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Pelletizing study of agricultural residues: Parameters and energy consumption
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Heat and Power Technology.ORCID iD: 0000-0003-0042-0227
2011 (English)Report (Other academic)Alternative title
(English)
Place, publisher, year, edition, pages
2011.
Series
Internal report at Department of Energy Technology, Royal Institute of Technology, Stockholm, Sweden, EKV 05/11
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-107458OAI: oai:DiVA.org:kth-107458DiVA: diva2:575973
Note

QC 20130618

Available from: 2012-12-11 Created: 2012-12-11 Last updated: 2014-09-03Bibliographically approved
In thesis
1. Combustion of agricultural residues: Application for Stirling micro-combined heat and power
Open this publication in new window or tab >>Combustion of agricultural residues: Application for Stirling micro-combined heat and power
2014 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Access to energy services is crucial for the development of countries. Therefore, in developing countries, the access to modern conversion technologies would contribute to reduce the poverty, improve health services and promote the economy especially in rural areas. Around 2.5 billion people in these countries use biomass for cooking. However, major concerns are due to the unsustainable use of biomass and the inefficient conversion technologies employed in rural areas. Therefore, the use of locally available biomass in modern biomass conversion technologies would significantly reduce emissions and improve the energy efficiency. These modern technologies may include residential pellet stoves and boilers which at the moment only are used for heating appliances in industrialized countries. Their combination with a prime mover like a Stirling engine could a very attractive solution to produce combined heat and power (CHP) though still in prototype stage. In this context, this study is mainly focused on the development of an energy system fuelled by locally available biomass to produce heat and electricity based on a Stirling engine. The main objective is to perform experiments to find relevant parameters that characterize the energy system proposed.

In the first stage of this work, the suitability of using agricultural residues in a pellet boiler was evaluated in comparison to commercial wood pellets. The agricultural residues used during the tests were: sugar cane bagasse, sunflower husks and Brazil nut shells. The first two residues were pelletized and the last one was reduced to a uniform size. Parameters and energy used during the pelletizing were found. Emission levels and boiler efficiency under steady-state and transient conditions were also presented for the different biomass sorts. In the second stage, the integration of the same pellet burner and the Stirling engine was characterized in terms of losses and efficiency calculations. Finally, the integration of the pelletizing, combustion, and heat and power generation was discussed based on experimental and predicted results.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2014. xx, 85 p.
Series
TRITA-KRV, ISSN 1100-7990 ; 14:03
National Category
Energy Engineering
Research subject
Energy Technology
Identifiers
urn:nbn:se:kth:diva-150350 (URN)978-91-7595-241-3 (ISBN)
Public defence
2014-09-22, Kollegiesalen, Brinellvägen 8, KTH, Stockholm, 10:00 (English)
Opponent
Supervisors
Note

QC 20140903

Available from: 2014-09-03 Created: 2014-09-01 Last updated: 2014-09-03Bibliographically approved

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Cardozo Rocabado, Evelyn

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Citation style
  • apa
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