• Title/Summary/Keyword: livestock building

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Troubleshooting System for Environmental Problems in a Livestock Building Using an Expert System and a Neural Network (전문가시스템과 신경회로망에 의한 축사환경개선시스템)

  • ;Don D. Jones
    • Magazine of the Korean Society of Agricultural Engineers
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    • v.36 no.1
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    • pp.95-102
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    • 1994
  • Since parameters influencing the indoor environment of livestock building interrelate so complicatedly, it is of great difficulty to identify the exact cause of environmental problems in a livestock building. Therefore, the approaches for the problem solving based on experience not numerical calculation will be helpful to the management of livestock building This study was attempt to develop the decision supporting system to diagnose environmen- tal problems in a livestock building based on an expert system and a neural network. HClips$^3$), attaching the Hangeul user interface to Clips which is known as a powerful shell for develop- ing expert system, was used. The multilayer perceptron consisting of 4 layers including back propagation learning algorithm was adpoted, which was rapidly converged within the allowable range at 50,000 learning sweeps. The expert system and neural network seemed to work well for this specific application, providing proper suggestions for some environmental problems: particularly, the neural net- work trained by an environmental problem and its corresponding answer with certainty factor, produced the same results as those by expert system.

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Analysis of Ventilation Efficiency by Duct System in Pig House (돈사 덕트 환기시스템의 효율 분석)

  • Song, J.I.;Yoo, Y.H.;Lee, D.S.;Choi, H.C.;Kang, H.S.;Kim, T.I.;Jeon, B.S.;Park, C.H.;Kim, H.H.
    • Journal of Animal Environmental Science
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    • v.8 no.2
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    • pp.73-78
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    • 2002
  • The experiment was carried out to investigate the optimal air velocity for improving the ventilation efficiency of duct ventilation system used in Korean swine building. The results are followed ; In 2.2 m height of duct, the air velocity of hole was 5.0 m/s as the over level of recommendation. In different hole interval, the air velocity was various of 4.6${\sim}$11.6 m/s in narrow hole interval, 5.4${\sim}$10.9 m/s in broad hole interval. But the air velocity was 6.6${\sim}$7.7 m/s in duct system pierced hole with equal interval, and it was equal velocity in different parts of duct in this hole interval.

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Solution for the Improvement in Structural Design & Application of PEB System for the Standard Livestock Housing(2008) (표준축사 모델에서 PEB시스템의 적용 및 구조설계 개선방안)

  • Park, Man-Woo;Do, Byung-Ho;Song, Jun-Ik
    • Journal of Animal Environmental Science
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    • v.15 no.1
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    • pp.17-28
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    • 2009
  • PEB system is more economical when compared with structures commonly used Hot rolled and welded light H-beam was introduced in the Standard Livestock Housing. This study suggested more economical technology for structural design by the reduction of live load, relief of deflection limit and reduction of importance factor. And, when applying wind Load as a result of examination with Low Rise Building Systems Manual considering open model, we can know that when the wind load is big, enclosed model is more stable than open model. In short, Suggesting more economical model and providing the method to reduce natural disaster, by the application of PEB system and the development of technology for structural design, are considered to strengthen the competitive power of farmhouse.

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Evaluation of Odor Dispersion from Livestock Building through Field Experiment (현장실험을 통한 축산시설로부터 배출되는 축산악취의 확산 평가)

  • Yeo, Uk-Hyeon;Lee, In-Bok;Ha, Tae-Hwan;Decano, Cristina;Kim, Rack-Woo;Lee, Sang-Yeon;Kim, Jun-Gyu;Choi, Young-Bae;Park, You-Me
    • Journal of The Korean Society of Agricultural Engineers
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    • v.61 no.6
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    • pp.21-30
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    • 2019
  • Livestock odor is comprised of mixed type of odorous compounds. Among these, ammonia ($NH_3$) and hydrogen sulfide ($H_2S$) are the two known major odor causing substances. Because high odor concentration reduces productivity of livestock and causes damage to the surrounding communities, quantitative analysis is needed to manage the odor inside and outside the livestock facilities. It is also necessary to evaluate odor dispersion according to the distance between the receptors taking into account the influence of odor source and weather condition. Therefore, in this study, we tried to evaluate the internal environment and odor dispersion from experimental pig house considering weather conditions. An experimental farm was specifically selected to eliminate the interference of odors generated by adjacent farms. $NH_3$ and complex odor were quantitatively analyzed using a gas detector and air dilution sensory method. The concentration of $NH_3$ and complex odor in pig house showed a distinct concentration difference according to the cleaning and ventilation conditions. $NH_3$ concentration and complex odor was lower than emission standard in the pig house and at the site boundary. The average $NH_3$ concentration (P1~P3) and the $NH_3$ concentration at the site boundary (S1) were strongly correlated with R=0.77. While the correlation for complex odor inside and at the site boundary had R=0.52. The correlation coefficient between $NH_3$ and the complex odor was 0.80.

