ﻗﺎﺑﻠﯿﺖ اﻃﻤﯿﻨﺎن، ﺑﻬﯿﻨﻪﺳﺎزي و ﺗﺤﻠﯿﻞ اﻗﺘﺼﺎدي ﺳﺎﻣﺎﻧﻪ اﺳﺘﺤﺼﺎل آب ﺑﺎران از ﭘﺸﺖﺑﺎم

Reliability, Optimization and Economic Analysis of the Rainwater Harvesting System from the Rooftop

ارزﯾﺎﺑﯽ ﻋﻤﻠﮑﺮد و ﺗﺤﻠﯿﻞ اﻗﺘ ﺼﺎدي ﺳﺎﻣﺎﻧﻪ ﻫﺎي ا ﺳﺘﺤ ﺼﺎل آب ﺑﺎران، ﮐﻪ ﯾﮑﯽ از روش ﻫﺎي ﻣﺆﺛﺮ و ﮐﺎرآﻣﺪ در زﻣﯿﻨﻪ ﻣﻘﺎﺑﻠﻪ ﺑﺎ ﺑﺤﺮان ﮐﻤﺒﻮد ﻣﻨﺎﺑﻊ آﺑﯽ ﻣﯽﺑﺎﺷــﺪ، ﻣﻮﺟﺐ اﻋﻤﺎل ﻣﺪﯾﺮﯾﺖ ﺑﻬﺘﺮ در اﺟﺮاي اﯾﻦ ﺳــﺎﻣﺎﻧﻪﻫﺎ ﻣﯽﮔﺮدد. در اﯾﻦ ﻣﻘﺎﻟﻪ ﺑﺎ ﻫﺪف ارزﯾﺎﺑﯽ ﻋﻤﻠﮑﺮد ﺳﺎﻣﺎﻧﻪﻫﺎي اﺳﺘﺤﺼﺎل آب ﺑﺎران، دو ﺳﺎﺧﺘﻤﺎن ﺧﻮاﺑﮕﺎه ﻣﻮﺳﯽ ﻧﮋاد و ﺑﺎﺷﮕﺎه ورزﺷﯽ در داﻧﺸﮑﺪه ﮐﺸﺎورزي داﻧ ﺸﮕﺎه ﺗﺮﺑﯿﺖ ﻣﺪرس ﺑﻪ ﻋﻨﻮان ﻣﮑﺎن ﻫﺎي ﻣﻮرد ﻣﻄﺎﻟﻌﻪ اﻧﺘﺨﺎب ﺷﺪﻧﺪ. ﺳﭙﺲ داده ﻫﺎي22 ﺳﺎﻟﻪ ﺑﺎرش روزاﻧﻪ اﯾ ﺴﺘﮕﺎه ﻫﻮا ﺷﻨﺎ ﺳﯽ ﭼﯿﺘﮕﺮ ﺗﻬﯿﻪ ﺷﺪ. ﺷﺒﯿﻪ ﺳﺎزي ﺳﺎﻣﺎﻧﻪ در ﻣﺤﯿﻂ ﻧﺮم اﻓﺰار ﻣﺘﻠﺐ ﺻﻮرت ﮔﺮﻓﺘﻪ و ﻗﺎﺑﻠﯿﺖ اﻃ ﻤﯿﻨﺎن و آزﻣﻮن ﺳــﺮرﯾﺰ ﻣﺨﺎزن ذﺧﯿﺮهﺳــﺎزي ﺗﻌﯿﯿﻦ ﺷــﺪ. ﻫﻤﭽﻨﯿﻦ ﺑﺎ اﺳــﺘﻔﺎده از اﻟﮕﻮرﯾﺘﻢ ژﻧﺘﯿﮏ، ﺣﺠﻢ ﺑﻬﯿﻨﻪ ﻣﺨﺎزن ﻫﺮ دو ﺳــﺎﺧﺘﻤﺎن ﺗﻌﯿﯿﻦ ﺷﺪه و در ﻧﻬﺎﯾﺖ ﺗﺤﻠﯿﻞ اﻗﺘﺼﺎدي ﺳﺎﻣﺎﻧﻪ ﻫﺎي ﻣﺬﮐﻮر ﺑﺎ ﺷﺎﺧﺺ ارزش ﮐﻨﻮﻧﯽ ﺧﺎﻟﺺ و ﻧﺴﺒﺖ ﻣﻨﻔﻌﺖ- ﻫﺰﯾﻨﻪ اﻧﺠﺎم ﺷﺪ. ﻧﺘﺎﯾﺞ ﻧ ﺸﺎن داد ﮐﻪ ﺣﺠﻢ ﺑﻬﯿﻨﻪ ﻣﺨﺎزن ﺑﺮ اي ﺑﺎ ﺷﮕﺎه ورز ﺷﯽ و ﺧﻮاﺑﮕﺎه ﻣﻮ ﺳﯽ ﻧﮋاد ﺑﻪ ﺗﺮﺗﯿﺐ ﺑﺮاﺑﺮ ﺑﺎ 2/415 و ﯾﮏ ﻣﺘﺮﻣﮑﻌﺐ ﻣﯽﺑﺎﺷﺪ ﮐﻪ ﺑﺎ اﺳﺘﻔﺎده از اﯾﻦ ﻣﺨﺎزن ﻣﯽﺗﻮان ﺳﺎﻻﻧﻪ ﺑﻪ ﺗﺮﺗﯿﺐ 82 و 120 ﻣﺘﺮﻣﮑﻌﺐ آب ذﺧﯿﺮه ﻧﻤﻮد. ﻫﻤﭽﻨﯿﻦ ﻧﺘﺎﯾﺞ ﻧﺸﺎن داد ﮐﻪ اﺟﺮاي ﺳﺎﻣﺎﻧﻪ ﻫﺎي اﺳﺘﺤﺼﺎل آب ﺑﺎران ﺑﺮاي ﺧﻮاﺑﮕﺎه ﻣﻮﺳﯽ ﻧﮋاد ﺳﻮدآور ﺑﻮد ه وﻟﯽ ﺑﺮاي ﺑﺎﺷﮕﺎه ورزﺷﯽ ﺑﻪ دﻟﯿﻞ ﺗﻘﺎﺿﺎي ﮐﻢ و درﻧﺘﯿﺠﻪ ﺳﺮرﯾﺰ زﯾﺎد ﺗﻮﺟﯿﻪ اﻗﺘﺼﺎدي ﻧﺪارد.

Performance assessing and economic analysis of rainwater harvesting systems, which is one of the most effective methods to deal with the crisis of water scarcity, will lead to better management of these systems. The purpose of this study was to evaluate the performance of rainwater harvesting systems, Musanejad dormitory and sports club buildings in Tarbiat Modares University, Faculty of Agriculture were selected as study areas. Then, the 22 years old daily precipitation data of the Chitgar Weather Station was prepared. System simulation was performed in Matlab software and reliability and overflow ratio of storage tanks were determined. The Genetic Algorithm was used to determine the optimal volume of the tanks of both buildings and finally, an economic analysis of these systems was carried out using the Net Present Value method and benefit-cost ratio. The results showed that the optimum volume of tanks for the Sports Club and Musanejad dormitory was 2,415 and 1 cubic meters, respectively. These tanks can store up to 82 and 120 cubic meters of water per year, respectively. The results also showed that the performance of rainwater harvesting systems was beneficial for the Musanejad dormitory but had no economic justification for the sports club due to low demand and high overflow