Abstract
A method of comparative evaluation of a centralized ventilation system using and not using an ejection unit is developed. The aerodynamics fundamentals are used to substantiate the efficiency of the ventilation with the use of the ejection unit as well as to substantiate its parameters. It is specified that the main parameter of the ejection unit is the ejection coefficient defining the rate of an increase of the air supply due to ejection or the same amount of the ejected air. The structural parameters of the unit, its components, depend on this parameter: nozzle, pressure, mixing chambers, and supply shaft. The analysis of the standard designs of the livestock houses shows that the total resistance of the network of the supply ventilation system makes 600–800 Pa. That is why the ejection coefficient of the units can be assumed to be equal to three. Furthermore, the energy costs are reduced 2.4 times. It is specified that the best conditions for admixing the warm air are created at the smallest angle between the ejecting and ejected air, i.e., with the following motion of the flows.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
Explore related subjects
Discover the latest articles and news from researchers in related subjects, suggested using machine learning.References
Permyakov, A.A., Nezavitin, A.G., and Litvina, L.A., Sanitarno-gigienicheskaya otsenka mikroklimata zhivotnovodcheskikh i ptitsevodcheskikh pomeshchenii: Uchebnoe posobie (Sanitary and Hygienic Assessment of the Microclimate of Livestock and Poultry Houses: Textbook), Novosibirsk: ITs Zolotoi kolos, 2016.
Kochish, I.I., Kalyuzhnyi, N.S., Volchkova, L.A., and Nesterov, V.V., Zoogigiena: Uchebnik (Zoohygiene: Textbook), Kochish, I.I., Ed., St. Petersburg: Izd. Lan’, 2008.
Ivanov, Yu.G. and Ponizovkin, D.A., Influence of the parameters of the air environment of the cowshed on physiological indicators, Mekh. Elektrif. Sel’sk. Khoz., 2015, no. 4, pp. 18–21.
Kuznetsov, A.A., Kuznetsova, O.V., and Tsepeleva, E.V., Metody kontrolya osnovnykh parametrov mikroklimata zhivotnovodcheskikh i ptitsevodcheskikh pomeshchenii (Methods for Controlling Main Parameters of Microclimate of Livestock and Poultry Houses), Ufa: BGAU, 2011.
Arkhiptsev, A.V. and Ignatkin, I.Yu., The automated microclimate system with heat recovery of exhaust air, Vestn. Nizhegorod. Gos. Inzh.-Ekon. Inst., 2016, no. 4, pp. 6–14.
Ivanov, Yu.G. and Ponizovkin, D.A., The system of compulsory ventilation of the barn for the warm season, Sel’sk. Mekh., 2015, no. 8, pp. 26–27.
Kirsanov, V.V., Murusidze, D.N., Nekrashevich, V.F., Shevtsov, V.V., and Filonov, R.F., Mekhanizatsiya i tekhnologiya zhivotnovodstva: Uchebnik (Mechanization and Technology of Livestock: Textbook), Moscow: INFRA-M, 2014.
Mishurov, N.P. and Kuzmina, T.N., Energosberegayushchee oborudovanie dlya obespecheniya mikroklimata v zhivotnovodcheskikh pomeshcheniyakh (Energy-Saving Equipment for Providing Microclimate in Cattle-Breeding Premises), Moscow: Rosinformagrotekh, 2004.
Lapitskii, A.G., Use of electric heaters of information radiation “Teplofon” for heating of rural residential and cattle-breeding premises, Extended Abstract of Cand. Sci. (Eng.) Dissertation, Krasnoyarsk, 2008.
Primenenie IK plenki v zhivotnovodstve: Informatsionnyi listok (Application of IR film in Livestock: Information Sheet), Odessa: NPK Monokristal, 2013.
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © G.B. Mamedov, E.S. Mamedov, 2017, published in Rossiiskaya Sel’skokhozyaistvennaya Nauka, 2017, No. 5, pp. 58–60.
About this article
Cite this article
Mamedov, G.B., Mamedov, E.S. Method for estimating and analyzing an increase of efficiency of the ventilation system in a livestock house. Russ. Agricult. Sci. 43, 516–518 (2017). https://doi.org/10.3103/S106836741706009X
Received:
Published:
Issue Date:
DOI: https://doi.org/10.3103/S106836741706009X