Measurement and Numerical Simulation of Air Velocity  in a Tunnel-Ventilated Broiler House

Bustamante, Eliseo; García-Diego, Fernando-Juan; Calvet, S.; Torres, Álvaro Pastor; Hospitaler, Antonio

doi:10.3390/su7022066

Cited by 30 publications

(28 citation statements)

References 27 publications

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“…Nowadays, for the majority of large-scale poultry buildings in China, the indoor air is conditioned for most of the year by means of climate control systems that consist of automatically regulated mechanical ventilation, radiator and evaporative cooling equipment. With regard to the type of the ventilation, the most widely used type in China for both broiler and laying hen houses is tunnel ventilation system although other types of ventilation such as cross ventilation and single-sided ventilation are popular in USA and European countries (Blanes-Vidal et al, 2008;Calvet et al, 2010;Bustamante et al, 2013;Bustamante et al, 2015;Bustamante et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…For example, various studies have analyzed the indoor flow pattern (Sun et al, 2002), the influence of sub-model representing heat and mass sources from animals and litter (Rojano et al, 2014;Rojano et al, 2015), and the impact of different boundary conditions on the internal field velocity (Lee et al, 2007;Blanes-Vidal et al, 2008). There are a few papers referring to the application of CFD models in studying naturally single-sided ventilation, cross-mechanical ventilation, tunnel ventilation and mechanical single-sided ventilation for poultry houses (Allocca et al, 2003;Blanes-Vidal et al, 2008;Salvet et al, 2010;Bustamante et al, 2013;Zajicek and Kic, 2013;Bustamante et al, 2015;Rojano et al, 2016;Bustamante et al, 2017;Cheng et al, 2018). However, it is noted that CFD technique has not been widely applied to study the tunnel ventilation system used in poultry houses.…”

Section: Introductionmentioning

confidence: 99%

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Computational Fluid Dynamics aided investigation and optimization of a tunnel-ventilated poultry house in China

Yang

Dominy

et al. 2019

Computers and Electronics in Agriculture

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Ventilation system is crucial for poultry houses to control the indoor climate and air quality. The tunnel ventilation system is widely applied for large-scale poultry buildings in China but only limited scientific researches regarding the flow pattern, temperature distribution and design criteria are available in the literature. Thanks to the fast development of computer technology, Computational Fluid Dynamics (CFD) techniques were used in present study to investigate the indoor air movement, air temperature and relatively humidity. A three-dimensional CFD model was built according to the real dimensions of a laying hen house and the model was validated by comparing the simulation results with the field measurements at 30 positions. Meanwhile, statistical analysis was performed to determine the differences between different boundary conditions regarding the agreement between measured and CFD simulated results. Optimization of air inlet configurations was performed by using the validated CFD model and it was found that the uniformity of indoor air movement could prevent excessive local convective heat losses and reduce the temperature at the end of the house. Furthermore, the air inlets placed at the middle of the side wall could significantly reduce the high temperature expected at the end of the building without using extra energy, which is especially important for large-scale poultry farms with long buildings.The performance of side-wall windows was also examined and preliminary guidance was provided to effectively regulate the indoor climate by using these windows with the help of environmental monitoring systems. The present study contributes to the understanding and design of the tunnel ventilation system used in poultry houses.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Computational Fluid Dynamics aided investigation and optimization of a tunnel-ventilated poultry house in China

Yang

Dominy

et al. 2019

Computers and Electronics in Agriculture

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“…The most prominent Brazilian agricultural activity in the world scenario is poultry farming. The country, in 2016, was the main exporter and the second in the ranking of the largest producers of chicken meat in the world (ABPA, 2016) and, although the negative pressure ventilation in aviaries is employed in countries of tropical and temperate climate such as Brazil, USA and Korea (Bustamante et al, 2015), in the Paraíba state, Brazil, it is being incorporated as a way to improve the production levels by correcting the internal microclimate of the facilities. Furtado et al (2003) concluded that, in the Agreste Paraibano mesoregion, the positive pressure systems, although equipped with nebulizers, were inefficient to maintain ideal thermal conditions for broilers, subjecting them to heat stress, especially in the hottest hours of the day.…”

