ENHANCING STORAGE PERFORMANCE IN A TUBE-IN SHELL STORAGE UNIT BY ATTACHING A CONDUCTING FIN TO THE BOTTOM OF THE TUBE

Orhan AYDIN, (Karadeniz Teknik Üniversitesi, Makine Mühendisliği Bölümü, Trabzon, Türkiye)
Mete AVCI, (Karadeniz Teknik Üniversitesi, Makine Mühendisliği Bölümü, Trabzon, Türkiye)
M. Yusuf YAZICI, (Karadeniz Teknik Üniversitesi, Makina Mühendisliği Bölümü, Trabzon, Türkiye)
Mithat AKGÜN (Ordu University Vocational School of Technical Science)
Isı Bilimi ve Tekniği Dergisi
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Yıl: 2018 Cilt: 38 Sayı: 2 Sayfa Aralığı: 1 - 13 Metin Dili: İngilizce İndeks Tarihi: 23-05-2019

ENHANCING STORAGE PERFORMANCE IN A TUBE-IN SHELL STORAGE UNIT BY ATTACHING A CONDUCTING FIN TO THE BOTTOM OF THE TUBE

Öz:
In this experimental study, melting behavior of paraffin in a storage unit of the horizontal shell-and-tube type is investigated. In order to enhance melting rate, a conducting fin is attached to the bottom of the inner tube. At first, the tube without a fin is tested. Then, the tubes with fin of four different heights (h=10, 20, 30 and 40 mm) are examined. Experiments are conducted at constant values of the inlet temperature and the inlet mass flow rate of the heat transfer fluid (HTF). As phase change material (PCM), paraffin (solidification range of 56−58 C) is used. For each case tested, transient variations of the temperature at some specific radial points inside the phase change material (PCM) are obtained. For the case without a fin, natural convection recirculation is shown to be weak in the lower half region of the annulus when compared to that in the upper half region. Results show that attaching a conducting fin to the bottom of the inner tube intensifies the recirculation of liquid PCM in the lower half and, in follows, enhances the melting rate about 72.8% for the fin height of 40 mm when compared to without fin (h=0 mm)
Anahtar Kelime:

Konular: Mühendislik, Makine Termodinamik Mühendislik, Kimya Mühendislik, Hava ve Uzay

HALKASAL GEOMETRİYE SAHİP SİLİNDİRİK BİR DEPONUN ISI DEPOLAMA PERFORMANSININ İYİLEŞTİRİLMESİ: KANATÇIK İLAVESİ

Öz:
Bu çalışmada, yatay olarak konumlandırılan silindirik halka aralık bir geometri içerisindeki faz değiştiren maddenin (FDM) erime (şarj) davranışı deneysel olarak incelenmiştir. Erime sürecinin iyileştirilmesi amacıyla ısı transfer borusuna kanatçık ilavesi yapılmıştır. Kanatçıksız durum (h=0 mm) ve dört farklı kanatçık yüksekliği (h=10, 20, 30 and 40 mm) için deneyler gerçekleştirilmiştir. Deneyler, sabit bir hacimsel debide ve tek bir akışkan giriş sıcaklığında yapılmıştır. FDM olarak katılaşma sıcaklığı 56−58 C olan parafin kullanılmıştır. Her bir durum (h) için FDM içerisinde tanımlanan radyal yerel noktalardan zaman bağımlı sıcaklık ölçümleri alınmıştır. Kanatçıksız duruma ait veriler incelendiğinde halka aralığın alt yarı bölgesindeki doğal taşınım mekanizmasının üst yarı bölgeye kıyasla daha zayıf olduğu görülmüştür. Sonuç olarak, ısı transfer borusunun (iç boru) alt kısmına yapılan kanatçık ilavesinin halka aralığın alt bölgesindeki sıvı FDM sirkülasyonunu kuvvetlendirdiği görülmüştür. Kanatçık yükseklikliğinin maksimum olduğu durum (h=40 mm) için erime hızında kanatçıksız duruma (h=0 mm) kıyasla %72.8 oranında iyileşme sağlandığı ortaya konmuştur.
Anahtar Kelime:

