What is a device that produces electrical energy fromheat energy?

Question

What is a device that produces electrical energy fromheat energy?

Answer 1

The collective noun would be 'generators'.  The simplest such device is the Thermocouple.  It is two different metals joined together.  The amounts generated are VERY tiny but it does do  exactly what you have asked.

Answer 2

A generator can make electrical energy from heat. This can be through a steam turbine or a gasoline or other engine. Geothermal heat can be used to generate electricity..

Answer 3

could be a boiler, steam turbine, generator combination.

could be a solar cell (although that works from light)

Answer 4

A turbine? It uses temperature gradient to power the turbine which generates electricity I believe.