ﺑﺮرﺳﯽ ﻧﻘﺶ ﺗﺨﻠﺨﻞ در ﺧﻮدﺳﺎيه اﻧﺪازي و ﮐﺎﻫﺶ اﻧﺮژي درياﻓﺘﯽ ﺟﺪارهﻫﺎ در ﺳﺎﺧﺘﻤﺎنﻫﺎي اﻗﻠﯿﻢ ﮔﺮم و ﻣﺮﻃﻮب

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

اﻫﺪاف: اﻣﺮوزه ﻣﺼﺮف ﺑﯽرويﻪ اﻧﺮژي ﺑﻪ يﮑﯽ از ﻣﻬﻤﺘﺮيﻦ دﻏﺪﻏﻪﻫﺎي زﻧﺪﮔﯽ ﺑﺸﺮي ﺗﺒﺪيﻞ ﺷﺪه اﺳﺖ و ﺑﻪﮐﺎرﮔﯿﺮي راﻫﮑﺎرﻫﺎي ﮐﺎﻫﺶ ﻣﺼﺮف اﻧﺮژي در ﺳﺎﺧﺘﻤﺎنﻫﺎ اﻫﻤﯿﺖ ﻓﺮاواﻧﯽ يﺎﻓﺘﻪ اﺳﺖ. يﮑﯽ از ﻣﻬﻤﺘﺮيﻦ ﻋﻮاﻣﻞ ﻣﻮﺛﺮ در ﻣﯿﺰان اﻧﺮژي دريﺎﻓﺘﯽ ﺳﺎﺧﺘﻤﺎن، ﻓﺮم و ﺷﮑﻞ ﮐﻠﯽ ﺑﺪﻧﻪ و ﻣﯿﺰان ﺗﺨﻠﺨﻞ ﺣﺠﻤﯽ آن اﺳﺖ. ﺑﺎ ﺗﻮﺟﻪ ﺑﻪ ايﻨﮑﻪ اﺳﺘﻔﺎده از ﺧﻮدﺳﺎيﻪاﻧﺪازي در ﺳﺎﺧﺘﻤﺎنﻫﺎي ﻣﻨﺎﻃﻖ ﮔﺮم و ﻣﺮﻃﻮب روﺷﯽ ﻣﻮﺛﺮ ﺑﺮاي ﺧﻨﮏﺳﺎزي ﺑﻨﺎ اﺳﺖ، ﭘﮋوﻫﺶ ﺣﺎﺿﺮ ﻣﯽﮐﻮﺷﺪ ﺗﺎ ﺑﻪ ﺑﺮرﺳﯽ ﺗﺎﺛﯿﺮ ﺗﺨﻠﺨﻞ ﺳﺎﺧﺘﻤﺎنﻫﺎ در ﻣﯿﺰان ﺧﻮدﺳﺎيﻪاﻧﺪازي آن و ﮐﺎﻫﺶ اﻧﺮژي دريﺎﻓﺘﯽ ﺑﺪﻧﻪﻫﺎ ﺑﭙﺮدازد. اﺑﺰار و روشﻫﺎ: ايﻦ ﭘﮋوﻫﺶ از ﻧﻮع ﺗﻮﺻﯿﻔﯽ- ﺗﺤﻠﯿﻠﯽ اﺳﺖ ﮐﻪ در آن ﺑﻪ ﮐﻤﮏ ﻧﺮماﻓﺰار 2011 Ecotect ﺷﺒﯿﻪﺳﺎزي ﻓﺮم ﺳﺎﺧﺘﻤﺎن و ﺑﺮرﺳﯽ ﺗﺎﺛﯿﺮ ﺧﻮدﺳﺎيﻪاﻧﺪازي ﺣﺎﺻﻞ از ﺗﺨﻠﺨﻞ ﺑﺮ ﻣﯿﺰان اﻧﺮژي دريﺎﻓﺘﯽ ﺟﺪارهﻫﺎي ﺳﺎﺧﺘﻤﺎن ﻣﯽﭘﺮدازد. يﺎﻓﺘﻪﻫﺎ: ﺑﺮرﺳﯽﻫﺎ ﻧﺸﺎن داد ﮐﻪ ﺗﻐﯿﯿﺮات ﻋﻤﻖ ﺗﺮاس ﺗﺎﺛﯿﺮ ﻗﺎﺑﻞ ﻣﻼﺣﻈﻪاي ﺑﺮ ﻣﯿﺰان ﺳﻄﻮح ﺗﺤﺖ ﺳﺎيﻪ ﻧﺪارد و داﻣﻨﻪ اﻧﺮژي ﺗﺎﺑﺸﯽ دريﺎﻓﺘﯽ در ارﺗﺒﺎط ﻣﺴﺘﻘﯿﻢ ﺑﺎ ﺗﻐﯿﯿﺮات ﻋﻤﻖ ﺗﺮاس ﻧﯿﺴﺖ. ﻣﻘﺎيﺴﻪ ﻧﺘﺎيﺞ ﺣﺎﺻﻞ از ﻣﺪلﻫﺎي ﻣﺘﺨﻠﺨﻞ ﺑﺎ ﻣﺪل ﺻﻠﺐ ﻧﺸﺎن داد ﮐﻪ در ﺣﺎﻟﺖ ﮐﻠﯽ ﻣﺪلﻫﺎي ﻣﺘﺨﻠﺨﻞ داﻧﻪاي ﺑﻬﺘﺮيﻦ و ﻣﺪلﻫﺎي ﻣﺘﺨﻠﺨﻞ رديﻔﯽ ﺑﺪﺗﺮيﻦ رﻓﺘﺎر از ﻣﻨﻈﺮ ﺳﺎيﻪاﻧﺪازي و اﻧﺮژي ﺗﺎﺑﺸﯽ دريﺎﻓﺘﯽ را دارﻧﺪ. ﻧﺘﯿﺠﻪﮔﯿﺮي: ايﺠﺎد ﺗﺨﻠﺨﻞ در ﺳﺎﺧﺘﻤﺎن ﻫﻤﯿﺸﻪ ﻣﻨﺠﺮ ﺑﻪ ﺑﻬﺒﻮد ﻋﻤﻠﮑﺮد ﺳﺎيﻪاﻧﺪازي ﺳﺎﺧﺘﻤﺎن ﻧﻤﯽﺷﻮد و ﺗﻼش ﺑﺮاي ﺑﻬﯿﻨﻪﺳﺎزي ﺳﺎيﻪاﻧﺪازي ﺑﻪ واﺳﻄﻪ ايﺠﺎد ﺗﺨﻠﺨﻞ ﻣﺴﺘﻠﺰم اﻧﺠﺎم ﻣﻄﺎﻟﻌﺎت و ﺷﺒﯿﻪﺳﺎزيﻫﺎي دﻗﯿﻖ ﻗﺒﻞ از ﻃﺮاﺣﯽ اﺳﺖ.

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 self-shading as an efficient passive cooling solution in hot and humid regions, the present study investigates the effect of porosity on self-shading and heat absorption amount. Instruments & Methods The research method of this study is descriptive-analytical, and simulations are conducted by Ecotect 2011 to explore self-shading 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 U-RL models have the best and R-RL models have the worst performance from the viewpoint of self-shading and solar heat absorption. Conclusion The implementation of porosity into the solid models does not always improve the shading potential. Optimization of building self-shading depends on the comprehensive study and essential simulations that subsequence the design period.