction of solar energy not only affects the system’s emissions but also has a substantial impact on the energy distribution.