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| Azadbakht, Mohsen; Ziaratban, Armin; Vahedi Torshizi, Mohammad; Aghili, Hajar. |
| In this research, energy and exergy loss were analyzed in the laboratory for the drying of eggplant using a fluidized bed dryer. The drying experiment was conducted at inlet temperatures of 40, 50, and 60 and air velocities of 3, 5, and 7 m/s using samples with diameters of 5, 10, and 13 mm and a height of 1 cm. The effects of temperature, velocity of drying air, and sample size on energy consumption and exergy losses were investigated. The results showed that the minimum energy consumption and exergy losses occurred at a diameter of 13 mm, velocity of 3 m/s, and temperature of 40. Meanwhile, the maximum energy consumption and exergy losses occurred at diameter of 5 mm, velocity of 7 m/s and temperature of 60;. Generally, the results demonstrated that... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Energy utilization; Exergy losses; Eggplant; Fluidized bed dryer; Temperature; Air velocity. |
| Ano: 2017 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4116 |
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| Alaa Kiwan Kiwan; Leibniz Institute for Agricultural Engineering Potsdam-Bornim (ATB), Germany.; Werner Berg; Leibniz Institute for Agricultural Engineering Potsdam-Bornim (ATB), Germany.; Reiner Brunsch; Leibniz Institute for Agricultural Engineering Potsdam-Bornim (ATB), Germany.; Sezin Özcan; K.U. Leuven, Faculty of Bioscience Engineering, Leuven, Belgium.; Hans-Joachim Müller; Leibniz Institute for Agricultural Engineering Potsdam-Bornim (ATB), Germany.; Manfred Gläser; Leibniz Institute for Agricultural Engineering Potsdam-Bornim (ATB), Germany.; Merike Fiedler; Leibniz Institute for Agricultural Engineering Potsdam-Bornim (ATB), Germany.; Christian Ammon; Leibniz Institute for Agricultural Engineering Potsdam-Bornim (ATB), Germany.; Daniel Berckmans; K.U. Leuven, Faculty of Bioscience Engineering, Leuven, Belgium.. |
| Naturally ventilated barns have the advantage of providing an energy-efficient and low-noise micro-environment for animals. Such barns are very common, especially for cattle, which are a major source of ammonia and methane emissions as well as other airborne pollutants. Emission fluxes are calculated as the product of the ventilation rate (VR) and the gas concentration. The VR of naturally ventilated barns are directly influenced by atmospheric conditions. Therefore, the estimation of VR involves high uncertainties; furthermore, there is no reference method for VR estimation. For these reasons, three different methods were investigated to estimate VR through naturally ventilated dairy barns: (1) the tracer gas... |
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Palavras-chave: Natural ventilation; Tracer gas technique; Radioactive isotope 85Kr; Air velocity; Air exchange rate; Dairy barn. |
| Ano: 2012 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/1981 |
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| Mendes,A.S.; Moura,D.J.; Nääs,I.A.; Bender,J.R.. |
| This research had the objective of evaluating the influence of the natural ventilation on the surface temperature distribution of heated crates. The research used six crates from a farrowing room in a commercial swine production farm located in the state of São Paulo, Brazil. Three crates were heated using a heat mat while the other three had the environment heated by incandescent light bulbs (200W) fixed on the lateral wall. The surface temperature of the crate's floor (1.55x0.55m) was registered in 36 points, distributed in 18 quadrants (0.26x0.18m) using an infrared thermometer in three different conditions of the room's natural ventilation: opened, semi-opened, and closed lateral curtain. The isotherms and the temperature distribution of the floor heat... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Thermal comfort; Air velocity; Farrowing; Swine. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000200025 |
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