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اصلاح الگوی جریان هوای داخل گاوداری‌های شهر سلماس از طریق مداخله در معماری با هدف بهبود وضعیت تهویه

نوع مقاله : مقاله پژوهشی

نویسندگان

1 استادیار، دانشکده مهندسی معماری و شهرسازی، دانشگاه تربیت دبیر شهید رجایی، تهران، ایران.

2 دانشجوی کارشناسی ارشد معماری، گروه معماری، واحد سوادکوه، دانشگاه آزاد اسلامی، سوادکوه، ایران.

چکیده

مشاهدات نشان می‌دهند که عمده ی گاوداری‌های ساخته شده در ایران به صورت سوله بوده و در فرایند طراحی آن‌ها، چندان توجهی به وضعیت تهویه (با وجود نیاز فراوان) و الگوی گردش جریان هوای داخل سوله ها نمی‌شود و این امر مشکلات فراوانی در زمینه آسایش دام‌ها بدنبال خواهد داشت. هدف اصلی مقاله، بهبود وضعیت تهویه داخلی سوله‌های نگهداری گاو، از طریق معماری است به نحوی که جریان هوای مطلوب و یکنواختی در سراسر محیط گاوداری در تراز دام‌ها برقرار شود. با توجه به ماهیت موضوع، پژوهش حاضر یک پژوهش میان رشته‌ای بوده و روش تحقیق آن ترکیبی است و راهبردهای تحقیق تجربی، شبیه‌سازی و پژوهش موردی را مورد استفاده قرار می‌دهد. در مرحله اول پس از مشخص شدن جامعه آماری (گاوداری‌های منطقه سرد)، وضعیت موجود آن‌ها به صورت تجربی مورد بررسی قرار گرفت و پس از اثبات مسئله و یافتن متغیرهای تحقیق، اقدام به پیشنهاد طرح اولیه (نمونه موردی) و مدل نمودن آن شد. مدل موردنظر، ابتدا با پیش پردازشگر گامبیت (Gambit) شبکه‌بندی و سپس با استفاده از نرم‌افزار فلوئنت (Fluent) به روش CFD شبیه‌سازی گردید و مداخلاتی در معماری آن صورت گرفت و سپس اقدام به تحلیل و نتیجه‌گیری شد. نتایج نشان می‌دهند که با مداخلاتی مختصر در معماری سوله و موقعیت بازشوها، می‌توان الگوی جریان هوای داخل آن را چنان بهبود داد تا ضمن برقراری موثر جریان هوای داخلی و کاهش اختلاف دمای میان نقاط مختلف سوله و نیز کاهش نوسانات دمایی، مصرف انرژی را نیز کاهش داد.

چکیده تصویری

اصلاح الگوی جریان هوای داخل گاوداری‌های شهر سلماس از طریق مداخله در معماری با هدف بهبود وضعیت تهویه

تازه های تحقیق

- موقعیت بازشوها، دمنده‌ها و مکنده‌ها در معماری فضای گاوداری‌های شهر سلماس با هدف بهبود وضعیت تهویه.
- روش تحقیق ترکیبی (مشاهدات تجربی، شبیه‌سازی و پژوهش موردی)؛ شبیه‌سازی با استفاده از نرم‌افزارهای گمبیت و فلوئنت و با روش CFD و مداخله در شبیه‌سازی‌ها.
- یکنواخت‌سازی جریان هوای داخل سوله‌ها با انجام مداخلات محدود در معماری.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Modifying the air flow pattern in cattle barns of Salmas city through architectural intervention to improve the ventilation

نویسندگان [English]

  • Omid Rahaei 1
  • Mehri Barehyun 2

1 Assistant Professor, School of Architecture and Urban Design, Shahid Rajaee Teacher Training University, Tehran, Iran.

2 M.A. Sudent in Architecture, Department of Architecture, Savadkuh Branch, Islamic Azad University, Savadkuh, Iran.

چکیده [English]

