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Ohagwu, Chukwuemeka Jude; Okonkwo, Ifeanyi Wilfred; Mbah, Godwin Christopher Ezike; Njoku, Howard Okezie. |
Computational modeling, simulation and validation were carried out on Trombe wall solar chick brooder used for optimal poultry production. Predictive linear differential equations based on physical, mathematical principles and relationships governing thermo-physical properties of the components of the brooder were formulated, discretized and expressed in their finite different forms using SCILAB 5.5.2. T-test statistics was carried out on predicted and measured mean data: temperature of Trombe wall glaze (TG1), temperature of pebble glaze (TG2), temperature of the pebble bed bin (Tp), temperature of the brooding room (TBr), and temperature of the Trombe wall outer surface (Tw (outer surface))then separated using Levene test for equality. The model... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Computational modeling; Passive Trombe wall solar chick brooder; Simulation; Validation; Poultry production. |
Ano: 2021 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6833 |
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Gonçalves,Adriano D. M. A.; Miranda,Jarbas H.; Rossi,Paulo; Sabadin,José F. G.; Kamogawa,Marcos Y.. |
When doing researches on solute dynamics in porous medium, the knowledge of medium characteristics and percolating liquids, as well as of external factors is very important. An important external factor is temperature and, in this sense, our purpose was determining potassium and nitrate transport parameters for different values of temperature, in miscible displacement experiments. Evaluated parameters were retardation factor (R), diffusion/dispersion coefficient (D) and dispersivity, at ambient temperature (25 up to 28 ºC), 40 ºC and 50 ºC. Salts used were potassium nitrate and potassium chlorate, prepared in a solution made up of 5 ppm nitrate and 2.000 ppm potassium, with Red-Yellow Latosol porous medium. Temperature exhibited a positive influence upon... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Breakthrough curves; Miscible displacement; Computational modeling. |
Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162008000300005 |
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