Site, Environmental, and Airflow Characteristics for Mono-Slope Beef Cattle Facilities in the Northern Great Plains

Autor:	Richard R. Stowell, Rajibul Hasan Al Mamun, Erin L. Cortus, Ferouz Y. Ayadi, Scott D. Cortus, Kris D. Kohl, R. E. Nicolai, Beth E. Doran, Stephen H. Pohl, Mindy J. Spiehs
Rok vydání:	2015
Předmět:	Hydrology Meteorology Air changes per hour Airflow Biomedical Engineering Soil Science Forestry Beef cattle Wind speed North wall Environmental monitoring Environmental science Agronomy and Crop Science Food Science
Zdroj:	Transactions of the ASABE. :123-135
ISSN:	2151-0040 2151-0032
Popis:	In conjunction with an emission monitoring study, long-term airflow and environmental data were collected from select pens in each of four regional producer owned and operated mono-slope beef cattle facilities in the Northern Great Plains. The barns were oriented east-west, with approximate depths of 30 m in the north-south dimension, 82 to 333 m widths in the east-west dimension, and south and north wall eave heights of 8 and 5 m, respectively. The north wall curtain openings were adjusted by the producers seasonally or daily, and classified as open (>1.5 m, mean ±SD = 2.1 m ±0.1 m) or closed ( -1 south wind, there were approximately 10 to 70 air changes per hour (ACH) for closed conditions in the four barns, and 160 ACH with open curtains. The average relationships between airflow through the pen volume and ambient wind velocity were 7 and 33 ACH (m s -1 ) -1 for closed and open conditions, respectively. These data assist producers in management decisions, and are required for aerial pollutant estimation for this type of beef cattle facility in the Northern Great Plains.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::bf2708c695dd4584009ad4884e66320f https://doi.org/10.13031/trans.58.10800 Zobrazit plný text záznamu