Next Article in Journal
The Exergy Loss Distribution and the Heat Transfer Capability in Subcritical Organic Rankine Cycle
Next Article in Special Issue
Entropy Generation Rates through the Dissipation of Ordered Regions in Helium Boundary-Layer Flows
Previous Article in Journal
An Entropy-Based Generalized Gamma Distribution for Flood Frequency Analysis
Previous Article in Special Issue
Entropy Generation of Double Diffusive Forced Convection in Porous Channels with Thick Walls and Soret Effect
Article Menu
Issue 6 (June) cover image

Export Article

Open AccessArticle
Entropy 2017, 19(6), 255; doi:10.3390/e19060255

Application of Entropy Generation to Improve Heat Transfer of Heat Sinks in Electric Machines

1
Robert Bosch SG GmbH, Robert-Bosch Strasse 2, 71701 Schwieberdingen, Germany
2
Laboratory of Fluid Dynamics and Technical Flows, Otto von Guericke University Magdeburg, Universitätsplatz 2, 39106 Magdeburg, Germany
3
Robert Bosch Engineering and Business Solutions Limited, CHIL-SEZ Keeranatham Village, 641035 Tamil Nadu Coimbatore, India
*
Author to whom correspondence should be addressed.
Academic Editor: Yan Jin
Received: 15 April 2017 / Revised: 24 May 2017 / Accepted: 26 May 2017 / Published: 2 June 2017
(This article belongs to the Special Issue Entropy in Computational Fluid Dynamics)
View Full-Text   |   Download PDF [9622 KB, uploaded 2 June 2017]   |  

Abstract

To intensify heat transfer within the complex three-dimensional flow field found in technical devices, all relevant transport phenomena have to be taken into account. In this work, a generic procedure based on a detailed analysis of entropy generation is developed to improve heat sinks found in electric machines. It enables a simultaneous consideration of temperature and velocity distributions, lumped into a single, scalar value, which can be used to directly identify regions with a high potential for heat transfer improvement. By analyzing the resulting entropy fields, it is demonstrated that the improved design obtained by this procedure is noticeably better, compared to those obtained with a classical analysis considering separately temperature and velocity distributions. This opens the door for an efficient, computer-based optimization of heat transfer in real applications. View Full-Text
Keywords: entropy generation; irreversibility ratio; second law analysis; optimization; electric machines entropy generation; irreversibility ratio; second law analysis; optimization; electric machines
Figures

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Eger, T.; Bol, T.; Thanu, A.R.; Daróczy, L.; Janiga, G.; Schroth, R.; Thévenin, D. Application of Entropy Generation to Improve Heat Transfer of Heat Sinks in Electric Machines. Entropy 2017, 19, 255.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Entropy EISSN 1099-4300 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top