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Optimisation of merged district - heating systems - Benefits of co - operaion in the light of externality costs
Linköping University, The Institute of Technology. Linköping University, Department of Management and Engineering, Energy Systems.
2002 (English)In: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 73, no 3-4, p. 223-235Article in journal (Refereed) Published
Abstract [en]

Studies have shown that separate actors can benefit from co-operation around heat supply. Such co-operation, for example, might be between an industry selling waste heat to a districtheating system or two district-heating systems interconnecting their respective systems. Cooperation could also be expected to reduce the environmental impacts of the energy systems by choosing the plants with the lowest emissions. It is widely accepted that the production of heat and electricity causes damage to the environment. This damage often imposes a cost on society, but not on company responsible. In general, using a broader system perspective when analysing local energy systems results in a lower total cost, more e.cient use of plants and a greater potential for producing electricity in combined heat-and-power (CHP) plants. Internalising the externality costs in the energy system model facilitates the study of what cooperation can mean for reducing emissions. This study shows that co-operation between the two systems is on the whole cost-effective, but the benefits are greater when external costs are not included in the calculation. Considering externality costs in combination with current electricity prices would lead to a higher system cost, but the quantity of emission gases will be lower. If, on the other hand, the calculation is made taking externality costs and corresponding adjusted electricity prices (the adjustment being necessary to compensate for the additional cost due to externality costs) into consideration, the quantities of emission gases will rise because more heat-and-power will be generated by one of the CHP plants. © 2002 Elsevier Science Ltd. All rights reserved.

Place, publisher, year, edition, pages
2002. Vol. 73, no 3-4, p. 223-235
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-46865DOI: 10.1016/S0306-2619(02)00116-2OAI: oai:DiVA.org:liu-46865DiVA, id: diva2:267761
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2021-09-10
In thesis
1. Regional and Industrial Co-operation in District Heating Systems
Open this publication in new window or tab >>Regional and Industrial Co-operation in District Heating Systems
2003 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

A century after the introduction of the first district heating system (DHS) on a commercial basis, the technology has still not become as widespread as it deserves to be. The role of district heating (DH) has meant not only comfort for its users but also less impact on the environment. At a time when the negative impact on climate of using energy and the liberalisation of energy markets are prominent issues, efficient DHS which are competitive both at national and international levels are needed. DH could be introduced at additional locations and existing networks could expand in areas with detached houses and industries. Combined heat and power (CHP) production promotes the integration of the Swedish DH sector with the rest of Europe.

A step that enhances the benefit of DH is co-operation in DH systems at local and regional levels. The established DHS in many Swedish municipalities make this step easier to implement. Industries and DH utilities may collaborate around heat supply by looking beyond their traditional boundaries, thereby promoting an efficient use of energy.

This study enlightens the importance of co-operation in DH systems using several real-world cases. The impact of the introduction of external cost, the deregulated power market, investments and various policy instruments on the energy systems is considered. Some of the cases indicate clear advantages even under current conditions whilst others are dependent on the future boundary conditions assumed. In most cases CHP production is encouraged as a result of interconnection of DH and industrial energy systems. The results of this study may serve to encourage decision makers to think in terms of co-operation.

The modelling of the regional and industrial energy system was carried out using an improved version of the MODEST energy system optimisation tool. The improvement of the modelling environment of the tool has substantially facilitated the system analysis work.

It should be mentioned that though co-operation could lead to lower costs and more efficient use of energy, other factors such as the relationships between the actors, may hinder a collaboration project. Independent techno-econornical analyses like these may help create a forum for discussion for the parties involved where other aspects of co-operation could be discussed.

Place, publisher, year, edition, pages
Linköping: Linköping University, 2003. p. 78
Series
Linköping Studies in Science and Technology. Dissertations, ISSN 0345-7524 ; 849
National Category
Energy Systems
Identifiers
urn:nbn:se:liu:diva-179107 (URN)9173737712 (ISBN)
Public defence
2003-11-28, sal C3, hus C, Linköpings universitet, Linköping, 10:15
Opponent
Available from: 2021-09-27 Created: 2021-09-10 Last updated: 2023-03-01Bibliographically approved

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Gebremedhin, Alemayehu

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