Wyniki wyszukiwania - BazTech

1

Analysis of trend changes in degree-day values of heating and cooling: broiler breeding case

Yucel A., Atilgan A., Erdem N., Oz H.

Infrastruktura i Ekologia Terenów Wiejskich

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2017

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nr II/2

645--660

EN

An ideal broiler house should be designed to minimize the effects of weather changes and to keep indoor conditions at the comfort temperature of the animals. In this case, this should be done with minimum cost and possible lowest operating costs. Degree-day methods are used in order to have knowledge of the energy need of any structure. With this method, the measured values or meteorological data can be used to give information about the heating and cooling energy quantities of structures. Depending on the climate change in recent years, the changes need to be examined that have taken place in order to provide optimum comfort in animal barn. Isparta province and districts were selected as the study area. The longterm average daily temperature values are used from meteorological stations of the selected region. The heating and cooling degree day values were calculated for selected balance temperatures in broiler breeding. Linear Regression Analysis and Spearman Rank Correlation Test were conducted to determine the changes of these values due to climate change. In conclusion, it was determined that there were statistically significant trends at 5% significance level in Egirdir (21°C), Isparta (31-29-25 and 23°C), Kasimlar (18°C), Senirkent (31-29-25-23 and 21°C), Sutculer (all selected balance temperature values) and Yalvac (31-29-25-23 and 21°C) in terms of heating degree-day values, and in Atabey (29-25-23-21 and 18°C), Barla (25-23 and 21°C), Isparta (23-21 and 18°C), Senirkent (29- 25-23-21 and 18°C), Sutculer (29-25-23-21 and 18°C), Sarkikaraagac (25-23-21 and 18°C), Uluborlu (25-23-21 and 18°C) and Yalvac (25-23-21 and 18°C) in terms of cooling degree-day values. As a result, it has been concluded that more energy consumption will be a concern for heating and cooling of the broiler house that will be built in the province of Isparta.

2

Wykorzystanie pożytecznych mikroorganizmów jako jednej ze strategii redukcji gazów i odorów w chowie drobiu

Pruska Ż.

Zeszyty Naukowe. Mechanika / Politechnika Opolska

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2014

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z. 104

173-176

EN

Rural environment together with industrialized animals and birds husbandry is an active manufacturer of large amounts of harmful carbon dioxide gases, hydrogen sulphide and ammonium. Content of above substances is strictly connected with odour intensification. They have negative effect on natural environment, human life, as well as effects on livestock manufacturing. Thus, different strategies of their intensification are being constantly searched. Herein article presents though, the application of effective microorganisms as the alternative in the struggle with such worldwide problem in broiler breeding. Here the useful microorganisms influence the suppression of droppings breakdown processes, causing ecological deodorization, decreasing the odours emission.

3

Ocena możliwości stosowania wentylacji naturalnej w budynkach dla drobiu przy wysokich temperaturach zewnętrznych - analiza teoretyczna

Kuczyński T., Gniazdowski J.

Problemy Inżynierii Rolniczej

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2003

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R. 11, nr 4

105--112

PL

Przeprowadzono teoretyczną analizę skuteczności działania wentylacji naturalnej w warunkach wysokich temperatur w zależności od prędkości wiatru. Przedstawione w parcy wyniki badań symulacyjnych wskazują, że prawidłowo zaprojektowana wentylacja naturalna może w okresie letnich upałów zapewnić poprawne warunki termiczne w budynku dla brojlerów.

EN

Paper presented a theoretical analysis of natural ventilation efficiency in a broiler house at high ambient temperatures in the summertime. Continous wide ridge opening and large openings in two sidewalls of the building were provided for the airflow. The simulation aimed at evaluating the effect of various ambient temperatures and wind velocities on air exchange intensity and the difference between inside and outside air temperatures. Another simulation object was to broiler building. The results of study suggested that properly designed natural ventilation should provide desirable thermal conditions in a broiler house even at high summer temperatures. Along all the duration of high temperatures in summer, the microenvironment temperature inside naturally ventilated building is supposed to be even slightly lower than in a building with mechanical ventilation. Potential problem could arise in the periods of high air temperatures joined with windless conditions, particularly lasting for a few hours.

4

Ocena możliwości stosowania wentylacji naturalnej w budynkach dla drobiu przy wysokich temperaturach zewnętrznych - badania empiryczne

Gniazdowski J., Kuczyński T.

Problemy Inżynierii Rolniczej

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2003

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R. 11, nr 4

113--120

PL

Zweryfikowano empirycznie wyniki analizy teoretycznej skuteczności działania wentylacji naturalnej w budynkach dla brojlerów w warumkach wysokich temperatur, a także porównano skuteczność działania wentylacji naturalnej do mechanicznej. Przedstawione w pracy wyniki badań generalnie potwierdzają, wyniki badań symulacyjnych i wskazują, że w okresie letnich upałów wentylacja naturalna zapewnia warunki termiczne porównywalne do tych, jakie są możliwe do uzyskania przez wentylację mechaniczną.

EN

Paper presents an attempt to empirical studying the efficiency of natural ventilation in broiler houses during high ambient temperatures in the summertime. Moreover, the study aimed at comparing the microenvironment in similar buildings with natural and mechanical ventilation, under similar weather and technological conditions. The effect of various ambient temperatures and wind velocities on differences between inside and outside temperature was also evaluated. Obtained results suggest that the natural ventilation should provide the proper thermal conditions in a broiler house at high air temperatures in the summer. Experimental data generally confirmed the results of simulation study indicating that well designed natural ventilation system should protect the birds against thermal stress to similar degree like mechanical ventilation.