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|Title:||Intercompany energy integration: adaptation of thermal pinch analysis and allocation of savings|
|Citation:||Journal of Industrial Ecology, 2012; 16(5):689-698|
|Michael Hiete, Jens Ludwig, and Frank Schultmann|
|Abstract:||Reusing heat through process integration in heat exchanger networks has long been a key measure for increasing energy efficiency in energy-intensive industries. Thermal pinch analysis is commonly used for a systematic matching of process streams and thus planning of optimal process integration in large chemical plants. The possible savings increase with the amount of heat and the number of integrated process streams. Therefore co- siting of several companies in a symbiotic network opens new opportunities for process integration even in small and medium-size enterprises (SMEs), but also introduces new challenges. Thermal pinch analysis is extended here to account for piping distances and fluctuations and limited availability of energy flows by adding additional costs for the piping system and a backup utility system in the optimization function. Cooperative game theory is proposed to derive a sharing of savings between the partners of the industrial symbiosis that is optimal for each partner and should prevent partners from leaving the network because of higher benefits in a subgroup or alone. It is argued that knowledge about the optimality of a network for each partner creates trust between the partners that is a necessary base for the long-term commitment needed in industrial symbioses. An exemplary symbiotic network combining the production of pulp and woody biomass energy carriers is used to illustrate the proposed approaches.|
|Keywords:||game theory; heat exchanger network; industrial ecology; industrial ecosystem; industrial symbiosis; process integration|
|Rights:||© 2012 by Yale University|
|Appears in Collections:||Entrepreneurship, Commercialisation, and Innovation Centre publications|
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