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| Camacho-Tamayo,Jesus H.; Barbosa,Angela M.; Pérez,Nancy M.; Leiva,Fabio R.; Rodríguez,Gonzalo A.. |
| The use of fertilizers and solid amendments in agriculture generates special interest for their effect on crop productivity, as well as for their environmental impact. The efficient use of these products demands knowing their physical and mechanical properties, the storing conditions effect and the operational characteristics of the metering systems used in the fertilizing equipment. In this context, the present study was developed with the purpose of evaluating the operational characteristics of different fertilizing metering systems and to determine the adequate metering system-product operational parameters, using powder lime, powder gypsum, granular 10-30-10 (N-P-K), and granular urea. Operational differences were established among four types of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fertilizer metering system; Agricultural machinery; Granular material. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162009000400010 |
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| Moreno,Fabian L.; Parra-Coronado,Alfonso; Camacho-Tamayo,Jesus H.. |
| Based on experimental tests, it was obtained the equations for drying, equilibrium moisture content, latent heat of vaporization of water contained in the product and the equation of specific heat of cassava starch pellets, essential parameters for realizing modeling and mathematical simulation of mechanical drying of cassava starch for a new technique proposed, consisting of preformed by pelleting and subsequent artificial drying of starch pellets. Drying tests were conducted in an experimental chamber by varying the air temperature, relative humidity, air velocity and product load. The specific heat of starch was determined by differential scanning calorimetry. The generated equations were validated through regression analysis, finding an appropriate... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Specific heat; Latent heat vaporization; Moisture equilibrium content; Rate drying. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000600018 |
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