Cool Energy’s Low-Temperature Stirling Engine Recovers Waste Heat as Electricity


The SolarHeart®Engine is the new Stirling engine developed by Cool Energy that converts low-temperature (100oC to 300oC) heat energy to electrical power output ranging from 3 kW to 20 kW, making it suitable for solar thermal electric, biomass power, and waste heat recovery applications.

As a participant at the Asia Pacific Clean Energy Summit’s Defense Energy Technology Challenge recently held in Honolulu, Cool Energy has hit a record of 22% power conversion efficiency from thermal to electrical at a lower temperature of 300oC and has demonstrated that their device produces a maximum power more than 3.2 kW.

In addition, Cool Energy has installed its first customer unit in Schneider Electric (France) which is currently testing the unit.

Also read: How to Beat the Agony of a Dying Phone Battery

Sam, Weaver, Cool Energy’s CEO, said that the SolarHeart®Engine has two prototypes that are at the present in reliability testing, each running 24/7 for a total of 1,000 hours.

Weaver also stated that the company is trying to have their technology licensed to Indian and European manufacturers.

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