NIOSHTIC-2 Publications Search

Development of a simulation model for a ventilation system for a swine confinement.

Zhang L; Smith TF; O'Shaughnessy PT
Livestock Environment VI: Proceedings of the 6th International Symposium, May 21-23, 2001, Louisville, Kentucky, R. R. Stowell, R. Bucklin, and R. W. Bottcher, eds., St. Joseph, MI: American Society of Agricultural Engineers, 2001 May; :293-300
The objective of this study is to develop a simulation model of a ventilation system for a modern swine confinement. The confinement is divided into two zones: the room where the pigs reside and the pit that stores the waste. Two fans located in the side wall of the room and one fan located in the end wall of the pit are used to control the indoor air quality (IAQ) within the confinement. IAQ in this study addresses thermal and pollutant factors. For each zone, the conservation of mass and energy equations are written. The conservation of mass equations apply for dust, ammonia, and water vapor concentration. The conservation of energy describes the air temperature of the zones. The equations contain heat generation terms for thermal energy due to lights, heaters, and pigs, and mass source terms due to dust, water vapor, and ammonia. Relations for the generation terms are presented. An icon-based software is used to solve the system of equations that represent the IAQ models. Results of temperature, humidity, and concentrations of ammonia and dust are obtained from the simulation model under different conditions. By successfully examining the example cases, further investigations are warranted on larger-scale models having more complexity, components, control algorithms, and applications.
Agricultural industry; Agriculture; Air flow; Air quality control; Analytical models; Animal husbandry; Ventilation; Ventilation systems; Mathematical models; Simulation methods; Control technology; Indoor air pollution; Industrial ventilation; Industrial wastes; Indoor environmental quality; Author Keywords: Simulation; Ventilation; Swine; Indoor Air Quality
Department of Mechanical Engineering, The University of Iowa, Seamans Building, Iowa City, Iowa 52242-5000
Publication Date
Document Type
Conference/Symposia Proceedings
Stowell RR; Bucklin R; Bottcher RW
Funding Amount
Funding Type
Fiscal Year
Identifying No.
Priority Area
Research Tools and Approaches: Control Technology and Personal Protective Equipment
Source Name
Livestock Environment VI: Proceedings of the 6th International Symposium 2001, May 21-23, 2001, Louisville, Kentucky
Performing Organization
Department of Occupational and Environmental Health, Institute for Rural and Environmental Health, The University of Iowa, Iowa City, Iowa 52242
Page last reviewed: March 3, 2021
Content source: National Institute for Occupational Safety and Health Education and Information Division