Thermal environment assessment and controller performance comparison for a wean-finish barn

dc.contributor.author Ramirez, Brett
dc.contributor.author Hoff, Steven
dc.contributor.author Hoff, Steven
dc.contributor.author Harmon, Jay
dc.contributor.department Agricultural and Biosystems Engineering
dc.date 2018-01-20T12:04:21.000
dc.date.accessioned 2020-06-29T22:35:14Z
dc.date.available 2020-06-29T22:35:14Z
dc.date.copyright Sun Jan 01 00:00:00 UTC 2017
dc.date.embargo 2018-01-18
dc.date.issued 2017-01-01
dc.description.abstract <p>The thermal environment (TE) inside swine facilities has a substantial impact on animal growth performance and facility energy usage; therefore, proper control and measurement are required to maintain the optimal TE that maximizes feed efficiency and consumes minimal resources. An inexpensive and novel network of 44 thermal environment sensor arrays (TESAs) capable of capturing the spatial and temporal distribution of the TE were deployed in August 2016 inside a two-room (designated as North; N and South; S), wean-finish barn (~1200 hd and 22 TESAs per room) and placed about 1.8 m above the slatted floor. All TESAs simultaneously measured and averaged 20 samples of dry-bulb temperature, back globe temperature, airspeed, and relative humidity at 1 min intervals. The objectives of this research were to: (1) summarize the TE observations from this monitoring period and (2) develop some preliminary analysis methods to quantitatively compare the TE in each room. Each room of the fully mechanically, power-tunnel ventilated facility featured independent TE control (i.e., fan, heater, inlet, and tunnel curtain operation) by a unique ventilation controller. A set point uniformity coefficient (γSP; binned by ambient temperature; ta) was used to assess ventilation controller performance and a two-sample (from random subsampling of ta bins) t-test was used to test if γSP in each room was statistically different. Results showed a statistically significant difference between N and S room γSP for ta bins8°C (p = 0.26; p = 0.07; p = 0.73; p = 0.31). This is a preliminary and novel approach to assessing ventilation controller performance and future approaches will need incorporate all parameters of the TE.</p>
dc.description.comments <p>This proceeding is published as Ramirez, Brett C., Steven J. Hoff, and Jay D. Harmon. "Thermal environment assessment and controller performance comparison for a wean-finish barn." In 2017 ASABE Annual International Meeting, Paper No. 162454577. American Society of Agricultural and Biological Engineers, 2017. <a href="http://dx.doi.org/10.13031" target="_blank">10.13031/aim.201700378</a>. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/abe_eng_conf/542/
dc.identifier.articleid 1541
dc.identifier.contextkey 11383607
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath abe_eng_conf/542
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/585
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/abe_eng_conf/542/2017_Harmon_ThermalEnvironment_.pdf|||Sat Jan 15 00:53:46 UTC 2022
dc.source.uri 10.13031/aim.201700378
dc.subject.disciplines Agriculture
dc.subject.disciplines Bioresource and Agricultural Engineering
dc.subject.keywords Facility
dc.subject.keywords Sensor array
dc.subject.keywords Swine
dc.subject.keywords Ventilation
dc.title Thermal environment assessment and controller performance comparison for a wean-finish barn
dc.type article
dc.type.genre conference
dspace.entity.type Publication
relation.isAuthorOfPublication c146c15d-23b3-4d1f-b658-9490f1bbc761
relation.isAuthorOfPublication 98b46d48-66a2-4458-9b42-8c4aa050664d
relation.isAuthorOfPublication 863ffed7-5274-46d6-95cc-47c7d0d5b6ab
relation.isOrgUnitOfPublication 8eb24241-0d92-4baf-ae75-08f716d30801
File
Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
2017_Harmon_ThermalEnvironment_.pdf
Size:
493.21 KB
Format:
Adobe Portable Document Format
Description: