DEVELOPMENT AND ANALYSIS OF A NEW APPROACH FOR SIMPLIFIED DETERMINATION OF THE HEATING AND THE COOLING LOADS OF LIVESTOCK BUILDINGS
Pig farming is a sector of animal husbandry, the development of which is great attention. The pork market occupies a large share in the trade in animal products. In the conditions of they do competition more efforts are made to improve the quality and reduce the cost of production. To achieve this goal, work is being done in several areas – development and expansion of the gene pool, improvement of the living environment in the premises for animal husbandry, reduction of energy costs. Along with the development of feeding technologies, it is necessary to create a suitable microclimate in the premises, in which the animals to realize their productive potential, which in turn is directly related to the use of heating and cooling systems. The design of these systems for both existing and new buildings is carried out according to generally accepted methodologies, which in turn require time for calculation and use of specialized software. The methodologies for determining the loads for heating and cooling of livestock buildings, in accordance with the current legislation in the Republic of Bulgaria, are compared with a new method proposed in this publication. The possibility to consider a livestock building from the point of view of the theory of heat exchange allows the use of the basic differential equations describing the dynamic interaction of the building with the environment. This description would be complete and complex to implement. Therefore, the method of dimensional analysis is used, which is based on generalized indicators, when fulfilling certain criteria of similarity. The aim of the new methodology is to shorten the design time and allow the rapid sizing of heating and cooling systems in livestock buildings. In developing the new methodology, the task was the proposed new approach to summarize the interaction of all physical parameters affecting the heat exchange between the building and the surrounding air, allowing to take into account changes in external (air temperature, wind speed, solar radiation intensity) and internal factors (heat given off by farm animals, lighting, process equipment and processes) affecting the heat exchange between the building and the ambient air
Beloev, H. I., Terziev, A. K., Iliev, I. K., Ivanov, M. P. (2020). Energy efficiency improvement in farming equipment, for agricultural holdings. IOP Conference Series: Materials Science and Engineering, 977, 012011. doi: https://doi.org/10.1088/1757-899x/977/1/012011
NAREDBA No. 44 ot 20.04.2006 g. za veterinarnomeditsinskite iziskvaniya km zhivotnovdnite obekti. Available at: https://www.mzh.government.bg/odz-stzagora/Libraries/%D0%9D%D0%B0%D1%80%D0%B5%D0%B4%D0%B1%D0%B8/Naredba_44-20_04_2006.sflb.ashx
Denev, I., Tsankov, P., Antonov, I. (2016). CFD simulation of the influence of air conditioner on the turbulence intensity in residential room. Proceedings of University of Ruse, 55 (1.2), 97–101. Available at: http://conf.uni-ruse.bg/bg/docs/cp16/1.2/1.2-18.pdf
Andonov, K., Daskalov, P., Martev, K. (1989). Microclimate system for livestock building with controlled natural ventilation. Agricultural Engineering, 2, 55–62.
Mós, J. V. do N., Nascimento, S. T., Murata, L. S., dos Santos, V. M., Neto, A. J. S., de Oliveira, E. M. et. al. (2020). Thermal comfort of sows in free-range system in Brazilian Savanna. Journal of Thermal Biology, 88, 102489. doi: https://doi.org/10.1016/j.jtherbio.2019.102489
Firfiris, V. K., Martzopoulou, A. G., Kotsopoulos, T. A. (2019). Passive cooling systems in livestock buildings towards energy saving: A critical review. Energy and Buildings, 202, 109368. doi: https://doi.org/10.1016/j.enbuild.2019.109368
Kostov, P., Petrova, R., Atanasov, K., Krastev, N. (2009). Energy consumption and its influence on the environment and eco-systems. Proceedings of the C&SEE International Solid Waste Management Symposium. Vienna, 107–112.
Schauberger, G., Hennig-Pauka, I., Zollitsch, W., Hörtenhuber, S. J., Baumgartner, J., Niebuhr, K. et. al. (2020). Efficacy of adaptation measures to alleviate heat stress in confined livestock buildings in temperate climate zones. Biosystems Engineering, 200, 157–175. doi: https://doi.org/10.1016/j.biosystemseng.2020.09.010
Trifonov, A. (2016). Vliyanie na mikroklimata vrhu fiziologichnoto sstoyanie i produktivnostta na zhivotnite. Zemedelska tehnika. Available at: http://zemedelskatehnika.com/влияние-на-микроклимата-върху-физиол/
Petkova-Slipets, R., Yordanov, K., Zlateva, P. (2020). A Comparative Thermal Analysis of Walls Composed of Traditional and Alternative Building Materials. Civil and Environmental Engineering, 16 (2), 388–395. doi: https://doi.org/10.2478/cee-2020-0039
NAREDBA E-RD-04-05/8.09.2016 g. Za opredelyane na pokazatelite za razhod na energiya, energiynite harakteristiki na predpriyatiya, promishleni sistemi i sistemi za vnshno izkustveno osvetlenie, kakto i za opredelyane na usloviyata i reda za izvrshvane na obsledv. Ministry of Energy of the Republic of Bulgaria. Available at: https://www.me.government.bg/bg/library/naredba-e-rd-04-05-8-09-2016-g-za-opredelyane-na-pokazatelite-za-razhod-na-energiya-energiinite-harakteristiki-na-predpriyatiya-promishleni-sistemi-i-sistemi-za-vanshno-izkustveno-osvetlenie-kakto-i-za-opredelyane-na-usloviyata-i-reda-za-izvarshvane-na-obsledv-592-c78-m1517-3.html
Terziev, A., Stoyak, V., Ushakov, V., Brazhanova, D., Suleimanov, S. (2021). Analysis of the opportunities for improving energy efficiency in public buildings. IOP Conference Series: Materials Science and Engineering, 1019, 012021. doi: https://doi.org/10.1088/1757-899x/1019/1/012021
Najjar, M. K., Figueiredo, K., Hammad, A. W. A., Tam, V. W. Y., Evangelista, A. C. J., Haddad, A. (2019). A framework to estimate heat energy loss in building operation. Journal of Cleaner Production, 235, 789–800. doi: https://doi.org/10.1016/j.jclepro.2019.07.026
InstalSistem 4 OVK. Available at: http://software.guerov.org/design-software-menu/design-software-menu/instalsystem-ovk.html
Softuer za proektirane na OVK sistemi – HK Select. Available at: https://www.hoval.bg/produki/hk-select-hvacsystemdesign-software-for-hvac-engineers
Nenov, C., Dinev, D. (1986). Directory of hygiene and construction in industrial livestock. Sofia.
