Heinrich Zoelly

He developed steam turbines and turbine-driven locomotives and patented the geothermal heat pump in 1912.

When Henry was still a child, his father left Mexico because of political unrest and returned to Europe and settled in Switzerland.

There, Henry attended primary school, skipping two grades before starting at the Federal Polytechnic Institute (which later became ETH Zurich).

In 1903 Zoelly developed a multi-stage axial flow impulse turbine in collaboration with Professor Stodola.

[6] In 1912 Zoelly was awarded an honorary degree from the ETH Zurich, partly thanks to his work in turbine development.