STUDY ON ENHANCED HEAT TRANSFER FEATURES OF NANO-MAGNETIC FLUID HEAT PIPE UNDER MAGNETIC FIELD

2015 ◽  
Vol 33 (1) ◽  
pp. 137-144 ◽  
Author(s):  
Xin-hua WANG ◽  
Yu-lin JIAO ◽  
Yong-chao NIU ◽  
Jie YANG
Keyword(s):  
Magnetic Field ◽  
Heat Transfer ◽  
Heat Pipe ◽  
Magnetic Fluid ◽  
Enhanced Heat Transfer

The Properties of Heat Transfer Research for the Vacuum Heat Pipe in the Magnetic Field

2012 ◽  
Vol 614-615 ◽  
pp. 245-252
Author(s):  
Yun Feng Zhang ◽  
Jian Jun An ◽  
Zheng Rong Chang
Keyword(s):  
Magnetic Field ◽  
Heat Transfer ◽  
Heat Pipe ◽  
Magnetic Fluid ◽  
Heat Pipes ◽  
Test System ◽  
The Other ◽  
Heat Transfer Characteristics ◽  
Heat Transfer Efficiency ◽  
The Magnetic Field

In view of the highly heat exchanger efficient of heat pipe, two vacuum heat pipes of water and Fe3O4-water were prepared and test system was designed to test the heat transfer efficiency of them when they are within and without magnetic field. The experimental results showed that the heat exchange of heat pipe with magnetic fluid was more efficient than the other one. According to the results and combine the physical properties of two kinds of refrigerant, analyze the heat transfer characteristics of the magnetic fluid in magnetic field.

Investigation of Enhancement in Pool Boiling Heat Transfer of a Binary Temperature Sensitive Magnetic Fluid

2013 ◽  
Author(s):  
Giti Karimi-Moghaddam ◽  
Richard D. Gould ◽  
Subhashish Bhattacharya
Keyword(s):  
Magnetic Field ◽  
Heat Transfer ◽  
Magnetic Fluid ◽  
Boiling Heat Transfer ◽  
Magnetic Particles ◽  
Pool Boiling ◽  
Simulation Software ◽  
Temperature Sensitive ◽  
Magnetic Field Effects ◽  
Pool Boiling Heat Transfer

In this paper, the performance of pool boiling heat transfer using a binary temperature sensitive magnetic fluid in the presence of a non-uniform magnetic field is investigated numerically. By using a binary magnetic fluid, enhanced boiling heat transfer is obtained by thermomagnetic convection without deterioration of properties of the fluid. This work is aimed at gaining a qualitative understanding the magnetic field effects on boiling heat transfer enhancement of magnetic fluids. In order to accomplish this, the boiling process and the effects of position of the external magnetic field on flow pattern and heat transfer are investigated in a 2D rectangular domain using COMSOL Multiphysics simulation software. Finally, the boiling curves for a binary temperature sensitive magnetic fluid and its base fluid (without magnetic particles) are compared for various applied heat flux magnitudes.

scholarly journals Effect of magnetic field on heat transfer in rectangular duct flow of a magnetic fluid

2010 ◽  
Vol 9 ◽  
pp. 190-193 ◽  
Author(s):  
Masaaki Motozawa ◽  
Jia Chang ◽  
Tatsuo Sawada ◽  
Yasuo Kawaguchi
Keyword(s):  
Magnetic Field ◽  
Heat Transfer ◽  
Magnetic Fluid ◽  
Duct Flow ◽  
Rectangular Duct

Effects of Surface Coating of Nanoparticles on Thermal Performance of Open Loop Pulsating Heat Pipes

2012 ◽  
Author(s):  
Mehdi Taslimifar ◽  
Maziar Mohammadi ◽  
Ali Adibnia ◽  
Hossein Afshin ◽  
Mohammad Hassan Saidi ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Heat Transfer ◽  
Heat Pipe ◽  
Thermal Performance ◽  
Surface Coating ◽  
Heat Pipes ◽  
Open Loop ◽  
Working Fluid ◽  
Pulsating Heat Pipe ◽  
Performance Of Heat Transfer

Homogenous dispersing of nanoparticles in a base fluid is an excellent way to increase the thermal performance of heat transfer devices especially Heat Pipes (HPs). As a wickless, cheap and efficient heat pipe, Pulsating Heat Pipes (PHPs) are important candidates for thermal application considerations. In the present research an Open Loop Pulsating Heat Pipe (OLPHP) is fabricated and tested experimentally. The effects of working fluid namely, water, Silica Coated ferrofluid (SC ferrofluid), and ferrofluid without surface coating of nanoparticles (ferrofluid), charging ratio, heat input, and application of magnetic field on the overall thermal performance of the OLPHPs are investigated. Experimental results show that ferrofluid has better heat transport capability relative to SC ferrofluid. Furthermore, application of magnetic field improves the heat transfer performance of OLPHPs charged with both ferrofluids.

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