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The combined effect of Al2O3 nanofluid and coiled wire inserts in a flat-plate solar collector on heat transfer, thermal efficiency and environmental CO2 characteristics

مؤلف البحث
B Saleh, L Syam Sundar, Ayman A Aly, E Venkata Ramana, KV Sharma, Asif Afzal, Yasser Abdelrhman, Antonio CM Sousa
تاريخ البحث
سنة البحث
2022
مجلة البحث
Arabian Journal for Science and Engineering
الناشر
Springer Berlin Heidelberg
عدد البحث
Volume 47, Issue 7
صفحات البحث
9187-9214
موقع البحث
https://scholar.google.com/scholar?oi=bibs&cluster=11691029539477644009&btnI=1&hl=en
ملخص البحث

The present study experimentally investigated the thermal efficiency, collector area, weight, embodied energy, environmental CO2 emissions of Al2O3/water nanofluid flow in a flat-plate solar collector and with coiled wire turbulators. The experiments were performed at  that is equal to 0.1%, 0.2% and 0.3% and volume flow rate from 120 to 300 L/h. Results indicate that the collector thermal efficiency increased with the increase of particle volume loadings and volume flow rates. The thermal efficiency of the collector with water circulate is 53%, whereas it is enhanced to 65% at  = 0.3% nanofluid, and it is further enhanced to 77% for  = 0.3% nanofluid with 10-mm coiled wire insert in a collector tube at a volume flow rate of 300 L/h. The collector area is declined to 8.66% ( = 0.1%), 14% ( = 0.2%) and 18.66% ( = 0.3%) for nanofluids. The collector area is further reduced to 31.33% for  = 0.3% nanofluid and with a …