Title:
Servant of Two Masters? Trade-Offs for Agricultural Biogas Plants Between Flexible Power Generation and Heat Cogeneration
Author(s):
Dotzauer, M., Lauer, M., Schneider, J.
Document(s):
Paper
Slide presentation
Abstract:
In Germanyare about 8,000 biogas plants in operation, with an installed electrical capacity of 4.5 GW. Within the amendments of the EEG in 2012 and 2014 thelegislative authority promotes a paradigm shift for biogas plants away from a previous and mostly current base load power generation towards a demand driven and flexible power generation. This aim requires a fundamental rethinking in how anappropriate concept for biogas plants should look like. One critical issue is how the price patterns at power exchange are in line with the demand patterns for connected heat sinks. We elaborate some simulations for current-controlled and heat-controlled operation schedules under a cogeneration share of 40%. If power generation schedule doesn’t match the heatload profileheat demand can be ensured by a heat-storage or/ and a peak load boiler, respectively. We figure out the combination of storage and peak-load in terms ofleast cost intensive. The challenge, to find the most preferable configuration under different conditions is done by a modelling with discrete input factor variation. Based on these modelling an optimal linkof heat-storage and peak-load boiler is calculated in regardsto investments and operating costs.
Keywords:
cogeneration, combined heat and power generation (CHP), agricultural biogas plants, flexibility, peak load boiler, trade off, heat storage
Topic:
Bioenergy in Integrated Energy Systems
Subtopic:
Integration of bioenergy with other renewable and conventional energy sources, combination of energetic and material use
Event:
24th European Biomass Conference and Exhibition
Session:
5AO.9.1
Pages:
1619 - 1622
ISBN:
978-88-89407-165
Paper DOI:
10.5071/24thEUBCE2016-5AO.9.1
Price:
FREE
