Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Smart alternatives to energy guzzlers in electric cars

14.10.2014

Scientists investigate heat transfer in car seats

The government hopes that by 2020 there will be 20 million electric cars on Germany's roads. However, to make electric vehicles attractive to large parts of the population, one of the aspects that needs to be improved is their range.


Intelligent energy management is the key to increased range for electric cars.

©Hohenstein Institute


Figure 1: The scientists are using three scenarios to investigate heat transfer in car seats.

©Hohenstein Institute

The key to this is intelligent energy management, and this includes not only the drive technology and construction of the vehicle but also "energy guzzlers" such as the air conditioning and interior heating systems. In electric cars, both of these have to operate from the power supply, at the expense of the vehicle's range.

In the light of this, scientists from the Hohenstein Institute (Bönnigheim), FILK (Freiberg) and IHD (Dresden) have been investigating the factors affecting the design of thermally optimised car seats. The aims of the project (IGF No.18080 BG) are to establish the theoretical principles behind heat transfer in seat covers, create a model of the processes involved in heat transfer and implement it in the design of improved seating.

The researchers are concentrating on using appropriate materials and combining them intelligently to provide a certain amount of passive climate control. They are not looking at "active" solutions such as heating and cooling systems for seats.

In the first phase of the project, the scientists from the three research institutions are studying the effect of the human body, and the heat it emits, on complex upholstery materials. Firstly, they are considering different seat covers using standard and functional textiles. Secondly, they are basing their work on different usage scenarios (see Figure 1).

The constant factor is the "feel-good temperature" which, with textile surfaces, is 23º C. Various different measuring methods can be used to derive quantitative load factors to describe the material or the combination of materials and their heat conduction properties in dry and moist conditions.

These reference values serve as the basis for simulating the processes involved in heat transfer. These simulations are carried out using what is called the Finite Element Method (FEM), a numerical procedure normally used, among other things, to calculate the dimensions of complex components and assemblies in engineering and vehicle manufacture. It can also be used to represent contradictory physical influences and their effects.

The simulations can then be used to calculate the combinations of materials and structural designs which would have the most positive effect on both heating and cooling behaviour. This knowledge will help small and medium-sized automotive suppliers in particular to secure a competitive advantage for themselves in future by increasing comfort levels, saving energy and reducing development costs.

Weitere Informationen:

http://www.hohenstein.de/en/inline/pressrelease_74946.xhtml

Andrea Höra | Hohenstein Institute

More articles from Power and Electrical Engineering:

nachricht A big nano boost for solar cells
18.01.2017 | Kyoto University and Osaka Gas effort doubles current efficiencies

nachricht Multiregional brain on a chip
16.01.2017 | Harvard John A. Paulson School of Engineering and Applied Sciences

All articles from Power and Electrical Engineering >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Traffic jam in empty space

New success for Konstanz physicists in studying the quantum vacuum

An important step towards a completely new experimental access to quantum physics has been made at University of Konstanz. The team of scientists headed by...

Im Focus: How gut bacteria can make us ill

HZI researchers decipher infection mechanisms of Yersinia and immune responses of the host

Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...

Im Focus: Interfacial Superconductivity: Magnetic and superconducting order revealed simultaneously

Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.

While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...

Im Focus: Studying fundamental particles in materials

Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales

Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...

Im Focus: Designing Architecture with Solar Building Envelopes

Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.

As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Sustainable Water use in Agriculture in Eastern Europe and Central Asia

19.01.2017 | Event News

12V, 48V, high-voltage – trends in E/E automotive architecture

10.01.2017 | Event News

2nd Conference on Non-Textual Information on 10 and 11 May 2017 in Hannover

09.01.2017 | Event News

 
Latest News

Helmholtz International Fellow Award for Sarah Amalia Teichmann

20.01.2017 | Awards Funding

An innovative high-performance material: biofibers made from green lacewing silk

20.01.2017 | Materials Sciences

Ion treatments for cardiac arrhythmia — Non-invasive alternative to catheter-based surgery

20.01.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>