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Language: English

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received April 14, 2009
Accepted July 27, 2009

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Optimal operation of the integrated district heating system with multiple regional branches

Ui Sik Kim Tae Chang Park Lae-Hyun Kim¹ Yeong Koo Yeo^†

Department of Chemical Engineering, Hanyang University, Seoul 133-791, Korea ¹Department of Chemical Engineering, Seoul National University of Technology, Seoul 135-743, Korea

Korean Journal of Chemical Engineering, January 2010, 27(1), 6-18(13), 10.1007/s11814-009-0348-7

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Abstract

This paper presents an optimal management model for structural and operational optimization of an integrated district heating system (DHS) with multiple regional branches. A DHS consists of energy suppliers and consumers, district heating pipelines and heat storage facilities in a region. The integrated DHS considered in this paper consists of 11 regional DHS branches. In the optimal management system, production and consumption of heat, transport and storage of heat at each regional DHS are taken into account. The optimal management system is formulated as a mixed integer linear programming (MILP), where the objective is to minimize the overall cost or to maximize the profits of the integrated DHS by generating electricity while satisfying the operation constraints of heat units and networks, as well as fulfilling heating demands from consumers. Evaluation of the operation cost is based on daily operations for two months (during August and December) at each DHS located in Seoul and Gyeonggi-do in Korea. Results of numerical simulations show the increase of energy efficiency due to the introduction of the present optimal_x000D_ operation system.

Keywords

Optimization District Heating System MILP Unit Commitment Integrated District Heating System

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