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Effect of fans' placement on the indoor thermal environment of typical tunnel-ventilated multi-floor pig buildings using numerical simulation (2022)

Art

Zeitschriftenartikel / wissenschaftlicher Beitrag

Autoren

Wang, Xiaoshuai

Cao, Mengbing

Hu, Feiyue

Yi, Qianying

Amon, Thomas (WE 10)

Janke, David

Xie, Tian

Zhang, Guoqiang

Wang, Kaiying

Quelle

Agriculture

Bandzählung: 12

Heftzählung: 6

Seiten: Artikel 891

ISSN: 2077-0472

Sprache

Englisch

Verweise

URL (Volltext): https://www.mdpi.com/2077-0472/12/6/891

DOI: 10.3390/agriculture12060891

Kontakt

Institut für Tier- und Umwelthygiene

Robert-von-Ostertag-Str. 7-13
14169 Berlin
+49 30 838 51845
tierhygiene@vetmed.fu-berlin.de

Abstract / Zusammenfassung

An increasing number of large pig farms are being built in multi-floor pig buildings (MFPBs) in China. Currently, the ventilation system of MFPB varies greatly and lacks common standards. This work aims to compare the ventilation performance of three popular MFPB types with different placement of fans using the Computational Fluid Dynamics (CFD) technique. After being validated with field-measured data, the CFD models were extended to simulate the air velocity, air temperature, humidity, and effective temperature of the three MFPBs. The simulation results showed that the ventilation rate of the building with outflowing openings in the endwall and fans installed on the top of the shaft was approximately 25% less than the two buildings with fans installed on each floor. The ventilation rate of each floor increased from the first to the top floor for both buildings with a shaft, while no significant difference was observed in the building without a shaft. Increasing the shaft’s width could mitigate the variation in the ventilation rate of each floor. The effective temperature distribution at the animal level was consistent with the air velocity distribution. Therefore, in terms of the indoor environmental condition, the fans were recommended to be installed separately on each floor.