Temperature Gravity Wheel

The temperature gravity wheel is a heat engine. It is ultra low maintenance, and it requires low temperature difference.

More explanation about it in wikipedia: https://en.wikipedia.org/wiki/Minto_wheel

Some people build is as a hobby project. It works. Could be used for OTEC.

Working examples: A temperature gravity wheel, a high school project in Alaska. https://youtu.be/Z6AChkM3TkU

The temperature gravity wheel is also called the Minto Wheel. Other examples:

https://youtu.be/Za9td23Vk0c

https://youtu.be/-fUlKBH1sY8?list=PL44A53F06B1DACFFE

https://youtu.be/NhFKHTdNPt4

https://youtu.be/bPfYQM3H7dc

https://youtu.be/bs_OtCsDJoY

This is the one I (Spark2) built: https://youtu.be/gdmU6EEAnXI