Dairesel bir Mikrokanalda SiO2 Nanoakışkanların Isı Transferi ve Basınç Düşümü Karakteristiklerinin İncelenmesi

Bayram ŞAHİN; Hourieh BAYRAMİAN; Emre MANDEV; Eyüphan MANAY

Makale detayları

Dairesel bir Mikrokanalda SiO2 Nanoakışkanların Isı Transferi ve Basınç Düşümü Karakteristiklerinin İncelenmesi

Yazarlar:

Bayram ŞAHİN | Hourieh BAYRAMİAN | Emre MANDEV | Eyüphan MANAY

Yayıncı:

Igdir University

Ana Başlıklar:

Diğer mühendislik dalları

Dergi:

Journal of the Institute of Science and Technology 2019 Vol.9 Issue 1, pp.446-457

Belge Tipi:

Makale

Yayın Tarihi:

2/2019

Belge Dili:

Türkçe

Document ID (Org No.):

2000465476

Sıklık:

Üç Aylık

eISSN:

2536-4618

Özet:

 


Increasing
the heat transfer in industrial applications is a frequently encountered
engineering problem that requires continuous improvement. In recent years, a
commonly used method of heat transfer enhancement is the useing nanofluids.
Adding nanometer-sized particles into the working fluid is an application that
improves the heat transfer performance of the fluid. In this work, thermal
performance and pressure drops of SiO2-pure water nanofluids in a
circular microchannel with a diameter of 700 μm were investigated
experimentally under constant heat flow boundary conditions. In the study,
volumetric ratios of nanofluids were 0.2%, 0.4%, 0.8% and 1.2%.  These nanofluids were prepared by adding SiO2
nanoparticles of 15 nm particle diameter to purified water. The values of
heat transfer coefficient, Nusselt number, pressure drop and friction factor
were determined with temperature, flow rate and pressure measurements. In
addition, the thermal conductivity and viscosity properties required for
thermal performance and pressure drop analysis have been experimentally
determined. As a result, it was observed that Nusselt number increased with
increasing Reynolds number and volumetric ratio of particle. With the use of
nanofluid, the maximum heat transfer enhancement was about 20% at Re = 2160 and
1.2% particle volume fraction compared to pure water. While the friction factor
values of all fluids were very close to each other in the high Reynolds
numbers, the effect of the volumetric particle ratio on the friction factor
became more clear as the Reynolds number decreased. At all volume ratios it was
determined that the friction factor value of the nanofluids is higher than the
pure water friction factor value.

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Makale detayları

Dairesel bir Mikrokanalda SiO2 Nanoakışkanların Isı Transferi ve Basınç Düşümü Karakteristiklerinin İncelenmesi

Yazarlar: Bayram ŞAHİN | Hourieh BAYRAMİAN | Emre MANDEV | Eyüphan MANAY

Yayıncı: Igdir University

Ana Başlıklar: Diğer mühendislik dalları

Dergi: Journal of the Institute of Science and Technology 2019 Vol.9 Issue 1, pp.446-457

Belge Tipi: Makale

Yayın Tarihi: 2/2019

Belge Dili: Türkçe

Document ID (Org No.): 2000465476

Sıklık: Üç Aylık

eISSN: 2536-4618

Sayı

Yazarlar:

Bayram ŞAHİN | Hourieh BAYRAMİAN | Emre MANDEV | Eyüphan MANAY

Yayıncı:

Igdir University

Ana Başlıklar:

Diğer mühendislik dalları

Dergi:

Journal of the Institute of Science and Technology 2019 Vol.9 Issue 1, pp.446-457

Belge Tipi:

Makale

Yayın Tarihi:

2/2019

Belge Dili:

Türkçe

Document ID (Org No.):

2000465476

Sıklık:

Üç Aylık

eISSN:

2536-4618