بررسی آسایش حرارتی برای یک ساختمان با تهویه طبیعی با استفاده از یک مدل آسایش تطبیقی در شش شهر مختلف ایران

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشکده مهندسی مکانیک، دانشگاه محقق اردبیلی، اردبیل، ایران

2 دانشکده مهندسی مکانیک، دانشگاه تربیت مدرس، تهران، ایران

چکیده

در مقاله حاضر به بررسی عملکرد تهویه طبیعی عبوری در تأمین آسایش حرارتی یک ساختمان نمونه در شش شهر ایران با اقلیم‌های آب‌وهوایی مختلف با استفاده از نرم‌افزار انرژی پلاس پرداخته شده است. برای بررسی آسایش حرارتی ساختمان از مدل آسایش حرارتی تطبیقی استاندارد اشری 55 استفاده شده است. این مدل برای بررسی آسایش حرارتی در ساختمان‌های خنک شونده با تهویه طبیعی و فاقد تجهیزات تهویه مطبوع و مکانیکی پیشنهاد شده است. برای شبیه‌سازی تهویه طبیعی نیز مدل شبکه جریان هوا در نظر گرفته شده است. دوره شبیه‌سازی برای هر شش شهر از یک فروردین تا 31 شهریور در نظر گرفته شده است. نتایج نشان می‌دهد که برقراری آسایش حرارتی در ساختمان نمونه بیش از هر چیز به شرایط آب‌وهوایی و نوع اقلیم وابسته است. بهترین عملکرد برای شهر تبریز با اقلیم سرد و ضعیف‌ترین عملکرد برای شهر بندرعباس با اقلیم گرم و مرطوب مشاهده شده است. به‌طوری‌که با استفاده از تهویه طبیعی عبوری برای ساختمان نمونه در شهر تبریز در ساختمان بدون عایق در بیش از 69 درصد موارد، آسایش حرارتی برقرار شده است که برای بندرعباس این عدد حدود 12 درصد به‌دست‌آمده است. همچنین نتایج نشان داد که استفاده از عایق با ضخامت 5 سانتی‌متر در جداره‌های خارجی ساختمان درصد زمان‌های برقراری آسایش حرارتی را در مقایسه با ساختمان بدون عایق برای تمامی شهرها در حدود 8-12 درصد افزایش می‌دهد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Thermal Comfort Evaluation for Naturally Ventilated Building Applying an Adaptive Model in Different Cities of Iran

نویسندگان [English]

  • Asgar Minaei 1
  • Negin Moallemi Khiavi 2
1 Department of Mechanical Engineering, University of Mohaghegh Ardabili, Ardabil, Iran
2 Department of Mechanical Engineering, Tarbiat Modares University, Tehran, Iran
چکیده [English]

In the present article, the performance of natural cross ventilation in providing thermal comfort in a building across six cities of Iran with different climates has been investigated using Energy Plus software. To evaluate the thermal comfort of the building, the adaptive thermal comfort model of ASHRAE Standard 55 has been applied. This model is proposed to evaluate thermal comfort in naturally ventilated buildings without any mechanical ventilation equipment. However, the airflow network model has been considered to simulate natural ventilation through openings. The simulation time for all six cities is considered from 21 March to 22 September. The results show that the achievement of thermal comfort in the building depends mainly on climate. The best and the worst performance has been observed for Tabriz with its cold climate and Bandar Abbas with its hot and humid climate, respectively. Thermal comfort has been provided more than 69% of the time by applying natural cross ventilation in Tabriz for building without insulation.  While this value for Bandar Abbas is estimated at about 12%. Also, results show that the use of insulation with a thickness of 5 cm in the external constructions of the building makes an increase of about 8-12% in the hours of thermal comfort for all cities compared to the building without insulation.

کلیدواژه‌ها [English]