Renaudeau, D., Collin, A., Yahav, S., de Basilio, V., Gourdine, J. L., Collier, R. J. (2012). Adaptation to hot climate and strategies to alleviate heat stress in livestock production. Animal, 6 (5), 707–728. doi: https://doi.org/10.1017/s1751731111002448
Wen, X., Wu, W., Fang, W., Tang, S., Xin, H., Xie, J., Zhang, H. (2019). Effects of long-term heat exposure on cholesterol metabolism and immune responses in growing pigs. Livestock Science, 230, 103857. doi: https://doi.org/10.1016/j.livsci.2019.103857
Gonzalez-Rivas, P. A., Chauhan, S. S., Ha, M., Fegan, N., Dunshea, F. R., Warner, R. D. (2020). Effects of heat stress on animal physiology, metabolism, and meat quality: A review. Meat Science, 162, 108025. doi: https://doi.org/10.1016/j.meatsci.2019.108025
Huynh, T. T. T., Aarnink, A. J. A., Gerrits, W. J. J., Heetkamp, M. J. H., Canh, T. T., Spoolder, H. A. M. et. al. (2005). Thermal behaviour of growing pigs in response to high temperature and humidity. Applied Animal Behaviour Science, 91 (1-2), 1–16. doi: https://doi.org/10.1016/j.applanim.2004.10.020
Pyykkönen, M. (1992). The use of heated models to describe the thermal environment in shelters for farm animals. Agricultural and Food Science, 1 (6), 539–545. doi: https://doi.org/10.23986/afsci.72466
Quiniou, N., Noblet, J., van Milgen, J., Dubois, S. (2001). Modelling heat production and energy balance in group-housed growing pigs exposed to low or high ambient temperatures. British Journal of Nutrition, 85 (1), 97–106. doi: https://doi.org/10.1079/bjn2000217
Naredba No. 7 ot 2004 g. za energiyna efektivnosti na sgradi (zagl. izm. - DV, br. 85 ot 2009g., izm. – dv, br. 27 ot 2015 g., v sila ot 15.07.2015 g.). Available at: https://www.mrrb.bg/static/media/ups/articles/attachments/Наредба%207%20за%20енергийна%20ефективност%20на%20сградиb191b6b8919debd538c09ed26f9c9d25.pdf
Naredba No. 15 ot 28 yuli 2005 g. za tehnicheski pravila i normativi za proektirane, izgrazhdane i eksploatatsiya na obektite i sorzheniyata za proizvodstvo, prenos i razpredelenie na toplinna energiya. Available at: https://www.mrrb.bg/static/media/ups/articles/attachments/cb8c6f276e53468170a8c6fea21e224d.pdf
Krasteva, A., Koev, K., Peev, V. (2008). Modeling of the heat losses and the consumed heat for a definite site. Scientific Papers of the University of Ruse, 47 (9), 168–173. Available at: http://conf.uni-ruse.bg/bg/docs/cp/9/9-35.pdf
Stamov, S. (1990). Guide to Heating, Ventilation and Air-Conditioning, Part 1. Technology. Sofia.
Cooper, K., Parsons, D. J., Demmers, T. (1998). A Thermal Balance Model for Livestock Buildings for use in Climate Change Studies. Journal of Agricultural Engineering Research, 69 (1), 43–52. doi: https://doi.org/10.1006/jaer.1997.0223
Turnpenny, J. R., McArthur, A. J., Clark, J. A., Wathes, C. M. (2000). Thermal balance of livestock. Agricultural and Forest Meteorology, 101 (1), 15–27. doi: https://doi.org/10.1016/s0168-1923(99)00159-8
Turnpenny, J. R., Wathes, C. M., Clark, J. A., McArthur, A. J. (2000). Thermal balance of livestock. Agricultural and Forest Meteorology, 101 (1), 29–52. doi: https://doi.org/10.1016/s0168-1923(99)00157-4
Madrid, C. N., Alhama, F. (2006). Discrimination: A fundamental and necessary extension of classical dimensional analysis theory. International Communications in Heat and Mass Transfer, 33 (3), 287–294. doi: https://doi.org/10.1016/j.icheatmasstransfer.2005.11.002
Huntley, H. (1967). Dimensional analysis. Dover, 158.
Kostov, P., Atanasov, D. (2002). Similarity numbers for combustion of gas in a restricted rotary stream by diffusion. Mechanics of machines, 6, 9–10.
Skorniakov, V. (2019). On asymptotic normality of certain linear rank statistics. Statistics & Probability Letters, 145, 63–73. doi: https://doi.org/10.1016/j.spl.2018.08.016
Xiang, J. X. (2019). Estimation of minimum and maximum correlation coefficients. Statistics & Probability Letters, 145, 81–88. doi: https://doi.org/10.1016/j.spl.2018.08.010
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