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Title: | Potential advantages in heat and power production when biogas is collected from several digesters using dedicated pipelines - A case study in the “Province of West-Flanders” (Belgium) | Authors: | Hengeveld, E. J. Bekkering, J. VAN DAEL, Miet van Gemert, W. J. T. Broekhuis, A. A. |
Issue Date: | 2020 | Publisher: | PERGAMON-ELSEVIER SCIENCE LTD | Source: | Renewable Energy, 149 , p. 549 -564 | Abstract: | In the case study "West-Flanders" costs of electricity and heat production are estimated if a dedicated biogas grid using pipelines would be implemented to centralize energy production in a region. Heat may not be used effectively at digester sites, e.g. because of a change in treatment of digestate. A large scale centralized combined heat and power (CHP) engine can produce additional electrical power at a hub, i.e. central collection point, and has lower specific costs compared to decentralized CHPs at digester sites. A biogas transport model is used to calculate transport costs in a grid. These costs, partly balanced by a scale advantage in CHP costs, are attributed to the additional electrical energy (80%) and heat (20%) produced. If the hub is at a digester site, costs of additional electricity can be as low as 4.0 (sic)ct kWh(e)(-1) and are in many cases below 12 (sic)ct kWh(e)(-1), i.e. in the same order of magnitude or lower than costs of electricity from biogas produced using separate CHPs at the different digester sites; costs of heat at the hub show to be lower than 1 (sic)ct kWh(th)(-1) assuming an effective heat use of 50%. In case a hub is situated at a location with high potential heat demand, i.e. a heat sink, transport of biogas from one digester only to a central located hub can provide 3.4 MWth of heat at 1.95 (sic)ct kWh(th)(-1). For such a centrally located hub additional electrical energy costs show to be slightly higher, but with three or more digesters these costs are lower than 20 (sic)ct kWh(e)(-1) and heat costs are around 0.5 (sic)ct kWh(th)(-1). With a centralized hub more renewable energy is produced, i.e. a more efficient use of biomass feedstock. It is concluded that costs for additional electricity and heat can be at a competing level and scale advantages in a CHP can be a driver to collect biogas at a hub using a biogas grid. | Notes: | Hengeveld, EJ (reprint author), POB 3037, NL-9701 DA Groningen, Netherlands. e.j.hengeveld@pl.hanze.nl; j.bekkering@pl.hanze.nl; miet.vandael@vito.be; w.j.t.van.gemert@pl.hanze.nl; a.a.broekhuis@rug.nl |
Other: | Hengeveld, EJ (reprint author), POB 3037, NL-9701 DA Groningen, Netherlands. e.j.hengeveld@pl.hanze.nl; j.bekkering@pl.hanze.nl; miet.vandael@vito.be; w.j.t.van.gemert@pl.hanze.nl; a.a.broekhuis@rug.nl | Keywords: | Biogas CHP;Scale dependency;Electrical efficiency;Biogas transport;Biogas grid;Centralized processing | Document URI: | http://hdl.handle.net/1942/31185 | ISSN: | 0960-1481 | e-ISSN: | 1879-0682 | DOI: | 10.1016/j.renene.2019.12.009 | ISI #: | WOS:000517856500046 | Rights: | 2019 Elsevier Ltd. All rights reserved. | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2021 |
Appears in Collections: | Research publications |
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