Hidrofobik çark yüzeylerinin santrifüj tip bir pompa performansına etkilerinin deneysel incelenmesi

Yıl 2021, , 267 - 274, 01.12.2020

Mustafa Özbey , Mevlüt Gürbüz , Uğur Karakurt

https://doi.org/10.17341/gazimmfd.551887

Cited By: 3

Öz

Nüfusun ve
sanayileşmenin artmasına paralel olarak her geçen gün artan elektrik enerjisi ihtiyacı
mevcut enerjiyi daha verimli kullanmayı gerekli kılmaktadır. Bundan dolayı, bu
çalışmada santrifüj tip bir pompa çarkının mevcut tasarımı değiştirilmeden
ıslak yüzeyleri hidrofobik özellik kazandırılacak şekilde kaplanarak pompa
kapasitesi ve verimi üzerine etkileri deneysel olarak incelenmiştir. Çarkın
ıslak yüzeyleri floroidetilenpropilen (FEP), perfloroalkoksi (PFA) ve politetrafloretilen
(PTFE) olmak üzere 3 farklı karbon bazlı polimer malzeme ile kaplanmıştır. Kaplanan yüzeylerin temas açısı
sırasıyla 105^o, 110^o ve 95^o ölçülerek hidrofobikliği
belirlenmiştir. Deneysel olarak pompa performans eğrileri elde edilerek hidrofobik
çark yüzeylerinin kaplamasız konvansiyonel çarka kıyasla pompa özgül hızını
yaklaşık %10 düşürdüğü, dolayısıyla kapasitesini %10, verimini ise sırasıyla
yaklaşık %5, %5,3 ve %4 artırdığı belirlenmiştir.

Anahtar Kelimeler

Santrifüj pompa, hidrofobik yüzey, pompa performansı, hidrolik verim, polimer kaplama

Kaynakça

• Europump (European Association of Pump Manufacturers), https://www.europump.org/
• Perez J., Chiva S., Segala W., Morales R., Negrao C., Julia E. and Hernandez L., Performance analysis of flow in a impeller diffuser centrifugal pumps using CFD: Simulation and experimental data comparisons, European Conference on Computational Fluid Dynamics ECCOMAS CFD 2010, Lisbon, Portugal, 1-18, 2010. 3. Golcu M., Pancar Y. and Sekmen Y., Energy saving in a deep well pump with splitter blade, Energy Conversion Management, 47(5), 638–651, 2006.
• Golcu M., Pancar Y. and Sekmen Y., Energy saving in a deep well pump with splitter blade, Energy Conversion Management, 47(5), 638–651, 2006.
• Pochyly F., Fialová S., Kozubková M., Zavadil L., Study of the adhesive coefficient effect on the hydraulic losses and cavitation, International Journal of Fluid Machinery and Systems, 3(4), 386-395, 2010.
• Yuan X. D., Yang X. J., A study on friction and wear properties of PTFE coatings under vacuum conditions, Wear, 269, 291–297, 2010.
• Zhang P., Lv F.Y., A review of the recent advances in superhydrophobic surfaces and the emerging energy-related applications, Energy 82, 1068-1087, 2015.
• Ou J., Rothstein J. P., Direct velocity measurements of the flow past drag reducing ultrahydrophobic surfaces, Physics of Fluids, 17(10), 10.1063/1.2109867, 2005.
• Choi C. H., Ulmanella U., Kim J., Ho C. M., Kim C. J., Effective slip and friction reduction in nanograted superhydrophobic microchannels, Physics of Fluids,18(8), 10.1063/1.2337669, 2006.
• Daniello R. J., Waterhouse N. E., Rothstein J. P., Drag reduction in turbulent flows over superhydrophobic surfaces, Physics of Fluids, 21(8), 10.1063/1.3207885, 2009.
• Park H., Sun G., Kim C. J., Superhydrophobic turbulent drag reduction as a function of surface grating parameters, Journal of Fluid Mechanics, 747, 722-734, 2014.
• Truesdell R., Mammoli A., Vorobieff P., van Swol F., Brinker C. J., Drag reduction on a patterned superhydrophobic surface, Physical Review Letters, 97(4), 044504, 2006.
• Moaven K., Rad M., Taeibi-Rahni M., Experimental investigation of viscous drag reduction of superhydrophobic nano-coating in laminar and turbulent flows, Experimental Thermal and Fluid Science, 51:239-243, 2013.
• Volkov A. V., Parygin A. G., Lukin M. V., Ryzhenkov A. V., Khovanov G. P., Naumov A. V., Soukal J., Pochyly F., Fialova S., Analysis of the effect of hydrophobic properties of surfaces in the flow part of centrifugal pumps on their operational performance, Thermal Engineering, 62(11), 817–824, 2015. 14. Volkov A. V., Parygin A. G., Naumov A. V., Vikhlyantsev A. A., Šoukal J., Sedlár M., Komárek M., Influence of hydrophibization of ımpellers of centrifugal pumps on their operating characteristics, thermal engineering, 63(12), 841–847, 2016. 15. Kocaaslan O., Ozgoren M., Aksoy M. H. and Babayigit O., Experimental and numerical investigation of coating effect on pump impeller and volute, Journal of Applied Fluid Mechanics, 9(5), 2475-2487, 2016.
• Volkov A. V., Parygin A. G., Naumov A. V., Vikhlyantsev A. A., Šoukal J., Sedlár 14. M., Komárek M., Influence of hydrophibization of ımpellers of centrifugal pumps on their operating characteristics, thermal engineering, 63(12), 841–847, 2016.
• Kocaaslan O., Ozgoren M., Aksoy M. H. and Babayigit O., Experimental and numerical investigation of coating effect on pump impeller and volute, Journal of Applied Fluid Mechanics, 9(5), 2475-2487, 2016.
• Holman J. P., Gajda W. J., Experimental methods for engineers, McGraw-Hill, 5th Edition, 1989.