24-Hour Microclimate Conditions in Livestock Building

Abstract

Ag ri cu lt ura l Eng in eer i ng w w w . w i r . p t i r . o r gThe size of all sensible heat balance components in livestock building varies in time, because it depends on time-varying weather factors. On the example of two buildings, sensible heat balance was shown on a daily basis. Measurements carried out in winter and spring in two livestock buildings with usable attics included measurements of air temperature and humidity inside and outside, air velocity in ventilation channels, and wind speed. Measuring devices were designed to record the results of measurements at intervals of 300s. During each such time interval, sensible heat losses by ventilation, heat losses by permeation through the barrier construction, and the amount of sensible heat produced by the animals were calculated. The results of measurements were shown in graphs. The study is important for the development of animal livestock building.

Technology of Microclimate Regulation in Organic and Energy-Sustainable Livestock Production

“…The indicators of a spring day (27 April 2013) in the average European climatic zone were based on data derived from the recent study of Glusky et al in 2019 [8] in a milk cattle building in the town of Komarow (Poland). Some data were complemented and elaborated by the authors to simulate brighter possible extreme conditions of the environment to test the proposed algorithm.…”

“…The microclimatic parameters and indices are based on the data recorded from a livestock building on 27 April 2013 in Komarow (Poland) [8], with additions and simulations of the authors.…”

“…Among the accumulated knowledge in the literature, there are quite a number of approaches to analyze strategies for modeling the management of the microclimate in livestock buildings. For example, humidity balance and heat-exchange models are used to simulate and analyze the microclimate conditions in animal and poultry housing in current research [7], and recent studies [8,9] have used sensible heat balance justification models. However, [7] states that in the most frequently ventilated periods, predictions of indoor temperature are extremely difficult.…”