Split klimalarda kullanılan ısı değiştiricilerinde kanatçık etkisinin sayısal analizi

Year 2020, Volume: 26 Issue: 4, 689 - 699, 20.08.2020

Berkay Balkanlı Ali Yurddaş Yiğit Aksoy

Abstract

Bu çalışmada, gündelik hayatımızda en çok kullanılan iklimlendirme sistem uygulamalarından biri olan split klimalardaki ısı değiştiricileri ele alınmıştır. En yaygın kullanılan ısı değiştiricisi tipi ele alınmıştır. Oluşturulan matematiksel modelin doğrulaması yapılmıştır. Gerçek çalışma şartlarına en yakın koşullar altında inceleme yapılarak tasarım parametrelerinin ısıl kapasiteye ve sistem verimliliğine olan etkileri sayısal olarak incelenmiştir. Tasarım parametreleri geniş bir çalışma alanına sahip olmakla birlikte, bu çalışma kapsamında; boru çapı, borular arası dikey/yatay mesafe, kanatlar arası boşluk ve kanat et kalınlığı değişimi durumları için inceleme yapılmıştır. Düz kanat borulu ısı değiştiricisi modelinde, laminar akış ve belirli sınır koşulları altında tasarımsal değişimlerin ısı transferi, basınç düşüşü ve akış hızı üzerindeki etkileri Sonlu Hacimler Metodu kullanılarak incelenmiştir. Yapılan analizler sonucunda bulunan Nusselt sayısı, taşınım katsayısına bağlı olarak gerçekleşen ısı transferi miktarına göre optimum tasarım parametreleri iyileştirme önerisi olarak sunulmuştur.

Keywords

Split klima, Isı değiştiricisi, Kanatçık etkisi, Hesaplamalı akışkanlar dinamiği (HAD), Sonlu hacimler metodu

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