Simulation of Air Quality and Operating Cost to Ventilate Swine Farrowing Facilities in Midwest U.S. During Winter

Details

• Personal Author:
  Altmaier R ; Anthony, T. Renée ; Gassman R ; Jones SM ; Park JH ; Peters TM
• Description:
  We have developed a time-dependent simulation model to estimate in-room concentrations of multiple contaminants, i.e., ammonia (NH3), carbon dioxide (CO2), carbon monoxide (CO), and dust, as a function of increased ventilation with filtered recirculation for swine farrowing facilities. Energy and mass balance equations were used to simulate the indoor air quality (IAQ) and operating cost for a variety of ventilation conditions over a three-month winter period for a facility located in the Midwest U.S., using simplified and real-time production parameters, and results were compared to field data. The model was improved by minimizing the sum of squared errors (SSE) between modeled and measured NH3 and CO2. After optimizing NH3 and CO2, other IAQ results from the simulation were compared to field measurements using linear regression. For NH3, the coefficient of determination (R2) for simulation results and field measurements improved from 0.02 with the original model to 0.37 with the new model. For CO2, the R2 for simulation results and field measurements was 0.49 with the new model. When the makeup air was matched to hallway air CO2 concentrations (1,500 ppm), simulation results showed the smallest SSE. With the new model, the R2 for other contaminants were 0.34 for inhalable dust, 0.36 for respirable dust, and 0.26 for CO. Operation of the air cleaner decreased inhalable dust by 35% and respirable dust concentrations by 33%, while having no effect on NH3 and CO2, in agreement with field data, and increasing operating cost by $860 (58%) for the three-month period. [Description provided by NIOSH]
• Subjects:
  Agriculture Air Pollutants, Occupational Air Pollution, Indoor Carbon Dioxide Dust Farmers Livestock Occupational Health Safety Ventilation
• Keywords:
  Airborne Particles Air Contaminants Author Keywords: Ammonia Carbon Dioxide Dusts IAQ Indoor Air Quality Inhalable Dust Livestock Industry Respirable Dust Simulation Methods Simulink Ventilation Systems

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• ISSN:
  2151-0032
• Document Type:
  Text
• Funding:
  Cooperative Agreement
• Genre:
  Journal Article
• Place as Subject:
  Indiana ; Iowa ; OSHA Region 5 ; OSHA Region 7
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  465-477
• Volume:
  60
• Issue:
  2
• NIOSHTIC Number:
  nn:20050303
• Citation:
  Trans ASABE 2017 Mar; 60(2):465-477
• Contact Point Address:
  T. Renée Anthony, CPHB, Suite 333, 145 N. Riverside Drive, Iowa City, IA 52246
• Email:
  renee-anthony@uiowa.edu
• Federal Fiscal Year:
  2017
• NORA Priority Area:
  Agriculture, Forestry and Fishing
• Performing Organization:
  University of Iowa, Iowa City
• Peer Reviewed:
  True
• Start Date:
  20010930
• Source Full Name:
  Transactions of the American Society of Agricultural and Biological Engineers
• End Date:
  20270929
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:99c43370d0468186d66d526d9d524f611fb1fc8c4adcf5a5dcfb64fb307d3bcbb334114acb2487ecc105d96f52b89415a69fa5f26b1189392416697c60903afa
• Download URL:
  https://stacks.cdc.gov/view/cdc/210711/cdc_210711_DS1.pdf
• File Type:
  [PDF - 616.37 KB ]