

Wednesday 21. September 2011
Transall C160The BWB placed an order with EADS / Cassidian Air Systems containing development, serial production and assembling of an innovative generating system in the Transall aircraft of...
Friday 28. January 2011
ENTRAK new member of bavAIRia e.V.Founded by the Bavarian Government, bavAIRia is comitted to identify the Bavarian core competencies in aviation, aerospace and satellite navigation in order to intensify the network of the key companies.
BavAIRia’s intention is...
Friday 15. January 2010
Bavarian R&D Project More Electric Aircraft (MEA)ENTRAK is partner in the research project for the development of an integrated test environment for More Electric Technologies. Those studies happen in a research co-operation between universities, aircraft- and engine-industries...
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Peltier Element
The basic component of a Peltier device is the Peltier element. A Peltier element works like a thermoelectric heat pump, transferring heat from one side face of the element to the other when DC voltage is applied. One side face of the element is cooled in the process, the opposite side face is heated. When the voltage polarity is reversed, it also reverses the direction of the heat transfer. Thus Peltier elements can be used for heating and/or cooling. The desired heating or cooling power is reached by interconnecting multiple Peltier elements.
A Peltier element usually consists of two square ceramic plates with small blocks soldered between them, alternating between p- and n-type semiconductor material. The blocks are connected by copper bridges that also serve as thermic contact surfaces to the ceramic plates. P-type semiconductors transport the heat in the direction of the current (downstream), while n-type semiconductors transport the heat against the direction of the current (upstream). All blocks are connected in series, alternating the different types of doping. So an electric current pumps heat from one side of the Peltier element to the other, creating a temperature difference between the ceramic plates.
Advantages of the Peltier technology