Automated Control Logic for Naturally Ventilated Agricultural Structures

Date
2004-01-01
Authors
Hoff, Steven
Hoff, Steven
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Abstract

An innovative control strategy for a naturally ventilated (NV) swine finishing building was evaluated. Extensive monitoring of an existing NV-controlled swine finishing building indicated that the building temperature control was .3.C of set-point for less than 50% of the time, with 20% of the time greater than .6.C. Based on the experience gained from this monitoring, the building was modified to accommodate testing and development of a new NV control logic. Using the improved NV control logic, the building temperature was .2.C of the set-point for 91% of the time, and, .3.C for 97% of the time for a wide range of cold and mild weather conditions with no supplemental heater use. A routine using inside relative humidity feedback was used to preserve indoor air quality levels through a series of purging routines.

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<p>This article is from <em>Applied Engineering in Agriculture </em>20, no. 1 (2004): <a href="http://elibrary.asabe.org/abstract.asp?aid=15682&t=3&dabs=Y&redir=&redirType=" target="_blank">47–56</a>.</p>
Keywords
Natural Ventilation, Control, Indoor Climate
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