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Effect of heat insulation on the energy consumption of recirculating mixed-flow batch grain dryer CIGR Journal
Jokiniemi, Heikki Tapani; Ahokas, Jukka Matias.
The effects of heat insulation on the energy consumption and efficiency of a recirculating mixed-flow type grain dryer were examined.  Energy saving potential was estimated by theoretical calculations and by heat flow measurements.  Actual energy consumption was measured in two identical drying silos, only one of which was insulated.  The measurements were conducted in farm-scale dryers under practical farm working conditions.  Theoretical heat loss calculations and the heat flow measurements predicted an energy saving potential of ca. 5%–9% of the dryer heating energy.  However, the actual energy consumption measurements over three years indicated energy savings of 16%–21% for the insulated dryer compared to its uninsulated counterpart, when energy...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Agriculture engineering grain drying; Grain dryer; Energy consumption; Efficiency; Heat losses; Heat insulation.
Ano: 2014 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2929
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Effect of cereal stubble management on the combine harvester performance and energy requirements CIGR Journal
Jokiniemi, Heikki Tapani.
Combine harvesting is one of the most energy consuming field operations in arable farming. The power demand of combine harvester depends strongly on the mass flow through the machine, and one approach to reduce the energy consumption is thus increasing the stubble height in harvesting. In this study, the energy saving possibilities by increased stubble height and different straw management in cereal harvesting were examined. In addition to combine harvesting, the mulching of the tall stubble with a tractor powered rotary mower after the harvest was investigated. The results indicated an energy saving of 22%–24% in combine harvesting of spring wheat “Quarna” when the stubble height was increased from 13 cm to 35 cm, and 17% with 13 cm stubble when the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Combine harvesting; Cereal; Stubble height; Energy; Fuel consumption; Stubble mulching.
Ano: 2015 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3360
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