Konular: Mühendislik, Makine Termodinamik Mühendislik, Kimya Mühendislik, Hava ve Uzay
Belge Türü: Makale Makale Türü: Araştırma Makalesi Erişim Türü: Erişime Açık
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APA AYDIN O, AVCI M, YAZICI M, AKGÜN M (2018). ENHANCING STORAGE PERFORMANCE IN A TUBE-IN SHELL STORAGE UNIT BY ATTACHING A CONDUCTING FIN TO THE BOTTOM OF THE TUBE. , 1 - 13.
Chicago AYDIN Orhan,AVCI Mete,YAZICI M. Yusuf,AKGÜN Mithat ENHANCING STORAGE PERFORMANCE IN A TUBE-IN SHELL STORAGE UNIT BY ATTACHING A CONDUCTING FIN TO THE BOTTOM OF THE TUBE. (2018): 1 - 13.
MLA AYDIN Orhan,AVCI Mete,YAZICI M. Yusuf,AKGÜN Mithat ENHANCING STORAGE PERFORMANCE IN A TUBE-IN SHELL STORAGE UNIT BY ATTACHING A CONDUCTING FIN TO THE BOTTOM OF THE TUBE. , 2018, ss.1 - 13.
AMA AYDIN O,AVCI M,YAZICI M,AKGÜN M ENHANCING STORAGE PERFORMANCE IN A TUBE-IN SHELL STORAGE UNIT BY ATTACHING A CONDUCTING FIN TO THE BOTTOM OF THE TUBE. . 2018; 1 - 13.
Vancouver AYDIN O,AVCI M,YAZICI M,AKGÜN M ENHANCING STORAGE PERFORMANCE IN A TUBE-IN SHELL STORAGE UNIT BY ATTACHING A CONDUCTING FIN TO THE BOTTOM OF THE TUBE. . 2018; 1 - 13.
IEEE AYDIN O,AVCI M,YAZICI M,AKGÜN M "ENHANCING STORAGE PERFORMANCE IN A TUBE-IN SHELL STORAGE UNIT BY ATTACHING A CONDUCTING FIN TO THE BOTTOM OF THE TUBE." , ss.1 - 13, 2018.
ISNAD AYDIN, Orhan vd. "ENHANCING STORAGE PERFORMANCE IN A TUBE-IN SHELL STORAGE UNIT BY ATTACHING A CONDUCTING FIN TO THE BOTTOM OF THE TUBE". (2018), 1-13.
APA AYDIN O, AVCI M, YAZICI M, AKGÜN M (2018). ENHANCING STORAGE PERFORMANCE IN A TUBE-IN SHELL STORAGE UNIT BY ATTACHING A CONDUCTING FIN TO THE BOTTOM OF THE TUBE. Isı Bilimi ve Tekniği Dergisi, 38(2), 1 - 13.
Chicago AYDIN Orhan,AVCI Mete,YAZICI M. Yusuf,AKGÜN Mithat ENHANCING STORAGE PERFORMANCE IN A TUBE-IN SHELL STORAGE UNIT BY ATTACHING A CONDUCTING FIN TO THE BOTTOM OF THE TUBE. Isı Bilimi ve Tekniği Dergisi 38, no.2 (2018): 1 - 13.
MLA AYDIN Orhan,AVCI Mete,YAZICI M. Yusuf,AKGÜN Mithat ENHANCING STORAGE PERFORMANCE IN A TUBE-IN SHELL STORAGE UNIT BY ATTACHING A CONDUCTING FIN TO THE BOTTOM OF THE TUBE. Isı Bilimi ve Tekniği Dergisi, vol.38, no.2, 2018, ss.1 - 13.
AMA AYDIN O,AVCI M,YAZICI M,AKGÜN M ENHANCING STORAGE PERFORMANCE IN A TUBE-IN SHELL STORAGE UNIT BY ATTACHING A CONDUCTING FIN TO THE BOTTOM OF THE TUBE. Isı Bilimi ve Tekniği Dergisi. 2018; 38(2): 1 - 13.
Vancouver AYDIN O,AVCI M,YAZICI M,AKGÜN M ENHANCING STORAGE PERFORMANCE IN A TUBE-IN SHELL STORAGE UNIT BY ATTACHING A CONDUCTING FIN TO THE BOTTOM OF THE TUBE. Isı Bilimi ve Tekniği Dergisi. 2018; 38(2): 1 - 13.
IEEE AYDIN O,AVCI M,YAZICI M,AKGÜN M "ENHANCING STORAGE PERFORMANCE IN A TUBE-IN SHELL STORAGE UNIT BY ATTACHING A CONDUCTING FIN TO THE BOTTOM OF THE TUBE." Isı Bilimi ve Tekniği Dergisi, 38, ss.1 - 13, 2018.
ISNAD AYDIN, Orhan vd. "ENHANCING STORAGE PERFORMANCE IN A TUBE-IN SHELL STORAGE UNIT BY ATTACHING A CONDUCTING FIN TO THE BOTTOM OF THE TUBE". Isı Bilimi ve Tekniği Dergisi 38/2 (2018), 1-13.
Sayfa Oluşturulma Tarihi
23-04-2024 7:53

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