Liquid Cooled Induction Motor: Computational Design, Heat Transfer Analysis, Parametric Study, and Performance Testing

2013 ◽  
Vol 2 (1) ◽  
pp. 1-6 ◽  
Author(s):  
Jenwit Soparat ◽  
Chi-na Benyajati
Keyword(s):  
Heat Transfer ◽  
Induction Motor ◽  
Parametric Study ◽  
Performance Testing ◽  
Computational Design ◽  
Heat Transfer Analysis ◽  
And Performance

scholarly journals Fluid Choice Based on Thermal Model and Performance Testing for Direct Cooled Electric Drive

Energies ◽  
2020 ◽  
Vol 13 (22) ◽  
pp. 5867
Author(s):  
Robert Lehmann ◽  
Arthur Petuchow ◽  
Matthias Moullion ◽  
Moritz Künzler ◽  
Christian Windel ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Thermal Model ◽  
Performance Testing ◽  
Sensitivity Study ◽  
Maximum Heat ◽  
Cooling Fluid ◽  
Two Fluids ◽  
Fluid Properties ◽  
And Performance ◽  
Electric Traction

In this publication, the cooling fluid for direct oil-cooled electric traction drive is investigated. A dedicated thermal resistance model was developed in order to show the influence of the fluid properties on the continuous performance. For this purpose, the heat transfer parameters are adjusted in the simulation using an exponential approach in order to evaluate the cooling fluid. In a sensitivity study, density, heat capacity, thermal conductivity, and viscosity are investigated. Because viscosity, within the range investigated, shows the largest percentage deviation from the reference fluid, the greatest effect on performance can be seen here. In order to check the plausibility of the calculated results of the thermal simulation, two fluids were chosen for performance testing on a dedicated electro motor cooling (EMC) test. Beyond the investigation of heat transfer, aging of the defined fluid at maximum heat input over several hours is also evaluated. Only slight changes of the fluid properties are detected. This publication presents a thermal model for direct oil-cooled drive trains, which consider fluid properties. Furthermore, the model was tested for plausibility on real hardware.

Performance Testing of a Thermoelectric Cooler for Medical Application

2011 ◽  
Vol 255-260 ◽  
pp. 1537-1540
Author(s):  
Fu Jen Wang ◽  
Jung Chieh Chang ◽  
Kuo Chien Lin ◽  
Yat Huang Yau
Keyword(s):  
Heat Transfer ◽  
Performance Testing ◽  
Experimental Tests ◽  
Medical Application ◽  
Cooling Capacity ◽  
Cold Chain ◽  
Heat Transfer Analysis ◽  
Thermoelectric Cooler ◽  
Open Market ◽  
Thermoelectric Coolers

Thermoelectric cooler has the advantage of being portable, simple, compact, noiseless, reliable, and environmentally benign. It is quite suitable for transporting and storage for bio-medical products (such as vaccine and blood) which are very sensitive to temperature variation. However, the coefficient of performances (COP) and the cooling capacity of the thermoelectric coolers available in the open market are relatively low. In this study, the effort will be focused on the design of the heat transfer aspect for a thermoelectric blood cooler specific for bio-medical application. Optimized thickness at 0.0025m of a plate fin with length at 0.598m could be obtained through heat transfer analysis. Performance tests have been conducted to investigate the influence of cabinet temperature in the thermoelectric blood cooler. Experimental tests revealed the optimized plate fin can provide satisfactory cooling performance, and to cool down the cabinet until 2°C within 40 minutes. Some tests including different voltage input, loading condition and ambient temperature tests for blood storage have been conducted as well to validate the quality of blood cold chain storage. It is expected that the developed thermoelectric cooler for blood cold chain system will perform stable cold storage and precise temperature control specific for medical application.

scholarly journals Heat Transfer Analysis and Performance Measurements of Hollow Pin-fin in Natural Convection

2019 ◽  
Vol 8 (6S) ◽  
pp. 727-731
Keyword(s):  
Heat Transfer ◽  
Natural Convection ◽  
Temperature Distribution ◽  
Convective Heat Transfer ◽  
Convective Heat ◽  
Thermal Performance ◽  
Temperature Drop ◽  
Heat Transfer Analysis ◽  
Pin Fin ◽  
And Performance

