سنتز نانوساختارآلی- فلزی نیکل به عنوان ترکیب نوین نانوسیالی قابل استفاده در برج خنک کننده خشک

در اﯾﻦ ﻣﻄﺎﻟﻌﻪ ﻧﻤﻮﻧﻪ ﻫﺎی ﻧﻮﯾﻨﯽ از ﻧﺎﻧﻮﺳﺎﺧﺘﺎرﻫﺎی آﻟﯽ- ﻓﻠﺰی ﻧﯿﮑﻞ ﺑﻪ ﻋﻨﻮان ﮔﺰﯾﻨﻪ ﻫﺎی ﺟﺪﯾﺪ ﻧﺎﻧﻮﺳﯿﺎﻻﺗﯽ در زﻣﯿﻨﻪ ﺑﺮج ﺧﻨﮏ ﮐﻨﻨﺪه ﺧﺸﮏ ﺗﻮﺳﻂ روش اوﻟﺘﺮاﺳﻮﻧﯿﮏ ﺳﻨﺘﺰ ﺷﺪﻧﺪ. ﻧﻤﻮﻧﻪ ﻫﺎی ﺳﻨﺘﺰی ﺗﻮﺳﻂ آﻧﺎﻟﯿﺰ tg-dsc ، ftir ،xrd ، sem ، ﺗﮑﻨﯿﮏ bet و آﻧﺎﻟﯿﺰ ﻧﻘﺸﻪ ﺑﺮداری mapping ﻣﻮرد ﺗﺠﺰﯾﻪ و ﺗﺤﻠﯿﻞ ﻗﺮار ﮔﺮﻓﺘﻨﺪ. ﺑﺮاﺳﺎس آﻧﺎﻟﯿﺰ sem ، ﻣﻮرﻓﻮﻟﻮژی ﻣﺤﺼﻮﻻت ﺑﺼﻮرت ﯾﮑﻨﻮاﺧﺖ ﭘﺮاﮐﻨﺪه ﺷﺪه و ﺗﻮزﯾﻊ اﻧﺪازه ذرات در ﺣﺪود 3 ﻣﯿﮑﺮوﻣﺘﺮ اﺳﺖ. ﻧﺘﺎﯾﺞ اﻟﮕﻮی xrd ﻧﺸﺎن داد ﮐﻪ ﻧﺎﻧﻮﺳﯿﺎﻻت ﺗﻮﺳﻌﻪ ﯾﺎﻓﺘﻪ در اﯾﻦ ﻣﻄﺎﻟﻌﻪ دارای اﻧﺪازه ﮐﺮﯾﺴﺘﺎل در ﺣﺪود 69 ﻧﺎﻧﻮﻣﺘﺮ ﺑﻮده و ﻣﯿﺰان ﺑﻠﻮرﯾﻨﮕﯽ ﺳﺎﺧﺘﺎر ﻧﯿﺰ در ﺣﺪود 85 درﺻﺪ اﺳﺖ. ﺑﺮاﺳﺎس آﻧﺎﻟﯿﺰ tg-dsc، ﭘﺎﯾﺪاری ﮔﺮﻣﺎﯾﯽ ﻧﺎﻧﻮﺳﯿﺎل ﻧﯿﺰ در دﻣﺎﯾﯽ در ﺣﺪود 200 درﺟﻪ ﺳﺎﻧﺘﯽﮔﺮاد ﺑﻮده اﺳﺖ. از آﻧﺠﺎﯾﯽ ﮐﻪ ﮐﺎرﺑﺮد ﻧﺎﻧﻮﺳﯿﺎﻻﺗﯽ اﯾﻦ ﻧﻤﻮﻧﻪ ﻫﺎ در ﺑﺮج ﺧﻨﮏ ﮐﻨﻨﺪه ﺧﺸﮏ ﻣﻮرد اﻧﺘﻈﺎر اﺳﺖ ﻟﺬا ﭘﺎﯾﺪاری ﮔﺮﻣﺎﯾﯽ و دﯾﻨﺎﻣﯿﮑﯽ ﻧﻤﻮﻧﻪ ﻫﺎ از اﻫﻤﯿﺖ زﯾﺎدی ﺑﺮﺧﻮردار اﺳﺖ ﮐﻪ آﻧﺎﻟﯿﺰﻫﺎی tg-dsc اﯾﻦ ﺧﻮاص را ﻣﻮرد ﺗﺎﯾﯿﺪ ﻗﺮار داد.

Nickel Metal Organic Nanostructures Synthesis as New Nanofluids in Cooling Towers

Nano materials are now used in different industries as they can solve many environmental issues. In this line, cooling towers as important parts of petrochemical industries have always received special attention where their role in increasing the environmental issues are taken into account. In this study new samples of organic-metallic nickel nanostructures were synthesized as new nanofluid options in the field of dry cooling towers and using ultrasonic method. Synthetic samples were analyzed by SEM, XRD and FTIR analyses. The results showed that the nanofluids developed have a uniform morphology and that their crystal properties were confirmed by the XRD model. As the application of nanofluids in the dry cooling tower is expected; hence, they can improve the thermal specifications and that the analysis results of TG-DSC confirmed this claim.