ﺑﺮرﺳﯽ ﻧﻘﺶ ﺗﺨﻠﺨﻞ در ﺧﻮدﺳﺎیه‌اﻧﺪازی و ﮐﺎﻫﺶ اﻧﺮژی دریاﻓﺘﯽ ﺟﺪارهﻫﺎ در ﺳﺎﺧﺘﻤﺎنﻫﺎی اﻗﻠﯿﻢ ﮔﺮم و ﻣﺮﻃﻮب

اﻫﺪاف: اﻣﺮوزه ﻣﺼﺮف ﺑﯽرویه اﻧﺮژی ﺑﻪ یکی از ﻣﻬﻤﺘﺮین دﻏﺪﻏﻪﻫﺎی زﻧﺪﮔﯽ ﺑﺸﺮی ﺗﺒﺪیل ﺷﺪه اﺳﺖ و ﺑﻪﮐﺎرﮔﯿﺮی راﻫﮑﺎرﻫﺎی ﮐﺎﻫﺶ ﻣﺼﺮف اﻧﺮژی در ﺳﺎﺧﺘﻤﺎنﻫﺎ اﻫﻤﯿﺖ ﻓﺮاواﻧﯽ یاﻓﺘﻪ اﺳﺖ. یکی از ﻣﻬﻤﺘﺮین ﻋﻮاﻣﻞ ﻣﻮﺛﺮ در ﻣﯿﺰان اﻧﺮژی دریاﻓﺘﯽ ﺳﺎﺧﺘﻤﺎن، ﻓﺮم و ﺷﮑﻞ ﮐﻠﯽ ﺑﺪﻧﻪ و ﻣﯿﺰان ﺗﺨﻠﺨﻞ ﺣﺠﻤﯽ آن اﺳﺖ. ﺑﺎ ﺗﻮﺟﻪ ﺑﻪ اینکه اﺳﺘﻔﺎده از ﺧﻮدﺳﺎیه‌اﻧﺪازی در ﺳﺎﺧﺘﻤﺎنﻫﺎی ﻣﻨﺎﻃﻖ ﮔﺮم و ﻣﺮﻃﻮب روﺷﯽ ﻣﻮﺛﺮ ﺑﺮای ﺧﻨﮏﺳﺎزی ﺑﻨﺎ اﺳﺖ، ﭘﮋوﻫﺶ ﺣﺎﺿﺮ ﻣﯽﮐﻮﺷﺪ ﺗﺎ ﺑﻪ ﺑﺮرﺳﯽ ﺗﺎﺛﯿﺮ ﺗﺨﻠﺨﻞ ﺳﺎﺧﺘﻤﺎنﻫﺎ در ﻣﯿﺰان ﺧﻮدﺳﺎیه‌اﻧﺪازی آن و ﮐﺎﻫﺶ اﻧﺮژی دریاﻓﺘﯽ ﺑﺪﻧﻪﻫﺎ ﺑﭙﺮدازد.اﺑﺰار و روشﻫﺎ: این ﭘﮋوﻫﺶ از ﻧﻮع ﺗﻮﺻﯿﻔﯽ ﺗﺤﻠﯿﻠﯽ اﺳﺖ ﮐﻪ در آن ﺑﻪ ﮐﻤﮏ ﻧﺮم اﻓﺰار 2011 ecotect ﺷﺒﯿﻪﺳﺎزی ﻓﺮم ﺳﺎﺧﺘﻤﺎن و ﺑﺮرﺳﯽ ﺗﺎﺛﯿﺮ ﺧﻮدﺳﺎیه‌اﻧﺪازی ﺣﺎﺻﻞ از ﺗﺨﻠﺨﻞ ﺑﺮ ﻣﯿﺰان اﻧﺮژی دریاﻓﺘﯽ ﺟﺪارهﻫﺎی ﺳﺎﺧﺘﻤﺎن ﻣﯽﭘﺮدازد.یاﻓﺘﻪﻫﺎ: ﺑﺮرﺳﯽﻫﺎ ﻧﺸﺎن داد ﮐﻪ ﺗﻐﯿﯿﺮات ﻋﻤﻖ ﺗﺮاس ﺗﺎﺛﯿﺮ ﻗﺎﺑﻞ ﻣﻼﺣﻈﻪای ﺑﺮ ﻣﯿﺰان ﺳﻄﻮح ﺗﺤﺖ ﺳﺎیه ﻧﺪارد و داﻣﻨﻪ اﻧﺮژی ﺗﺎﺑﺸﯽ دریاﻓﺘﯽ در ارﺗﺒﺎط ﻣﺴﺘﻘﯿﻢ ﺑﺎ ﺗﻐﯿﯿﺮات ﻋﻤﻖ ﺗﺮاس ﻧﯿﺴﺖ. ﻣﻘﺎیسه ﻧﺘﺎیج ﺣﺎﺻﻞ از ﻣﺪلﻫﺎی ﻣﺘﺨﻠﺨﻞ ﺑﺎ ﻣﺪل ﺻﻠﺐ ﻧﺸﺎن داد ﮐﻪ در ﺣﺎﻟﺖ ﮐﻠﯽ ﻣﺪلﻫﺎی ﻣﺘﺨﻠﺨﻞ داﻧﻪای ﺑﻬﺘﺮین و ﻣﺪلﻫﺎی ﻣﺘﺨﻠﺨﻞ ردیفی ﺑﺪﺗﺮین رﻓﺘﺎر از ﻣﻨﻈﺮ ﺳﺎیه‌اﻧﺪازی و اﻧﺮژی ﺗﺎﺑﺸﯽ دریاﻓﺘﯽ را دارﻧﺪ.ﻧﺘﯿﺠﻪﮔﯿﺮی: ایجاد ﺗﺨﻠﺨﻞ در ﺳﺎﺧﺘﻤﺎن ﻫﻤﯿﺸﻪ ﻣﻨﺠﺮ ﺑﻪ ﺑﻬﺒﻮد ﻋﻤﻠﮑﺮد ﺳﺎیه‌اﻧﺪازی ﺳﺎﺧﺘﻤﺎن ﻧﻤﯽﺷﻮد و ﺗﻼش ﺑﺮای ﺑﻬﯿﻨﻪﺳﺎزی ﺳﺎیه‌اﻧﺪازی ﺑﻪ واﺳﻄﻪ ایجاد ﺗﺨﻠﺨﻞ ﻣﺴﺘﻠﺰم اﻧﺠﺎم ﻣﻄﺎﻟﻌﺎت و ﺷﺒﯿﻪﺳﺎزیﻫﺎی دﻗﯿﻖ ﻗﺒﻞ از ﻃﺮاﺣﯽ اﺳﺖ.

Impact of Building Porosity on Self-Shading and Absorbed Solar Heat Reduction in Hot and Humid Regions

Aims Today, the overwhelming consumption of energy has become one of the most critical concerns of human life. The implementation of solutions to reduce energy consumption in buildings is becoming increasingly important. One of the most important factors determining the amount of energy received by a building is the general form of a building and the amount of its porosity. Considering the selfshading as an efficient passive cooling solution in hot and humid regions, the present study investigates the effect of porosity on selfshading and heat absorption amount.Instruments Methods The research method of this study is descriptiveanalytical, and simulations are conducted by Ecotect 2011 to explore selfshading potential and the amount of received solar energy.Findings Investigations indicated that the modification of terrace depth does not influence the amount of received solar energy significantly. A comparative study of the porous models revealed that the URL models have the best and RRL models have the worst performance from the viewpoint of selfshading and solar heat absorption.Conclusion The implementation of porosity into the solid models does not always improve the shading potential. Optimization of building selfshading depends on the comprehensive study and essential simulations that subsequence the design period.