Optimization of the ventilation system for a forced ventilation piggery

Mossad, Ruth (2009) Optimization of the ventilation system for a forced ventilation piggery. Journal of Green Building, 4 (4). pp. 113-133. ISSN 1552-6100


Pigs are subjected to intensive environment control and management in order to achieve higher productivity. This
is due to their sensitivity to climatic variation, which strongly affects their growth. This paper reports the design optimization of a forced ventilation piggery using computational fl uid dynamics. This numerical investigation
determined the effect of varying the number of ventilation openings and their location on the air fl ow pattern,
speed, temperature, power needed, ability to remove heat and residence time. The effect of varying the ventilation
rate in a range (0.05 – 0.8 m3/s), and ambient temperatures of 5°C and 32°C was also investigated. The modeled piggery has dimensions 40 m × 15 m × 2.6 m, with central walkway and gable roof with the apex at 3.9 m and
is a common design in Australia. A steady-state two-dimensional numerical model based on the integral volume
method, including the effects of buoyancy and heat generated by the pigs, was solved using the computational
fl uid dynamics software “Fluent.” Four designs were investigated and an optimum design, which facilitates better ventilation of the majority of the room, has been identifi ed. In summer, an inlet velocity has been recommended which achieves optimum environment inside the piggery meeting the pigs’ thermal comfort criteria with minimum power usage. During winter it became obvious that heating has to be used in all designs to be able to meet the pigs’ thermal comfort criteria.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Author version not held.
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Mechanical and Mechatronic Engineering
Date Deposited: 16 Sep 2010 05:45
Last Modified: 01 Sep 2014 02:52
Uncontrolled Keywords: computational fluid dynamics; pigs housing; forced ventilation; airflow pattern; optimization
Fields of Research : 09 Engineering > 0915 Interdisciplinary Engineering > 091501 Computational Fluid Dynamics
09 Engineering > 0913 Mechanical Engineering > 091307 Numerical Modelling and Mechanical Characterisation
09 Engineering > 0915 Interdisciplinary Engineering > 091502 Computational Heat Transfer
Socio-Economic Objective: B Economic Development > 83 Animal Production and Animal Primary Products > 8399 Other Animal Production and Animal Primary Products > 839901 Animal Welfare
Identification Number or DOI: 10.3992/jgb.4.4.113
URI: http://eprints.usq.edu.au/id/eprint/6486

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