Total assessment for phosphorus input load of public wastewater and livestock manure treatment facilities in Korea (우리나라 공공하수처리시설 및 가축분뇨공공 처리시설의 인(P) 유입부하량에 대한 총량평가)

  • Kim, Weonjae
    • Journal of Korean Society of Water and Wastewater
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    • v.32 no.4
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    • pp.325-335
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    • 2018
  • The annual total phosphorus load caused by public wastewater, nightsoil and livestock manure treatment facilities in Korea has been examined macroscopically. Annual domestic average phosphorus (P) inflows through the income of phosphate rock for the last five years (2012 - 2016) were analyzed as 76,598 tons/year. As of the year 2015, the total loadings of phosphorus attributed to public wastewater treatment facilities, nightsoil treatment facilities and livestock wastewater were estimated as 30,269 tons/year, 1,909 tons/year and 18,138 tons/year, respectively. Considering the amount of phosphorus imports, the annual phosphorus load from wastewater, livestock wastewater and excretions is equivalent to 39.5%, 23.7%, 2.5% and totally 65.7%(39.5% + 23.7% + 2.5%). Therefore, the introduction of phosphorus recovery and recycling processes for the public wastewater and livestock manure treatment facilities has been found to be effective because it could reduce the import amount of phosphate rock by up to 60% or more.

A Farm Scale Study on the Modified Ventilation System for Improving Environmental Factors in a Confined Nursery Pig Building (무창자돈사의 환경요인 개선을 위한 변형환기시스템의 현장 평가 연구)

  • Kim, H.T.;Ko, H.J.;Kim, K.Y.;Nishizu, T.;Choi, H.L.
    • Journal of Biosystems Engineering
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    • v.31 no.3
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    • pp.175-181
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    • 2006
  • Nursery pig building is imperative to provide environmental conditions favorable to maintenance of piglet health and the efficiency of growth rate. To meet the ultimate goal, it is necessary to apply proper ventilation design and construction to a confinement livestock building. This study was conducted to investigate the performance of a modified ventilation system in terms of devised slot-inlet (modification I) and exhaust fan (modification II) to improve air change rate in a confined nursery pig building, with dimension of 5.9 m(W) ${\times}$ 12.6 m(L) ${\times}$ 2.2 m(H) in an Darby Genetic Station. The experiment was carried out in August, especially when the outdoor peak temperature were above $30^{\circ}C$ and the measured indoor environmental factors were temperature, air velocity, humidity and ammonia concentration which have been known to affect the piglet health and growth. There was no difference in indoor temperature between the original and modified ventilation systems, however the air velocity and ammonia concentration in confined nursery pig building with modified ventilation system were, in most cases, better performance than original ventilation system. Therefore, it was concluded that the slot-inlet system that kept indoor environmental factors pertinent and had an economic advantage, should be considered as a ventilation system for decreasing sensible heat from piglet in confined nursery pig building during extreme summer season.

A Study on Building System of e-Discovery about Logistics Information of Safty Agricultural-livestock Products (안심 농축수산물 물류정보에 관한 e-Discovery시스템 구축 연구)

  • Jung, Kyung-yong;Park, Dae-Woo
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • pp.287-290
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    • 2014
  • The Large-scale Agricultural & Livestock Products consists largely of distribution at The nation's of school and military foods. but false information on the Agricultural & Livestock Products in a safe food supply has become a social issue. The food suppliers deliver food resource in a school-large food establishments such as Change to domestic high-quality Livestock products from low-quality foreign Livestock products, Change to eco-friendly agricultural produce from normal agricultural produce, Change to fresh vegetables from contaminated vegetables. In this paper, e-Discovery system applies to the methods and security of incorrect logistics information and evidential data about illegal products of agriculture & livestock, it is necessary as studies about compensation and liability.