  • Cross natural ventilation
  • Adaptive thermal comfort model
  • Cooling
  • Energy Plus
[1]  H. Zhang, D. Yang, V. W.Y. Tam, Y Tao, G. Zhang, S. Setunge, L. Shi., A critical review of combined natural ventilation techniques in sustainable buildings, Renewable and Sustainable Energy Reviews, 141 (2021) 110795
[2] M. Nomura, K. Hiyama, A review, Natural ventilation performance of office buildings in Japan,
Renewable and Sustainable Energy Reviews, 74 (2017) 746–754.
[3] S. Fan, M. S. Davies Wykes, W. E. Lin, R. L. Jones, A. G. Robins, P. F. Linden, A full-scale
field study for evaluation of simple analytical models of cross ventilation and single-sided
ventilation, Building and Environment, vol. 187(2021) 107386.
[4] L. Moosavi, N. Mahyuddin, N. Ab Ghafar, M. Azzam Ismail, Thermal performance of atria: An
overview of natural ventilation effective designs, Renewable and Sustainable Energy Reviews, 34(2014)  654–670.
[5] N. Khan, Y. Su, S. B. Riffat, A review on wind driven ventilation techniques, Energy and
Buildings, 40( 8) (2008) 1586–1604.
[6] L. Yang, G. Zhang, Y. Li, Y. Chen, Investigating potential of natural driving forces for
ventilation in four major cities in China, Building and Environment, 40(6) (2005) 738–746.
[7] F. Jomehzadeh, H. M. Hussen, J. K. Calautit, P. Nejat, and M. S. Ferwati, “Natural ventilation by windcatcher (Badgir): A review on the impacts of geometry, microclimate and macroclimate,” Energy and Buildings, 226(2020) 110396.
[8] S. Omrani, V. Garcia-Hansen, R. Drogemuller, B. R. Capra, Thermal comfort evaluation of natural ventilation mode: Case study of a high-rise residential building, Fifty years later: Revisiting the role of architectural science in design and practice: 50th International Conference of the Architectural Science Association, The University of Adelaide, (2016) 1–9.
[9] L. C. Haw, O. Saadatian, M. Y. Sulaiman, S. Mat, K. Sopian, Empirical study of a wind-induced
natural ventilation tower under hot and humid climatic conditions, Energy and Buildings, 52 (2012) 28–38.
[10] J. Wang, T. Zhang, S. Wang, F. Battaglia, Numerical investigation of single-sided natural
ventilation driven by buoyancy and wind through variable window configurations, Energy and
Buildings, 168(2018) 147–164.
[11] S. Omrani, V. Garcia-Hansen, B. R. Capra, R. Drogemuller, Effect of natural ventilation mode
on thermal comfort and ventilation performance: Full-scale measurement, Energy and Buildings,
156 (2017) 1–16.
[12]  M. K. Esfeh, A. Sohankar, A. R. Shahsavari, M. R. Rastan, M. Ghodrat, M. Nili, Experimental and numerical evaluation of wind-driven natural ventilation of a curved roof for various wind angles, Building and Environment, 205 (2021) 108275.
[13] X. Zhang, A. U. Weerasuriya, and K. T. Tse, CFD simulation of natural ventilation of a generic
building in various incident wind directions: Comparison of turbulence modelling, evaluation
methods, and ventilation mechanisms, Energy and Buildings, 229 (2020) 110516.
[14]  DOE, EnergyPlus Version 9.6.0 Documentation Engineering Reference. U.S. Department of Energy,
2021.
[15] Natural ventilation modelling. https://designbuilder.co.uk/helpv2/Content/_Natural_ventilation
_modelling.htm.
[16] S. A. Mousavian, M. Maerefat, R. Madahian, B. M. Kari, Tips on Application of Natural Ventilation in Prevalent Buildings in Iran, Amirkabir Journal Mechanical Engineering, 53(3) (2021) 1621-1636.
[17] R. Aeinehvand, A. Darvish, A. B. Daemei, S. Barati, A. Jamali, V. M. Ravasjan, Proposing alternative solutions to enhance natural ventilation rates in residential buildings in the CFA climate zone of rasht, Sustainability, 13(2) (2021) 1–18.
[18] R. Vakilinezhad, J Shaeri, Evaluation of Thermal Comfort Zone in Naturally Ventilated Offices in Bushehr. Hoviatshahr, 14(4) (2020) 61-72.
[19] P. O. Fanger, J. Toftum, Extension of the PMV model to non-air-conditioned buildings in warm climates. Energy and buildings, 34(6) (2002) 533-536.
[20] R. J. De Dear, G. S. Brager, Thermal comfort in naturally ventilated buildings: revisions to ASHRAE Standard 55. Energy and buildings, 34(6) (2002) 549-561.
[21] ASHRAE, ASHRAE Handbook 2017 -Fundamentals: SI Edition. 2017.
[22] ASHRAE, ANSI/ASHRAE Standard 55-2020 - Thermal Environmental Conditions for Human
Occupancy. 2020.
[23] Z. Tong, Y. Chen, and A. Malkawi, Estimating natural ventilation potential for high-rise buildings
considering boundary layer meteorology, Applied Energy, 193 (2017) 276–286.
[24] G. Elshafei, A. Negm, M. Bady, M. Suzuki, and M. G. Ibrahim, Numerical and experimental
investigations of the impacts of window parameters on indoor natural ventilation in a residential
building, Energy and Buildings, 141(2017) 321–332.
[25] Road, Housing and Urban Development Research Center, National Building Regulations, code 19: Energy Savings. Tehran, Iran, 2020 (In Persian).
[26] Road, Housing and Urban Development Research Center, National Building Regulations, code 13:Design and implementation of electrical installations of buildings. Tehran , Iran, 2016 (In Persian).
[27] L. Gu, Airflow network modeling in EnergyPlus, in: 10th International Building Performance Simulation Association Conference, Tsinghua University, Beijing, China, 2007, pp. 964-972.
[28] J. Wang, S. Wang, T. Zhang, and F. Battaglia, Assessment of single-sided natural ventilation driven
by buoyancy forces through variable window configurations, Energy and Buildings, 139 (2017) 762–779.
[29] A. Ebrahimpour, M. Maerefat, A method for generation of typical meteorological year, Energy
Conversion and Management, 51(3) (2010)  410–417.
[30] Weather Data. https://energyplus.net/weather.