Analysis of Hydrodynamic Behavior of Windbreaks in the Average Internal Temperature of Semi-Warm and Arid Climates in Kashan with the Aim of Greater Efficiency

Subject Areas : architecture

Mohammad Ali Karbasfurooshha ¹ , Fereshteh Habib ² , Hossein Zabihi ³

1 - Ph.D. Candidate, Department of Architecture, Pardis Branch, Islamic Azad University, Pardis, Iran.
2 - Assistant Professor, Department of Architecture, Pardis Branch, Islamic Azad University, Pardis, Iran.
3 - Associate Professor, Department of Urban Planning, Sciences and Research Branch, Islamic Azad University, Tehran, Iran.

Received: 2021-01-31 Accepted : 2021-04-28 Published : 2022-03-21

Keywords: Semi-warm and arid climate, Windbreak, Kashan, Average indoor temperature, Hydrodynamic behavior,

Abstract :

One of the ways to achieve a building with higher energy efficiency and an efficient system is to use local architectural experiences. In the meantime, a windbreak is one of the elements used in the past to create comfort in Kashan's hot and dry climates. The interior of these settlements in this climate aims to greater efficiency of this element by CFD software, Energy Plus, and Open Studio with a descriptive-analytical method and then analyzed the results.  It has water spray, and one of the leading causes of temperature drop in these wind deflectors is the proportionality of the dimensions-the air inlet valve to the wind deflector, water temperature, dimensions, and height of the wind deflector column. Iranian indigenous architecture's interaction with the climate is a deep and ancient interaction that has long been using its experiences and techniques to create an architecture with maximum energy savings in Iran's climatic areas. The process of formation of these techniques in the length of time and in order to adapt to the climate while utilizing the natural force in the environment has created a suitable natural space for users. Innovative technology reduces the long-standing concern of architects in saving and optimizing energy consumption in buildings. In the meantime, the windbreak is one of the elements used in the past to create comfort in Kashan's hot and dry climates. They were used to move and cool the air in the building. The primary function of the wind deflectors was to direct the outside air into the building, relative cooling by establishing a flow at work and people living in different cities and places. Research has proven that the wind deflector is a suitable device for natural ventilation of the indoor air to reduce the internal temperature of the building and create thermal comfort for the residents. Traditional windbreaks are correctly designed according to the day's needs and have been widely used in hot and dry areas of Iran. What is certain is that the use of this element in today's world requires its adaptation to today's life. Today's cities and buildings have different faces, and windbreaks are limited. And analyze how it operates in terms of form and function. Comparison of the results of the analysis of wind speed in wind turbines and how the wind is oriented in the interior shows. Due to the low thermal mass of the windbreak walls compared to the room, the temperature fluctuation is always higher than the room. To reduce the room temperature further, the priority is to use a spray windshield over windshield wipers. Especially, windshields with water spray in which most of the room has a temperature of 298 K are approximately equal to 25 degrees Celsius and are in Kashan city's thermal comfort range. One of the main factors in this Temperature drop proportionality of dimensions- air inlet valve to the windshield, water temperature, measurements, and height of the windshield column.

References:

1. بهادری نژاد، مهدی؛ و دهقانی،علیرضا. (1392). بادگیر شاهکار مهندسی ایران. (ویرایش 2) . تهران: انتشارات یزدا.


2. بهادری نژاد، مهدی؛ و صفرزاده،حبیب اله. (1381). طراحی یک ساختمان بی نیاز از انرژی های فسیلی در تهران (ساختمان سبز)، مجموعه مقالات دومین همایش بهینه سازی مصرف سوخت. اسفند 6-7، (ص1450-1472). تهران.

https://civilica.com/doc/2337

3. پور احمدی، محبوبه ؛ و آیت اللهی،سید محمد حسین. (1390). دسته بندی انواع بادگیرها و رابطه فضایی با بخش تابستان نشین و راهکارهایی اصلاحی (یزد). نشریه شهر و معماری بومی، 1(1) ، 7-18.

