Integration of a cob separation system into a biomass harvesting combine

dc.contributor.advisor Stuart J. Birrell
dc.contributor.author Johnson, Jeremiah
dc.contributor.department Agricultural and Biosystems Engineering
dc.date 2018-08-11T17:02:36.000
dc.date.accessioned 2020-06-30T02:34:19Z
dc.date.available 2020-06-30T02:34:19Z
dc.date.copyright Fri Jan 01 00:00:00 UTC 2010
dc.date.embargo 2013-06-05
dc.date.issued 2010-01-01
dc.description.abstract <p>Before the invention of a combine harvester, corn was picked on the ear and threshed later. This led to an availability of corn cobs and many uses were found. A renewed interest in the heat/energy value of the cob has increased the focus on harvesting corn cobs. A corn cob separation system was developed and installed on a single pass biomass harvesting combine. The system included a blower and two fans and the combine was capable of harvesting grain only, grain and stover, and grain and cobs. The cob separation system was evaluated using a stationary test with earcorn and stover bales with minimal field testing to validate the lab tests. The stationary tests evaluated 5 different separation zone configurations, 2 blower speeds, and 2 fan speeds. Cob purity averaged 71% and the collection efficiency averaged 84% with fan power consumption of 20 and 36 kW and blower power consumption of 3.1 and 5.3 kW. Field tests showed cob purity averages of 84% while the collection efficiency averaged 76%.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/etd/11241/
dc.identifier.articleid 2270
dc.identifier.contextkey 2807468
dc.identifier.doi https://doi.org/10.31274/etd-180810-81
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath etd/11241
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/25447
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/etd/11241/Johnson_iastate_0097M_11060.pdf|||Fri Jan 14 18:45:50 UTC 2022
dc.subject.disciplines Bioresource and Agricultural Engineering
dc.title Integration of a cob separation system into a biomass harvesting combine
dc.type article
dc.type.genre thesis
dspace.entity.type Publication
relation.isOrgUnitOfPublication 8eb24241-0d92-4baf-ae75-08f716d30801
thesis.degree.level thesis
thesis.degree.name Master of Science
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