The effect of nanoparticle type and nanoparticle mass fraction on heat transfer enhancement in pool boiling

Name: The effect of nanoparticle type and nanoparticle mass fraction on heat transfer enhancement in pool boiling
Author: Karimzadehkhouei, M., Shojaeian, M., Şendur, K., Mengüç, Mustafa Pınar, Koşar, A.

İsim	The effect of nanoparticle type and nanoparticle mass fraction on heat transfer enhancement in pool boiling
Yazar	Karimzadehkhouei, M., Shojaeian, M., Şendur, K., Mengüç, Mustafa Pınar, Koşar, A.
Basım Tarihi:	2017-06
Basım Yeri	- Elsevier
Konu	Pool boiling heat transfer, Nanofluids, Titanium oxide nanoparticles, Copper oxide nanoparticles, Heat transfer enhancement
Tür	Süreli Yayın
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	0017-9310
Kayıt Numarası	e0df14a1-a254-43b2-aab7-12bb27f31bf1
Lokasyon	Mechanical Engineering
Tarih	2017-06
Örnek Metin	Determining the heat transfer performance with nanofluids is of cardinal importance in the utilization of nanofluids in thermal systems. This study presents an experimental investigation on nucleate pool boiling heat transfer of TiO2 nanoparticles/water and CuO nanoparticles/water nanofluids on a flat heater plate and aims to reveal the effect of mass fraction of nanoparticles in these nanofluids for attaining the maximum enhancement in pool boiling heat transfer. The effect of mass fraction on boiling heat transfer characteristics was studied for mass fractions varying from 0.001% to 0.2% for the heat flux range between 48.7 and 134.9 kW/m2. The experimental results showed that the heat transfer performance was improved when TiO2 nanoparticles were added to pure water, as base fluid. However, the amount of enhancement was highly dependent on mass fraction. It was realized that the lowest mass fraction (0.001%), namely the dilute TiO2 nanoparticles/water nanofluid, has the largest enhancement (around 15%). A further increase in mass fraction still augments heat transfer compared to pure water, however, the amount of enhancement decreased with mass fraction. Furthermore, the performed visualization showed that the addition of nanoparticles into the base fluid, increased the number of nucleation sites, and the bubbles had a more spherical shape along with a decrease in their size. For CuO/water nanofluids, heat transfer was enhanced at mass fractions larger than 0.001%. This enhancement could be more than 35% for the mass fraction of 0.2 wt.%. This study clearly indicates that the nanoparticle mass fraction corresponding to the best performance is highly dependent on the type of nanoparticle.
DOI	10.1016/j.ijheatmasstransfer.2017.01.116
Cilt	109

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The effect of nanoparticle type and nanoparticle mass fraction on heat transfer enhancement in pool boiling

Yazar Karimzadehkhouei, M., Shojaeian, M., Şendur, K., Mengüç, Mustafa Pınar, Koşar, A.

Basım Tarihi 2017-06

Basım Yeri - Elsevier

Konu Pool boiling heat transfer, Nanofluids, Titanium oxide nanoparticles, Copper oxide nanoparticles, Heat transfer enhancement

Tür Süreli Yayın

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 0017-9310

Kayıt Numarası e0df14a1-a254-43b2-aab7-12bb27f31bf1

Lokasyon Mechanical Engineering

Tarih 2017-06

Örnek Metin Determining the heat transfer performance with nanofluids is of cardinal importance in the utilization of nanofluids in thermal systems. This study presents an experimental investigation on nucleate pool boiling heat transfer of TiO2 nanoparticles/water and CuO nanoparticles/water nanofluids on a flat heater plate and aims to reveal the effect of mass fraction of nanoparticles in these nanofluids for attaining the maximum enhancement in pool boiling heat transfer. The effect of mass fraction on boiling heat transfer characteristics was studied for mass fractions varying from 0.001% to 0.2% for the heat flux range between 48.7 and 134.9 kW/m2. The experimental results showed that the heat transfer performance was improved when TiO2 nanoparticles were added to pure water, as base fluid. However, the amount of enhancement was highly dependent on mass fraction. It was realized that the lowest mass fraction (0.001%), namely the dilute TiO2 nanoparticles/water nanofluid, has the largest enhancement (around 15%). A further increase in mass fraction still augments heat transfer compared to pure water, however, the amount of enhancement decreased with mass fraction. Furthermore, the performed visualization showed that the addition of nanoparticles into the base fluid, increased the number of nucleation sites, and the bubbles had a more spherical shape along with a decrease in their size. For CuO/water nanofluids, heat transfer was enhanced at mass fractions larger than 0.001%. This enhancement could be more than 35% for the mass fraction of 0.2 wt.%. This study clearly indicates that the nanoparticle mass fraction corresponding to the best performance is highly dependent on the type of nanoparticle.

DOI 10.1016/j.ijheatmasstransfer.2017.01.116

Cilt 109