Extended Abstract
Background and Objectives: Observations show that most of the cattle barns built in Iran are in the form of sheds, and during their design phase, limited consideration is given to ventilation conditions, despite the significant need for it, as well as the air circulation patterns within the barns. This oversight leads to numerous issues in the field, with the well-being of the animals subsequently affected. The main goal of the article is to improve the ventilation of in cattle barns, through architecture, in such a way that the optimal and uniform air flow is established throughout the environment, at the level where animals live. According to the nature of the subject, the current research is an interdisciplinary research and a hybrid research method is applied using experimental research strategies, simulation and case study. In the first stage, after identifying the statistical population (cattle barns in the cold region), their current situation was investigated empirically, and after scrutinizing the problem and finding the research variables, the initial plan (case sample) was proposed and modeled. The desired model was first meshed with Gambit, subsequently undergoing simulation via the FLUENT software employing the CFD methodology. Adjustments were introduced to its architectural design, followed by the analysis and formulation of conclusions. The results show that, by making minimal architectural changes to the barn and the openings, it is feasible to enhance the airflow pattern within it. This can effectively establish internal air circulation, diminish temperature disparities among various barn sections, minimize temperature fluctuations, and lower energy consumption. 
Methods: Considering its interdisciplinary nature, the research employs a hybrid approach that combines experimental research, simulation, and case study strategies. The research encompasses all cattle barns in cold climates as the statistical population. The chosen case study focuses on a cattle barn designed for approximately 250 cows in the city of Salmas. The research findings indicate that enhancing the architectural layout and positioning of openings, along with their primary composition, can lead to improved ventilation in cattle barns and a more uniform airflow within them. The research utilizes numerical simulation, specifically in the case of a Salmas city cattle barn, validated previously through Olsen’s experimental methods (Rahaei, 2014, 2013). The validation of this method is well-established and is based on Nagano’s (1990) validated technique, utilizing a zero-equation method and model. The numerical calculations are conducted using the computational fluid dynamics method, employing the Gambit preprocessor for meshing and Fluent software for network analysis.
Findings: Considering the research goal of enhancing airflow and subsequently ventilation in cattle barns in climates similar to Salmas city (the cold climate), various scenarios of a common case study were examined in a two-dimensional manner. Initially, longitudinal sections were analyzed, followed by transverse sections of the cattle barn. In all scenarios, the energy equation was activated. The optimal condition involves a smooth and favorable inward airflow through side windows. Afterward, this airflow undergoes conditioning as it passes through the radiators installed in the windows and, if necessary, proper dehumidification is achieved with the assistance of mist sprinklers. Minimal energy is drawn from the lower part of the area occupied by the animals and is expelled through the roof opening.
Conclusion: Based on the above-mentioned resources, the following are suggested in the case of longitudinal and transverse ventilation of cold climate cattle farms:
1. Unpredicted entry of outside air into the interior of cattle barns should be strictly avoided.
2. If the entire space of the barn is used, the use of a longitudinal one-way ventilation mechanism is required, while all the openings are closed. It is recommended to incorporate a temperature control source, such as a radiator, positioned at a height of 3 meters above the main floor level, equipped with both hot and cold water supply, at one side of the barn. Simultaneously, a suction device (jet fan) should be installed at floor level on the opposite side, expelling air outward. In this setup, fresh outdoor air, having passed through the radiator, becomes conducive and enters the enclosure. Following even distribution of this air to achieve a desirable temperature within the environment, it exits through the suction system located on the opposite side. Additionally, a pressure regulating valve should be installed at the lower level of the side housing the radiator, which can be closed during colder seasons.
3. If it is possible to change the interior space of the cattle barn, lateral ventilation is suggested from both sides.
4. In general, transverse ventilation with a roof valve is more efficient than ventilation along the cattle barn.

کلیدواژه‌ها [English]

  • Ventilation
  • Cattle Breeding
  • Barn Architecture
  • Indoor Air Flow

این مقاله برگرفته از پایان‌نامه کارشناسی ارشد نویسنده دوم با عنوان «طراحی مرکز دامپروری بخش شهرستان سلماس با هدف ارتقای کیفیت تهویه طبیعی در فضای دامداری» می‌باشد که به راهنمایی نویسنده اول در دانشگاه آزاد اسلامی واحد سوادکوه انجام گرفته است.