https://civilica.com/doc/126628/

4. جهانگیری، میلاد؛ و زارع، عبدالرضا. (1393). مطالعه سازه های بادگیر و بهینه سازی مقطع بادگیر تحت اثرانرژی تجدید پذیر باد به عنوان یک سیستم تهویه مطبوع درمعماری قدیمی ایرانی. دو فصلنامه مباحث برگزیده در انرژی، دوره 1، شماره 1.

https://civilica.com/doc/529789/

5. عطروش ،علی (1393). راهکارهای معماری سنتی ایران در اقلیم گرم وخشک با توجه به تهویه طبیعی و استفاده از ایده های آن در معماری امروز ‌،پایان نامه کارشناسی ارشد، دانشگاه تهران،تهران.

https://ut.ac.ir/fa/thesis/22327/%D8%B1%D8%A7%D9%87%DA%A9%D8%A7%D8%B1%D9%87%D8%A7%DB%8C-%D9%85%D8%B9%D9%85%D8%A7%D8%B1%DB%8C-%D8%B3%D9%86%D8%AA%DB%8C-%D8%A7%DB%8C%D8%B1%D8%A7%D9%86-%D8%AF%D8%B1-%D8%A7%D9%82%D9%84%DB%8C%D9%85-%DA%AF%D8%B1%D9%85-%D9%88-%D8%AE%D8%B4%DA%A9-%D8%A8%D8%A7-%D8%AA%D9%88%D8%AC%D9%87-%D8%A8%D9%87-%D8%AA%D9%87%D9%88%DB%8C%D9%87-%D8%B7%D8%A8%DB%8C%D8%B9%DB%8C-%D9%88-%D8%A7%D8%B3%D8%AA%D9%81%D8%A7%D8%AF%D9%87-%D8%A7%D8%B2-%D8%A7%DB%8C%D8%AF%D9%87-%D9%87%D8%A7%DB%8C-%D8%A2%D9%86-%D8%AF%D8%B1-%D9%85%D8%B9%D9%85%D8%A7%D8%B1%DB%8C-%D8%A7%D9%85%D8%B1%D9%88%D8%B2

6. کلانتر، ولی. (1388). شبیه سازی تهویه و تامین سرمایش خودبخودی ساختمان با استفاده از ترکیب بادگیر و دودکش خورشیدی (حالت سه بعدی با دیدگاه دیفرانسیلی)، اولین کنفرانس بین المللی گرمایش، سرمایش و تهویه مطبوع. خرداد 5. تهران.

https://civilica.com/doc/66698/

7. مهدوی نژاد، محمدجواد؛ و جوانرودی، کاوان. (1390). مقایسه تطبیقی اثرجریان هوا بر دو گونه بادگیر یزدی وکرمانی. نشریه هنرهای زیبا، 3(4)، 69-80.

https://jfaup.ut.ac.ir/article_29678.html

8. محمودی، مهناز؛ و مفیدی شمیرانی، سیدمجید. (1387). هویت ایرانی بادگیر و پیشینه یابی آن درمعماری ایران. نشریه هویت شهر، 2(2)، 25-33.

https://www.sid.ir/fa/Journal/ViewPaper.aspx?ID=104663

9. Yaghoubi, M.A.,& Zamankhan,P.,& Sabzevari,A. (1998). Two-dimensional Numerical Simulation of Wind Flow and Ventilation in a Single Building Using the k-e Turbulent Model, Iranian journal of science and Technology,22(2) , 81-97. https://www.jstor.org/stable/43749918


10. Ghadiri, H.,& Lukman, N. (2010). Wind Catcher, a Natural Evaporating Cooling System. Science and Humanities (IGCESH). 3^rd International Graduate Conference on Engineering. November 2-4. School of Graduate Studies University Teknologi Malaysia. https://www.researchgate.net/publication/281774043