Experimental and Numerical Investigation of the Effect of Nanofluid Volume Ratio and Particle Size on Heat Transfer in a Shell-and-Tube Heat Exchanger

N.A.

Makale detayları

Experimental and Numerical Investigation of the Effect of Nanofluid Volume Ratio and Particle Size on Heat Transfer in a Shell-and-Tube Heat Exchanger

Yazarlar:

N.A.

Yayıncı:

Cukurova University

Ana Başlıklar:

Akışkan Akışı | Isı ve Kütle Transferinde Hesaplamalı Yöntemler (Hesaplamalı Akışkanlar Dinamiği Dahil) | Makine Mühendisliği (Diğer)

Dergi:

Çukurova Üniversitesi Mühendislik Fakültesi Dergisi Vol.38 Issue 2, pp.531-543

Belge Tipi:

Makale

Yayın Tarihi:

7/2023

Belge Dili:

Türkçe

Document ID (Org No.):

2001296410

pISSN:

2757-9255

Anahtar kelimeler:

Özet:

 The aim of this experimental study is to numerically examine and experimentally verify the effects of different parameters on the heat transfer and flow properties performing in the shell and tube heat exchanger. The parameters used in the study; Re number of the hot fluid, volumetric concentration of the TiO2H2O nanofluid, and nanoparticle size used in the producing of nanofluid. The numerical results of this study were obtained using the ANSYS Fluent Computational Fluid Dynamics program and verified with the experimental results. In the experimental study which is carried out in the first step; the effect of different Re numbers Re1000, 1500, 2000, 2200 on the effectiveness of the shell-tube heat exchanger was investigated. In the second step of the study; the numerical results were verified with the experimental results and the effects of two different parameters the volumetric concentration of the nanofluid 0.2, 0.4, 0.8, 1.6 and the nanoparticle size Dp5, 10, 20 40 nm were investigated on the heat exchanger effectiveness. As a result; when hot fluid inlet temperature is constant Th,in50 , increasing Re number in the range of Re1000-2200 caused a decrease by 6.15 in the heat transfer effectiveness. When volume concentration ratio of the nanofluid was increased in the range of φ0.2-1.6, the heat transfer effectiveness improved by 8.0 for the numerically created TiO2H2O nanofluid with Dp10 nm particle size for constant temperature Th,in50  and constant Re number Re1000. In order to examine the effect of nanoparticle size, 1.0 decrease in heat transfer effectiveness was determined when the particle size was increased in the range of Dp5-40 under the same conditions and at volumetric concentration of φ0.2. Using the data obtained as a result of this study, it is evaluated that higher performance heat exchangers can be designed in the future.

 The aim of this experimental study is to numerically examine and experimentally verify the effects of different parameters on the heat transfer and flow properties performing in the shell and tube heat exchanger. The parameters used in the study; Re number of the hot fluid, volumetric concentration of the TiO2H2O nanofluid, and nanoparticle size used in the producing of nanofluid. The numerical results of this study were obtained using the ANSYS Fluent Computational Fluid Dynamics program and verified with the experimental results. In the experimental study which is carried out in the first step; the effect of different Re numbers Re1000, 1500, 2000, 2200 on the effectiveness of the shell-tube heat exchanger was investigated. In the second step of the study; the numerical results were verified with the experimental results and the effects of two different parameters the volumetric concentration of the nanofluid 0.2, 0.4, 0.8, 1.6 and the nanoparticle size Dp5, 10, 20 40 nm were investigated on the heat exchanger effectiveness. As a result; when hot fluid inlet temperature is constant Th,in50 , increasing Re number in the range of Re1000-2200 caused a decrease by 6.15 in the heat transfer effectiveness. When volume concentration ratio of the nanofluid was increased in the range of φ0.2-1.6, the heat transfer effectiveness improved by 8.0 for the numerically created TiO2H2O nanofluid with Dp10 nm particle size for constant temperature Th,in50  and constant Re number Re1000. In order to examine the effect of nanoparticle size, 1.0 decrease in heat transfer effectiveness was determined when the particle size was increased in the range of Dp5-40 under the same conditions and at volumetric concentration of φ0.2. Using the data obtained as a result of this study, it is evaluated that higher performance heat exchangers can be designed in the future.

 The aim of this experimental study is to numerically examine and experimentally verify the effects of different parameters on the heat transfer and flow properties performing in the shell and tube heat exchanger. The parameters used in the study; Re number of the hot fluid, volumetric concentration of the TiO2H2O nanofluid, and nanoparticle size used in the producing of nanofluid. The numerical results of this study were obtained using the ANSYS Fluent Computational Fluid Dynamics program and verified with the experimental results. In the experimental study which is carried out in the first step; the effect of different Re numbers Re1000, 1500, 2000, 2200 on the effectiveness of the shell-tube heat exchanger was investigated. In the second step of the study; the numerical results were verified with the experimental results and the effects of two different parameters the volumetric concentration of the nanofluid 0.2, 0.4, 0.8, 1.6 and the nanoparticle size Dp5, 10, 20 40 nm were investigated on the heat exchanger effectiveness. As a result; when hot fluid inlet temperature is constant Th,in50 , increasing Re number in the range of Re1000-2200 caused a decrease by 6.15 in the heat transfer effectiveness. When volume concentration ratio of the nanofluid was increased in the range of φ0.2-1.6, the heat transfer effectiveness improved by 8.0 for the numerically created TiO2H2O nanofluid with Dp10 nm particle size for constant temperature Th,in50  and constant Re number Re1000. In order to examine the effect of nanoparticle size, 1.0 decrease in heat transfer effectiveness was determined when the particle size was increased in the range of Dp5-40 under the same conditions and at volumetric concentration of φ0.2. Using the data obtained as a result of this study, it is evaluated that higher performance heat exchangers can be designed in the future.

