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== Abstract ==
 
  
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The problem of uneven ventilation in pig houses must be solved to effectively improve the winter environmental quality of pig nurseries in cold regions. In this study, the airflow field and airflow uneven coefficients of pig nurseries with duct ventilation were simulated and calculated using computational fluid dynamics, and compared with pig nurseries with different duct diameters, inlet and outlet air velocities and air supply angles. The average relative error between the simulated and measured values was 12%. Comparison of simulation results and airflow uneven coefficients showed that the airflow uneven coefficients of the fences were reduced, and the airflow field was uniformly distributed with a duct diameter of 0.3 m, inlet and outlet air velocities of 1.5 and 2.0 m/s, respectively, and an air supply angle of 45°. These improvements resulted in a more homogeneous ventilation, which led to more uniform ventilation and contributed to discharging dirty air outdoors. Then the test pig nursery was modified based on the simulation and analysis results. Difference analyses were carried out between the control and the test pig nurseries. Comparative analyses showed the differences between the test data and the monitoring data were smaller, and the duct ventilation was more uniform, which was suitable for the healthy growth of piglets.OPEN ACCESS Received: 19/07/2024 Accepted: 10/10/2024
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<span id='_Hlk175065085'></span><div id="_Hlk177576425" class="center" style="width: auto; margin-left: auto; margin-right: auto;">
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<big>'''Analysis of Airflow Uniformity in Pig Nurseries Using Duct Ventilation in Northeast China'''</big></div>
  
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== Full document ==
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<pdf>Media:Draft_Sanchez Pinedo_438749939-5036-document.pdf</pdf>
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<span style="text-align: center; font-size: 75%;">Zhidong Wu<sup>1</sup><sup>, 2, 3</sup><sup>*</sup>, Kaixiang Xu<sup>1</sup>, Yanwei Chen<sup>1</sup>, Yonglan Liu<sup>1</sup>, and Meiqi Liu<sup>1</sup></span></div>
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1 School of Mechanical and Electrical Engineering, Qiqihar University, Qiqihar, 161006, China
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2 The Engineering Technology Research Center for Precision Manufacturing Equipment and Industrial Perception of Heilongjiang Province, Qiqihar, 161006, China
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3 Heilongjiang Academy of Agricultural Sciences, Harbin, 150086, China
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*Corresponding Author: Zhidong Wu. Email: [mailto:wzd139446@163.com wzd139446@163.com]
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Received: 19 July 2024; Accepted: 10 October 2024
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==ABSTRACT==
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The problem of uneven ventilation in pig houses must be solved to effectively improve the winter environmental quality of pig nurseries in cold regions. In this study, the airflow field and airflow uneven coefficients of pig nurseries with duct ventilation were simulatedand calculated using computational fluid dynamics, and compared with pig nurseries with different duct diameters, inlet and outlet air velocities and air supply angles. The average relative error between the simulated and measured values was 12%. Comparison of simulation results and airflow uneven coefficients showed that the airflow uneven coefficients of the fences were reduced, and the airflow field was uniformly distributed with a duct diameter of 0.3 m, inlet and outlet air velocities of 1.5 and 2.0 m/s, respectively, and an air supply angle of 45°. These improvements resulted in a more homogeneous ventilation, which led to more uniform ventilation and contributed to discharging dirty air outdoors. Then the test pig nursery was modified based on the simulation and analysis results. Difference analyses were carried out between the control and the test pig nurseries. Comparative analyses showed the differences between the test data and the monitoring data were smaller, and the duct ventilation was more uniform, which was suitable for the healthy growth of piglets.
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Keywords: Pig nursery; Airflow field; Numerical simulation; Duct Ventilation
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==Full Document==
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<pdf>Media:Wu_et_al_2024a_3067_TSP_RIMNI_56321.pdf</pdf>

Latest revision as of 10:57, 13 May 2025


ABSTRACT

The problem of uneven ventilation in pig houses must be solved to effectively improve the winter environmental quality of pig nurseries in cold regions. In this study, the airflow field and airflow uneven coefficients of pig nurseries with duct ventilation were simulatedand calculated using computational fluid dynamics, and compared with pig nurseries with different duct diameters, inlet and outlet air velocities and air supply angles. The average relative error between the simulated and measured values was 12%. Comparison of simulation results and airflow uneven coefficients showed that the airflow uneven coefficients of the fences were reduced, and the airflow field was uniformly distributed with a duct diameter of 0.3 m, inlet and outlet air velocities of 1.5 and 2.0 m/s, respectively, and an air supply angle of 45°. These improvements resulted in a more homogeneous ventilation, which led to more uniform ventilation and contributed to discharging dirty air outdoors. Then the test pig nursery was modified based on the simulation and analysis results. Difference analyses were carried out between the control and the test pig nurseries. Comparative analyses showed the differences between the test data and the monitoring data were smaller, and the duct ventilation was more uniform, which was suitable for the healthy growth of piglets.

Keywords: Pig nursery; Airflow field; Numerical simulation; Duct Ventilation

Full Document

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Document information

Published on 18/07/24
Accepted on 09/10/24
Submitted on 25/11/24

Volume 40, Issue 3, 2024
DOI: 10.23967/j.rimni.2024.10.056321
Licence: CC BY-NC-SA license

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