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Title: Comparison of two modeling methods for the prediction of degree−hours and heat−stress likelihood in a swine building
Authors: Παναγάκης, Παναγιώτης
Αξαόπουλος, Πέτρος Ι.
Item type: Journal article
Keywords: Swine housing;Energy requirements;Χοιροστάσιο;Ενεργειακές απαιτήσεις
Subjects: Agriculture
Issue Date: 8-Jan-2015
Publisher: American Society of Agricultural Engineers
Abstract: The use of a stepwise steady−state method based on the solution of time−dependent energy and mass balance equations, thus referred as the transient method, is proposed instead of the traditional steady−state method for predicting degree−hours. The proposed method makes use of real climatic, structural, and animal data. It is more accurate in calculating the heating and cooling needs and the microenvironment inside a growing−finishing swine building and in evaluating the hourly likelihood of swine heat−stress. More specifically, the heating degree−hours estimated using the proposed method were only 1.3% of those calculated with the steady−state method, whereas the cooling degree−hours estimated using the steady−state method were only 26.0% of those calculated with the proposed method. Growing−finishing swine potentially experienced minor, medium, and extreme heat−stress during “cold,” “mild,” and “hot” weather, respectively.
Language: English
Citation: Panagakis, P. and Axaopoulos, P. (2004). Comparison of two modeling methods for the prediction of degree−hours and heat−stress likelihood in a swine building. Transactions of the ASAE. 47(2). pp. 585-590. American Society of Agricultural Engineers.
Journal: Transactions of the ASAE
Type of Journal: With a review process (peer review)
Access scheme: Embargo
License: Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες
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