فصلنامه علمی کارافن

فصلنامه علمی کارافن

بازجست عملکرد اقلیمی فضاهای نیمه‌باز در جهت تعدیل دما در اقلیم گرم و خشک شیراز مبتنی بر تناسبات کالبدی(نمونه موردی ایوان)

نوع مقاله : مقاله پژوهشی (کاربردی)

نویسندگان
1 دکتری معماری
2 استاد گروه معماری،دانشکده معماری وشهرسازی،دانشگاه تربیت دبیر شهید رجایی
3 استادیار گروه معماری،واحد بوشهر،دانشگاه ازاد اسلامی ،بوشهر،ایران
چکیده
افزایش ساخت‌و‌سازهای شهری، محدوده آسایش حرارتی زندگی انسان‌ها نیز بیش‌تر تحت‌تاثیر آسیب‌های ناشی از عدم تعادل اقلیمی قرار گرفته‌است.

شناخت و تاثیر تناسبات کالبدی فضاهای نیمه‌باز بر عملکرد حرارتی آن‌ها مبتنی بر بهبود شاخص آسایش حرارتی و کاهش استرس حرارتی محیط پیرامون مهم‌ترین هدف این پژوهش است.

تناسبات کالبدی بر عملکرد حرارتی فضاهای نیمه‌باز در مناطق با استرس حرارتی بالا در شیراز چگونه تاثیر می‌گذارند؟ مهم‌ترین سوال این پژوهش بوده‌است.

روش تحقیق پژوهش کمی بوده‌است که در 2 بافت تاریخی و 1 بافت میانه شهر شیراز توسط آزمون‌های میدانی و سپس شبیه‌سازی صورت گرفته‌است. نتایج برداشت شده توسط دستگاه‌های ثیت دما و رطوبت به همراه برداشت‌های کالبدی صورت گرفته‌است. در ادامه اعتبارسنجی توسط نرم‌افزار انوی‌مت انجام شده و شاخص آسایش حرارتی PET از همین نرم‌افزار مستخرج شده‌است. ارزیابی و غربالگری پارامترها توسط نرم‌افزار دلفی انجام شده و در نهایت توسط نرم افزار SPSS و اکسل ضرایب همبستگی صورت گرفته‌است.

مهم‌ترین دستاوردهای پژوهش حاکی از آن است که ساختار ایوان در اقلیم گرم و خشک شیراز مناسب‌ترین کالبد اقلیمی را دارد. جهت قرارگیری ایوان در جبهه شمال غرب-غرب کم‌ترین دما را به خود اختصاص داده‌است. بهینه‌ترین تناسبات فیزیکی با گسترش مساحت ایوان در نما و در همین راستا بیش‌تر شدن عرض به ارتفاع ایوان (L/H>1)، کاهش ارتفاع جهت سایه‌اندازی و افزایش ارتفاع ایوان از سطح زمین، شاخص آسایش حرارتی PET تاثیر دمایی مناسب‌تری را تجربه کرده‌است. در نهایت شاخص آسایش حرارتی با افزایش گشایش فضایی در نما(سطح عمود) نسبت به سطح افقی تاثیر چشم‌گیرتری نشان داده‌است.
کلیدواژه‌ها
موضوعات

عنوان مقاله English

Re-examining the climatic performance of semi-open spaces in order to adjust temperature in the hot and dry climate of Shiraz based on physical proportions (case study of a veranda)

نویسندگان English

jamshid karimzadeh 1
jamal-e-ddin mahdinejad,, 2
BAGHER KARIMI 3
1 Ph.D. Department of Architecture
2 Professor of Faculty Architecture, Art & Architecture Faculty, Tarbiat Dabir Shahid Rajaee University, Tehran, Iran
3 Assistant Professor of Faculty Architecture, Bushehr Branch, Islamic Azad University, Bushehr,Iran
چکیده English

With the increase in urban construction, the thermal comfort range of human life has also been more affected by the damages caused by climate imbalance.

Understanding the impact of the physical proportions of semi-open spaces on their thermal performance based on improving the thermal comfort index and reducing the thermal stress of the surrounding environment is the most important goal of this research.

How do physical proportions affect the thermal performance of semi-open spaces in areas with high thermal stress in Shiraz? This was the most important question of this research.

The research method was quantitative research, which was carried out in 2 historical and 1 middle urban areas of Shiraz city through field tests and then simulation. The results were collected by temperature and humidity sensors along with physical measurements. Then, validation was carried out by Envi-met software and the PET thermal comfort index was extracted from this software.

The most important achievements of the research indicate that the structure of the veranda in the hot and dry climate of Shiraz has the most suitable climatic structure. The orientation of the veranda on the northwest-west front has the lowest temperature. The most optimal physical proportions, by expanding the area of the veranda on the facade and, in this regard, increasing the width to the height of the veranda (L/H>1), reducing the height for shading, and increasing the height of the veranda from the ground, the PET thermal comfort index has experienced a more appropriate temperature effect.

کلیدواژه‌ها English

Thermal Comfort
Heat Island
Ecological Architecture
Semi-Open Spaces
Physical Proportions
Thermal Performance
PET index
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دوره 22، شماره 4
کشاورزی / هنر و معماری
زمستان 1404
صفحه 230-268

  • تاریخ دریافت 20 اسفند 1403
  • تاریخ بازنگری 13 خرداد 1404
  • تاریخ پذیرش 06 مهر 1404