 Bu deneysel çalışmanın amacı, farklı parametrelerin gövde borulu ısı değiştiricisinde meydana gelen ısı transferine ve akış özelliklerine etkisini sayısal olarak incelemek ve deneysel olarak doğrulamaktır. Çalışmada kullanılan parametreler; sıcak akışkan Re sayısı, TiO2H2O nanoakışkanın hacimsel konsantrasyonu ve nanoakışkan oluşturulmasında kullanılan nanoparçacık boyutudur. Çalışmanın sayısal sonuçları ANSYS Fluent Hesaplamalı Akışkanlar Dinamiği programını kullanılarak elde edilmiş ve deneysel sonuçlarla doğrulanmıştır. Çalışmanın birinci aşamasında yapılan deneysel çalışmada; farklı Re sayılarının Re1000, 1500, 2000, 2200 gövde borulu ısı değiştiricisi etkinliğine olan etkisi incelenmiştir. Çalışmanın ikinci aşamasında; sayısal sonuçlar deney sonuçları ile doğrulanmış ve farklı iki parametrenin nanoakışkan hacimsel konsantrasyonu 0,2, 0,4, 0,8, 1,6 ve nanoparçacık boyutu Dp5, 10, 20 40 nm ısı değiştiricisi etkinliğine olan etkisi incelenmiştir. Sonuç olarak; sıcak akışkan giriş sıcaklığı Tsıcak,giriş50 de sabit iken Re sayısı Re1000-2200 aralığında arttırıldığında ısı transfer etkinliğinde 6,15 azalma tespit edilmiştir. Sayısal olarak oluşturulan Dp10 nm parçacık boyutlu TiO2H2O nanoakışkanı için sabit giriş sıcaklığı Tsıcak,giriş50 , sabit Re sayısında Re1000 nanoparçacık hacimsel konsantrasyonu φ0,2-1,6 aralığında arttırıldığında ısı transfer etkinliğinde 8 artış tespit edilmiştir. Nanoparçacık boyutunun etkisini incelemek için aynı şartlarda ve φ0,2 hacimsel konsantrasyonda parçacık boyutu Dp5-40 aralığında arttırıldığında ısı transfer etkinliğinde 1 azalma tespit edilmiştir. Bu çalışma sonucunda elde edilen veriler kullanılarak gelecekte, daha yüksek performanslı ısı değiştiricilerin tasarlanabileceği değerlendirilmiştir.

Makale detayları

Experimental and Numerical Investigation of the Effect of Nanofluid Volume Ratio and Particle Size on Heat Transfer in a Shell-and-Tube Heat Exchanger

Yazarlar:

N.A.

Yayıncı:

Cukurova University

Ana Başlıklar:

Akışkan Akışı | Isı ve Kütle Transferinde Hesaplamalı Yöntemler (Hesaplamalı Akışkanlar Dinamiği Dahil) | Makine Mühendisliği (Diğer)

Dergi:

Çukurova Üniversitesi Mühendislik Fakültesi Dergisi Vol.38 Issue 2, pp.531-543

Belge Tipi:

Makale

Yayın Tarihi:

7/2023

Belge Dili:

Türkçe

Document ID (Org No.):

2001296410

pISSN:

2757-9255

Shell-and-tube heat exchanger

Heat transfer

Heat exchanger effectiveness

NanofluidGövde borulu ısı değiştiricisi

Isı transferi

Isı değiştiricisi etkinliği

Nanoakışkan

Sayı

Makale detayları

Yazarlar: N.A.

Yayıncı: Cukurova University

Ana Başlıklar: Akışkan Akışı | Isı ve Kütle Transferinde Hesaplamalı Yöntemler (Hesaplamalı Akışkanlar Dinamiği Dahil) | Makine Mühendisliği (Diğer)

Dergi: Çukurova Üniversitesi Mühendislik Fakültesi Dergisi Vol.38 Issue 2, pp.531-543

Belge Tipi: Makale

Yayın Tarihi: 7/2023

Belge Dili: Türkçe

Document ID (Org No.): 2001296410

pISSN: 2757-9255

Sayı

Yazarlar:

N.A.

Yayıncı:

Cukurova University

Ana Başlıklar:

Akışkan Akışı | Isı ve Kütle Transferinde Hesaplamalı Yöntemler (Hesaplamalı Akışkanlar Dinamiği Dahil) | Makine Mühendisliği (Diğer)

Dergi:

Çukurova Üniversitesi Mühendislik Fakültesi Dergisi Vol.38 Issue 2, pp.531-543

Belge Tipi:

Makale

Yayın Tarihi:

7/2023

Belge Dili:

Türkçe

Document ID (Org No.):

2001296410

pISSN:

2757-9255