Title:
Development of a New Micro CHP Pellet Stove Technology
Author(s):
Obernberger, I., Weiß, G., Kössl, M.
Document(s):
Paper
Slide presentation
Abstract:
Biomass based room heating systems are very common for space heating throughout Europe. In the recent 15 years pellet stoves became more and more popular due to their advantages regarding automatic control, user friendliness and their low emissions in comparison to logwood stoves. However, the need of an external electric power supply to operate the pellet stove is a disadvantage especially with regard to fail-proof and independent heating systems. Thus, BIOS and RIKA developed within the ERA-NET-project “Small-scale BM based CHP” a new micro CHP technology based on a wood pellet stove (thermal capacity 10 kW) with a thermoelectric generator (TEG), that enables the operation of the stove without electric grid connection. The TEG system is a wear- and maintenance-free and also noiseless technology and thus ideally suitable for applications in living rooms. The TEG is cooled by a water circuit which makes it possible to supply an additional room with heat. As a first step towards a self-sustaining operation of the pellet stove, the electricity consumption could be reduced by more than 50% by an optimisation of the control system and the selection of appropriate low voltage components. In a second step a TEG with an electric power of up to 50 W was installed. The electricity produced by the TEG system covers the energy demand for start-up, operation and shutdown of the pellet stove. In addition, surplus electricity produced can be used to charge mobile phones or other small consumers.
Keywords:
combined heat and power generation (CHP), pellet, wood, stove, thermos-electric generator
Topic:
Biomass Conversion Technologies for Heating, Cooling and Electricity
Subtopic:
Biomass and Bioliquids Combustion for Small and Medium Scale Applications
Event:
25th European Biomass Conference and Exhibition
Session:
2AO.2.1
Pages:
344 - 350
ISBN:
978-88-89407-17-2
Paper DOI:
10.5071/25thEUBCE2017-2AO.2.1
Price:
FREE
