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

Year 2020, , 527 - 535, 01.06.2020

İsmail Ata , Adem Acır

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

Cited By: 2

Abstract

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.

Keywords

Solar air heater, heat transfer, taguchi method, ANOVA

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

Abstract

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.

Keywords

Güneş kollektörü, Isı transferi, Taguchi metodu, ANOVA

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