Long distance heat transport device using temperature sensitive magnetic fluid

2020 ◽  
Vol 499 ◽  
pp. 166248 ◽  
Author(s):  
H. Yamaguchi ◽  
T. Bessho
Keyword(s):  
Heat Transport ◽  
Magnetic Fluid ◽  
Temperature Sensitive ◽  
Long Distance ◽  
Transport Device

Long Distance Heat Transfer of Pump-Less Heat Transport Device Using Temperature-Sensitive Magnetic Fluids

2018 ◽  
Vol 2018 (0) ◽  
pp. GS3-1
Author(s):  
Yuhiro IWAMOTO ◽  
Hayaki NAKASUMI ◽  
Keita ODAI ◽  
Yasushi IDO ◽  
Hiroshi YAMAGUCHI
Keyword(s):  
Heat Transfer ◽  
Heat Transport ◽  
Magnetic Fluids ◽  
Temperature Sensitive ◽  
Long Distance ◽  
Transport Device

Experimental study for a heat transport device using magnetic fluid: Improvement by a regenerative thermomagnetic heat cycle

2000 ◽  
Vol 214 (7) ◽  
pp. 981-994
Author(s):  
H Yamaguchi ◽  
I Kobori ◽  
N Kobayashi
Keyword(s):  
Experimental Data ◽  
Experimental Study ◽  
Heat Transport ◽  
Magnetic Fluid ◽  
Pipe Wall ◽  
Temperature Sensitive ◽  
Heat Cycle ◽  
One Dimensional ◽  
Working Principle ◽  
Transport Device

Heat transporting characteristics are investigated experimentally for a heat transport device using a temperature-sensitive magnetic fluid. In the present study, in particular the regenerative thermomagnetic heat cycle is considered by allowing heat conduction in the inner pipe wall of the device. According to the heat transport configuration studied, the lower end of the device is heated while the upper end is cooled isothermally when the device is placed vertically. Experimental results show that a relatively high amount of heat can be transported in comparison with the case of an adiabatic inner pipe wall, indicating that the thermomagnetic heat cycle in the device is improved. The correlation obtained from one-dimensional analysis provides a reasonable means of assessing estimating experimental data when the thermomagnetic heat cycle based on the working principle is satisfied.

A Mini Heat Transport Device Based On Thermo-Sensitive Magnetic Fluid

2007 ◽  
Vol 11 (1-2) ◽  
pp. 201-210 ◽  
Author(s):  
Koji Fumoto ◽  
Hideaki Yamagishi ◽  
Masahiro Ikegawa
Keyword(s):  
Heat Transport ◽  
Magnetic Fluid ◽  
Transport Device

scholarly journals Study for Magnetically Controlled Heat Transport Device Using Magnetic Fluid.

1998 ◽  
Vol 64 (617) ◽  
pp. 85-91 ◽  
Author(s):  
Hiroshi YAMAGUCHI ◽  
Itaru KOBORI ◽  
Yoshinobu ISHIGAKI
Keyword(s):  
Heat Transport ◽  
Magnetic Fluid ◽  
Transport Device

Development of magnetically-driven cooling device with concentric pipe structure

2019 ◽  
Vol 233 (13) ◽  
pp. 4754-4763 ◽  
Author(s):  
H Yamaguchi ◽  
H Yamasaki ◽  
T Bessho
Keyword(s):  
Magnetic Field ◽  
Magnetic Fluid ◽  
Thermal Energy ◽  
Waste Heat ◽  
Flow Behavior ◽  
Temperature Sensitive ◽  
Cooling Device ◽  
External Energy ◽  
Long Distance ◽  
The Magnetic Field

Temperature-sensitive magnetic fluid is a smart material for energy carrier. The most interesting aspect of temperature-sensitive magnetic fluid is that the thermal flow behavior is actively controlled by means of magnetic field. Based on the effect of the temperature-dependent magnetization, temperature-sensitive magnetic fluid can be utilized as an energy conversion system, which can automatically transfer the thermal energy. The advantage in the engineering application can be derived from the fact that there would be entirely no external energy consumption, with which large amount heat can be transported for a long distance without any external power consumption. Taking into account of the advantage, a magnetically-driven cooling device is newly designed for recovering of low- to high-temperature waste heat in the present study. The basic performance of the cooling device with concentric pipe structure is investigated experimentally and data gained in the device is examined in detail in view of magneto-hydrodynamics. In the present study, electromagnet is used as an external magnetic field for the purpose of investigating basic heat transfer characteristics of the present experimental device, so that the magnetic field can be continuously altered. However, it can be easily replaced to a permanent for the practical device without additional electrical energy. The results show that the binary temperature-sensitive magnetic fluid can be circulated freely with a high flow rate of 2.0 × 10−3 m3/min by imposing the magnetic field of 55.8 kA/m. It is found that the newly designed device can transfer thermal energy more than 250 W with overall system efficiency of 11.0% at air temperature of 623 K.

Characteristics of a magnetic fluid heat transport device Part 1: Numerical simulation of flow and heat transport phenomena

2000 ◽  
Vol 214 (4) ◽  
pp. 549-561 ◽  
Author(s):  
H Yamaguchi ◽  
I Kobori ◽  
N Kobayashi
Keyword(s):  
Magnetic Field ◽  
Numerical Analysis ◽  
Heat Transport ◽  
Magnetic Fluid ◽  
Numerical Study ◽  
Thermal Characteristics ◽  
Geometrical Model ◽  
Flow State ◽  
Vortex Zone ◽  
Transport Device

A numerical analysis is conducted in order to study the flow state and thermal characteristics of a magnetic fluid heat transport device. A simple geometrical model of the device is considered in the present numerical study. The highly simplified marker-and-cell (HSMAC) method is adopted for the numerical analysis, where the transient solutions are obtained in the two-dimensional axisymmetric computational plane. From results of the numerical calculation it can be shown that the vortex zone appears when a magnetic field is applied and the configuration of flow associated with the vortex zone changes for variation in the magnetic field, increasing or decreasing the heat transport capability dependent upon the conditions of the device.

Study on Magnetic Heat Transport with Temperature-Sensitive Magnetic Fluid

2016 ◽  
Vol 2016 (0) ◽  
pp. 1102
Author(s):  
Yuhiro IWAMOTO ◽  
Hayaki NAKASUMI ◽  
Yasushi IDO ◽  
Hiroshi YAMAGUCHI
Keyword(s):  
Heat Transport ◽  
Magnetic Fluid ◽  
Temperature Sensitive
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