This article is derived from the second author`s master thesis entitled “Modifying the air flow pattern inside the cattle farms of Salmas city through intervention in architecture with the aim of improving the ventilation situation”, supervised by the first author, at Islamic Azad University Savadkuh Branch.

مراجع
  1. Abdulkareem, H. A. (2016). Thermal comfort through the microclimates of the courtyard. A critical review of the middle-eastern courtyard house as a climatic response. Procedia-Social and Behavioral Sciences, 216, 662-674.
  2. ACGIH. (2011) The Industrial Ventilation Manual. USA: The American Conference of Governmental Industrial Hygienists (ACGIH) Ltd.
  3. Amidpoor, m. (2009) survey of the usage of no chimney heaters on indoor air quality, a research project, Khaje Nasir university, mechanic department: Iran’s consumption improvement co. [in Persian]
  4. Amidpour, Majid and Sofari, Seyyed Mahdi. (2008). Investigating the role of flow mixing in the optimal design of water and energy networks, Iranian Journal of Chemistry and Chemical Engineering, Volume 28, Number 2, 1-11. [in Persian]
  5. ASHRAE, H. (2007). applications, Atlanta, Ga: American Society of Heating, Refrigeration and Air Conditioning Engineers Inc.
  6. Axley, J., & Chung, D. (2006). Well-posed models of porous buildings for macroscopic ventilation analysis. nternational Journal of Ventilation, Vol. 5, No.1, PP.:89–104.
  7. Azam Rahmati, Elahe; Mohammadi, Hossein and Karbasi, Alireza (1400) Analysis of the sustainability of livestock sub-sector activities in the provinces of Iran, Quarterly Journal of Agricultural Economics and Development, serial 115 (autumn 1400), 189-208
  8. Bagheri, Hadi (2013). A review of pheasant breeding, Journal of Poultry and Animal Husbandry Sciences, August and September 2013, number 11
  9. Bruce, J. M. (1978). Natural convection through openings and its application to cattle building ventilation. Journal of Agricultural Engineering Research, 23(2), 151-167.
  10. Burgess, W. A. (1995) Recognition of Health Hazards in Industry. New York: Wiley Ltd.
  11. Busch, J.F. (1992). A tale of two populations: thermal comfort in air-conditioned and naturally ventilated offices in Thailand, Energy and Buildings 18 (3/4) 235–249.
  12. Cherier, M. K., Benouaz, T., Bekkouche, S. M. A., & Hamdani, M. (2018). Some solar passive concepts in habitat through natural ventilation case study: Dry climate in Algeria Ghardaia. Case studies in thermal engineering, 12, 1-7.
  13. Chlela, F., et al. (2009). A new methodology for the design of low energy buildings, Energy Build. 41 982–990.
  14. Chu, C. R., Chiu, Y. H., Chen, Y. J., Wang, Y. W., & Chou, C. P. (2009). Turbulence effects on the discharge coefficient and mean flow rate of wind-driven cross ventilation, Buildingand Environment 44, PP.2064–2072.
  15. Cleon, Tommy. (2011). Natural ventilation in buildings, architectural concepts, requirements and facilities, translators: Mohammadreza Lilian, Mahdia Abedi, Arin Amirkhani and Mansoura Tahbaz, specialized publisher of architecture and urban planning, first edition, 14-60. [in Persian]
  16. Dale, H. E., & Brody, S. (1954). Environmental physiology and shelter engineering with special reference to domestic animals. XXX, Thermal stress and acid-base balance in dairy cattle. University of Missouri, College of Agriculture, Agricultural Experiment Station.
