Maquinas Pneumaticas
Mostrando 1-5 de 5 artigos, teses e dissertações.
-
1. Transporte unitario de grãos agricolas por processo pneumatico, em dutos de pequeno diametro
This research work is fundamentally related to the development of the basics of grain fluidic distributers in which single grains are pumped along small dia,meters tubes. The model is based upon pneumatic transport theory envolving variables of interest such density, sife and form of grain, velocity an air pressure. As expected, the analysis is very complexo
Publicado em: 1991
-
2. Dimensionamento de bomba de diafragma para utilização em semeadoras pneumaticas
ormado.
Publicado em: 1989
-
3. Modelagem e simulação de secadores pneumaticos verticais
We propose in this paper the unidimensional mathematical model of a vertical pneumatic dryer and verify the influence of porosity variation on the model. The model equations are obtained from the equations of momentum, energy and mass conservation. Eight of these equations are proposed, involuing fluid velocity, solid velocity, pressure, porosity, fluid and
Publicado em: 1987
-
4. Transferencia de calor gas solido no transporte pneumatico vertical
An experimental investigation was carried out to obtain the average convective heat transfer from air to spherical glass particles in vertical pneumatic conveying. The aim is to find a relationship between the flow and thermal variables, including the effect of solid particles concentration. The test section consisted of a vertical tube with 0.0521 m I.D. an
Publicado em: 1986
-
5. Estudo experimental do secador pneumatico vertical
This work is related with studies on the performance of a vertical pneumatic dryer on a well instrumented pilot plant. Experiences were rea1ized with sand particles with a mean diameter of 0.46mm and 0.55mm and glass spheres with a mean diameter of 0.24mm, in a drying tube with 4m high and an inside diameter of 5.25cm, aiming the determination of the air hum
Publicado em: 1986