ECT100- thermal energy scavenging technology- even works in 2 centigrades diffrence

Product's website: http://www.tdc.co.uk/index.php?key=ect100

This is a product from EnOcean company in Germany.

EnOcean has developed a thermal energy harvester which is able to power wireless sensor nodes from temperature differentials of only a few Kelvin.

This new energy harvester ECT100 is based on a revolutionary DC/DC converter which automatically starts operation at 20mV.

ECT100 converts an input voltage in the range of 0.02V to 0.25V to an output voltage in the range of about 4V to 4.5V. The input voltage can e.g. be generated from a temperature differential using a peltier element.

The output power depends on the actual temperature difference between both sides of the Peltier element and the element being used. It ranges from μW to mW at 3.5V. Therefore ECT100 is designed for use with EnOcean radio technology in sensors and actuators.

It’s size is around 4 cm.