  17. Down, M. J., McMahon, T. A., Foster, M. P., & Redding, G. J. (1985). The design of livestock buildings for natural ventilation: the theoretical basis and a rational design method. Agricultural Engineering Report-University of Melbourne Department of Civil and Agricultural Engineering (Australia).
  18. Energy Consumption Guide 19 (1993). Energy Efficiency in Offices, Energy Efficiency Office/HMSO, London.
  19. Energy Information Administration (1995). State Energy Data Report, 3–7 Tables.
  20. Fakhriah, F., Yusoff, W. F. M., Mohamed, M. F., & Sapian, A. R. (2017). CFD modeling of natural ventilation in a void connected to the living units of multi-storey housing for thermal comfort. Energy and Buildings, 144, 1-16.
  21. Giel, P. W., & Schmidt, F. W. (1986). All experiment study of high Rayleigh number natural convection, In: An Enclosure Proceeding of the 8th International Heat Transfer Conference, Vol. 4, pp. 1459-1464.
  22. Hassana. M.A, et al., (2007). Investigation of effects of window combinations on ventilation characteristics for thermal comfort in buildings. 209: 251–260.
  23. Heiselberg, P., & Sandberg, M. (2006). Evaluation of discharge coefficients for window openings in wind driven natural ventilation, International Journal of Ventilation, Vol. 5, No.1, PP. 43–52.
  24. Karava, P., Stathopoulos, T., & Athienitis, A. K. (2004). Wind driven flow through openings-areview of discharge coefficients, International Journal of Ventilation, Vol. 3, No.3, pp. 255–266.
  25. Karimi, Rasul; Ghanbari, Amrullah and Yazdan-Shanesh, Sadegh (2022) Heat stress in cattle farms, Iranian Livestock Monthly, No. 40, 269-270[in Persian]
  26. Loomans, M. G. L. C., & Mook, F. V. (1995). Survey on measuring indoor airflows FAGO. Report 95.25.W, Eindhoven University of technology Sweden.
  27. Martínez-Molina, A., Tort-Ausina, I., Cho, S., & Vivancos, J. L. (2016). Energy efficiency and thermal comfort in historic buildings: A review. Renewable and Sustainable Energy Reviews, 61, 70-85.
  28. Masoudi, Siamak. (2004). Taking care of the calf at the time of birth, promotional publication of the Ministry of Agricultural Jihad, first edition, Tehran, published by Shaghaig Rusta Cultural and Artistic Institute. [in Persian]
  29. McDowell, R. E. (1974). Effect of environment on the functional efficiency of ruminants. In Livestock Environment. Proceedings of the 1st International Livestock Symposium. ASAE, St. Joseph, MI (pp. 220-231).
  30. Muhsin, F., Mohammad Yusoff, W. F., Mohamed, M. F., & Sapian, A. R. (2016). The effects of void on natural ventilation performance in multi-storey housing. Buildings, 6(3), 35.
  31. Nagano, Y., & Tagawa, M. (1990). An improved k-ε model for Boundary layer flows, Journal of Fluids Engineering, Vol. 112, pp. 33-39.
  32. Nouri, Mohammad; Mesmi, Mohammad Ali and Qasimzadeh, Hamidreza (2021). Estimation of pollution and environmental effects of different methods of disposal of cattle wastes using IPCC recommendations, Agricultural Mechanization Journal, sixth year, number 3 (autumn 2021), 39-33[in Persian]
  33. Olsen, D. A., Glicksman, L.R., and Ferm, H. M. (1990) “Steady state natural convection in a empty and partitioned enclosure at high Rayleigh numbers”, J. Heat Transfer, Trans. ASME 112: 640-64.
  34. Rahaei, O. (2013) cultural identity and its effects on natural ventilation’s method in traditional Bazzar of Dezful, Bagh-e-Nazar, 2013:39-46. [in Persian]
  35. Rahaei, O. (2013). Investigating the indoor air flow process and its analytical models in small industrial sheds with CFD method, Sustainable Architecture and Urbanism, second year, number two, 55-63. [in Persian]