Section: Introductionmentioning

confidence: 99%

“…In order to optimize the control of internal thermal conditions, diagnosis and validation studies, in which results of fluid simulations were compared to measurements collected in the field, have been carried out (Blanes-Vidal et al, 2008;Bustamante et al, 2013;Hernández et al, 2013;Xue et al, 2016;Curi et al, 2017b). Validated computational fluid dynamics (CFD) models can contribute to reducing time and cost with repetitions in experiments and improving poultry house facilities from parametric simulations, besides providing information on the whole internal environment, whereas field measurements are limited (Bustamante et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Diagnosis and validation by computational fluid dynamics of poultry house with negative pressure ventilation

Cunha

Lopes

Furtado

et al. 2019

Rev. bras. eng. agríc. ambient.

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Negative pressure ventilation in poultry houses has been used to enable the correction of their internal microclimates, and studies point to the heterogeneous distribution of air along the aviaries and the inadequacy of the environmental variables to the recommended ranges for thermal comfort of adult birds, especially in the hottest hours of the day. This study aimed to diagnose the facilities of a poultry house in the state of Paraíba, Brazil, regarding the distribution of environmental variables and thermal comfort; develop a computational model and validate it for Computational Fluid Dynamic - CFD simulations. Air temperature (Tair), air relative humidity (RH) and air velocity (Vair) data allowed characterizing the internal environment by comparison with the recommended ranges for each variable and by the temperature-humidity-velocity index (THVI). The poultry house does not provide comfort for the housed adult birds, between 12 and 14 h, with THVI indicating alert and Tair, RH and Vair values outside the recommended ranges; the CFD model for the poultry house was validated with Tair averages collected in the field of 27.75 ± 1.35 ºC and simulated of 27.85 ± 0.55 ºC, mean values of RH collected of 83 ± 12% and simulated of 78 ± 3%, and means of Vair collected of 2.35 ± 1.35 m s-1 and simulated of 2.50 ± 1.50 m s-1.

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“…Recently, the CFD modeling has been successfully used for building rural facilities, playing an important role in ventilation system optimization, positioning of the exhaust fans, assessment of system changes, analysis of system air flow and thermal exchanges for each type of animal facility (BLANES-VIDAL et al, 2012;BUSTAMANTE et al, 2013BUSTAMANTE et al, , 2015. ZHAO et al, 2013;NORTON et al, 2013;ABID et al, 2013;GUERRA-GALBO et al, 2015.…”

Section: Introductionmentioning

confidence: 99%

Computational Fluid Dynamics (Cfd) Application for Ventilation Studies in Broiler Houses

et al. 2017

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ABSTRACT:With the recent increase in the number of acclimatized broiler houses in Brazil, design and adaptation of facilities to withstand the tropical weather conditions enabling the maintenance of ideal conditions without increasing costs have been major challenges. The aim of this study was to evaluate the ventilation system in solid-wall broiler houses using computational fluid dynamics (CFD). The research was carried out in the city of Amparo -SP (Brazil). The facility consisted of a broiler house enclosed by masonry sidewalls with tunnel ventilation equipped with exhaust fans (air outlet) and cooling pads (air inlet). The following variables were collected: wind speed and dry bulb temperature over 27 equidistant points inside the house at bird height (0.30 m above the floor), wind speed in inlet -cooling pad, and static pressure in the outlet (exhaust fans) as a boundary condition. The data were monitored at the most critical time of the day -2 pm during the final rearing stage in summer. The CFD technique allowed visualizing the air flow according to each running condition for exhaust fans, as well as determined the best setting of exhaust fans, avoiding a low air area renewal and turbulence.

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Measurement and Numerical Simulation of Air Velocity in a Tunnel-Ventilated Broiler House

Cited by 30 publications

References 27 publications

Computational Fluid Dynamics aided investigation and optimization of a tunnel-ventilated poultry house in China

Computational Fluid Dynamics aided investigation and optimization of a tunnel-ventilated poultry house in China

Diagnosis and validation by computational fluid dynamics of poultry house with negative pressure ventilation

Computational Fluid Dynamics (Cfd) Application for Ventilation Studies in Broiler Houses

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