Journal of Biosystems Engineering

Korean Society for Agricultural Machinery (한국농업기계학회)
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Necessary Conditions for Optimal Ventilation of Small Negative Pressure Ventilating Piglet House with Corridor and Attic for Preheating

소규모 복도-더그매 예열 음압환기방식 무창자돈사의 최적 환기 요건에 관한 연구

  • Lee, Seung-Joo (Division of Bioresources Engineering, Chungnam National University) ;
  • Chang, Dong-Il (Division of Bioresources Engineering, Chungnam National University) ;
  • Hwang, Seon-Ho (Department of Animal Science, Gyeongsang National University) ;
  • Gutierrez, Winson M. (Department of Animal Science, Gyeongsang National University) ;
  • Chang, Hong-Hee (Department of Animal Science, Gyeongsang National University)
  • Received : 2010.07.20
  • Accepted : 2010.11.25
  • Published : 2010.12.25
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Abstract

This study was carried out to determine necessary conditions for optimal ventilation of small windowless piglet house (4.0 (W) $\times$ 11.0 (L) $\times$ 2.6(H) m) with corridor and attic for preheating using CFD (Computational Fluid Dynamics) simulation. The experimental weaning piglet house was consisted of a corridor, an attic, 4 rooms (3.0 (W) $\times$ 2.75(L) m), 3 fences (0.7(H) m), 5 air inlets and 2 exhaust fans (0.4 (D) m) and simulated using CFD code, FLUENT. The simulation results for the experimental weaning piglet house showed that each room was uniformly ventilated under all the experimental conditions and air velocities at 0.1 m above floor are less than 0.15 m/s for 0.75 m/s and 1.0 m/s of air inlet velocity but 0.61 m/s for 1.25 m/s. The simulation results are similar to the measured results. Considering the air flow pattern, ventilating efficiency, air velocity at 0.1 m above floor and cold stress of weaning piglets and so on, the optimum velocity of air inlet might be 1.0 m/s.

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References

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