  36. Rahaei, O. (2014). Effects of architectural somatic variables on mixed air conditioning systems’ efficiency in industrial buildings, Armanshahr Architecture & Urban Development Journal, Vol. 12, pp. 69-81.
  37. Rahaei, O. (2019). Investigating the physical changes of the central courtyards on the air flow pattern inside them in the Qajar era houses of Isfahan using CFD method (case study: Labaf House), Stable City Architecture, 9th year, 2nd issue, 25-46. [in Persian]
  38. Rahaei, O. and Azemati. H. (2018). Improving the quality of natural ventilation in classrooms in Mazandaran province based on the condition of openings using the CFD method. Iran Scientific Journal of Architecture and Urban Planning, Volume 11, Number 19, 57-71. [in Persian]
  39. Reshnotalai, Nasreen; Shams Khorramabadi, Qadrat Elah; Godini, Hatem; Rashidi, Rajab and Yousufzadeh, Abdul Rahim. (2013). Investigating indoor and outdoor air pollutants of urban residential houses, Mazandaran University of Medical Sciences Journal, February, Volume 121, Number 24, 329-399.
  40. Rezaei, Mehrangiz; Faraji Sabokbar, Hassan Ali; Mazinani, Hamed; and Tahmasabi, Siamak (1401). Spatial modeling of industrial cattle ranches in rural areas of Iran, Spatial Economy and Rural Development Quarterly, 11th year, number 1 (series 39, spring 1401), 25-44
  41. Roasaei, A., & Rahaei, O. (2020). Improvement of Indoor Air Flow Quality under the Influence of Internal Partition Walls in Air-Conditioned Office Spaces Using CFD Method. Armanshahr Architecture & Urban Development, 13(30), 69-81.
  42. Saadatjoo, P., Mahdavinejad, M., & Zarkesh, A. (2019). Porosity Rendering in High-Performance Architecture: Wind-Driven Natural Ventilation and Porosity Distribution Patterns. Utopia architecture and urban planning. 87-73, (26) 12.
  43. Sadrnia, Hassan. (2008). Designing the ventilation system of industrial livestock farms in accordance with international standards, Proceedings of the first national industrial ventilation conference, 5th and 6th of March, Sharif University of Technology. [in Persian]
  44. Sawachi, T., Ken-ichi, N., Kiyota, N., Seto, H., Nishizawa, S., & Ishikawa, Y. (2004). Wind pressureand air flow in a full-scale building model under cross ventilation. Int J Vent, Vol.2, No.4, pp. 343–357.
  45. Selmas municipality (2018). Filed in Selmas municipality in 2013. [in Persian]
  46. Shaw, C. Y. (1997). Maintaining Acceptable Air Quality in Office Buildings through Ventila-tion. National Research Council of Canada Januray, 3, 1206-1220. https://nrc-publications.canada.ca/eng/view /accepted/ ?id=5ce65c15-0fe8-438f-9ea3-40300ab4325e.
  47. Shetabivash, H. (2015). Investigation of opening position and shape on the natural cross ventilation. Energy and Buildings 93. 1–15.
  48. Sribanurekha, V., Wijerathne, S. N., Wijepala, L. H. S., & Jayasinghe, C. (2016). Effect of Different Ventilation Conditions on Indoor CO2 Levels.
  49. Teodosiu, C., Ilie, V., Teodosiu, R. (2014). Appropriate CFD turbulence model for improving indoor air quality of ventilated spaces, Mathematical Modelling in Civil Engineering, Vol. 10, No. 4, pp. 28-42.
  50. Tian, L., Lin, Z., Liu, J., Yao, T., & Wang, Q. (2011). The impact of temperature on mean local air age and thermal comfort in a stratum ventilated office. Building and Environment, 46(2), 501-510.
معماری و شهرسازی ایران(JIAU)
دوره 14، شماره 1
مرداد 1402
صفحه 311-326
فایل ها
سابقه مقاله
  • تاریخ دریافت: 14 آبان 1401
  • تاریخ بازنگری: 16 دی 1401
  • تاریخ پذیرش: 12 اسفند 1401
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