Exploring Ventilation Efficiency in Poultry Buildings: The Validation of Computational Fluid Dynamics (CFD) in a  Cross-Mechanically Ventilated Broiler Farm

Bustamante, Eliseo; García-Diego, Fernando-Juan; Calvet, S.; Estellés, F.; Beltrán, Pedro Juan Martínez; Hospitaler, Antonio; Torres, Álvaro Pastor

doi:10.3390/en6052605

Cited by 54 publications

(69 citation statements)

References 22 publications

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“…The descriptive analysis shows a clear deficiency in the ventilation system that is persistent in these broiler houses (Bustamante et al, 2013). Actually, birds in these facilities (Dark House, Double Wide House, and Solid Wall) remained under thermal stress, that is, the temperature was above 20 °C, as recommended by the Broiler Management Guide by Cobb-Vantress (2012), at the final production stage with possible negative consequences in feed conversion and weight of the bird.…”

Section: Environmental Conditions -Descriptive Analysismentioning

confidence: 99%

“…Livestock production, especially broiler rearing, in tropical countries is affected by the confluence of high temperature and relative humidity values, which hinder the production process (heat stress and mortality problems) when the animals are at the final stage of the production (Bustamante et al, 2013;Nääs et al, 2010;Petracci et al, 2006;Renaudeau et al, 2012). The thermal environment represented by temperature, relative humidity, wind speed and solar radiation can endanger homeothermy, which plays a key role in broiler production by affecting productive response (feed efficiency and weight gain) and animal welfare (Khan et al, 2011;Razuki et al, 2011;Roussan et al, 2008;Yahav et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

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Positioning of sensors for control of ventilation systems in broiler houses: a case study

Curi

Conti

Vercellino

et al. 2017

Sci. agric. (Piracicaba, Braz.)

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Ventilation systems are incorporated at intensive poultry farms to control environment conditions and thermal comfort of broilers. The ventilation system operates based on environmental data, particularly measured by sensors of temperature and relative humidity.Sensors are placed at different positions of the facility. Quality, number and positioning of the sensors are critical factors to achieve an efficient performance of the system. For this reason, a strategic positioning of the sensors associated to controllers could support the maintenance and management of the microclimate inside the facility. This research aims to identify the three most representative points for the positioning of sensors in order to support the ventilation system during the critical period from 12h00 to 15h00 on summer days. Temperature, relative humidity and wind speed were measured in four different tunnel ventilated barns at the final stage of the production cycle. The descriptive analysis was performed on these data. TheTemperature and Humidity Index (THI) was also calculated. Then, the geostatistical analysis of THI was performed by GS + and the position of sensors was determined by ordinary kriging. The methodology was able to detect the most representative points for the positioning of sensors in a case study (southeastern Brazil). The results suggested that this strategic positioning would help controllers to obtain a better inference of the microclimate during the studied period (the hottest microclimate), considered critical in Brazil. In addition, these results allow developing a future road map for a decision support system based on 24 h monitoring of the ventilation systems in broiler houses.

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Section: Environmental Conditions -Descriptive Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Positioning of sensors for control of ventilation systems in broiler houses: a case study

Curi

Conti

Vercellino

et al. 2017

Sci. agric. (Piracicaba, Braz.)

View full text Add to dashboard Cite

show abstract

“…This problem causes economic losses and animal suffering, which is inconceivable since producers own technological tools in broiler houses and regulations to ensure the welfare of broiler production (BUSTAMANTE et al, 2013).…”

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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“…For example, in dairy cattle there are interesting papers on ventilation from the Aarhus University (Wu et al, 2012;Shen et al, 2013) or research on ammonia emissions (Sun et al, 2002;Bjerg et al, 2013) (Predicala and Maghirang, 2003;Mossad, 2009;Tong et al, 2013), poultry (Pawar et al, 2010;Zajicek and Kic, 2012;Bustamante et al, 2013) or rabbit (Flores-Velázquez et al, 2013). A paper on trends regarding research on livestock pollutant emissions, including CFDs, has been recently published (Takai et al, 2013) (Figure 2).…”

Section: Computational Fluid Dynamics In Buildings and Infrastructurementioning

confidence: 99%

Present and future of the numerical methods in buildings and infrastructures areas of biosystems engineering

Ayuga

2015

J Agricult Engineer

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Biosystem engineering is a discipline resulting from the evolution of the traditional agricultural engineering to include new engineering challenges related with biological systems, from the cell to the environment. Modern buildings and infrastructures are needed to satisfy crop and animal production demands. In this paper a review on the status of numerical methods applied to solve engineering problems in the field of buildings and infrastructures in biosystem engineering is presented. The history and basic background of the finite element method is presented. This is the first numerical method implemented and also the more developed one. The history and background of other two more recent methods, with practical applications, the computer fluids dynamics and the discrete element method are also presented. Besides, a review on the scientific and professional applications on the field of buildings and infrastructures for biosystem engineering needs is presented. Today we can simulate engineering problems with solids, engineering problems with fluids and engineering problems with particles and get to practical solutions faster and cheaper than in the past. The paper encourages young engineers and researchers to make progress these tools and their engineering applications. The capacities of all numerical methods in their present development status go beyond the present practical applications. There is a broad field to work on it. IntroductionThe present paper is a review of the numerical methods at present and their applications in solving engineering problems. The field is too wide to be considered in a single article. This is why the paper focuses on presenting the fundamentals of the most significant numerical methods that can be applied for buildings and infrastructures areas of biosystems engineering. The three next numerical methods will be considered: i) finite element method (FEM); ii) computer fluid dynamics (CFD); iii) discrete element method (DEM).In the paper the main features of these methods will be presented along with showing some examples in areas of biosystems engineering. Modern engineering can be considered to begin with the industrial revolution in the late eighteenth and early nineteenth century. From the very beginning, it has used the most powerful mathematical tools of the time in order to solve problems arising in practice. It was considered a fact that it was essential acquiring solid mathematical foundations for being a good engineer. The programs of studies from all Universities of the time prove it so. Even great figures on mathematics of the nineteenth and twentieth centuries were formally engineers. This symbiosis has produced good results for society. In the second half of XX Century, the fast development of computer science produced a great advance in numerical methods applied to physics and engineering.Based on this premise, the predictable future is that calculation and structural analysis in all fields of engineering will be based on modern numerical methods. This power...

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Exploring Ventilation Efficiency in Poultry Buildings: The Validation of Computational Fluid Dynamics (CFD) in a Cross-Mechanically Ventilated Broiler Farm

Cited by 54 publications

References 22 publications

Positioning of sensors for control of ventilation systems in broiler houses: a case study

Positioning of sensors for control of ventilation systems in broiler houses: a case study

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

Present and future of the numerical methods in buildings and infrastructures areas of biosystems engineering

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