Optimization of the Parameters Affecting the Heat Transfer Enhancement on the Solar Air Collector with Taguchi Method

Yıl 2020, , 527 - 535, 01.06.2020

İsmail Ata , Adem Acır

https://doi.org/10.2339/politeknik.525884

Cited By: 2

Öz

In this study, Taguchi method was used to
optimize the parameters that are related to the heat transfer (Nusselt number)
of solar air collectors having different geometry fins on the absorber surface.
Four different Reynolds numbers (Re=3150, 3800, 4400 ve 5000), two different
fin types (Tip-I and Tip-II)  and two
different tilt angles (α=25° and 40°) were determined as test parameters. The
effects of Reynolds number, collector tilt angle, and absorber surface flap
type on heat transfer of the collector were investigated. The L₈ (4¹x2²)
orthogonal test sequence obtained by using the Taguchi method was aimed to
determine the optimum experimental sequence required for maximum heat transfer.
The optimum experimental sequence for the highest Nu number was obtained as A₄B₂C₁
(Re = 5000, Type-II, α = 25°). ANOVA method was used to analyze the effects of
each experimental parameter on the heat transfer amount. The most effective
parameter was Re number with 73.77% of the experimental results.

Anahtar Kelimeler

Solar air heater, heat transfer, taguchi method, ANOVA

Hava Akışkanlı Güneş Kollektöründe Isı Transferi İyileştirmesine Etki Eden Parametrelerin Taguchi Metodu ile Optimizasyonu

Öz

Bu çalışmada, yutucu yüzeyi üzerinde farklı
geometriye sahip kanatçıklar bulunan hava akışkanlı güneş kollektörlerinde ısı
transferine (Nusselt sayısı) etki eden parametrelerin optimizasyonu için
Taguchi metodu kullanılmıştır. Deney parametresi olarak
dört farklı Reynolds sayısı (Re=3150, 3800, 4400 ve 5000), iki farklı kanatçık
tipi (Tip-I ve Tip-II) ve iki farklı kollektör eğim açısı (α=25° ve 40°)
belirlenmiştir. Üç
farklı deney parametresi olan Reynolds sayısı, kollektör eğim açısı ve yutucu
yüzey kanatçık tipinin kollektörün ısı transferine olan etkileri
incelenmiştir.  Taguchi metodu
kullanılarak elde edilen L₈ (4¹x2²)
dikey deney dizilimi ile ısı transferinin maksimum olması için gerekli olan
optimum deney dizilimi tespit edilmesi amaçlanmıştır. En yüksek Nu sayısı
değeri için optimum deney dizilimi A₄B₂C₁(Re=5000, Tip-II, α=25°) olarak elde edilmiştir. Her bir deney
parametresinin ısı transfer miktarına olan etkilerinin analizi için ANOVA
yöntemi kullanılmıştır. Kullanılan deney parametrelerinden deney sonucuna en
yüksek etki eden parametre %73,77 ile Re sayısı olarak bulunmuştur.

Anahtar Kelimeler

Güneş kollektörü, Isı transferi, Taguchi metodu, ANOVA

Kaynakça

• Kumar A., Saini R.P., Saini J.S., “A review of thermohydraulic performance of artificially roughened solar air heaters”, Renewable and Sustainable Energy Reviews, 37: 100–122, (2014).
• Acır A., Ata İ., Canlı M.E., “Investigation of effect of the circular ring turbulators on heat transfer augmentation and fluid flow characteristic of solar air heater”, Experimental Thermal and Fluid Science, 77: 45-54, (2016).
• Lin W., Ma Z., “Using Taguchi-Fibonacci search method to optimize phase change materials enhanced buildings with integrated solar photovoltaicthermal collectors”,Energy, 106: 23-37, (2016).
• Kuo CF.J., Su TL., Jhang PR., Huang CY., Chiu CH., “Using the Taguchi method and grey relational analysis to optimize the flat-plate collector process with multiple quality characteristics in solar energy collector manufacturing”, Energy, 36: 3554-3562, (2011).
• Kotcioglu I., Cansiz A., Khalaji M.N., “Experimental investigation for optimization of design parameters in a rectangular duct with plate-fins heat exchanger by Taguchi method”, Applied Thermal Engineering, 50: 604-613, (2013).
• Yadav S., Kaushal M., Varun, Siddhartha, “Nusselt number and friction factor correlations for solar air heater duct having protrusions as roughness elements on absorber plate”, Experimental Thermal and Fluid Science, 44: 34–41, (2013).
• Acır A., Ata İ., “A study of heat transfer enhancement in a new solar air heater having circular type turbulators”, Journal of the Energy Institute, 89: 606-616, (2016).
• Chamoli S., Yu P., Kumar A., “Multi-response optimization of geometric and flow parameters in a heat exchanger tube with perforated disk inserts by Taguchi grey relational analysis”, Applied Thermal Engineering, 103: 1339–1350, (2016).
• Bopche S.B., Tandale M.S., “Experimental investigations on heat transfer and frictional characteristics of a turbulator roughened solar air heater duct”, International Journal of Heat and Mass Transfer, 52: 2834–2848, (2009).
• Celik N., Pusat G., Turgut E., “Application of Taguchi method and grey relational analysis on a turbulated heat exchanger”, International Journal of Thermal Sciences, 124: 85–97, (2018).
• Ansari M., Bazargan M., “Optimization of flat plate solar air heater with ribbed surfaces”, Applied Thermal Engineering, 136: 356–363, (2018).
• Acır A., Canlı M.E., Ata İ., Çakıroğlu R., “Parametric optimization of energy and exergy analyses of a novel solar air heater with grey relational analysis” Applied Thermal Engineering, 122: 330–338, (2017).
• Chamoli S. “A Taguchi approach for optimization of flow and geometrical parameters in a rectangular channel roughened with V down perforated baffles”, Case Studies in Thermal Engineering, 5: 59–69, (2015).
• Sahin B., Demir A., “Performance analysis of a heat exchanger having perforated square fins”, Applied Thermal Engineering, 28: 621–632, (2008).
• Sharma S.K., Kalamkar V.R., “Experimental and numerical investigation of forced convective heat transfer in solar air heater with thin ribs”, Solar Energy, 147: 277–291, (2017).
• Pandey N.K., Bajpai V.K., Varun, “Experimental investigation of heat transfer augmentation using multiple arcs with gap on absorber plate of solar air heater”, Solar Energy, 134: 314–326, (2016).
• Kline S.J., McClintock F.A., “Describing uncertainties in single sample experiments, Mechanical Engineering, 75, 3–8, (1953).
• Taguchi G., “Taguchi techniques for quality engineering”, Quality Resources, New York, (1987).
• Günes S., Manay E., Senyiğit E., Ozceyhan V., “A Taguchi approach for optimization of design parameters in a tube with coiled wire inserts”. Applied Thermal Engineering, 31: 2568-2577, (2011).
• Aghaie A.Z., Rahimi A.B., Akbarzadeh A., “A general optimized geometry of angled ribs for enhancing the thermo-hydraulic behavior of a solar air heater channel-A Taguchi approach”, Renewable Energy, 83: 47-54, (2015).