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Full-Text Articles in Engineering

Quantification Of Site Layout And Filter Characteristics On Primary Filter Airflow Reduction On Commercial Swine Sites In Iowa, Benjamin Smith, Steven Hoff, Jay Harmon, Daniel Andersen, Jeffrey Zimmerman, John Stinn Jun 2019

Quantification Of Site Layout And Filter Characteristics On Primary Filter Airflow Reduction On Commercial Swine Sites In Iowa, Benjamin Smith, Steven Hoff, Jay Harmon, Daniel Andersen, Jeffrey Zimmerman, John Stinn

Agricultural and Biosystems Engineering Publications

Fresh air intake filtration is used on commercial swine breeding-gestation-farrowing farms to reduce the frequency of airborne infectious agents. For swine producers, porcine reproductive and respiratory syndrome virus (PRRSV), influenza A virus and Mycoplasma hyopneumoniae are considered the most economically challenging airborne pathogens. Reduced frequency of disease outbreaks has been attributed to retrofitting existing systems with filtration. Economic analysis of operating costs includes energy use, maintenance and replacement of filters. Filter replacement, the largest operational cost, is dependent on filter lifespan. However, limited data is available on filter lifespan and the rate of airflow reduction during the high dust-loading periods ...


Factors Affecting Pre-Filter Loading And Strategies To Manage Excessive Loading, Benjamin C. Smith, Steven J. Hoff, Jay D. Harmon, Daniel S. Andersen, Jeffrey J. Zimmerman, John P. Stinn Jan 2019

Factors Affecting Pre-Filter Loading And Strategies To Manage Excessive Loading, Benjamin C. Smith, Steven J. Hoff, Jay D. Harmon, Daniel S. Andersen, Jeffrey J. Zimmerman, John P. Stinn

Agricultural and Biosystems Engineering Conference Proceedings and Presentations

Ventilation air filtration is becoming a popular method to control airborne transmission of diseases on commercial sow farms. For example, air filtration can reduce the frequency of airborne outbreaks of porcine reproductive and respiratory syndrome virus (PRRSV). The capital investment is justified on the basis of diseases losses avoided, but better data on filter lifespan is needed to give producers a more complete understanding of all costs related to air filtration. In Objective 1 a 6-month (May-to-November) intensive study was done on commercial sow farms to determine factors affecting pre-filter lifespan. In Objective 2, a study into methods to prolong ...