The Fin act as dissipiating elements, selection of proper geometry plays crusial role in increasing the rate of heat transfer and performance of the system. This work has been undertaken to investigate and compare thermal performance of solid and hollow pin-fin. Heat transfer analysis of solid and hollow pin fin carried and the results was compared with the experimental results. experiment was conducted to analyze the natural convection around solid hollow pin fin, and compare thermal performance of hollow pin fin with the solid pin fin of same dimension and orientation. The experimental result of temperature distribution shows that the faster temperature drop along the length. The high value of convective heat transfer in the initial phase due to which faster temperature drop takes place. Convection is found to be dominating due to less area for conduction along the length. Theoretical value and experimental value are close to each for temperature distribution as well the convective heat transfer coefficient. Efficiency is reduced in the case of hollow fin but the effectiveness of the hollow pin fin is increased by 1.76 times from an economical point of view, holoow pin fin is more efficient solution.

Conjugate Heat Transfer Analysis of an Engine Internal Cavity

2000 ◽  
Author(s):  
A. Montenay ◽  
L. Paté ◽  
J. M. Duboué
Keyword(s):  
Heat Transfer ◽  
Conjugate Heat Transfer ◽  
Interaction Model ◽  
Heat Transfer Analysis ◽  
Navier Stokes ◽  
Internal Cavity ◽  
Internal Cooling ◽  
Solid Media ◽  
Coupling Procedure ◽  
And Performance

The analysis of heat transfer in engine cavities or blade internal cooling systems is one of the most challenging work for aircraft engines designers for two main reasons. Firstly, the efficiency of such systems has a direct influence on both life and performance of these engines. Secondly, the available tools to predict heat transfer in both solid parts and surrounding cooling gases, i.e. Navier Stokes and conduction codes, are often used independently. An interaction model between the fluid and solid media is generally required and remains a difficult issue in engine configurations. A coupling procedure between a Navier-Stokes code and a conduction solver is therefore the only way to achieve heat transfer predictions in all flow situations. The objective of this work is to present such a procedure, which has been developed at Snecma and based on a Finite Volume Navier-Stokes code and a commercial Finite Element solver. The first application showed in the paper demontrates, with an uncoupled calculation that the Navier-Stokes code MSD, from ONERA, is able to predict heat transfer with an acceptable accuracy. The discretization used in the solid to predict heat conduction is briefly presented. Then the steady state coupling procedure is exposed and validated with an analytical solution. Finally, a conjugate heat transfer computation in a rotor/rotor cavity of a real engine, with rotating solid disks, is described in detail.

Preliminary Results: The Design, Instrumentation, and Performance of FSBE Tooling for Aluminum Tubes

2019 ◽  
Author(s):  
William J. Emblom ◽  
Scott Wagner ◽  
Ayotunde Olayinka ◽  
Courtnei Richard ◽  
Quinn Anglada ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Heat Transfer Analysis ◽  
Current Status ◽  
Recrystallization Temperature ◽  
Work Piece ◽  
Process Data ◽  
Manufacturing Method ◽  
Friction Stir ◽  
And Performance ◽  
Steady State Heat Transfer

Abstract Friction stir back extrusion (FSBE) has been identified as a manufacturing method for producing tubing with both stronger and more ductile tubing for applications such as hydroforming, biomedical, energy, and MEMS. Additionally, FSBE has been identified as a technology that can be potentially down scaled. However, the process is still not fully understood because of the multitude of process parameters such as geometry, work piece material, friction and heat transfer, and other parameters that go into producing tubes. The goal of this project was to design and test instrumented tooling for FSBE that were capable of producing a wide variety of tubing diameters, measure temperature and force in real-time both, and save process data for further analysis. The current status of this project is that the die has been fully instrumented and tested for measuring temperature, a design for the tool holder and probe capable of measuring plunge force for a CNC mill has been completed, and sample tests measuring temperature have been performed. In addition, a simple steady state heat transfer analysis has shown that the work pieces were approximately 29 degrees hotter than the temperature at the thermal couple. Those temperatures are above the recrystallization temperature of 150°C. Tooling geometry, and a comparison of test results are presented and the future uses for this tooling are discussed.

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