امكان سنجي استفاده از انرژي زمين گرمايي در ساختمان به منظور كاهش انتشار آلاينده دي اكسيد كربن در محيط(مطالعه موردي شهر همدان)

Feasibility of using geothermal energy in building in order to reduce carbon dioxide pollutant emissions in environment (Case Study: Hamedan)

ﭼﮑﯿﺪه زﻣﯿﻨﻪ و ﻫﺪف: رﻓﺘﺎر ﺣﺮارﺗﯽ ﺳﺎﺧﺘﻤﺎن ﻫﺎي زﯾﺮ زﻣﯿﻦ، ﻧﺴﺒﺖ ﺑﻪ ﺳﺎﺧﺘﻤﺎن ﻫﺎي روي زﻣﯿﻦ ﻣﺘﻔﺎوت اﺳﺖ. ﻧﺰدﯾﮑﯽ دﻣﺎي درون زﻣﯿﻦ ﺑﻪ ﻣﺘﻮﺳﻂ دﻣﺎي ﺳﺎﻻﻧﻪ ﻣﺤﯿﻂ، ﺑﺎﻋﺚ ﮐﺎﻫﺶ ﺗﺒﺎدل ﺣﺮارت اﯾﻦ ﺑﻨﺎﻫﺎ، ﻧﺴﺒﺖ ﺑﻪ ﺳﺎﺧﺘﻤﺎن ﻫﺎي روي زﻣﯿﻦ ﻣﯽ ﺷﻮد. ﮐﺎﻫﺶ ﻣﺼﺮف اﻧﺮژي، اﻧﺘﺸﺎر ﮔﺎزﻫﺎي ﮔﻠﺨﺎﻧﻪ اي را ﮐﺎﻫﺶ ﻣﯽ دﻫﺪ. ﻫﺪف اﯾﻦ ﭘﮋوﻫﺶ اﻣﮑﺎن ﺳﻨﺠﯽ اﺳﺘﻔﺎده از اﻧﺮژي زﻣﯿﻦ ﮔﺮﻣﺎﯾﯽ در ﺳﺎﺧﺘﻤﺎن ﺑﻪ ﻣﻨﻈﻮر ﮐﺎﻫﺶ اﻧﺘﺸﺎر آﻻﯾﻨﺪه دي اﮐﺴﯿﺪ ﮐﺮﺑﻦ در ﺷﻬﺮ ﻫﻤﺪان ﺑﺎ ﺷﺮاﯾﻂ اﻗﻠﯿﻤﯽ ﺳﺮد در ﺳﺎل 1398 ﻣﯽ ﺑﺎﺷﺪ. روش ﺑﺮرﺳﯽ: ﺷﺒﯿﻪ ﺳﺎزي ﺑﺎ اﺳﺘﻔﺎده از ﻧﺴﺨﻪ 8-1-0 ﻧﺮم اﻓﺰار اﻧﺮژي ﭘﻼس اﻧﺠﺎم ﺷﺪ. ﻣﺪل ﻣﻮرد ﺑﺮرﺳﯽ، ﻧﻤﻮﻧﻪ ﻓﻀﺎﯾﯽ اﺳﺘﺎﻧﺪارد 900 اﺷﺮي ﺑﺎ ﮐﺎرﺑﺮي ﻣﺴﮑﻮﻧﯽ در ﻧﻈﺮ ﮔﺮﻓﺘﻪ ﺷﺪ. در اﺑﺘﺪا، ﻣﺪل روي ﺳﻄﺢ زﻣﯿﻦ ﻣﺴﺘﻘﺮ و ﻣﺼﺮف اﻧﺮژي آن ﻣﻌﺎدل 0/424 ﻣﮕﺎوات ﺳﺎﻋﺖ ﺑﺮ ﻣﺘﺮﻣﺮﺑﻊ ﻣﺸﺨﺺ ﺷﺪ. ﺳﭙﺲ ﻧﻤﻮﻧﻪ در ﮔﺎم ﻫﺎي ﻣﺘﻮاﻟﯽ و ﻣﺴﺎوي 0/5، 1، 1/5، 2، 2/5 و 3 ﻣﺘﺮي در ﻋﻤﻖ زﻣﯿﻦ واﻗﻊ و در ﻫﺮ ﮔﺎم ﻣﺼﺮف اﻧﺮژي ﻣﺸﺨﺺ ﺷﺪ. ﯾﺎﻓﺘﻪ ﻫﺎ: ﯾﺎﻓﺘﻪ ﻫﺎ ﻧﺸﺎن داد ﮐﻪ در ﻋﻤﻖ ﻫﺎي ﯾﺎدﺷﺪه، ﺑﻪ ﺗﺮﺗﯿﺐ ﻣﻌﺎدل 14/51، 28/38، 44/56، 57/25، 74/70 و 79/07 درﺻﺪ ﻧﺴﺒﺖ ﺑﻪ ﺣﺎﻟﺖ اوﻟﯿﻪ ﻧﯿﺎز ﺳﺎﻻﻧﻪ اﻧﺮژي ﻧﻤﻮﻧﻪ ﮐﺎﻫﺶ ﯾﺎﻓﺘﻪ اﺳﺖ. از ﻃﺮﻓﯽ ﻣﯿﺰان اﻧﺘﺸﺎر آﻻﯾﻨﺪه دي اﮐﺴﯿﺪ ﮐﺮﺑﻦ در ﻣﺤﯿﻂ ﻧﯿﺰ ﺑﻪ ﺗﺮﺗﯿﺐ ﻣﻌﺎدل0/65 و 1/27 و 1/99 و 2/57 و 3/35 و 3/55 درﺻﺪ ﮐﺎﻫﺶ ﯾﺎﻓﺘﻪ اﺳﺖ. ﺑﺤﺚ و ﻧﺘﯿﺠﻪ ﮔﯿﺮي: اﺳﺘﻘﺮار ﺳﺎﺧﺘﻤﺎن درون زﻣﯿﻦ، اﻧﺘﺸﺎر آﻻﯾﻨﺪه دي اﮐﺴﯿﺪ ﮐﺮﺑﻦ در ﻣﺤﯿﻂ را ﮐﺎﻫﺶ ﻣﯽ دﻫﺪ.

Background and Objective: The thermal behavior of underground buildings is different from that of above ground buildings. The approaching temperature of the inner layers of the earth to the average annual outdoor temperature reduces the heat exchange of these buildings compared to buildings on the ground. Reducing energy consumption reduces greenhouse gas emissions. The purpose of this study is to evaluate the feasibility of using geothermal energy in buildings to reduce carbon dioxide emissions in the city of Hamedan with cold climatic conditions in 2019. Method: The simulation was performed by using version 8-1-0 of Energy Plus software. In the model, a standard 900 Ashrae sample space with residential usage was considered. At first the building was located on the ground as default and its energy consumption was set to 0/424 MWh /m2. In later stages, the sample is gradually placed in depth in successive steps equal to 0.5, 1, 1.5, 2, 2.5 and 3 meters. Findings: findings showed that in each depth, 14.51%, 28.38%, 44.56%, 57.25%, 74.70% and 79.07% of the annual energy requirements of the sample space has been reduced. On the other hand, in each scenario, the carbon dioxide pollutant emissions as the main greenhouse gas, has been declined to 0.65, 1.27, 1.99, 2.57, 3.35 and 3.55 percent, respectively. Discussion and Conclusion: Therefore, It was concluded that Placement of buildings under the ground reduces carbon dioxide pollutant emissions in environment.