Tamer BAĞATUR, Fevzi ÖNEN, Necati KAYAALP

Testing of System Performance for Different Aerator Configuration Using Venturi

A venturi tube or pipe part or device allows air bubbles to be inserted into flowing water from air inlet holes and so increases dissolved oxygen (DO) levels in water. Therefore, the aim of this paper is to evaluate system design and experimental results related to configuration of venturi tube in air vacuum and aeration process. Different aerator modules constructed using venturi tubes connected in either single or double in parallel (with single or double outlet pipe line) were evaluated and compared for their air flowrate, vacuum capacity, oxygen transfer coefficients (OTC), standard oxygen transfer rate (SOTR), and standard oxygenation efficiency (SOE) determined by clean water tests. The experimental results indicated that the double parallel design (connected to a single outlet pipe line) generally performed better than the single and double parallel (connected to a double outlet pipe line) design in terms of transferring oxygen into water.

Anahtar Kelimeler:

Venturi, System performance, air-water, two phase flow, Oxygen transfer

Venturi Havalandırıcı Konfigrasyonu İçin Sistem Performansının Test Edilmesi

Bir venturi tüpü veya boru parçası veya aygıtı, atmosferdeki havanın venturi hava girişi deliklerinden boru akımına geçişini sağlar ve böylece sudaki çözünmüş oksijen (ÇO) seviyelerini arttırır. Bu deneysel çalışmanın amacı venturi ile havalandırma sisteminde venturi boru parçasının konfigürasyonu ile ilgili en verimli sistem tasarımını yapmak ve elde edilen deney sonuçları değerlendirmektir. Tekli veya çiftli paralel (tekli veya çift çıkış boru hattı ile) bağlanan venturi tüpleri kullanılarak sistemi kurulan farklı havalandırma modülleri; hava akış hızı, vakum kapasitesi, oksijen transfer katsayıları (OTK), standart oksijen transfer hızı (SOTH) ve standart oksijenleme etkinliği (SOE) temiz su testleri ile belirlendi. Elde edilen deneysel sonuçlar göre, çiftli paralel tasarımın (tek bir çıkış borusuna bağlı olarak) genel olarak çözünmüş oksijenin suya aktarımı açısından tek ve çiftli paralelden (çift çıkışlı boru hattına bağlı) daha iyi performans gösterdiği gözlemlendi

Keywords:

Venturi, Sistem performansı, hava-su, iki fazlı akım, Oksijen transferi,

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