Effective cowshed insulating and ventilation system parameters

Kavolėlis, B.; Šateikis, I.

doi:10.1016/j.enbuild.2004.04.001

Cited by 3 publications

(1 citation statement)

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“…Livestock must be healthy and have normal environmental conditions. One of the main conditions of an animal's well-being is its stable temperature status (Nilsson, 1992;Kavolelis, Sateikis, 2004;Pajumägi et al, 2008). The livestock, like all living organisms, is thermodynamically an open energy system with an internal heat source.…”

Section: Introductionmentioning

confidence: 99%

The Regime of Cowshed Environment and Ground Soils Temperature

Šadzevičius

Gurskis

Skominas

et al. 2018

Proccedings of International Scientific Conference "RURAL DEVELOPMENT 2017"

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The quantity and quality of milk depends not only on milking or milk storage equipment but also on cow's well-being. A cow lying on the animal bed gives a certain amount of heat, as intense heat exchanges occur on the ground through the floor. When lying, the blood in the cow's udder flows more intensely. It is known that for the formation of one liter of milk 500 liters of blood should flow through the cow's udder. The amount of milk is highly dependent from the micro-climate of the animal's bed, during the rest of the cow. The poorly installed or inappropriately designed bearing bed's floors do not meet the physiological needs of the animals from a thermal point of view, much more energy loss occurs. Often there are cases where cold-frozen animals suffer from various cold diseases and their productivity decreases. Therefore, no less attention should be paid to the cow's bed floor. The article analyses the temperature regime of the base of the cowshed and the ground of its environment during the regular period. The structure of the cowshed building is energy-heated, with bearing vault structures. Cows are kept tied up in re-bars. The floor of the cowshed room is installed on the ground. The ground floor temperature is fixed in 3 boreholes under the floor and also in 3 wells near the cowshed ground. Temperatures were fixed up to 6 meters deep. The fields of distribution of the base of the cowshed and its ground temperature are established during the regular period. Analysis of the temperature of the base of the cowshed and its environment showed that the ground temperature is influenced by the amount of heat released by the animal, which transmits itself not only to the room, but also to the base ground through the floor of the bearing bed. Since the bed's floor is installed on the ground, the amount of heat loss caused by the animal through the floor depends not only on the thermal properties of the floor, but also on the base ground temperature regime. Extremely intense heat exchanges through the base ground occur during the coldest period of the year.

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Section: Introductionmentioning

confidence: 99%

The Regime of Cowshed Environment and Ground Soils Temperature

Šadzevičius

Gurskis

Skominas

et al. 2018

Proccedings of International Scientific Conference "RURAL DEVELOPMENT 2017"

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Design of environmental quality evaluation system for livestock based on feedback information

Sun

Shen

et al. 2013

2013 Suzhou-Silicon Valley-Beijing International Innovation Conference

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Traditional environmental quality evaluation method for livestock uses water quality, soil quality, air quality as evaluating indicators. Livestock growth character is ignored. To aim at livestock adaptability on new condition, this paper presents an environmental quality evaluation system for livestock based on feedback information, combining traditional evaluating indicators and livestock growth character. This is a new idea and of great utility value and practical significance.

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Direct-Contact Air, Gravel, Ground Heat Exchanger in Air Treatment Systems for Cowshed Air Conditioning

2021

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This paper describes the analysis of the possibility of use of the direct-contact air, gravel, ground heat exchanger (acronym GAHE), patented at the Wroclaw University of Science and Technology, as a means of improving microclimate parameters in dairy cows’ barns. Different possibilities of introducing GAHE to the standard mechanical ventilation system of cowsheds have been proposed and investigated. Based on literature data, the required air parameters in the barns of dairy cows were determined and discussed. Computer simulations were carried out and the results obtained were compared to the baseline model. Year-round changes in microclimate parameters, especially air temperature, relative humidity, and THI index were investigated. The benefits of GAHE use were indicated. The possible increase in the minimum air volume of ventilation during the winter season and the decrease in the maximum values of this parameter in the summer were presented. Indications were made of the systems where the application of GAHE could be the most beneficial. A further research path has been proposed.

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Effective cowshed insulating and ventilation system parameters

Cited by 3 publications

References 1 publication

The Regime of Cowshed Environment and Ground Soils Temperature

The Regime of Cowshed Environment and Ground Soils Temperature

Design of environmental quality evaluation system for livestock based on feedback information

Direct-Contact Air, Gravel, Ground Heat Exchanger in Air Treatment Systems for Cowshed Air Conditioning

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