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Effects of Ventilation Types on Interior Environment of the Enclosed Farrowing-Nursery Pig House (무창 분만 ${\cdot}$ 자돈사 환기 형태가 돈사내 환경에 미치는 영향)

  • Yoo, Y.H.;Song, J.I.;Kang, H.S.;Jeon, B.S.;Kim, T.I.;Kim, H.H.
    • Journal of Animal Environmental Science
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    • v.8 no.2
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    • pp.79-86
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    • 2002
  • This study was conducted to collect basic data about the effects of ventilation types on the interior environment of the enclosed farrowing-nursery pig house in Anseong, Icheon and Jeungpyong. Surveyed ventilation types in the enclosed farrowing-nursery pig house are classified in to 4 types. In V1 type, air enters through a planar slot inlet placed on the juncture of the entering wall and exit through the chimney fan outlet; in V2 type, air enters through a perforated ceiling inlet and exits chimney fan outlet(V2); in V3 type, air enters through a circular duct inlet and exit chimney fan outlet(V3); in V4 type, enters through a circular duct inlet and exits side wall exhaust fan outlet(V4). Temperature, relative humidity, air velocity and ammonia concentration($NH_3$) were measured in the interior of swine building in the summer. Interior temperature was not remarkably different in all ventilation types in this study. However, temperature of the V4 was somewhat lower than that of the other types. Air velocity of the V4 was higher and $NH_3$ concentration of the V4 was lower than those of other ventilation types. It is suggested that the V4 ventilation type be applicable in the enclosed farrowing-nursery pig house in Korea.

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Calculated external pressure coefficients on livestock buildings and comparison with Eurocode 1

  • Kateris, D.L.;Fragos, V.P.;Kotsopoulos, T.A.;Martzopoulou, A.G.;Moshou, D.
    • Wind and Structures
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    • v.15 no.6
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    • pp.481-494
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    • 2012
  • The greenhouse type metal structures are increasingly used in modern construction of livestock farms because they are less laborious to construct and they provide a more favorable microclimate for the growth of animals compared to conventional livestock structures. A key stress factor for metal structures is the wind. The external pressure coefficient ($c_{pe}$) is used for the calculation of the wind effect on the structures. A high pressure coefficient value leads to an increase of the construction weight and subsequently to an increase in the construction cost. The EC1 in conjunction with EN 13031-1:2001, which is specialized for greenhouses, gives values for this coefficient. This value must satisfy two requirements: the safety of the structure and a reduced construction cost. In this paper, the Navier - Stokes and continuity equations are solved numerically with the finite element method (Galerkin Method) in order to simulate the two dimensional, incompressible, viscous air flow over the vaulted roofs of single span and twin-span with eaves livestock greenhouses' structures, with a height of 4.5 meters and with length of span of 9.6 and 14 m. The simulation was carried out in a wind tunnel. The numerical results of pressure coefficients, as well as, the distribution of them are presented and compared with data from Eurocodes for wind actions (EC1, EN 13031-1:2001). The results of the numerical experiment were close to the values given by the Eurocodes mainly on the leeward area of the roof while on the windward area a further segmentation is suggested.

Marketing Strategy to Improve on Branding Problems of Agricultural and Livestock Products (농축산물 브랜드화의 문제점 개선을 위한 마케팅전략)

  • 백기언
    • Proceedings of the Korean DIstribution Association Conference
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    • pp.211-233
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    • 2001
  • The aim of the present paper is to improve on branding problems of agricultural and livestock products in Korea by analyzing the statistical data which is present status of agricultural and livestock products published by ministry of agricultural and forest. To achieve the objective, raised 5 points at issue. Thus, the improvement schemes suggested from marketing point of view. And above issues are also discussed in the context of marketing mix. Then, the marketing strategy was developed which will apply branding management. The findings in this study is building a brand marketing system urgently fitted Korean style. For this project success, establishing event marketing and customer service department is necessary centering local National Agricultural Cooperative Federation(Nonghyup). Also needed education about brand knowledge to the people working for agricultural allied industries.

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