Tree Shaped in Channels Parallel and Counter Flow Through Heat Exchanger Heat Transfer and Flow Investigation of Characteristic

A. Bugra COLAK; Isak KOTCİOGLU; Mansour Nasiri KHALAJİ

doi:https://doi.org/10.17350/HJSE19030000117

Makale detayları

Tree Shaped in Channels Parallel and Counter Flow Through Heat Exchanger Heat Transfer and Flow Investigation of Characteristic

Yazarlar:

A. Bugra COLAK | Isak KOTCİOGLU | Mansour Nasiri KHALAJİ

Yayıncı:

Hitit University

Dergi:

Hittite Journal of Science and Engineering 2018 Vol.5 Issue 0, pp.33-49

Belge Tipi:

Makale

Yayın Tarihi:

9/2018

Belge Dili:

İngilizce

Document ID (Org No.):

2000451702

Sıklık:

Üç Aylık

eISSN:

2148-4171

DOI:

https://doi.org/10.17350/HJSE19030000117

Özet:

 

I   n this study, a heat exchanger system capable of working on tree-shaped three-level parallel and counter flow basis was designed and manufactured based on the branched Fractal   like flow channel structure. A similar phylum of heat exchanger on discs onto one surface   of the lower and upper plates and both surfaces of middle plate, 156 Branched-micro channels with cylindrical sections were opened in three levels symmetrically with each other at   different levels and diameters. According to the parallel and counter flow type based open   circuit and closed circuit principle, the fluid enters the system at equal thermal capacity   ratios from the axial or radial connection points and discharges. In the open circuit operating conditions, the heating water is in the temperature range of 35-45°C and the flow rate is   2,0-4,0 lt / min. Similarly, in the closed circuit operating conditions, the heating water is in   temperature range of 45-60°C and the flow rate is 2,0-4,0 lt/ min. During the experimental work, the temperature and hydrodynamic characteristics of the system are controlled   through software written in the MATLAB R2013b package program. Experimental and   numerical analyzes were carried out using ANSYS-Fluent ready packet programs. In the   analysis, in the increasing flow rate, positions of some external and lateral channels are   determined as cause of the decreasing in level of velocity. The result, requirement of designation as the bifurcation geometry divides the mass flow rate equally for each level of   branching, is obtained. The results show that increase in level of branches is not important   on the fluid channels which includes this kind  fractal  branch channel with tree-shaped.   The results also show that, in the branched model heat exchanger, for opened and closed   circuits, parallel flow  increasing branching levels, heating unit and cooling unit  is more   efficient than the counter flow  increasing branching levels heating unit and decreasing   branching level cooling unit  conditions.

Makale detayları

Tree Shaped in Channels Parallel and Counter Flow Through Heat Exchanger Heat Transfer and Flow Investigation of Characteristic

Yazarlar: A. Bugra COLAK | Isak KOTCİOGLU | Mansour Nasiri KHALAJİ

Yayıncı: Hitit University

Dergi: Hittite Journal of Science and Engineering 2018 Vol.5 Issue 0, pp.33-49

Belge Tipi: Makale

Yayın Tarihi: 9/2018

Belge Dili: İngilizce

Document ID (Org No.): 2000451702

Sıklık: Üç Aylık

eISSN: 2148-4171

DOI: https://doi.org/10.17350/HJSE19030000117

Sayı

Yazarlar:

A. Bugra COLAK | Isak KOTCİOGLU | Mansour Nasiri KHALAJİ

Yayıncı:

Hitit University

Dergi:

Hittite Journal of Science and Engineering 2018 Vol.5 Issue 0, pp.33-49

Belge Tipi:

Makale

Yayın Tarihi:

9/2018

Belge Dili:

İngilizce

Document ID (Org No.):

2000451702

Sıklık:

Üç Aylık

eISSN:

2148-4171

DOI:

https://doi.org/10.17350/HJSE19030000117